Click here to ask about the production status of specific part numbers.
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
General Description
Benefits and Features
The MAX38903A/B/C/D are a family of low-noise linear
regulators that deliver up to 1A of output current with only
5.5μVRMS of output noise from 10Hz to 100kHz.
● Delivers Flexible Operating Range
• 1.7V to 5.5V Input Voltage Range
• 0.6V to 5.0V Programmable Output Voltage
• 1A Maximum Output Current
• 100mV Maximum Dropout at 1A Load
• < 1μA Shutdown Supply Current
These regulators maintain ±1% output accuracy over a
wide input voltage range, requiring only 100mV of input-tooutput headroom at full load. The 1200μA no-load supply
current is independent of dropout voltage.
The MAX38903A has nine pin-selectable output voltages
1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V.
The MAX38903B/C output voltage can be adjusted to a
value in the range of 0.6V to 5.0V using two external resistors.
The MAX38903B also includes an active-high POK signal
for trouble-free load startup.
The MAX38903D has factory-preset output voltages over
the range of 0.7V to 5V in 50mV steps. All versions include
a programmable output soft-start rate, output over-current
and thermal overload protection.
The MAX38903A/B are offered in a 10-pin, 3mm x 3mm
TDFN package, while the MAX38903C/D are offered in a
9-bump, 0.4mm pitch, 1.4mm x 1.4mm wafer-level package (WLP).
Applications
● Communication Systems, Test Equipment, Medical
Equipment
● High-End Audio Systems
● High-Resolution Data Acquisition Systems
19-100370; Rev 5; 4/20
● Reduces Noise and Improves Accuracy
• ±1% DC Accuracy Over Load, Line, and
Temperature
• 5.5μVRMS Output Noise, 10Hz to 100kHz
• 1200μA Operating Supply Current
• 70dB PSRR at 10kHz
● Enables Ease-of-Use and Robust Protection
• Stable with 4μF(min) Output Capacitance
• Programmable Soft-Start Rate
• Overcurrent and Overtemperature Protection
• Output-to-Input Reverse Current Protection
• Power-OK Output
● Reduces Size, Improves Reliability
• 3mm x 3mm, 10-pin TDFN Package and 1.4mm x
1.4mm, 3 x 3 Bump, 0.4mm Pitch WLP
• -40°C to 125°C Operating Temperature
Ordering Information appears at end of data sheet.
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Typical Operating Circuits
VIN
(1.7V TO 5.5V)
CIN
10uF
IN
OUT
IN
OUT
GND
ENABLE
VOUT SELECT:
TO GND,
IN OR FLOAT
MAX38903A
TDFN
VOUT
(1.5V/1A)
CBYP
10nF
COUT
10uF
BYP
OUTS
EN
SELA
HI-Z
SELB
VIN
(1.7V TO 5.5V)
CIN
10uF
EP
IN
OUT
IN
OUT
GND
MAX38903B
TDFN
EN
ENABLE
VOUT ADJUSTABLE
(0.6V TO 5.0V)
CBYP
10nF
COUT
10uF
R3
100k
BYP
Reset
POK
R1
GS
EP
FB
R2
VIN
(1.7V TO 5.5V)
CIN
10uF
IN
OUT
IN
OUT
MAX38903C
GND
WLP
VOUT ADJUSTABLE
(0.6V TO 5.0V)
COUT
10uF
CBYP
10nF
BYP
R1
ENABLE
EN
FB
R2
VIN
(1.7V TO 5.5V)
CIN
10uF
IN
OUT
IN
OUT
MAX38903D-XX
GND
ENABLE
www.maximintegrated.com
EN
WLP
VOUT PRE-PROGRAMMED
(0.7V TO 5.0V)
CBYP
10nF
COUT
10uF
BYP
OUTS
Maxim Integrated | 2
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Absolute Maximum Ratings
IN, EN, POK, RSEL, BYP to GND............................ -0.3V to +6V
FB, OUT, OUTS, SELA, SELB to GND .................... -0.3V to +6V
Output Short-Circuit Duration ..................................... Continuous
Continuous Power Dissipation (TA = +70°C)
TDFN (derate 24.4mW/°C above 70°C) ..................... 1951mW
WLP (derate 11.9mW/°C above 70°C) ......................... 952mW
Operating Temperature Range ...........................-40°C to +125°C
Maximum Junction Temperature ...................................... +150°C
Storage Temperature Range ..............................-65°C to +150°C
Lead Temperature (Soldering, 10 seconds) .....................+300°C
Soldering Temperature (reflow) ........................................ +260ºC
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
TDFN
Package Code
T1033+1C
Outline Number
21-0137
Land Pattern Number
90-0003
THERMAL RESISTANCE, SINGLE-LAYER BOARD
Junction to Ambient (θJA)
54°C/W
Junction to Case (θJC)
9°C/W
THERMAL RESISTANCE, FOUR-LAYER BOARD
Junction to Ambient (θJA)
41°C/W
Junction to Case (θJC)
9°C/W
WLP
Package Code
N91D1+1
Outline Number
21-100257
Land Pattern Number
Refer to Application Note 1891
THERMAL RESISTANCE, FOUR-LAYER BOARD
Junction to Ambient (θJA)
83.98°C/W
Junction to Case (θJC)
N/A
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.
Electrical Characteristics
(VIN = 3.6V, TJ = -40°C to +125°C, CBYP = 0.047μF, CIN = 10μF, COUT = 10μF, IOUT = 100mA, unless otherwise specified. Note 1.)
PARAMETER
Input Voltage Range
Input Undervoltage
Lockout
www.maximintegrated.com
SYMBOL
VIN
VIN_UVLO
CONDITIONS
MIN
Guaranteed by output accuracy
1.7
VIN rising, 100mV hysteresis
1.5
TYP
1.6
MAX
UNITS
5.5
V
1.7
V
Maxim Integrated | 3
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Electrical Characteristics (continued)
(VIN = 3.6V, TJ = -40°C to +125°C, CBYP = 0.047μF, CIN = 10μF, COUT = 10μF, IOUT = 100mA, unless otherwise specified. Note 1.)
PARAMETER
SYMBOL
CONDITIONS
Output Voltage Range
VOUT
VIN > VOUT + 0.1V
Output Capacitance
COUT
For stability and proper operation
IQ
Supply Current
ISHUTDOWN
MIN
0.6
4
IOUT = 0mA
VEN = 0V
TYP
MAX
5.0
10
1200
2000
0.01
0.1
TJ = +125°C
0.1
Output Accuracy
(MAX38903A/D Only)
ACC38903A/D
Output Accuracy
(MAX38903B/C Only)
ACC38903B/C
IOUT from 0.1mA to 1A, VIN from VOUT +
0.3V to 5.5V, VIN > 1.7V, VOUT from 0.6V
to 5.0V
-1.0
0.594
0.6
V
µF
TJ = +25°C
IOUT from 0.1mA to 1A, VIN from VOUT +
0.3V to 5.5V, VIN > 1.7V, VOUT from 0.7V
to 5.0V
UNITS
µA
μA
+1.0
%
0.606
V
Load Regulation
IOUT from 0.1mA to 1A
0.02
%
Load Transient
IOUT = 50mA to 1A to 50mA, tRISE =
tFALL = 1µs
50
mV
Line Regulation
VIN from VOUT + 0.3V to 5.5V, VIN >
1.7V
0.05
%
Line Transient
VIN = 4V to 5V to 4V, IOUT = 1A, tRISE =
tFALL = 5µs
3
mV
Dropout Voltage (Note
2)
IOUT = 1A
VIN = 3.6V TDFN
48
100
VIN = 3.6V WLP
32
100
VIN = 2.5V TDFN
57
160
VIN = 2.5V WLP
42
VIN = 1.7V TDFN
85
300
68
300
1.4
1.6
VIN = 1.7V WLP
Current Limit
VOUT = 95% of regulation
Output Noise
IOUT = 100mA,
f = 10Hz to 100kHz
1.15
CBYP = 47nF
5.5
f = 1kHz
70
f = 10kHz
70
f = 100kHz
60
Power Supply Rejection
Ratio
PSRR
IOUT = 100mA
BYP Capacitor Range
CBYP
Regulator remains stable
f = 1MHz
BYP Soft-Start Current
µVRMS
dB
0.1
50
EN Input Threshold
VIN from 1.7V to
5.5V
EN rising
EN falling
0.4
0.7
EN Input Leakage
Current
VEN from 1.7V to
5.5V
TJ = +25°C
-1
0.001
POK Threshold
(MAX38903B Only)
VOUT when POK
switches
VOUT rising
POK Voltage, Low
(MAX38903B Only)
IPOK = 1mA
www.maximintegrated.com
A
40
0.001
From BYP to GND during startup
0.8
TJ = +125°C
VOUT falling
mV
µA
1.2
+1
0.01
88
91
94
88
10
µF
100
V
µA
%
mV
Maxim Integrated | 4
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Electrical Characteristics (continued)
(VIN = 3.6V, TJ = -40°C to +125°C, CBYP = 0.047μF, CIN = 10μF, COUT = 10μF, IOUT = 100mA, unless otherwise specified. Note 1.)
PARAMETER
SYMBOL
POK Leakage Current
(MAX38903B Only)
CONDITIONS
VPOK = 5.5V
SELA/B Input
Resistance
(MAX38903A Only)
RINSELA/B
SELA/B Input
Capacitance
(MAX38903A Only)
CINSELA/B
TJ = +25°C
MIN
TYP
MAX
-0.1
+0.001
+0.1
TJ = +125°C
0.01
When shorted to GND or IN
When Hi-Z
500
1
UNITS
µA
Ω
MΩ
When Hi-Z
10
Input Reverse Current
Threshold
VOUT = 3.6V, when VIN falls to 0V
400
Thermal Shutdown
Threshold
TJ when output
turns
on/off
TJ rising
165
TJ falling
150
pF
mA
°C
Note 1: Limits over the specified operating temperature and supply voltage range are guaranteed by design and characterization, and
production tested at room temperature only.
Note 2: Dropout voltage is defined as (VIN - VOUT) when VOUT is 95% of its nominal value.
www.maximintegrated.com
Maxim Integrated | 5
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Typical Operating Characteristics
(MAX38903A, VIN = 3.6V, VOUT = 2.5V, TA = 25°C, CIN = 10μF , COUT = 10μF, unless otherwise noted.)
www.maximintegrated.com
Maxim Integrated | 6
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Typical Operating Characteristics (continued)
(MAX38903A, VIN = 3.6V, VOUT = 2.5V, TA = 25°C, CIN = 10μF , COUT = 10μF, unless otherwise noted.)
www.maximintegrated.com
Maxim Integrated | 7
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Pin Configurations
MAX38903A
TOP VIEW (PAD-SIDE DOWN)
IN
1
10
OUT
IN
2
9
OUT
EXPOSED
PAD
GND
3
8
BYP
EN
4
7
OUTS
SELA
5
6
SELB
10-PIN TDFN 3mm x 3mm
FIGURE 1. MAX38903A PIN CONFIGURATION
www.maximintegrated.com
Maxim Integrated | 8
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
MAX38903B
TOP VIEW (PAD-SIDE DOWN)
IN
1
10
OUT
IN
2
9
OUT
EXPOSED
PAD
GND
3
8
BYP
EN
4
7
FB
GS
5
6
POK
10-PIN TDFN 3mm x 3mm
FIGURE 2. MAX38903B PIN CONFIGURATION
www.maximintegrated.com
Maxim Integrated | 9
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
MAX38903C
TOP VIEW (BUMP-SIDE DOWN)
BYP
OUT
OUT
C
FB
GND
GND
B
EN
IN
IN
A
3
2
1
9-BUMP WLP 0.4mm PITCH (1.4mm x 1.4mm)
FIGURE 3.. MAX38903C PIN CONFIGURATION
MAX38903D
TOP VIEW (BUMP-SIDE DOWN)
BYP
OUT
OUT
C
OUTS
GND
GND
B
EN
IN
IN
A
3
2
1
9-BUMP WLP 0.4mm PITCH (1.4mm x 1.4mm)
FIGURE 4. MAX38903D PIN CONFIGURATION
www.maximintegrated.com
Maxim Integrated | 10
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Pin Description
PIN
NAME
MAX38903A
MAX38903B
MAX38903C
MAX38903D
1, 2
1, 2
A1, A2
A1, A2
IN
3
3
B1, B2
B1, B2
GND
FUNCTION
Regulator Supply Input. Connect to a voltage
between 1.7V and 5.5V and bypass with a 10μF
capacitor from IN to GND.
Regulator Ground. Bring IN and OUT bypass
capacitor GND connections to this pin for best
performance.
4
4
A3
A3
EN
Enable Input. Connect this pin to a logic signal to
enable (VEN high) or disable (VEN low) the
regulator output. Connect to IN to keep the output
enabled whenever a valid supply voltage is
present.
5
-
-
-
SELA
Select Input A. Connect to GND, IN, or leave
unconnected to select the output voltage. This pin
is read only at startup
-
5
-
-
GS
6
-
-
-
SELB
Select Input B. Connect to GND, IN, or leave
unconnected to select the output voltage. This pin
is read only at startup
Ground Sense. Connect GS to GND.
-
6
-
-
POK
Active-High Power-OK Output. Connect a pullup
resistor from this pin to a supply to create a reset
signal that goes high after the regulator output
has reached its regulation voltage.
7
-
-
B3
OUTS
Output Voltage Sense Input. Connect to the load
at a point where accurate regulation is required to
eliminate resistive metal drops.
-
7
B3
-
FB
Feedback Divider Input. Connect a resistor
divider string from OUT to GND with the midpoint
tied to this pin to set the output voltage. In the
Typical Operating Circuits, VOUT = 0.6V x (1 +
R3/R2).
8
8
C3
C3
BYP
Bypass Capacitor Input. Connect a 0.001μF to
0.1μF capacitor between OUT and BYP to reduce
output noise and set the regulator soft-start rate.
9, 10
9, 10
C1, C2
C1, C2
OUT
Regulator Output. Sources up to 1A at the output
regulation voltage. Bypass with a 10μF (4μF
minimum, including voltage derating) low ESR (<
0.03Ω) capacitor to GND.
EP
EP
—
—
EP
Exposed Pad (TDFN Only). Connect the exposed
pad to a ground plane with low thermal resistance
to ambient to provide best heatsinking.
www.maximintegrated.com
Maxim Integrated | 11
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Simplified Functional Diagram
EN
IN
CURRENT
LIMIT
THERMAL
PROTECTION
REVERSE
CURRENT
PROTECTION
CONTROL
OUT
BYP
BYP
REF
0.6V
MAX38903B
ONLY
EA
MAX38903A
MAX38903B
MAX38903C
MAX38903D
POK
0.54V
MAX38903B/C
ONLY
FB
OUTS
MAX38903A ONLY
MAX38903A/D
ONLY
SELA
VOLTAGE
SELECT
SELB
www.maximintegrated.com
GND
Maxim Integrated | 12
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Detailed Description
The MAX38903A/B/C/D low noise linear regulators deliver up to 1A of output current with only 5.5µVRMS of output noise
in a 10Hz to100kHz bandwidth. These regulators maintain their output voltage over a wide input range, requiring only
100mV of input-to-output headroom at full load.
The MAX38903A/B/C/D maintains a low 1200µA (typ) supply current, independent of the load current and dropout
voltage. The regulator control circuitry includes a programmable soft-start circuit, short-circuit, reverse input current, and
thermal overload protection. Other features include an enable input and power-ok (POK) output (MAX38903B only). See
Simplified Functional Diagram.
Enable (EN)
The MAX38903A/B/C/D include an enable input (EN). Pull EN low to shut down the output, or drive EN high to enable
the output. If a separate shutdown signal is not available, connect EN to IN.
Bypass (BYP)
The capacitor connected from BYP to OUT filters the noise of the reference, feedback resistors and regulator input stage,
and provides a high-speed feedback path for improved transient response. A 0.01µF capacitor rolls-off input noise at
around 32Hz.
The slew rate of the output voltage during startup is also determined by the BYP capacitor. A 0.01µF capacitor sets the
slew rate to 5V/ms. This startup rate results in a 50mA slew current drawn from the input at start-up to charge the 10µF
output capacitance.
The BYP capacitor value can be adjusted from 0.001µF to 0.1µF to change the startup slew rate according to the
following formula:
Startup Slew Rate = (5V/ms) x (0.01µF/CBYP)
where CBYP is in µF.
Note that this slew rate applies only at startup. Recovery from a short-circuit will occur at a slew rate approximately 500
times slower.
Also note that, being a low-frequency filter node, BYP is sensitive to leakage. BYP leakage currents above 10nA cause
measurable inaccuracy at the output and should be avoided.
Protection Features
The MAX38903A/B/C/D are fully protected from an output short-circuit by a current-limiting and thermal overload circuit.
If the output is shorted to GND, the output current is limited to 1.4A (typ). Under these conditions, the part quickly heats
up. When the junction temperature reaches 165°C, a thermal limit circuit shuts off the output device. When the junction
cools to 150°C, the output turns back on in an attempt to reestablish regulation. While the fault persists, the output current
cycles on and off as the junction temperature slews between 150°C and 165°C.
The MAX38903A/B/C/D are also protected against reverse current when the output voltage is higher than the input. In
the event that extra output capacitance is used at the output, a power-down transient at the input would normally cause
a large reverse current through a conventional regulator. The MAX38903A/B/C/D include a reverse voltage detector
that trips when IN drops 10mV below OUT, shutting off the regulator and opening the pMOS body diode connection,
preventing any reverse current.
Output Voltage Configuration (MAX38903A)
The MAX38903A output can be set to one of nine voltages by shorting or opening the SELA and SELB inputs, as shown
in Table 1. SELA and SELB should be connected to GND, IN, or left unconnected. Alternatively, they may be driven high,
low, or open with external logic. However, the states of SELA and SELB are sampled only at startup. The regulation
voltage can be set to a different level by cycling EN or IN momentarily to GND.
www.maximintegrated.com
Maxim Integrated | 13
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Table 1. MAX38903A Output Configuration
VOUT (V)
SELA STATE
SELB STATE
1.2
Unconnected
IN
1.5
IN
Unconnected
1.8
Unconnected
GND
2.5
Unconnected
Unconnected
3.0
GND
GND
3.1
GND
IN
3.3
GND
Unconnected
4.0
IN
GND
5.0
IN
IN
Output Voltage Configuration (MAX38903B/C)
The MAX38903B and MAX38903C use external feedback resistors to set the output regulation voltage, as shown in the
Typical Operating Circuits. The output can be set
from 0.6V to 5.0V. Set the lower feedback resistor R2 to 300kΩ or less to minimize FB input bias current error. Then
calculate the value of the upper feedback resistor R1, as follows:
VOUT
R1 = R2 × ( V
− 1)
FB
where VFB is the feedback regulation voltage of 0.6V. To set the output voltage to 2.5V, for example, R1 should be:
2.5V
R1 = 300kΩ × ( 0.6V − 1) = 950kΩ
Output Voltage Configuration (MAX38903D)
The MAX38903D output voltage comes pre-programmed to values listed below. Additionally, any voltage between 0.7V
and 5.0V in 50mV steps can be factory trimmed and special ordered.
Power-OK (MAX38903B)
The MAX38903B includes an additional open-drain output (POK) that goes high to indicate the output voltage is in
regulation. Connect a pullup resistor from this pin to an external supply. During startup, POK stays low until the output
voltage rises to 91%(typ) of its regulation level. If an overload occurs at the output, or the output is shutdown, POK goes
low.
Input Capacitor
A 10μF ceramic capacitor is recommended for the input. Select a capacitor that does not degrade significantly over
temperature and DC bias. Capacitors with X5R or X7R temperature characteristics generally perform well.
Output Capacitor
A minimum of 4μF capacitance is required at OUT to ensure stability. Select a ceramic capacitor that maintains its
capacitance (4μF minimum) over temperature and DC bias. Capacitors with X5R or X7R temperature characteristics
generally perform well.
Thermal Considerations
The MAX38903A/B is packaged in an 10-pin 3mm x 3mm TDFN package with an exposed paddle. The exposed paddle
is the main path for heat to leave the IC, and therefore must be connected to a ground plane with thermal vias to allow
heat to dissipate from the device. Thermal properties of the IC package are given in the Package Information section.
www.maximintegrated.com
Maxim Integrated | 14
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Table 2. MAX38903D Output Voltage
PART NUMBER
VOUT (V)
MAX38903D-07
0.7
MAX38903D-08
0.8
MAX38903D-10
1.0
MAX38903D-12
1.2
MAX38903D-15
1.5
MAX38903D-18
1.8
MAX38903D-20
2.0
MAX38903D-25
2.5
MAX38903D-27
2.7
MAX38903D-30
3.0
MAX38903D-33
3.3
MAX38903D-46
4.6
MAX38903D-50
5.0
MAX38903D
*
*For other preprogrammed voltage selections, contact a Maxim Integrated representative.
www.maximintegrated.com
Maxim Integrated | 15
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Ordering Information
PART NUMBER
TEMP RANGE
PIN-PACKAGE
MAX38903AATB+
-40°C to
+125°C
FEATURES
10-pin TDFN 3mm x 3mm
9 Selectable Output Voltage, Enable, Reset Output
MAX38903BATB+
-40°C to
+125°C
10-pin TDFN 3mm x 3mm
Resistor Configurable Output Voltage, Enable, Reset
Output
MAX38903CANL+
-40°C to
+125°C
9-bumps WLP 0.4mm
pitch
Resistor Configurable Output Voltage, Enable
MAX38903DANL_
_+ψ
-40°C to
+125°C
9-bumps WLP 0.4mm
pitch
Factory-Trimmed Option from 0.7V to 5.0V in 50mV Steps
MAX38903DANL27+
-40°C to
+125°C
9-bumps WLP 0.4mm
pitch
Factory Programmed to 2.7V
+Denotes a lead(Pb)-free/RoHS-compliant package.
ψ See Table 2 for voltage options.
www.maximintegrated.com
Maxim Integrated | 16
MAX38903A/MAX38903B/
MAX38903C/MAX38903D
1.7V–5.5VIN, 1A Low Noise LDO Linear
Regulators in TDFN and WLP
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
0
6/18
Initial release
1
10/18
Updated Front Page, Typical Operating Circuits, Electrical Characteristics, and
Ordering Information table
2
1/19
Updated Package Information, Table 2, and Ordering Information
3, 11, 12
3
5/19
Updated Electrical Characteristics globals, Typical Operating Characteristics,
and
Ordering Information
4–6, 12
4
11/19
Updated Ordering Information
5
4/20
Updated Typical Operating Characteristics
DESCRIPTION
—
1–6, 11, 12
12
1, 4, 6, 10
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.
© 2020 Maxim Integrated Products, Inc.
工商网监
湘ICP备2023018690号
