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MAX15001

Maxim Integrated Products
Part Number MAX15001
Manufacturer Maxim Integrated Products
Description Current-Mode PWM Controllers
Published Dec 25, 2006
Detailed Description www.DataSheet4U.com 19-3957; Rev 0; 1/06 Current-Mode PWM Controllers with Programmable Switching Frequency General De...
Datasheet PDF File MAX15001 PDF File

MAX15001
MAX15001

Overview
www.
DataSheet4U.
com 19-3957; Rev 0; 1/06 Current-Mode PWM Controllers with Programmable Switching Frequency General Description The MAX15000/MAX15001 current-mode PWM controllers contain all the control circuitry required for the design of wide-input-voltage isolated and nonisolated power supplies.
The MAX15000 is well suited for universal 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 voltage 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 voltage 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 startup.
The MAX15001 does not have the internal bootstrap UVLO and can be biased directly from a minimum voltage 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% maximum duty-cycle limit.
These devices are available in 10pin µMAX® packages and are rated for operation over the -40°C to +85°C temperature range.
♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ Features 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 Vo...


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