MAX5035AASASLASHV+ datasheet(9/17 Pages) MAXIM

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1A, 76V, High-Efficiency MAXPower

Step-Down DC-DC Converter

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Pin Description

NAME

FUNCTION

BST

Boost Capacitor Connection. Connect a 0.1µF ceramic capacitor from BST to LX.

Internal Regulator Output. Bypass VD to GND with a 0.1µF ceramic capacitor.

SGND

Internal Connection. SGND must be connected to GND.

4FB

Output Sense Feedback Connection. For fixed output voltage (MAX5035A, MAX5035B, MAX5035C),

connect FB to VOUT. For adjustable output voltage (MAX5035D), use an external resistive voltage-divider to

set VOUT. VFB regulating set point is 1.22V.

ON/OFF

Shutdown Control Input. Pull ON/OFF low to put the device in shutdown mode. Drive ON/OFF high for

normal operation.

GND

Ground

7VIN

Input Voltage. Bypass VIN to GND with a low ESR capacitor as close to the device as possible.

Source Connection of Internal High-Side Switch

ENABLE

BST

VIN

ON/OFF

VREF

REGULATOR

(FOR DRIVER)

REGULATOR

(FOR ANALOG)

OSC

RAMP

HIGH-SIDE

CURRENT

SENSE

IREF-PFM

IREF-LIM

CPFM

1.69V

CILIM

VREF

EAMP

CONTROL

LOGIC

CPWM

GND

CLK

SGND

MAX5035

TYPE 3

COMPENSATION

THERMAL

SHUTDOWN

RAMP

Block Diagram

MAX5035AASA/V+ Datasheet(PDF) 9 Page - Maxim Integrated Products

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