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MAX25605
6 Switch Sequential LED Controller For
Automotive Lighting Systems
General Description
Benefits and Features
The MAX25605 is a six-channel automotive sequential
LED controller. The device implements a sequential turn
function or any other sequential light animation without the
use of a microcontroller or software. The MAX25605 integrates six cascoded low RDSON n-channel MOSFETs
suitable for LED lighting applications up to 750mA. Each
switch supports up to three series LEDs per switch. The
entire LED string voltage supported is up to 60V. The nchannel MOSFETs are divided into two groups of three,
allowing a single device to sequence either one or two
strings of LEDs. Integrated gate drivers and level shifters
for the switches are supplied by an internal charge-pump
regulator, supporting buck-boost and boost-to-battery applications, in addition to ground-referenced LED driver
topologies.
● Flexible Dimming Configuration Provides Optimal
Performance without a Microcontroller or Software.
• Simple Resistor Programming for Sequence Timing
and Direction.
• Hazard Light Applications
• Sync Pin Allows Sequencing of up to 16 Devices
• Optional Logarithmic LED Fade
Sequencing functionality and timing is programmed by
connecting resistors to the A0, A1, A2, and CLK inputs.
Programming options include: dimming up/down, short
LED threshold, multi-device sequence position, dimming
frequency, and fade duration. The optional logarithmic
fade feature allows for gradually turning the LEDs on or
off. The sequence can be disabled by pulling the enable
input low. With EN pulled low, the switches are open and
the LED driver current flows through the entire LED string.
Each switch also integrates single-LED fault detection, asserting a fault flag in case of shorted LEDs, open LEDs,
or open wires between the sequencer and the LED string.
Additionally, up to 16 devices can be sequenced together
through the use of a SYNC input.
● Protection Features and Package Improve Reliability
• Single-LED Short, Open, and Open-Trace
Detection
• Thermal Shutdown and Fault Flag
The MAX25605 operates over the -40ºC to +125ºC automotive temperature range and is available in a 20-pin
4mmx4mm side-wettable TQFN and a 20-pin TSSOP
package with exposed pad.
Applications
● Sequential Turn Signal Lights
● Hardware Based Lighting Animation
19-100844; Rev 1; 11/20
● Flexible Configuration Allows the Use of the Same
Device in Different Applications
• One, Two, or Three Series LEDs per Switch
• Floating Source MOSFETs
● EMI Reduction
• Spread-Spectrum Oscillator
• Slew Rate Control Minimizes LED Current Spikes
● Automotive Ready
• AEC-Q100 Qualified
• -40ºC to +125ºC Operating Temperature Range
Ordering Information appears at end of datasheet.
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Simplified Block Diagram
VBAT
LED
DRIVER
IN
CPP
CPN
DR6
DR5
VDD
DR4
MAX25605
SRC4
DR3
FLT
EN
SYNC
CLK
A0
A1
A2
GND
DR2
DR1
EP
SRC1
BAT or GND
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Maxim Integrated | 2
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
TABLE OF CONTENTS
General Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Benefits and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
20 TQFN-EP* (SW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
20 TSSOP-EP* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pin Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
TQFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
TSSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Functional Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
MAX25605 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Internal Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Charge Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Enable Function (EN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
tSEQ Programming (CLK). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Synchronizing Multiple MAX25605 Devices (SYNC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Sequence with Fade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Programming Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Pin Resistor Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
MAX25605 Pin Resistor Decode Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Fault Indicator (FLT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
LED Open Fault Detection and Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
LED Short Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Open Trace Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Thermal Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
RCLK Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Fade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Hazard Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Example Sequential Turn Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
DR_ Leakage Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Thermal Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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Maxim Integrated | 3
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
TABLE OF CONTENTS (CONTINUED)
Layout Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Typical Applications Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
12 Segment Design from a Single LED Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
12 Segment Applications Circuit with Separate LED Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Five Segment Applications Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Four Segment Applications Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Three Segment Applications Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
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Maxim Integrated | 4
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
LIST OF FIGURES
Figure 1. Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 2. Fault Mask Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 3. Example Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Lighting Sequence Corresponding to the Figure 4. Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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Maxim Integrated | 5
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
LIST OF TABLES
Table 1. A0/A1/A2 Recommended Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 2. Short-LED Voltage Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 3. Dimming Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 4. Sequence Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 5. Number of Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 6. Fade Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
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Maxim Integrated | 6
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Absolute Maximum Ratings
IN to GND ............................................................... -0.3V to +65V
VDD to GND........................................................... -0.3V to +2.5V
CPN to GND ........................................................... -0.3V to +65V
CPP to GND ........................................................... -0.3V to +70V
CPP to CPN ............................................................. -0.3V to +6V
CPP to DR6 ............................................................ -0.3V to +70V
DR6 to GND ........................................................... -0.3V to +65V
DRx to DR(x-1) ((note 1)) ....................................... -0.3V to +16V
SRCx to GND ......................................................... -0.3V to +65V
DR6 to SRC4.......................................................... -0.3V to +48V
DR4 to SRC4.......................................................... -0.3V to +16V
DR3 to SRC1.......................................................... -0.3V to +48V
DR1 to SRC1 .......................................................... -0.3V to +16V
EN, FLT, SYNC, CLK to GND .................................. -0.3V to +6V
A0, A1, A2 to GND........................................ -0.3V to VDD + 0.3V
Continuous Power Dissipation (20-Pin TQFN SW) (TA = +70ºC,
derate 25.6mW/ºC above +70ºC) ...................................2050mW
Continuous Power Dissipation (20-Pin TSSOP) (TA = +70ºC,
derate 26mW/ºC above +70ºC) ......................................2122mW
Operating Temperature Range ...........................-40°C to +125°C
Junction Temperature ....................................................... +150°C
Storage Temperature Range ..............................-40°C to +150°C
Soldering Temperature (reflow) ........................................ +260°C
Note 1: Does not apply to DR4 to DR3.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the
device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
Package Information
20 TQFN-EP* (SW)
Package Code
T2044Y+3C
Outline Number
21-100068
Land Pattern Number
90-0037
Thermal Resistance, Single-Layer Board:
Junction to Ambient (θJA)
59ºC/W
Junction to Case (θJC)
6ºC/W
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θJA)
39ºC/W
Junction to Case (θJC)
6ºC/W
20 TSSOP-EP*
Package Code
U20E+3C
Outline Number
21-100132
Land Pattern Number
90-100049
Thermal Resistance, Single-Layer Board:
Junction to Ambient (θJA)
46ºC/W
Junction to Case (θJC)
2ºC/W
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θJA)
37ºC/W
Junction to Case (θJC)
2ºC/W
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates
RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal
considerations, refer to www.maximintegrated.com/thermal-tutorial.
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Maxim Integrated | 7
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Electrical Characteristics
(Input Voltage = IN = 5V, TA = TJ = -40ºC to +125ºC, unless otherwise noted. Typical values are at TA = +25ºC. Limits over the
operating temperature range and relevant supply voltage range are guaranteed by design and characterization. (Note 2))
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltages
Supply Voltage
VIN
Input Current
IIN
Input POR Threshold
Charge-Pump Operating
Voltage
VIN-POR
Operating Voltage Range
4.0
2
VIN Rising
3.6
VCPP
60
V
5
mA
3.9
V
65
V
1.89
V
VDD Regulator
VDD Output
VDD
2.2µF capacitor placed between VDD and
GND pins. IVDD = 10mA
1.71
1.8
VDD UVLO Rising
Threshold
UVLO_R_TH
1.61
1.69
V
VDD UVLO Falling
Threshold
UVLO_F_TH
1.54
1.63
V
LED Sequence Timing
Sequence Period
tSEQ
TSEQ
RCLK = 9.09kΩ
9.8
RCLK = 15.0kΩ
16
RCLK = 47.5kΩ
47.5
50
ms
52.5
LED Switches
Single Switch OnResistance
RDSON
0.2
Ω
On-Resistance with
Series Switches 3-1 On
0.6
1.2
Ω
On-Resistance with
Series Switches 6-4 On
0.6
1.2
Ω
13.75
15
V
45
100
mA
Open LED Threshold
Open Trace Threshold
Short LED Threshold
VOTH
ILED_MIN
VSTH
12.5
Minimum Current Required to Detect
Open Trace
RA0 = 95.3Ω or 1050Ω, Rising VDS
1.26
1.40
1.54
RA0 = 200Ω or 1210Ω, Rising VDS
3.24
3.6
3.96
RA0 = 309Ω or 1400Ω, Rising VDS
3.6
4.00
4.4
RA0 = 422Ω or 1620Ω, Rising VDS
4.95
5.5
6.05
RA0 = 536Ω or 1870Ω, Rising VDS
5.4
6.0
6.6
RA0 = 649Ω or 2150Ω, Rising VDS
5.94
6.6
7.26
RA0 = 768Ω or 2490Ω, Rising VDS
6.48
7.2
7.92
RA0 = 909Ω or 2870Ω, Rising VDS
6.93
7.70
8.47
0.06
0.4
V
1
μA
V
FLT Flag
FLT Output Low Voltage
ISINK = 2 mA
FLT Output High
Leakage Current
FLT = 5V
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Maxim Integrated | 8
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Electrical Characteristics (continued)
(Input Voltage = IN = 5V, TA = TJ = -40ºC to +125ºC, unless otherwise noted. Typical values are at TA = +25ºC. Limits over the
operating temperature range and relevant supply voltage range are guaranteed by design and characterization. (Note 2))
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DIGITAL INPUTS (EN, SYNC)
Input High Voltage
VIH
Input Low Voltage
VIL
Input Leakage Current
ILEAK
1.4
V
0.4
V
Input driven to 0V or 5V
±1
μA
ISINK = 2mA
0.4
V
DIGITAL OUTPUTS (EN, SYNC)
Output Low Voltage
VOL
THERMAL SHUTDOWN
Thermal-Warning
Threshold
TH_WARN
Thermal-Warning
Hysteresis
HYS_WARN
Rising temperature
140
ºC
15
°C
165
ºC
Thermal-Shutdown
Threshold
TH_SHDN
Thermal-Shutdown
Hysteresis
HYS_SHDN
15
ºC
fCPP
16.384
MHz
Rising temperature
CHARGE PUMP
Charge-Pump
Frequency
Charge-Pump Output
Voltage
Vo
Charge-Pump PowerGood Threshold
VCPP_OK
VCPP - VCPN, ICPP = 190μA
Rising threshold
3.8
5.8
4.0
V
V
Note 2: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage
are guaranteed by design and characterization.
Note 3: Bias current into the larger of VIN, VDR6, or VDR3
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Maxim Integrated | 9
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Pin Configurations
DR3
DR2
DR1
SRC1
TOP VIEW
SRC4
TQFN
15
14
13
12
11
DR4
16
10
A2
DR5
17
9
A1
DR6
18
8
A0
CPP
19
7
CLK
CPN
20
6
SYNC
MAX25605
+
4
EN
5
FLT
3
GND
VDD
2
IN
1
TQFN
4mm × 4mm
A1
A2
SRC1
DR1
DR2
DR3
SRC4
DR4
DR5
TOP VIEW
DR6
TSSOP
20 19 18 17 16 15 14 13 12 11
MAX25605
EP
VDD
7
8
9
10
A0
IN
6
CLK
CPN
5
SYNC
4
FLT
3
EN
2
GND
1
CPP
+
TSSOP
Pin Description
PIN
TQFN
TSSOP
1
3
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NAME
IN
FUNCTION
Input Supply. Connect to external power supply to provide power to the device.
Connect a minimum 0.1μF ceramic capacitor between IN and GND.
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MAX25605
6 Switch Sequential LED Controller For Automotive
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Pin Description (continued)
PIN
NAME
FUNCTION
TQFN
TSSOP
2
4
VDD
LDO Output. Nominal voltage is 1.8V. Connect a minimum 2.2μF ceramic
capacitor between VDD and GND.
3
5
GND
Ground Connection
4
6
EN
Pull EN pin low to turn all the switches off. EN pin is a bidirectional pin. EN is
released internally only when charge pump voltage reaches regulation. EN going
high activates sequence function.
5
7
FLT
Open-Drain Fault Indicator. Goes low when a fault condition is present.
6
8
SYNC
7
9
CLK
Sequence Period Programming Input. Connect a resistor from CLK to GND to set
the sequence period.
8
10
A0
A0 Programming Input. Connect the appropriate resistor value from A0 to GND in
accordance with Table 1.
9
11
A1
A1 Programming Input. Connect the appropriate resistor value from A1 to GND in
accordance with Table 1.
10
12
A2
A2 Programming Input. Connect the appropriate resistor value from A2 to GND in
accordance with Table 1.
11
13
SRC1
12
14
DR1
Drain of Internal Switch 1
13
15
DR2
Drain of Internal Switch 2
14
16
DR3
Drain of Internal Switch 3
15
17
SRC4
16
18
DR4
Drain of Internal Switch 4
17
19
DR5
Drain of Internal Switch 5
18
20
DR6
Drain of Internal Switch 6
19
1
CPP
Charge Pump Capacitor Positive Connection. Connect a 0.1µF ceramic capacitor
from CPP to CPN.
20
2
CPN
Charge Pump Capacitor Negative Connection. Connect a 0.1µF ceramic capacitor
from CPP to CPN.
-
—
EP
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Open-Drain Synchronization I/O. Connect the SYNC I/O of each MAX25605
together to implement sequences of more than six LED segments.
Source of Internal Switch 1
Source of Internal Switch 4
Exposed Pad Connection. Connect this pad to a contiguous ground plane.
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MAX25605
6 Switch Sequential LED Controller For Automotive
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Functional Diagrams
MAX25605 Block Diagram
CPN
CPP
MAX25605
CHARGE
PUMP
IN
1.8V LDO
LED DRIVER
OUTPUT
VDD
VDD
DR6
A0 SAMPLE
LEVEL
SHIFTER
FAULT
DETECTION
A1 SAMPLE
LEVEL
SHIFTER
FAULT
DETECTION
LEVEL
SHIFTER
FAULT
DETECTION
A0
SW6
VDD
DR5
A1
SW5
VDD
DR4
A2 SAMPLE
SW4
A2
SRC4
CLK
TSEQ OSC
DR3
CONTROL
LOGIC
LEVEL
SHIFTER
FAULT
DETECTION
LEVEL
SHIFTER
FAULT
DETECTION
SW3
SYNC
DR2
SW2
DR1
EN
LEVEL
SHIFTER
FAULT
DETECTION
SW1
SRC1
FLT
LED RETURN
GND
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EP*
Maxim Integrated | 12
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Detailed Description
The MAX25605 consists of 6 switches in series and is designed for use in sequential-turn applications. The device
switches the sequential-turn LEDs on or off by opening or shorting the switches. The device can have 1, 2, or 3 LEDs
in series across each switch. The typical on-resistance of each of the switches in the MAX25605 is 0.2Ω. The low onresistance of the switches minimizes conduction loss and power dissipation. The device is suitable for sequential-turn
applications for currents as high as 750mA. In addition to single-string applications, the device can also be configured
for two-string applications. The operating voltage across each switch should not exceed the minimum open threshold
voltage. The maximum withstand voltage for the entire LED string is 60V. The MAX25605 also includes an internal charge
pump that provides power for the gate drive for each of the LED bypass switches.
The IC includes a bidirectional EN pin that is released internally when the charge pump has reached the correct regulation
voltage. Sequencing of the switches begins when EN goes high. The LEDs are turned either on or off with the timing
and direction as set by the A0, A1, and A2 external programming resistors. The device includes a FLT pin that indicates
LED-open or LED-short faults or activation of thermal shutdown. In addition to sequential turn, the device can also be
used in hazard-light applications where all the LEDs are turned on simultaneously by turning off all the switches in the
MAX25605 at the same time. This is achieved by pulling EN pin low. The device is available in a 20-pin 4mmx4mm sidewettable TQFN and a 20-pin TSSOP package with exposed pad.
Internal Switches
Each switch connected between DRn and DRn-1 has a typical on-resistance of 0.2Ω. This measurement includes the onresistance of the internal switch and the resistance of the bond wires to the DRn and DRn-1 pads. Each bypass switch,
when driven to an off state, allows the string current to flow through the corresponding parallel-connected LED, turning
the LEDs on. Driving the bypass switch to an on state shunts the current through the bypass switch and turns the LEDs
off. Each bypass switch can have one, two or three LEDs in series across it.
All six switches are connected in a cascode configuration to allow for animation in applications where the LED string
cathode does not connect to ground. The switches are divided into two groups of three to give the option of controlling
two parallel LED strings with a single MAX25605 device. Alternatively, a single string can be controlled by connecting
SRC4 and DR3 externally.
The slew rate of the switches is controlled to minimize the current undershoot or overshoot during segment transitions.
The switch slew rate is approximately 333 mV/μs.
Charge Pump
The MAX25605 integrates a charge pump that provides the voltage rails for each switch gate driver and level shifter.
The charge pump requires a single 0.1µF capacitor connected between CPP and CPN for operation. The charge pump
includes spread spectrum, which dithers the switching frequency by ±6% around the fundamental of 16.384MHz. The
input power for the charge pump is taken from the higher voltage of IN, DR6, or DR3. Therefore, IN and DR6 should have
an external decoupling capacitor of at least 0.01µF as close as possible to the device, assuming DR6 is always a greater
voltage than DR3. If the DR6 and DR3 segments are controlling two different LED strings, then DR3 should also have a
close decoupling capacitor.
Enable Function (EN)
EN acts as both an enable input and an open-drain output. During initial power-up, the MAX25605 will pull down on the
EN pin until all internal circuits are powered and ready to control the switches. Therefore, EN can be tied to the PWM or
enable input of the LED driver to ensure that the current is not sourced to the LEDs prior to the MAX25605 waking up.
When the device releases EN, this signals that the system is ready to control the current in the external LEDs. Multiple
MAX25605 devices can have their EN pins tied together in an open-drain bus configuration. While the EN pin is low, all
switches will remain in the open position. The host system can force the EN pin low indefinitely if desired. This will keep
all switches off to allow for emergency-mode full-brightness lighting in the external LEDs. Because the fault-detection
algorithm requires the switch transition to recognize fault conditions, the fault-detection block is disabled while EN is low.
When the EN pin is released high, the MAX25605 is enabled. The switches will then be opened or closed, and the control
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Maxim Integrated | 13
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
sequence will begin as determined by the external pin resistor programming.
tSEQ Programming (CLK)
The CLK input configures the single step sequence period, tSEQ, of the device. The total sequence time for the entire
animation is tSEQ x n, where tSEQ value is programmed by the RCLK resistor and n is the number of sequence steps.
CLK uses a V-to-I converter, forcing a fixed voltage on RCLK and mirroring the corresponding current into the tSEQ
oscillator. Unlike the A0/A1/A2 programming inputs which are only sampled during power up, the CLK input is active
continuously during operation. Use the following equation to choose RCLK:
RCLK = (tSEQ - 0.17)/1.045
where RCLK is in kΩ and tSEQ is in ms.
It is recommended to choose a tSEQ value between 2ms and 100ms.
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Maxim Integrated | 14
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Timing Diagram
IN
V
DD
A0 SAMPLE
A1 SAMPLE
A2 SAMPLE
CPP-CPN
CP_RDY
EN
I_SOURCE
S1_TOGGLE
S2_TOGGLE
SN_TOGGLE
t
STARTUP
t
t
SEQ1
SEQ2
t
SEQN
TIME
Figure 1. Timing Diagram
The startup sequence begins with IN rising above its UVLO. The VDD will turn on and power up to 1.8V. Once the
VDD has come up, a pulsed current is forced through the A0, A1, and A2 resistors and the corresponding voltage is
sampled to set the configuration of the device. Finally, the charge pump will power up and provide bias to the level-shift
and gate-drive circuitry. Once the internal bias blocks and charge pump have finished turning on, the device startup is
completed and the EN signal is released. At this point, the LED current source can be enabled. The MAX25605 will begin
sequencing the switches according to the sampled A0, A1, and A2 resistor settings. All switches start either closed or
open depending on whether DIM UP or DIM DOWN is configured. At the end of the first tSEQ period, the first switch in
the sequence will change its state. The sequence continues until the nth tSEQ period has completed and the nth switch
changes its state. After the last tSEQ period, the switches will remain in their ending state until the IN or EN input is
toggled.
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Maxim Integrated | 15
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Synchronizing Multiple MAX25605 Devices (SYNC)
The MAX25605 can synchronize multiple devices together to create a sequence of more than 6 LED segments. The
sequence position is programmed by the A1 resistor programming input, allowing for up to 16 sequence positions. The
SYNC of each MAX25605 should be connected together and the entire SYNC net should be pulled up to VDD through
a 10kΩ pullup resistor. The SYNC function works by counting low-to-high transitions. At the beginning of a multi-device
sequence, the device that is programmed as Device 0 will start. While Device 0 is performing its sequence, an open-drain
MOSFET inside Device 0 will pull SYNC low. Once the sequence of that device has been completed, it will release the
SYNC net, causing a low-to-high transition. At that time, the device that has been configured as Device 1 will begin its
sequence. The sequence will continue with each device waiting for the correct number of low-to-high transitions on SYNC
before they start their own sequence. Once the entire multi-device sequence has completed, the devices will remain in
their ending state until either the EN input or IN input is toggled.
Sequence with Fade
The MAX25605 has the option of adding a logarithmic fade to each step of the LED sequence. If fade is enabled, the LED
will take between 1 and 3 tSEQ periods (programmable by A2) to step from the initial to the final brightness, where tSEQ
is the sequence timing set by RCLK. If dim up is enabled, the LEDs will gradually fade from no light to full brightness. If
dim down is enabled, the LEDs will gradually fade from full brightness to no light.
The LED brightness is faded up or down by gradually increasing or decreasing the PWM duty cycle of the corresponding
switch. When dimming up, each PWM pulse is 1.0625 times longer than the preceding pulse width. When dimming down,
each PWM pulse is multiplied by 0.9375 (reduced) compared to the preceding pulse width.
The PWM dimming frequency that implements the fade effect depends on the following equation:
fPWM =
75
(
NFADE × TSEQ
)
where fPWM is the PWM dimming frequency in kHz, 75 is an internal device constant, NFADE is the FADE number
setting programmed by the A2 resistor (either 1, 2, or 3), and TSEQ is the sequence time, programmed by RCLK, in
milliseconds.
Programming Options
Pin Resistor Programming
The IC provides 16 levels of detection between 0 and 1.2V on the A0, A1 and A2 pins, which are used to configure the
MAX25605 switching behavior. The pins source 400 μA, allowing the use of an external resistor between A0/A1/A2 and
GND to set the voltage level. See Table 1 for recommended resistor values.
Table 1. A0/A1/A2 Recommended Values
A0/A1/A2[3:0] DECODE VALUE
A0/A1/A2 RESISTOR VALUE
(Ω, 1%)
0000
95.3
0001
200
0010
309
0011
422
0100
536
0101
649
0110
768
0111
909
1000
1050
1001
1210
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Maxim Integrated | 16
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Table 1. A0/A1/A2 Recommended Values (continued)
1010
1400
1011
1620
1100
1870
1101
2150
1110
2490
1111
2870
MAX25605 Pin Resistor Decode Table
The decoded A0[3:0] value is used to program the short-LED voltage threshold, as well as the dimming direction.
Table 2. Short-LED Voltage Threshold
A0[2:0]
VSTH
000
1.4V
001
3.6V
010
4.0V
011
5.5V
100
6.0V
101
6.6V
110
7.2V
111
7.7V
Table 3. Dimming Direction
A0[3]
DIMMING BEHAVIOR
0
Dim Down: All switches begin in the open state, allowing all LEDs to turn on. Switches close one at a time, starting from
SW6 and ending with all switches closed and all LEDs off.
1
Dim Up: All switches begin in the closed state with all LEDs shunted off. The switches open one a time, starting from SW1
and ending with all switches open and all LEDs on.
The decoded A1[3:0] value is used to program the order of multiple MAX25605 devices. This allows multiple sequential
controllers to be chained together. A device with a Sequence setting of zero will proceed with its sequence as soon as
its EN pin is asserted. A device with Sequence = N will wait for N pulses on its SYNC input before starting its sequence.
The device outputs a pulse on SYNC as soon as its sequence is complete.
Table 4. Sequence Assignment
A1[3:0]
SEQUENCE ASSIGNMENT
0000
0 (start on power-up)
0001
Wait for 1 SYNC pulse
0010
Wait for 2 SYNC pulses
...
...
1111
Wait for 15 SYNC pulses
The decoded A2[1:0] value is used to select the number of switches being used in the application. Unused switches will
remain closed while EN is high.
Table 5. Number of Switches
A2[1:0]
NUMBER OF SWITCHES
00
NSW = 3 Switches 1/2/3 are active, switches 4/5/6 are not used
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Maxim Integrated | 17
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Table 5. Number of Switches (continued)
01
NSW = 4 Switches 1/2/4/5 are active, switches 3/6 are not used
10
NSW = 5 Switches 1/2/3/4/5 are active, switch 6 is not used
11
NSW = 6 All 6 switches are active
The decoded A2[3:2] value is used to enable fade behavior to the LED dimming, and set the duration of each fade
transition.
Table 6. Fade Setting
A2[3:2]
FADE BEHAVIOR
00
No fade
01
Fade enabled, 1 tSEQ period
10
Fade enabled, 2 tSEQ periods
11
Fade enabled, 3 tSEQ periods
Fault Indicator (FLT)
The FLT output asserts whenever one or more of these conditions is present:
● One or more floating domain gate drivers has detected an open-LED fault. In this case, the switch(es) with Open LED
faults will remain closed until the IN or EN input is toggled
● One or more floating domain gate drivers has detected a short-LED fault condition
● One or more floating domain gate drivers has detected an open-trace condition
● The EN pin is asserted, but the charge pump voltage is below its minimum rated operating voltage (CP_RDY)
● Thermal Warning
● Thermal Shutdown
Faults are cleared if IN falls below the UVLO or EN falls below the logic low threshold.
LED Open Fault Detection and Protection
An open-LED fault is triggered when the voltage between the individual LED switch DRAIN node and switch SOURCE
node exceeds VOTH. The FLT output is driven low and the switch closes for the remainder of the sequence. The fault
condition is cleared when the EN pin goes low or IN goes low.
LED Short Detection
A short-LED fault is triggered when the voltage between the switch DRAIN node and the switch SOURCE node is below
VSTH. VSTH is programmable by the A0 resistor setting such that a single LED short can be detected in applications, no
matter if 1, 2, or 3 LEDs are used per switch. The fault condition is checked while the corresponding switch is open and
current is flowing through the LED or shorted LED segment. Once a short-LED fault has been detected, the FLT output is
driven low. No action is taken by the switch in response to detecting a shorted LED. The device will continue the switch
sequence with the fault flag asserted. The fault condition is cleared when either the EN input or IN input goes low.
The short-LED fault detection is masked during half of the first TSEQ period, TMASK_START, to prevent false fault flags
while the LED driver is starting up. The short-LED fault detection is also masked during the switch transitions at the
beginning of each new TSEQ period to prevent the LED driver transients from falsely triggering a fault flag. The mask
time during switch transitions depends on the programmed TSEQ value and the programmed FADE setting.
If FADE is not used:
TMASK_SW = 0.0256 x tSEQ
where TMASK_SW is the mask filter time in ms and tSEQis the single step sequence period in ms.
If FADE is enabled:
TMASK_SW = 0.034 * NFADE x tSEQ
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Maxim Integrated | 18
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
where NFADE is the fade setting (1, 2, or 3)
EN
I_SOURCE
S1_TOGGLE
S2_TOGGLE
SN_TOGGLE
FLT_MASK
t
t
MASK_START
STARTUP
t
t
t
MASK_SW
t
SEQ1
MASK_SW
t
t
MASK_SW
SEQ2
t
MASK_SW
SEQN
TIME
Figure 2. Fault Mask Timing Diagram
Open Trace Detection
An open-trace fault is triggered when the current through the closed switch is less than ILED_MIN. Once the open-trace
fault has been detected, the FLT output is driven low. No action is taken by the switch in response to detecting an open
trace. the device will continue the switch sequence with the fault flag asserted. The fault status is cleared when either the
EN input or IN input goes low.
The open-trace fault detection is masked during half of the first TSEQ period, TMASK_START, to prevent false fault flags
while the LED driver is starting up. The open-trace fault detection is also masked during the switch transitions at the
beginning of each new TSEQ period to prevent the LED driver transients from falsely triggering a fault flag. The mask
time during switch transitions depends on the programmed TSEQ value and the programmed FADE setting.
The mask time during switch transitions depends on the programmed TSEQ value and the programmed FADE setting.
If FADE is not used:
TMASK_SW = 0.0256 x tSEQ
where TMASK_SW is the mask filter time in ms and TSEQ is the single step sequence period in ms.
If FADE is enabled:
TMASK_SW = 0.034 x NFADE x tSEQ
where NFADE is the fade setting (1, 2, or 3)
Thermal Protection
The IC features an on-chip temperature-protection circuit to prevent the device from overheating.
When the die temperature rises above the thermal-warning threshold (+140ºC), a thermal-warning fault is triggered,
causing the FLT pin to be asserted. No action is taken with the switches. Setting the EN pin low will clear the fault status.
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Maxim Integrated | 19
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
If the die temperature is still above the threshold, the fault will re-assert after the EN input goes high.
When the die temperature rises above the thermal-shutdown threshold (+165ºC), a thermal-shutdown fault is triggered,
causing the FLT pin to be asserted and all switches to close. The thermal-shutdown fault status is reset by power cycling
the device..
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Maxim Integrated | 20
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Applications Information
RCLK Selection
Choose RCLK according to the following equation:
RCLK = (tSEQ - 0.17)/1.045
Where RCLK is the resistance between CLK and GND in kΩ and tSEQ is the single step sequence period in ms.
Fade
The fade is implemented by pulse-width modulating the switches on and off, and gradually changing the PWM duty cycle
from 0% to 100% in the case of dim up or 100% to 0% in the case of dim down. In applications where the fade effect is
enabled, the LED driver should be chosen to have a fast enough transient response to handle the PWM switching of the
sequencing device. If fade is not used, then the transient requirements of the LED driver are less stringent.
For applications where fade is not used, the MAX25611A LED driver is recommended. For applications with fade, the
MAX20078 or MAX25601 should be considered.
Hazard Light
A hazard lighting function can be implemented two different ways. The first method is to pull the EN input low. This
will disable the sequence and force all the switches open so that the LED driver current flows through all the LEDs.
Because the fault-detection algorithm requires the switch transition to recognize fault conditions, the fault-detection block
is disabled in this mode.
A second method of implementing a hazard light is to add a small signal MOSFET to temporarily short out a portion of
the RCLK resistor. This speeds up the sequence such that it appears the LEDs turn on at the same time, although they
are still being sequenced one by one. This allows the fault-detection block to remain active. A sequence time of between
2ms and 3ms is recommended. Refer to the MAX25605 Evaluation Kit for an example. This method is applicable only
when the device is programmed to dim up.
Example Sequential Turn Signal
For certain designs, it may be required that some LEDs are sequenced, while other LEDs turn on simultaneously (nonsequenced). Figure 3 and Figure 4 show an example application circuit and timing diagram, which demonstrate such a
design.
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Maxim Integrated | 21
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
VBAT
LED
DRIVER
LED10
LED9
LED8
FLASHING LEDS
LED7
IN
CPP
CPN
DR6
LED6
DR5
VDD
LED5
DR4
MAX25605
FLT
EN
SYNC
CLK
A0
A1
A2
GND
LED4
SRC4
DR3
LED3
DR2
SEQUENCE LEDS
LED2
DR1
LED1
EP
SRC1
BAT or GND
Figure 3. Example Application Circuit
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Maxim Integrated | 22
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
LED10
FLASHING LEDS
LED9
LED8
LED7
LED6
LED5
LED4
SEQUENCE LEDS
LED3
LED2
LED1
BEFORE TSEQ1
TSEQ1
TSEQ2
TSEQ3
TSEQ4
TSEQ5
TSEQ6
AFTER TSEQ6
TIME
LED DRIVER PWM = HIGH
MAX25605 EN = HIGH
LED DRIVER PWM = LOW
MAX25605 EN = LOW
Lighting Sequence Corresponding to the Figure 4. Circuit
DR_ Leakage Current
The DR_ pins have some leakage current on the order of a few microamps. If the LED driver is off while the MAX25605
is powered, there is the possibility that the LEDs will be very weakly illuminated by the leakage current. In applications
where this is a concern, resistors can be added in parallel with the LEDs to shunt the microamp leakage and keep the
LEDs off.
Thermal Considerations
Heat is primarily transferred from the IC to the PCB through the exposed pad. Connect the exposed pad to a large, solid
ground plane.
Layout Considerations
1. Connect the IN, VDD, CPP/CPN, and DR6 decoupling caps as close as possible to the IC.
2. Connect the exposed pad to a large, solid ground plane. The exposed pad is the primary path for heat to escape the
device.
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Maxim Integrated | 23
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Typical Application Circuits
Typical Applications Circuit
VBAT
LED
DRIVER
IN
CPP
CPN
DR6
DR5
VDD
DR4
MAX25605
SRC4
DR3
FLT
EN
SYNC
CLK
A0
A1
A2
GND
DR2
DR1
EP
SRC1
BAT or GND
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Maxim Integrated | 24
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Typical Application Circuits (continued)
12 Segment Design from a Single LED Driver
VBAT
LED
DRIVER
IN
CPP
CPN
DR6
DR5
VDD
DR4
MAX25605
SRC4
DR3
FLT
EN
SYNC
CLK
A0
A1
A2
GND
DR2
DR1
SRC1
EP
VBAT
IN
CPP
CPN
DR6
DR5
VDD
DR4
MAX25605
SRC4
DR3
FLT
EN
SYNC
CLK
A0
A1
A2
GND
DR2
DR1
EP
SRC1
BAT or GND
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Maxim Integrated | 25
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Typical Application Circuits (continued)
12 Segment Applications Circuit with Separate LED Drivers
VBAT
LED
DRIVER
IN
CPP
CPN
DR6
DR5
VDD
DR4
MAX25605
SRC4
DR3
FLT
EN
SYNC
CLK
A0
A1
A2
GND
DR2
DR1
SRC1
EP
BAT or GND
LED
DRIVER
VBAT
IN
CPP
CPN
DR6
DR5
VDD
DR4
MAX25605
SRC4
DR3
FLT
EN
SYNC
CLK
A0
A1
A2
GND
DR2
DR1
EP
SRC1
BAT or GND
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Maxim Integrated | 26
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Typical Application Circuits (continued)
Five Segment Applications Circuit
VBAT
LED
DRIVER
IN
CPP
CPN
DR6
DR5
VDD
DR4
MAX25605
SRC4
DR3
FLT
EN
SYNC
CLK
A0
A1
A2
GND
DR2
DR1
SRC1
EP
BAT or GND
Four Segment Applications Circuit
VBAT
LED
DRIVER
IN
CPP
CPN
DR6
DR5
VDD
DR4
MAX25605
SRC4
DR3
FLT
EN
SYNC
CLK
A0
A1
A2
GND
DR2
DR1
EP
SRC1
BAT or GND
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Maxim Integrated | 27
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Typical Application Circuits (continued)
Three Segment Applications Circuit
VBAT
LED
DRIVER
IN
CPP
CPN
DR6
DR5
VDD
DR4
MAX25605
SRC4
DR3
FLT
EN
SYNC
CLK
A0
A1
A2
GND
DR2
DR1
EP
SRC1
BAT or GND
Ordering Information
Part Number
Temp Range
Pin-Package
MAX25605ATP/VY+
-40°C to +125°C
20 TQFN-EP (SW)*
MAX25605AUP/V+
-40°C to +125°C
20 TSSOP-EP*
/V denotes an automotive-qualified part.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
(SW) = Side wettable.
www.maximintegrated.com
Maxim Integrated | 28
MAX25605
6 Switch Sequential LED Controller For Automotive
Lighting Systems
Revision History
REVISION
NUMBER
REVISION
DATE
DESCRIPTION
0
6/20
Initial release
1
11/20
Updated Electrical Characteristics, Ordering Information
PAGES
CHANGED
—
7, 8, 27
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max
limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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