DATA SHEET
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Configurable 180 mA
6-LED Driver with I2C Control
FAN5702
WLCSP16 1.61 x 1.61 x 0.586
CASE 567SB
Description
The FAN5702 is a highly integrated and configurable
charge−pump− based multi−LED driver. The device can drive up to six
LEDs in parallel with a total output current of 180 mA. Regulated
internal current sinks deliver excellent current and brightness
matching to all LEDs.
The FAN5702 has an I 2 C interface that allows the user
to independently control the brightness with a default grouping
of 2,1,1,1,1 for a maximum of five independent lighting channels.
The LED driver can be programmed in a multitude of configurations
to address broad lighting requirements for different platforms. Each
LED can be configured through I2C as five independent channels
(Group A has two LEDs by default) or any additional LEDs can join
Group A to increase the backlighting needs as the display size
increases. The device offers a second dimming control using
the EN/PWM pin. Applying a PWM dimming signal to this pin allows
control of the dimming of Group A LEDs so that the average current is
the linear value multiplied by the PWM dimming duty−cycle.
The device provides excellent efficiency, without an inductor, by
operating the charge pump in 1.5x or pass−through mode.
The FAN5702 can be ordered with default ISET values of 30 mA,
20 mA, 15 mA, or 8 mA. The default ISET is always determined by
the ISET ordered (see Ordering Information).
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
MARKING
DIAGRAM
Six (6) Parallel LEDs (up to 30 mA Each)
Total Package Load Current Capability: 180 mA
Group from 2 to 6 LEDs for Flexible Backlighting
I2C Interface for Easy Programming
>600:1 Dimming Ratio for 100 Hz PWM Frequency
Logarithmically Controlled Dimming with 64 Steps
Secondary Brightness Control Using PWM Dimming
up to 20 kHz in Conjunction with I2C Dimming
− Dynamic Backlight Control (DBC) to Reduce
Current Consumption
Up to 92% Efficiency
Built−in 1.5x Charge Pump with Low Drop−Out Bypass
Switch and Automatic Switching to 1x Mode
1.2 MHz Switching Frequency for Small−Sized Capacitors
16−Bump 1.6 mm x 1.6 mm WLCSP (0.6 mm Height)
16−Lead 3.0 mm x 3.0 mm UQFN (0.55 mm Height)
These are Pb−Free and Halide Free Devices
Y2
K
&.
&2
Z
Y2&K
&.&2&Z
= Device Marking
= Lot Code
= Pin One Dot
= 2 Digit Date Code
= Assembly Plant Code
MARKING
DIAGRAM
1
UQFN16 3 x 3, 0.5P
CASE 523BB
$Y
&Z
&2
K
5702C xx
xx
$Y&Z&2&K
5702
C xx
= onsemi Logo
= Assembly Plant Code
= Numeric Date Code
= Lot Code
= Specific Device Code
= 30, 20, 15, 08
ORDERING INFORMATION
See detailed ordering and shipping information on page 15 of
this data sheet.
Applications
• LCD Backlighting
• Mobile Handsets / Smartphones
• Portable Media Players
© Semiconductor Components Industries, LLC, 2010
August, 2021 − Rev. 2
1
Publication Order Number:
FAN5702/D
FAN5702
Typical Application
VOUT
C1+
1 mF
CHARGE
PUMP
C2–
D2A
GND
EN /
PWM
SDA
LOGIC AND
CONTROL
SCL
CURRENT SINKS
VIN
1 mF
D1A
GROUP A expandable to 6 LEDs
C2+
1 mF
COUT
1 mF
C1–
D3
D4
D5
D6
Figure 1. Typical Application
WLCSP Pin Configuration
A1
A2
A3
A4
A4
A3
A2
A1
B1
B2
B3
B4
B4
B3
B2
B1
C1
C2
C3
C4
C4
C3
C2
C1
D1
D2
D3
D4
D4
D3
D2
D1
Bumps Facing Up
Bumps Facing Down
Figure 2. WLCSP−16, 0.4 mm Pitch, 1.61 x 1.61 mm
PIN DEFINITIONS
Pin #
Name
Description
D2
VIN
Input Supply Voltage. Connect to 2.7 – 5.5 VDC input power source.
B4
GND
Ground
D1
VOUT
Charge Pump Output Voltage. Connect to LED anodes.
D3, D4
C1+, C1−
Charge pump flying capacitor #1
C3, C4
C2+, C2−
Charge pump flying capacitor #2
A1, A2
B1, B2
C1, C2
D2A, D1A
D4, D3
D6, D5
LED Outputs
A4
EN / PWM
Enable / PWM dimming input. By default, this pin acts as a simple enable / disable function.
When this pin is HIGH, normal operation is enabled. When LOW, the IC is reset and all
functions (including I2C communications) are disabled. By setting General Purpose register
bit 7 = 1, the pin functions as a PWM dimming input for Group A. To restore the Enable
function, the General Purpose register bit 7 must be set LOW.
B3
SDA
I2C interface serial data
A3
SCL
I2C interface serial clock
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2
FAN5702
UQFN Pin Configuration
5
8
9
4
12
1
16
13
Bottom View
Figure 3. UQFN−16, 0.5 mm Pitch, 3 mm x 3 mm
PIN DEFINITIONS
Pin #
Name
11
VIN
Input Supply Voltage. Connect to 2.7 – 5.5 VDC input power source.
Description
6
GND
Ground
12
VOUT
Charge Pump Output Voltage. Connect to LED anodes.
10, 9
C1+, C1−
Charge pump flying capacitor #1
8, 7
C2+, C2−
Charge pump flying capacitor #2
1, 2
15, 16
13, 14
D2A, D1A
D4, D3
D6, D5
LED Outputs
4
EN / PWM
Enable / PWM dimming input. By default, this pin acts as a simple enable / disable function.
When this pin is HIGH, normal operation is enabled. When LOW, the IC is reset and all
functions (including I2C communications) are disabled. By setting General Purpose register
bit 7 = 1, the pin functions as a PWM dimming input for Group A. To restore the Enable
function, the General Purpose register bit 7 must be set LOW.
5
SDA
I2C interface serial data
3
SCL
I2C interface serial clock
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3
FAN5702
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Parameter
VIN, VOUT Pins
Other Pins (Note 1)
ESD
Min
Max
Unit
−0.3
6.0
V
−0.3
Electrostatic Discharge
Protection Level
VIN + 0.3
Human Body Model per JESD22−A114
3.0
Charged Device Model per JESD22−C101
2.0
V
kV
TJ
Junction Temperature
−40
+150
°C
TSTG
Storage Temperature
−65
+150
°C
+260
°C
TL
Lead Soldering Temperature, 10 Seconds
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Lesser of VIN + 0.3 V or 6.0 V.
RECOMMENDED OPERATING CONDITIONS
Symbol
Min
Max
Unit
Supply Voltage
2.7
5.5
V
VLED
LED Forward Voltage
2.0
4.0
V
TA
Ambient Temperature
−40
+85
°C
TJ
Junction Temperature
−40
+125
°C
VIN
Parameter
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
THERMAL PROPERTIES
Symbol
θJA
Parameter
Junction−to−Ambient Thermal Resistance
(Note 2)
Min
Typ
Max
Unit
WLCSP
−
80
−
°C/W
UQFN
−
49
−
2. Junction−to−ambient thermal resistance is a function of application and board layout. This data is measured with four−layer 2s2p boards
in accordance to JESD51−7 JEDEC standard. Special attention must be paid not to exceed junction temperature TJ(max) at a given ambient
temperate TA.
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FAN5702
ELECTRICAL CHARACTERISTICS
Unless otherwise specified: VIN = 2.7 V to 5.5 V; TA = −40°C to +85°C; and ENA, EN3, EN4, EN5, and EN6 = 1. Typical values are
VIN = 3.6 V, TA = 25°C, ILED = 20 mA, and LED cathode terminals = 0.4 V. Circuit and components are according to Figure 1.
Parameter
Min
Typ
Max
Unit
1.5x Mode, No LEDs
−
4.4
−
mA
1x Mode, No LEDs
−
0.3
−
Shutdown Supply Current
EN = 0, VIN = 4.5 V, TA = −40°C to +85°C
−
0.1
2.0
mA
VUVLO
Under−Voltage Lockout Threshold
VIN Rising
−
2.55
2.70
V
VIN Falling
2.20
2.40
−
VUVHYST
Under−Voltage Lockout Hysteresis
−
150
−
mV
TLIMIT
Thermal Shutdown
−
150
−
°C
THYST
Thermal Shutdown Hysteresis
−
20
−
°C
−10%
ISET
+10%
mA
Symbol
Test Condition
POWER SUPPLIES AND THERMAL PROTECTION
IQ
ISD
Quiescent Supply Current
LED CURRENT SINKS
Absolute Current Accuracy
VCATHODE = 0.4 V; see option for ISET
Maximum Diode Current (Note 3)
ILED = ISET
−
30
−
mA
LED Current Matching (Note 4)
VCATHODE = 0.4 V, ILED = ISET
−
0.4
3.0
%
VDTH
1x to 1.5x Gain Transition
Threshold
LED Cathode Voltage Falling
−
100
−
mV
VHR
Current Sink Headroom (Note 5)
ILED = 90% ILED(NOMINAL)
−
65
−
mV
−
−
20
kHz
0.15
−
100.00
%
1.5x Mode
−
2.4
−
W
1x Mode
−
0.9
−
0.9
1.2
1.5
MHz
−
250
−
ms
ILED
ILED(MAX)
ILED_MATCH
PWM DIMMING
fPWM
PWM Switching Frequency
tON_LED(MINIMUM) = 15 ms
DPWM
PWM Duty−Cycle
fPWM = 100 Hz
CHARGE PUMP
ROUT
fSW
tSTART
Output Resistance
Switching Frequency
Startup Time
VOUT = 90% of VIN
LOGIC INPUTS (EN, SDA, SCL)
VIH
HIGH−Level Input Voltage
1.2
−
−
V
VIL
LOW−Level Input Voltage
−
−
0.4
V
Maximum Input Voltage
−
1.8
5.5
V
−
0.01
1.00
mA
VIMAX
IIN
Input Bias Current
Input Tied to GND or VIN
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
3. The maximum total output current for the IC should be limited to 180 mA. The total output current can be split between the two groups
(IDxA = IDxB = 30 mA maximum). Under maximum output current conditions, special attention must be given to input voltage and LED
forward voltage to ensure proper current regulation. See the Maximum Output Current section of the datasheet for more information.
4. For the two groups of current sinks on a part (group A and group B), the following are determined: the maximum sink current in the group
(MAX), the minimum sink current in the group (MIN), and the average sink current of the group (AVG). For each group, two matching numbers
are calculated: (MAX−AVG)/AVG and (AVG−MIN)/AVG. The largest number of the two (worst case) is considered the matching value for
the group. The matching value for a given part is considered to be the highest matching value of the two groups. The typical specification
provided is the most likely norm of the matching value for all parts.
5. For each Dxx pin, headroom voltage is the voltage across the internal current sink connected to that pin. VHRx = VOUT − VLED. If headroom
voltage requirement is not met, LED current regulation is compromised.
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FAN5702
Typical Characteristics
VIN = 3.6 V, TA = 25°C, ILED = 20 mA, and LED cathode terminals = 0.4 V.
Figure 5. LED Current Match for All 6 LED Channels
at ILED = 20 mA
Figure 4. Efficiency with LED Current of 8 mA
and 20 mA
Figure 6. LED Current Variations vs. Temperature
Figure 7. Shutdown Current vs. Input Voltage
Figure 8. Switching Frequency Over−Temperature
with LED Current at 20 mA
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FAN5702
Typical Characteristics (continued)
VIN = 3.6 V, TA = 25°C, ILED = 20 mA, and LED cathode terminals = 0.4 V.
Figure 10. Mode Transition from 1.5x to 1x Mode
Using PWM Control (VCATHODE Ramp Down) at 2%
Duty Cycle
Figure 9. Mode Transition from 1x to 1.5x Mode
Using PWM Control (VCATHODE Ramp Up) at 2%
Duty Cycle
Figure 11. Line Transient Response in 1x Mode,
VIN = 3.6 V − 4.2 V, ILEDx = 20 mA
Figure 12. Line Transient Response in 1.5x Mode,
VIN = 2.7 V − 3.3 V, ILED = 20 mA
Figure 13. Line Transient from 1x to 1.5x Mode,
VIN = 3.2 V − 4.1 V, ILEDx = 20 mA
Figure 14. Soft−Start with SDA and SCL
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FAN5702
Typical Characteristics (continued)
VIN = 3.6 V, TA = 25°C, ILED = 20 mA, and LED cathode terminals = 0.4 V.
Figure 15. Linear Dimming Via I2C Interface, VIN = 3.6 V,
ILEDx = 20 mA, and tRAMP = 6.4 ms
Figure 16. PWM Dimming, VIN = 3.6 V, ILEDx = 20 mA,
and EN = 1 kHz with 20% Duty Cycle
Figure 17. PWM and Linear (Via I2C) Dimming, VIN = 3.6 V,
ILEDx = 20 mA, and EN = 1 kHz with 20% Duty Cycle
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FAN5702
I2C TIMING SPECIFICATIONS
Symbol
Parameter
fSCL
Min
Typ
Max
Unit
Standard Mode
Conditions
−
−
100
kHz
Fast Mode
−
−
400
Bus−Free Time between STOP and START
Conditions
Standard Mode
−
4.7
−
Fast Mode
−
1.3
−
START or Repeated START Hold Time
Standard Mode
−
4
−
ms
Fast Mode
−
600
−
ns
Standard Mode
−
4.7
−
ms
Fast Mode
−
1.3
−
ns
Standard Mode
−
4
−
ms
Fast Mode
−
600
−
ns
Standard Mode
−
4.7
−
ms
Fast Mode
−
600
−
ns
Standard Mode
−
250
−
ns
Fast Mode
−
100
−
ns
Standard Mode
0
−
3.45
ms
Fast Mode
0
−
900.00
ns
SCL Clock Frequency
tBUF
tHD;STA
tLOW
SCL LOW Period
tHIGH
SCL HIGH Period
tSU;STA
Repeated START Setup Time
tSU;DAT
Data Setup Time
tHD;DAT
Data Hold Time
tRCL
SCL Rise Time
tFCL
SCL Fall Time
tRDA
SDA Rise Time (Note 6)
tFDA
SDA Fall Time
tSU;STO
Stop Condition Setup Time
CB
ms
Standard Mode
20 + 0.1 CB
1000
ns
Fast Mode
20 + 0.1 CB
300
ns
Standard Mode
20 + 0.1 CB
300
ns
Fast Mode
20 + 0.1 CB
300
ns
Standard Mode
20 + 0.1 CB
1000
ns
Fast Mode
20 + 0.1 CB
300
ns
Standard Mode
20 + 0.1 CB
300
ns
Fast Mode
20 + 0.1 CB
300
ns
Standard Mode
−
4
−
ms
Fast Mode
−
600
−
ns
−
−
400
pF
Capacitive Load for SDA and SCL
6. Rise time of SCL after a repeated START condition and after an ACK bit.
Timing Diagram
tF
tSU; STA
tBUF
SDA
tR
SCL
tHD; STA
tLOW
TSU; DAT
tHD; STO
tHIGH
tHD; STA
REPEATED
START
START
Figure 18. I2C Interface Timing for Fast and Slow Modes
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STOP
START
FAN5702
Circuit Description
The FAN5702 is a white LED driver system based on an
adaptive 1.5x charge pump capable of supplying up to
180 mA of total output current. The tightly matched current
sinks ensure uniform brightness between the LEDs. Each
LED has a common anode configuration with its peak drive
current set during manufacturing (see Ordering Information
and ISET). An I2C−compatible interface is used to vary the
brightness within the individual current sinks as well as
configure the grouping. Each LED is controlled with 64
exponentially spaced analog brightness control levels
through I2C, as indicated in Table 1. For maximum
flexibility, the FAN5702 can be programmed with five
independently controlled LED banks; by default, arranged
as 2,1,1,1,1 (first two LEDs represent Group A). Through
I2C, the device can be reconfigured to add up to six LEDs to
Group A as needed by application requirements.
When the EN pin HIGH, I2C interface is enabled. The
LEDs can be turned on/off by writing to the General Purpose
register. The user can always communicate via I2C with the
device to change register settings regardless of whether any
LED is on or off.
PWM Dimming
By programming the General Purpose register bit 7 = 1,
the EN pin is reappropriated to a PWM dimming input.
Applying a PWM signal to this pin controls the LED current
waveform to be ON when the PWM dimming pin is HIGH
and OFF when the PWM dimming pin is LOW. By using this
pin in conjunction with the I2C register dimming, the part
can achieve higher dimming resolution. For instance, an
8−bit PWM dimming signal applied along with the 6−bit
register dimming yields better than 14 bits of resolution.
To change the PWM dimming pin back to the EN
function, set the General Purpose register bit 7 to 0.
Charge Pump
The charge pump operates in either 1x mode, where VOUT
is connected to VIN through a bypass switch, or in 1.5x
mode. The circuit operates in 1x mode until the LED with the
highest forward voltage (VLED(MAX)) can no longer
maintain current regulation. At that point, 1.5x Mode
begins. If the lowest active cathode voltage is greater than
1.8 V, the charge pump switches back to 1x Mode.
Register Controlled Brightness
The DC value of the LED current is modulated according
to the values in Table 1. Current is expressed as a percentage
of the full scale current and is illustrated with a 20 mA ISET.
IC Enable
By default the General Purpose register bit 7 = 0, the EN
pin functions as enable/disable. When the EN pin is LOW,
all circuit functions, including I2C, are disabled and the
registers are set to their default values.
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FAN5702
Table 1. BRIGHTNESS CONTROL
Table 1. BRIGHTNESS CONTROL (continued)
Dimming Code
(Bx5 − Bx0)
Current Level
ILED (mA)
(ISET = 20 mA)
Dimming Code
(Bx5 − Bx0)
Current Level
ILED (mA)
(ISET = 20 mA)
000000
0.125%
0.025
100000
5.314%
1.063
000001
0.188%
0.038
100001
5.936%
1.188
000010
0.249%
0.050
100010
6.565%
1.313
000011
0.312%
0.063
100011
7.313%
1.463
000100
0.374%
0.075
100100
8.059%
1.613
000101
0.438%
0.088
100101
8.938%
1.788
000110
0.499%
0.100
100110
9.876%
1.975
000111
0.560%
0.113
100111
10.874%
2.175
001000
0.622%
0.125
101000
12.005%
2.400
001001
0.692%
0.138
101001
13.253%
2.650
001010
0.750%
0.150
101010
14.618%
2.925
001011
0.810%
0.163
101011
16.124%
3.225
001100
0.875%
0.175
101100
17.881%
3.575
001101
0.938%
0.188
101101
19.875%
3.975
001110
1.004%
0.200
101110
22.121%
4.425
001111
1.124%
0.225
101111
24.621%
4.925
010000
1.250%
0.250
110000
27.376%
5.475
010001
1.375%
0.275
110001
30.373%
6.075
010010
1.499%
0.300
110010
33.623%
6.725
010011
1.625%
0.325
110011
37.124%
7.425
010100
1.750%
0.350
110100
40.873%
8.175
010101
1.881%
0.375
110101
44.875%
8.975
010110
2.063%
0.413
110110
49.124%
9.825
010111
2.249%
0.450
110111
53.624%
10.725
011000
2.438%
0.488
111000
58.375%
11.675
011001
2.687%
0.538
111001
63.378%
12.675
011010
2.939%
0.588
111010
68.625%
13.725
011011
3.186%
0.638
111011
74.122%
14.825
011100
3.562%
0.713
111100
79.874%
15.975
011101
3.936%
0.788
111101
85.873%
17.175
011110
4.310%
0.863
111110
92.373%
18.475
011111
4.813%
0.963
111111
100.000%
20.000
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FAN5702
Brightness Ramp Control
Register Addressing
When changing the group A brightness, the IC steps
through the brightness table at rate programmed by the
RAMP register, indicated in Table 2.
The FAN5702 has six user−accessible registers.
Table 4. I2C REGISTER ADDRESS
Default Value
Table 2. GROUP A BBRIGHTNESS RAMP CONTROL
RAMP [1:0]
Time per Step
Full−Scale Ramp Time
00
0.1 ms
6.4 ms
01
25 ms
1600 ms
10
50 ms
3200 ms
11
100 ms
6400 ms
VOUT Short−Circuit Protection
The FAN5702 has integrated protection circuitry to
prevent the device from being short circuited when the
output voltage falls below 2 V. If this occurs, FAN5702 turns
off the charge pump and the LED driver outputs, but a small
bypass switch is left on. The device monitors the output
voltage to determine if it is still in short circuit condition and,
once it has passed, soft−starts and returns to normal
operation.
Address
7
6
5
4
3
2
1
0
HEX
GENERAL
0
0
0
0
0
0
0
0
10
CONFIG
0
0
0
0
0
0
0
0
20
CHA
1
1
1
1
1
1
1
1
A0
CH3
1
1
1
1
1
1
1
1
30
CH4
1
1
1
1
1
1
1
1
40
CH5
1
1
1
1
1
1
1
1
50
CH6
1
1
1
1
1
1
1
1
60
7. Bold identifies bits that cannot be overwritten.
Bus Timing
As shown in Figure 19 data is normally transferred when
SCL is LOW. Data is clocked in to the FAN5702 on the
rising edge of SCL. Typically, data transitions shortly at or
after the falling edge of SCL to allow ample time for the data
to set up before the next SCL rising edge.
VOUT Over−Voltage Protection
If the output voltage goes above 6 V, the FAN5702 shuts
down until this condition has passed. The charge pump and
LED driver outputs are turned off. Once this condition has
passed, the FAN5702 soft−starts into normal operation.
Data change allowed
SDA
TH
I2C Interface
The FAN5702’s serial interface is compatible with
standard and fast I2C bus specifications. The FAN5702’s
SCL line is an input and its SDA line is a bi−directional
open−drain output, meaning that it can only pull down the
bus when active. The SDA line only pulls LOW during data
reads and when signaling ACK. All data is shifted in MSB
(bit 7) first.
TSU
SCL
Figure 19. Data Transfer Timing
Each bus transaction begins and ends with SDA and SCL
HIGH. A transaction begins with a START condition, which
is defined as SDA transitioning from 1 to 0 with SCL HIGH,
as shown in Figure 20.
Slave Address
The FAN5702’s slave address is 6CH.
SDA
THD; STA
Slave Address
MS Bit
Table 3. I2C SLAVE ADDRESS
7
6
5
4
3
2
1
0
0
1
1
0
1
1
0
R/W
SCL
Figure 20. Start Bit
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FAN5702
A transaction ends with a STOP condition, which is
defined as SDA transitioning from 0 to 1 with SCL HIGH,
as shown in Figure 21.
During a read from the FAN5702 (Figure 24, the master
issues a “Repeated Start” after sending the register address
and before resending the slave address. The “Repeated
Start” is a 1−to−0 transition on SDA while SCL is HIGH, as
shown in Figure 22.
Slave Releases Master Drives
tHD; STO
ACK(0) or
NACK(1)
SDA
tSU; STA tHD; STA
Slave Releases
ACK(0) or
NACK(1)
SDA
SCL
SLADDR
MS Bit
SCL
Figure 21. Stop Bit
Figure 22. Repeated Start Timing
Read and White Transaction
The following figures outline the sequences for data read and write. Bus control is signified by the shading of the packet,
defined as Master Drives Bus and Slave Drives Bus . All addresses and data are MSB first.
Table 5. I2C BIT DEFINITIONS FOR FIGURE 23 AND FIGURE 24
Symbol
Definition
S
START. See Figure 20
A
ACK. The slave drives SDA to 0 to acknowledge the preceding packet.
A
NACK. The slave sends a 1 to NACK the preceding packet.
R
Repeated START. See Figure 22
P
STOP. See Figure 21
7 bits
S
Slave Address
0
0
8 bits
0
8 bits
0
A
Reg Addr
A
Data
A
P
Figure 23. Write Transaction
7 bits
S
Slave Address
0
0
8 bits
0
A
Reg Addr
A
7 bits
R
Slave Address
Figure 24. Read Transaction
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13
1
0
8 bits
1
A
Data
A
P
FAN5702
REGISTER DESCRIPTIONS
The following tables define the operation of each register bit. Bold values are power−up defaults. These values apply only to I2C version of
the part.
Name
Bit
GENERAL
Default Value
Default: 00H
Description
General Purpose Register
ADDR = 10 H
7
PWM
0
Setting this bit = 1 changes the EN pin to function as a PWM dimming input for group A
LEDs. This bit must be set to zero for the chip to be disabled.
6, 5
FS1, FS2
00
00 = 20 mA (default), 01 = 30 mA, 10 = 15 mA, 11 = 8 mA when I2C is used.
4
EN6
0
Default = 0 (Off), LED Channel Active = 1
3
EN5
0
Default = 0 (Off), LED Channel Active = 1
2
EN4
0
Default = 0 (Off), LED Channel Active = 1
1
EN3
0
Default = 0 (Off), LED Channel Active = 1
0
ENA
0
Default = 0 (Off), LED Channel Active = 1
CONFIG
Default: 00H
Configuration Register
ADDR = 20 H
7
T56
0
Tie channel 5 and 6 together. Default = 0 (Separate). Group 5 & 6 = 1. Both currents
are set by CH5 register. T56 is overwritten by either S5A or S6A.
6
T34
0
Tie channel 3 and 4 together. Default = 0 (Separate). Group 3 & 4 = 1. Both currents
are set by the CH3 register. T34 is overwritten by either S3A or S4A.
5
S6A
0
CH6 group configuration. Independent = 0 (default); part of group A = 1.
4
S5A
0
CH5 group configuration. Independent = 0 (default); part of group A = 1.
3
S4A
0
CH4 group configuration. Independent = 0 (default); part of group A = 1.
2
S3A
0
CH3 group configuration. Independent = 0 (default); part of group A = 1.
1, 0
RS1, RS0
00
Sets current ramp rate for group A channels
Vendor ID bits. These bits can be used to distinguish between vendors via I2C. Writing
to these bits does not change their value.
CHA
Default: FFH
Group A Brightness Control
7:6
Reserved
11
5:0
Brightness A
0 − 63
00 − 3FH
CH3
Default:
Reserved
11
5:0
Brightness 3
0 − 63
00 − 3FH
Default: FFH
Reserved
11
5:0
Brightness 4
0 − 63
00 − 3FH
Default: FFH
6−bit value that controls channel 3 brightness per values in Table 1
ADDR = 40 H
Writing to these bits does not change their value.
6−bit value that controls channel 3 brightness per values in Table 1
Channel 5 Brightness Control
7:6
Reserved
11
5:0
Brightness 5
0 − 63
00 − 3FH
CH6
ADDR = 30 H
Writing to these bits does not change their value.
Channel 4 Brightness Control
7:6
CH5
6−bit value that controls group A brightness per values in Table 1
Channel 3 Brightness Control
7:6
CH4
ADDR = A0H
Default: FFH
ADDR = 50 H
Writing to these bits does not change their value.
6−bit value that controls channel 3 brightness per values in Table 1
Channel 6 Brightness Control
7:6
Reserved
11
5:0
Brightness 6
0 − 63
00 − 3FH
ADDR = 60 H
Writing to these bits does not change their value.
6−bit value that controls channel 3 brightness per values in Table 1
The table below pertains to the Marketing Outline drawing on the following page…
PRODUCT−SPECIFIC DIMENSIONS
Product
D
E
X
Y
FAN5702UCxx
1.610 mm
1.610 mm
0.205 mm
0.205 mm
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14
FAN5702
ORDERING INFORMATION
Part Number
LED Current (ISET)
Temperature Range
Package
Packing Method†
FAN5702UC30X
30 mA
−40 to 85°C
WLCSP−16
3000 / Tape & Reel
FAN5702UC20X
20 mA
FAN5702UC15X
15 mA
FAN5702UC08X
8 mA
FAN5702UMP30X
30 mA
UQFN−16
3000 / Tape & Reel
FAN5702UMP20X
20 mA
FAN5702UMP15X
15 mA
FAN5702UMP08X
8 mA
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
onsemi is licensed by the Philips Corporation to carry the I2C bus protocol.
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15
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
UQFN16 3x3, 0.5P
CASE 523BB
ISSUE O
DOCUMENT NUMBER:
DESCRIPTION:
98AON13703G
UQFN16 3x3, 0.5P
DATE 31 OCT 2016
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
PAGE 1 OF 1
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically
disclaims any and all liability, including without limitation special, consequential or incidental damages. ON Semiconductor does not convey any license under its patent rights nor the
rights of others.
© Semiconductor Components Industries, LLC, 2019
www.onsemi.com
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
WLCSP16 1.61x1.61x0.586
CASE 567SB
ISSUE O
DOCUMENT NUMBER:
DESCRIPTION:
98AON16595G
WLCSP16 1.61x1.61x0.586
DATE 30 NOV 2016
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
PAGE 1 OF 1
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically
disclaims any and all liability, including without limitation special, consequential or incidental damages. ON Semiconductor does not convey any license under its patent rights nor the
rights of others.
© Semiconductor Components Industries, LLC, 2019
www.onsemi.com
onsemi,
, and other names, marks, and brands are registered and/or common law trademarks of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates
and/or subsidiaries in the United States and/or other countries. onsemi owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property.
A listing of onsemi’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. onsemi reserves the right to make changes at any time to any
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