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MAX797 Datasheet PDF

Part Series:MAX797 Series
Category:DC-DC Converters
Description:Conv DC-DC Single Step Down 4.5V to 40V 16Pin SOIC N
Document:MAX797ESE Datasheet PDF (33 Pages)

MAX797 DC-DC Converters Datasheet PDF

MAX797 Datasheet PDF DC-DC Converters

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* 96% Efficiency * 4.5V to 30V Input Range * 2.5V to 6V Adjustable Output * Preset 3.3V and 5V Outputs (at up to 10A) * Multiple Regulated Outputs * +5V Linear-Regulator Output * Precision 2.505V Reference Output * Automatic Bootstrap Circuit * 150kHz/300kHz Fixed-Frequency PWM Operation * Programmable Soft-Start * 375μA Typ Quiescent Current (VIN = 12V, VOUT = 5V) * 1μA Typ Shutdown Current
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MAX797HESE+ - Maxim Integrated Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Frequency
300 kHz
Number of Pins
16 Pin
Supply Voltage (DC)
4.50V (min)
Case/Package
SOIC-16
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MAX797HESE+ - Maxim Integrated Function Overview

The MAX797HESE+ is a high voltage, step-down controller with synchronous rectifier for CPU power in 16 pin NSOIC package. A 40V rating on the power stage"s input allows operation with high-cell-count batteries and a wide range of AC adaptors. This buck controller achieves 96% efficiency by using synchronous rectification and Idle Mode control scheme to extend battery life at full-load (up to 10A) and no-load outputs. Excellent dynamic response corrects output transients caused by latest dynamic-clock CPUs within five 300KHz clock cycles. Unique bootstrap circuitry drives inexpensive N-channel MOSFETs, reducing system cost and eliminating the crowbar switching currents found in some PMOS/NMOS switch designs. It has a logic controlled and synchronized fixed-frequency, pulse width modulating (PWM) operating mode which reduces noise and RF interference in sensitive mobile-communications and pen-entry applications. It is used in notebook and subnotebook computers.
Supply voltage range is 4.5V to 30V
Operating temperature range from -40°C to 85°C
Up to 40V power input
2.5V to 6V adjustable output
Preset 3.3V and 5V outputs (at up to 10A)
5V linear regulator output
Precision 2.505V reference output
Automatic bootstrap circuit, programmable soft start
Quiescent current (VIN = 12V, VOUT = 5V) is 375µA
Shutdown current is 1µA
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