ADP1621ARMZ-R7(RevB) 查看數據表（PDF） - Analog Devices

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ADP1621ARMZ-R7
(Rev.:RevB)

Constant-Frequency, Current-Mode Step-Up DC/DC Controller

Analog Devices 

ADP1621

SIMPLIFIED BLOCK DIAGRAM

VREF

1.215V

FB

COMP

VOSC

1.4V

FREQ

+

CS +

n

PGND

GND

ERROR

AMPLIFIER

SOFT START

(2048 CYCLES)

gm

PIN

5.5V

SET

OSC

SLOPE

COMP

S

R

PWM

COMPARATOR

GATE

DRIVER

GATE

UVLO

100kΩ

IN

SDSN

5.5V

ADP1621

Figure 3. ADP1621 Simplified Block Diagram

Data Sheet

Rev. B | Page 6 of 32

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