MAX8902A datasheet(2/11 Pages) MAXIM

2 / 11 page

Low-Noise 500mA LDO Regulators

in a 2mm x 2mm TDFN Package

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ABSOLUTE MAXIMUM RATINGS

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.

BYP, EN, IN, OUT, SELA, SELB, POK to GND, GS to GND, FB,

OUTS to GND .....................................................-0.3V to +6.0V

Output Short-Circuit Duration.....................................Continuous

Continuous Power Dissipation (TA = +70°C)

8-Pin, 2mm x 2mm TDFN

(derate 11.9mW/°C above +70°C) .............................953.5mW

Operating Temperature Range .........................-40°C to +125°C

Junction Temperature Range ............................-40°C to +150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

(VIN = VEN = 5V, OUTS = OUT, circuit of Figure 2 (MAX8902A) and Figure 3 (MAX8902B), TA = -40°C to +125°C, unless otherwise

noted.) (Note 1)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

1.7

5.5

Input Undervoltage Lockout

VIN rising, 100mV typical hysteresis

1.5

1.6

1.7

OUT

Output Voltage Range

VIN

≥ VOUT + 0.1V

0.6

5.3

Output Voltage Accuracy

VIN = 1.7V to 5.5V for VOUT

≤ 1.4V,

VIN = (VOUT + 0.3V) to 5.5V for VOUT > 1.4V,

IOUT = 0.1mA to 500mA

-1.5

+1.5

Load Regulation

IOUT = 0.1mA to 500mA

0.02

Line Regulation

VIN = 1.7V to 5.5V for VOUT

≤ 1.4V,

VIN = (VOUT + 0.3V) to 5.5V for VOUT > 1.4V,

IOUT = 200mA

0.04

VIN

≥ 3.6V, TA ≤ +85°C

100

VIN

≥ 3.6V, TA ≤ +125°C

120

Dropout Voltage

(Note 2)

IOUT = 500mA

VIN = 1.7V

150

Current Limit

VOUT = 95% of regulation, VIN = VOUT + 0.5V

600

700

800

Output Noise

IOUT = 100mA, f = 10Hz to 100kHz, CBYP = 0.01µF

µVRMS

f = 5kHz

f = 10kHz

Power-Supply Rejection Ratio

IOUT = 10mA

f = 100kHz

OUTS (MAX8902A only)

OUTS Input Bias Current

In regulation

0.5

7.0

µA

FB (MAX8902B only)

FB Threshold Accuracy

VIN = 1.7V to 5.5V, IOUT = 0.1mA to 500mA

0.591

0.600

0.609

TA = +25°C

-0.1

0.02

+0.1

FB Input Bias Current

VFB = 0.6V

TA = -40°C

0.03

µA

BYP

BYP Capacitor Range

Regulator remains stable

100

BYP Startup Current

From BYP to GND during startup

µA

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