MAX8902B データシートの表示（PDF） - Maxim Integrated

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MAX8902B

Low-Noise 500mA LDO Regulators in a 2mm x 2mm TDFN Package

Maxim Integrated 

MAX8902A/MAX8902B

Low-Noise 500mA LDO Regulators

in a 2mm x 2mm TDFN Package

THERMAL

PROTECTION

EN

CONTROL

CURRENT

LIMIT

BYP

BYP

MAX8902A

MAX8902B

EA

0.54V

MAX8902A ONLY

SELA

SELB

VOLTAGE

SELECT

IN

REVERSE

CURRENT

PROTECTION

OUT

GND

REF

0.6V

POK

MAX8902B ONLY

990kΩ

FB

OUTS

Figure 1. Simplified Functional Diagram

Bypass (BYP)

The capacitor connected from BYP to OUT filters the

noise of the reference, feedback resistors, and regula-

tor input stage and provides a high-speed feedback

path for improved transient response. A 0.01µF capaci-

tor rolls off input noise at approximately 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

startup to charge the 10µF output capacitance.

6

Maxim Integrated

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