MAX15001 Maxim Integrated Products, MAX15001 Datasheet

MAX15001

Manufacturer Part Number

MAX15001

Description

(MAX15000 / MAX15001) Current-Mode PWM Controllers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX15001.pdf (18 pages)

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Bonase Electronics (HK) Co., Limited

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MAX15001AEUB+T

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MAXIM

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The MAX15000/MAX15001 current-mode PWM con-

trollers contain all the control circuitry required for the

design of wide-input-voltage isolated and nonisolated

power supplies. The MAX15000 is well suited for uni-

versal input (rectified 85VAC to 265VAC) or telecom

(-36VDC to -72VDC) power supplies. The MAX15001

is well suited for low input voltage (9.5VDC to 24VDC)

power supplies.

The MAX15000/MAX15001 contain an internal error

amplifier that regulates the tertiary winding output volt-

age which is used in primary-side-regulated isolated

power supplies. Primary-side regulation eliminates the

need for an optocoupler. An input undervoltage lockout

(UVLO) is provided for programming the input-supply

start voltage and to ensure proper operation during

brownout conditions. An open-drain UVLO flag output,

with 210µs internal delay, allows the sequencing of a

secondary-side controller. The input-supply start volt-

age is externally programmable with a voltage-divider.

A UVLO/EN input is used to shutdown the MAX15000/

MAX15001. Internal digital soft-start eliminates output

voltage overshoot.

The MAX15000 has an internal bootstrap UVLO with

large hysteresis that requires a minimum 23.6V for start-

up. The MAX15001 does not have the internal bootstrap

UVLO and can be biased directly from a minimum volt-

age of 9.5V.

The switching frequency for the MAX15000/MAX15001 is

programmable with an external resistor. The MAX15000A/

MAX15001A provide a 50% maximum duty-cycle limit,

while the MAX15000B/MAX15001B provide a 75% maxi-

mum duty-cycle limit. These devices are available in 10-

pin µMAX

-40°C to +85°C temperature range.

19-3957; Rev 0; 1/06

Selector Guide appears at end of data sheet.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

1/2, 1/4, and 1/8th Brick Power Modules

High-Efficiency, Isolated Telecom Power

Supplies

Networking/Servers

Isolated Keep-Alive Power Supplies

12V Boost and SEPIC Regulators

Isolated and Nonisolated High-Brightness LED

Power Supplies

Industrial Power Conversion

packages and are rated for operation over the

________________________________________________________________ Maxim Integrated Products

General Description

Programmable Switching Frequency

Current-Mode PWM Controllers with

Applications

♦ Current-Mode Control

♦ Programmable Switching Frequency Up to 625kHz

♦ Accurate UVLO Threshold (1%)

♦ Open-Drain UVLO Flag Output with Internal Delay

♦ 36V to 72V Telecom Voltage Range

♦ Universal Offline Input Voltage Range

♦ 9.5V to 24V Input (MAX15001)

♦ Digital Soft-Start

♦ Internal Bootstrap UVLO with Large Hysteresis

♦ Internal Error Amplifier with 1.5% Accurate

♦ 50µA (typ) Startup Supply Current

♦ 50% Maximum Duty-Cycle Limit

♦ 75% Maximum Duty-Cycle Limit

♦ 60ns Cycle-by-Cycle Current-Limit Propagation

♦ Available in Tiny 10-Pin µMAX Packages

Warning: The MAX15000/MAX15001 are designed to work with

high voltages. Exercise caution.

+Denotes lead-free package.

MAX15000AEUB+ -40°C to +85°C

MAX15000BEUB+ -40°C to +85°C

MAX15001AEUB+ -40°C to +85°C

MAX15001BEUB+ -40°C to +85°C

(MAX15000)

Reference

(MAX15000A/MAX15001A)

(MAX15000B/MAX15001B)

Delay

TOP VIEW

Rectified 85VAC to 265VAC (MAX15000)

PART

UVLO/EN

COMP

UFLG

TEMP RANGE

Ordering Information

MAX15000

MAX15001

MAX

Pin Configuration

PIN-

PACKAGE

10 µMAX

NDRV

GND

Features

CODE

U10-2

PKG

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