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MAX17651
4V to 60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
General Description
The MAX17651 ultra-low quiescent current, high-voltage
linear regulator is ideal for use in industrial and batteryoperated systems. The device operates from a 4V to 60V
input voltage, delivers up to 100mA of load current, and
consumes only 8μA of quiescent current at no load. The
device consumes only 0.9μA current when in shutdown.
Output voltage is adjustable in the 0.6V to 58V voltage
range. Feedback voltage accuracy is ±2% over temperature.
An open-drain, active-low PGOOD pin provides a powergood signal to the system upon achieving successful
regulation of the output voltage. The device also incorporates
an enable pin (EN) that allows the user to turn the part
on or off. The device has a thermal shutdown feature that
shuts down the part when the die temperature exceeds
165°C. The MAX17651 operates over the -40°C to +125°C
industrial temperature range and is available in a 6 lead,
compact TSOT and a 6-pin (3mm x 3mm) TDFN packages.
Applications
●
●
●
●
●
Low-Current Industrial Power Supplies
Battery-Powered Equipment
Post Regulator for Switching Power Supplies
Utility Meters
Remote Sensors
Benefits and Features
● Extremely Easy to Use
• Only 4 External Components Required
• Stable with Tiny 4.7μF, 0805 Output Capacitor
• All Ceramic Capacitors, Compact Layout
● Reduces Number of Linear Regulators to Stock
• Wide 4V to 60V Input Voltage Range
• Adjustable 0.6V to 58V Output
• Up to 100mA Load Current Capability
● Operates Reliably in Adverse Industrial Environments
• Built-In Output Voltage Monitoring with PGOOD Pin
• High-Voltage ENABLE Input
• Low 8μA Quiescent Current
• Low Dropout Voltage of 560mV at 100mA
• Overload Protection
• Overtemperature Protection
• Wide -40°C to +125°C Ambient Operating
Temperature Range / -40°C to +150°C Junction
Temperature Range
Ordering Information appears at end of data sheet.
Application Circuit for 5V Output
VIN
IN
6.1V TO 60V
MAX17651
EN
CIN
0.1µF
VOUT
OUT
GND
PGOOD
COUT
4.7µF
5V
R1
432kΩ
FB
R2
59kΩ
19-7454; Rev 4; 12/21
© 2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.
One Analog Way, Wilmington, MA 01887 U.S.A.
|
Tel: 781.329.4700
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© 2021 Analog Devices, Inc. All rights reserved.
MAX17651
4V to 60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
Absolute Maximum Ratings
IN to GND...............................................................-0.3V to +70V
EN, OUT to GND............................................. -0.3V to IN + 0.3V
FB, PGOOD to GND................................................-0.3V to +6V
Output Short-Circuit Duration.....................................Continuous
Operating Temperature Range (Note 1)............ -40°C to +125°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -65°C to +160°C
Lead Temperature (soldering 10s)...................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only; 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.
Note 1: Junction temperature greater than +125°C degrades operating lifetimes.
Package Information
PACKAGE TYPE: 6 TSOT
Package Code
Z6+1
Outline Number
21-0114
Land Pattern Number
90-0242
THERMAL RESISTANCE, FOUR-LAYER BOARD
Continuous Power Dissipation (TA = +70°C)
(derate 9.1mW/°C above +70°C)
727mW
Junction to Ambient (θJA)
110°C/W
Junction-to-Case Thermal Resistance (θJC)
50°C/W
PACKAGE TYPE: 6 TDFN
Package Code
T633+2C
Outline Number
21-0137
Land Pattern Number
90-0058
THERMAL RESISTANCE, FOUR-LAYER BOARD
Continuous Power Dissipation (TA = +70°C)
(derate 23.80mW/°C above +70°C)
1904.80mW
Junction to Ambient (θJA)
42°C/W
Junction-to-Case Thermal Resistance (θJC)
9°C/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.
www.analog.com
Analog Devices │ 2
MAX17651
4V to 60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
Electrical Characteristics
(VIN = VEN = 12V, VFB = VOUT, PGOOD = OPEN, VGND = 0V,, COUT = 4.7µF TA = -40°C to +125°C, unless otherwise noted. Typical
values are at TA = +25°C. All voltages are referenced to GND, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
60
V
0.9
1.8
µA
8
15
µA
INPUT SUPPLY (VIN)
Input Voltage Range
VIN
4
Input Supply Current
IIN-SH
VEN = 0V, shutdown mode
IIN-Q
VEN = VIN, ILOAD = 0mA
VENR
VEN rising
VENF
VEN falling
IEN
TA = +25°C
ENABLE (EN)
EN Threshold
EN Leakage Current
2
V
-100
0.6
V
+100
nA
FEEDBACK (FB)
FB Regulation Voltage
FB Input Leakage Current
VFB-REG
IFB
0.588
VFB = 0.6V, TA = 25°C
-25
VIN = 5.5V, VOUT = 4.5V
101
0.6
0.612
V
+25
nA
140
165
mA
CURRENT LIMIT
Current Limit Threshold
ILIMIT
PGOOD
PGOOD Rising Threshold
VPGOOD-RISE
VFB rising
89.5
92
94.5
%
PGOOD Falling Threshold
VPGOOD-FALL
VFB falling
87
89.5
92
%
0.2
V
1
µA
PGOOD Output Level Low
IPGOOD = 1mA
PGOOD Output leakage Current
VPGOOD = 5.5V, TA = +25°C
OUTPUT VOLTAGE
VIN = 4.5V, ILOAD = 50mA
280
550
VIN = 4.5V, ILOAD = 100mA
560
1100
Line Regulation
VIN = 4V to 60V, VOUT = FB,
ILOAD = 1mA
0.1
Load Regulation
0.1mA < ILOAD < 100mA, VOUT = FB
0.5
Temperature rising
165
°C
15
°C
Dropout Voltage
VDO
mV
%
1.2
%
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
Note 2: All electrical specifications are 100% production tested at TA = +25°C. Specifications over the operating temperature range
are guaranteed by design and characterization.
www.analog.com
Analog Devices │ 3
MAX17651
4V to 60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
Typical Operating Characteristics
(VIN = VEN = 7V, VOUT = 5V, COUT = 4.7µF TA= +25°C, unless otherwise noted.)
NO LOAD SUPPLY CURRENT
vs SUPPLY VOLTAGE
SHUTDOWN CURRENT vs
SUPPLY VOLTAGE
2.5
10.5
toc2
SHUTDOWN SUPPLY CURRENT
VS. TEMPERATURE
2.5
toc3
2
2
9.5
9
ISHDN (μA)
10
ISHDN (µA)
NO LOAD SUPPLY CURRENT(µA)
11
toc1
1.5
1
VIN = 60V
1.5
VIN = 6V
1
+85°C
VIN = 12V
VIN = 24V VIN = 48V
8.5
7.5
+25°C
0.5
8
5
0
10 15 20 25 30 35 40 45 50 55 60
INPUT VOLTAGE (V)
0.5
-40°C
5
15
25
35
45
0
55
+25°C
-50
-25
0
INPUT VOLTAGE (V)
PGOOD THRESHOLD
vs. TEMPERATURE
95
50
75
100
125
150
TEMPERATURE (°C)
DROPOUT VOLTAGE
vs. LOAD CURRENT
700
toc4
25
toc5
toc6
5.01
600
RISING
91
89
400
300
85°C
200
FALLING
87
85
500
+25°C
100
0
-40
0
OUTPUT VOLTAGE (V)
VDROPOUT (mV)
PGOOD THRESHOLD (%)
5
93
40
80
120
-40°C
0
20
40
IOUT = 0mA
4.99
4.98
IOUT = 1mA
4.97
VIN = 4.5V
60
80
100
4.96
5
OUTPUT CURRENT(mA)
TEMPERATURE (ºC)
35
45
55
LOAD TRANSIENT RESPONSE,
LOAD CURRENT STEPPED
FROM 1mAto 50mA, FIGURE 3 CIRCUIT
toc8
5.02
5.01
OUTPUT VOLTAGE (V)
25
INPUT VOLTAGE (V)
toc7
5.03
15
VOUT(AC)
5
100mV/div
4.99
4.98
4.97
4.96
ILOAD = 1mA
ILOAD = 5mA
4.95
IOUT
4.94
4.93
-40
-15
10
35
60
85
110
50mA/div
200µs/div
TEMPERATURE (°)
www.analog.com
Analog Devices │ 4
MAX17651
4V to 60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
Typical Operating Characteristics (continued)
(VIN = VEN = 7V, VOUT = 5V, COUT = 4.7µF TA= +25°C, unless otherwise noted.)
INPUT-VOLTAGE STEP RESPONSE
WITH 100mALOAD CURRENT,
FIGURE 3 CIRCUIT
LOAD TRANSIENT RESPONSE,
LOAD CURRENT STEPPED
FROM 50mA to 100mA, FIGURE 3 CIRCUIT
toc10
toc9
VOUT (AC)
STARTUP RESPONSE WITH NO LOAD,
FIGURE 3 CIRCUIT
toc11
14V
50mV/div
2V/div
VIN
6V
VOUT
VIN
5V/div
VOUT(AC)
IOUT
5V/div
5V/div
100mV/div PGOOD
50mA/div
200µs/div
200µs/div
40µs/div
STARTUP RESPONSE WITH ENABLE
(NO LOAD), FIGURE 3 CIRCUIT toc13
STARTUP RESPONSE WITH 100mA LOAD
FIGURE 3 CIRCUIT
toc12
5V/div
2V/div
VIN
VOUT
5V/div
EN
2V/div
50mA/div
VOUT
IOUT
5V/div
PGOOD
5V/div
PGOOD
200µs/div
200µs/div
STARTUP RESPONSE WITH ENABLE
AND 100mA LOAD, FIGURE 3 CIRCUIT
POWER SUPPLY REJECTION RATIO,
FIGURE 3 CIRCUIT
toc14
toc15
VOUT
50mA/div
IOUT
5V/div
PSRR (dB)
5V/div
2V/div
EN
VIN = 7V
VOU T = 5V
IOU T = 100mA
PGOOD
200µs/div
www.analog.com
FREQUENCY (HZ)
Analog Devices │ 5
MAX17651
4V to 60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
2
4
6 FB
MAX17651
IN 3
5 PGOOD
4 OUT
TSOT
MAX17651
*EP
+
1
2
3
GND
GND
5
EN
1
6
IN
EN
+
FB
TOP VIEW
PGOOD
TOP VIEW
OUT
Pin Configuration
TDFN
*EXPOSED PAD
Pin Description
PIN
NAME
FUNCTION
TSOT
TDFN
1
2
EN
2
3
GND
3
1
IN
4
6
OUT
5
5
PGOOD
6
4
FB
Output Feedback Connection. Connect FB to a resistor divider between VOUT and GND to adjust
the output voltage from 0.6V to 59V.
–
–
EP
Exposed Pad (TDFN Only). Always connect EP to the GND pin of the IC. Connect EP to a large
GND plane with several thermal vias for best thermal performance. Refer to the MAX17651ATT
EV kit data sheet for an example of the correct method for EP connection and thermal vias.
www.analog.com
Active-High, Enable Input. Force EN high (or connect to IN) to turn the regulator on.
Pull EN to GND to place the device in a low-power shutdown mode.
Ground. Connect GND to the ground plane.
Power-Supply Input. Decouple to GND with a 0.1µF capacitor; place the capacitor close to the
IN and GND pins.
Regulator Output. Connect at least 4.7µF, 0805 capacitor from OUT to GND.
Open-Drain PGOOD Output. Pull up PGOOD to an external power supply. PGOOD pulls low
if FB drops below 89% of its set value. PGOOD goes high after FB rises above 92% of its set
value. The PGOOD pin can be left floating if not used.
Analog Devices │ 6
MAX17651
4V to 60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
Functional Diagram
OUT
THERMAL
PROTECTION
IN
EN
FET DRIVER WITH
CURRENT LIMIT
MAX17651
CONTROL
LOGIC
FB
BANDGAP
REF = 0.6V
PGOOD
GND
Figure 1. Block Diagram
Detailed Description
The MAX17651 ultra-low quiescent current, high-voltage
linear regulator is ideal for use in industrial and batteryoperated systems. The device operates from a 4V to 60V
input voltage, delivers up to 100mA of load current and
consumes only 8μA of quiescent current at no load. The
device consumes only 0.9μA current when in shutdown.
Output voltage is adjustable from 0.6V to 58V voltage range.
Feedback voltage accuracy is ±2% over temperature.
An open-drain, active-low PGOOD pin provides a powergood signal to the system upon achieving successful regulation of the output voltage. The device also incorporates an
enable pin (EN) that allows the user to turn the part on or
off. The device has a thermal shutdown feature that shuts
down the part when the die temperature exceeds 165°C.
The MAX17651 operates over the -40°C to +125°C industrial temperature range and is available in a compact,
6-lead TSOT and a 6-pin (3mm x 3mm) TDFN packages.
EN Input
EN is an active-high, logic-level enable input that turns
the device on or off. Drive EN high to turn the device on.
While in shutdown, the device consumes only 0.9μA (typ).
www.analog.com
EN withstands voltages up to VIN + 0.3V, allowing it to be
driven by high input-level voltages, or be connected to IN
for always-on operation.
Thermal Protection
When the junction temperature exceeds +165°C, an
internal thermal sensor turns the pass transistor off,
allowing the device to cool. The thermal sensor turns the
pass transistor on again after the junction temperature
cools by 15°C. This results in a cycled output during
continuous thermal-overload conditions. Thermal
protection protects the MAX17651 in the event of fault
conditions.
Output Short-Circuit Current Limit
The MAX17651 features a 140mA (typ) current limit. The
output can be shorted to GND for an indefinite period
without damage to the device. During a short-circuit
event, the power dissipated across the internal pass
transistor can quickly heat the device. When the die
temperature reaches +165°C, the MAX17651 shuts down
and automatically restarts once the die temperature cools
by 15°C.
Analog Devices │ 7
MAX17651
4V to 60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
Applications Information
Available Output Current Calculation
Output Voltage Setting
The output voltage can be programmed from 0.6V to 58V.
Set the output voltage by connecting a resistor divider
from output to FB to GND. Choose R2 = 59kΩ, then
calculate R1 with the following equation:
R1 = 98.3 x (VOUT - 0.6)kΩ
Output Capacitor Selection
If the output voltage is less than 1.8V, use a low-ESR
10µF(min) 0805 ceramic output capacitor for good load
transient response. If the output voltage is greater than or
equal to 1.8V, use a low-ESR 4.7µF(min) 0805 ceramic
output capacitor.
At a particular operating condition, the power loss that
leads to the temperature rise of the part is estimated as
follows:
PLOSS = (VIN - VOUT) x ILOAD
where VIN is the input voltage, VOUT is the output voltage,
and ILOAD is the load current.
For a multilayer board, the thermal performance metrics
for the packages are given below:
θJA = 42°C/W for TDFN package
θJA = 110°C/W for TSOT package
The junction temperature of the MAX17651 can be
estimated at any given maximum ambient temperature
(TA_MAX) from the equation below:
TJ = TA_MAX + (θJA x PLOSS)
Junction temperature greater than +125°C degrades
operating lifetimes. Calculate the maximum allowable
output current, using the following formula:
VOUT
R1
FB
ILOAD (MAX) =
R2
(125 − T A _MAX )
θ JA × (VIN − VOUT )
Example: TA_MAX = +70°C, VIN = 24V, VOUT = 5V,
θJA = 42°C/W for TDFN package
GND
=
ILOAD (MAX)
Figure 2. Setting the Output Voltage
(125 − 70)
≅ 69mA
42 × (24 − 5)
Typical Application Circuit
VIN
IN
6.1V TO 60V
CIN
0.1µF
EN
GND
VOUT
OUT
MAX17651
PGOOD
COUT
4.7µF
5V
R1
432kΩ
FB
R2
59kΩ
Figure 3. Application Circuit for 5V output
www.analog.com
Analog Devices │ 8
MAX17651
Chip Information
PROCESS: BiCMOS
4V to 60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
Ordering Information
PIN-PACKAGE
TEMP RANGE
MAX17651AZT+
PART
6 TSOT
-40°C to +125°C
MAX17651AZT+T
6 TSOT
-40°C to +125°C
MAX17651ATT+
6 TDFN-EP*
-40°C to +125°C
MAX17651ATT+T
6 TDFN-EP*
-40°C to +125°C
*EP = Exposed pad.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel
www.analog.com
Analog Devices │ 9
MAX17651
4V to 60V, 100mA, Ultra-Low Quiescent Current,
Linear Regulator
Revision History
REVISION
NUMBER
REVISION
DATE
0
11/14
Initial release
1
3/16
Updated Electrical Characteristics table and Typical Operating Characteristics
section
2
3/17
Updated maximum input voltage range
1–6
3
9/17
Updated title, Electrical Characteristics table, and the Benefits and Features and
Available Output Current Calculation sections. Replaced Note 1 for the Absolute
Maximum Ratings section
1–9
Closed the parentheses for the Typical Operating Characteristics global
characteristics
4–5
3.1
4
12/21
DESCRIPTION
PAGES
CHANGED
—
Added new package (TDFN). Updated General Description, Benefits and
Features, Application Circuit, Absolute Maximum Ratings, Package Information,
Typical Operating Characteristics, Pin Configuration, Pin Description, Detailed
Description, Available Output Current Calculation, Typical Application Circuit, and
Ordering Information.
1–4, 6, 7
1, 2, 4–9
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is
assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that
may result from its use.Specifications subject to change without notice. No license is granted by implicationor
otherwise under any patent or patent rights of Analog Devices. Trademarks andregistered trademarks are the
property of their respective owners.
w w w . a n a l o g . c o m
Analog Devices │ 10
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
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MAX17651AZT+T
Other:
MAX17651ATT+ MAX17651ATT+T
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