PIN

NAME

FUNCTION

15

COMP

Error-Amplifier Output. Connect an RC network from COMP to GND for stable operation. See the

Compensation Network section for more details.

16

FB

Feedback Input. Connect an external resistive divider from OUT to FB and GND to set the output voltage.

Connect FB to BIAS to set the output voltage to 5V or 3.3V.

17

FOSC

Resistor-Programmable Switching Frequency Setting Control Input. Connect a resistor from FOSC to GND to

set the switching frequency.

MAX20004/MAX20006/

MAX20008

36V, 220kHz to 2.2MHz, 4A/6A/8A

Fully Integrated Automotive

Step-Down Converters

www.maximintegrated.com

Maxim Integrated │ 9

Internal Block Diagram

Pin Description (continued)

SKIP CURRENT

COMP

PEAK CURRENT

COMP

PWM

COMP

CONTROL LOGIC

CURRENT-SENSE

AMP

BST

LX

BIAS

PGND

SUPSW

LX

PGND

ZX

COMP

∑

CLK

FPWM

RAMP

GENERATOR

CLK

SOFT-START

GENERATOR

POK

PGOOD

COMP

ERROR

AMP

FEEDBACK

SELECT

FB

MAIN

CONTROL

LOGIC

VOLTAGE

REFERENCE

OTP

OSC

CLK

FPWM

SYNC

EN

POK

RESET

TRIMBITS

SEL

GND

BIAS LDO

SUP

BIAS

FOSC

GND

COMP

OUT

MAX20004

MAX20006

MAX20008