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ANALOG DEVICES MAX797HESE+

DC/DC Controller, Synchronous Buck (Step Down), 4.5 V to 30 V, 1 Output, 340 kHz, NSOIC-16

ANALOG DEVICES MAX797HESE+

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Manufacturer Part No:
MAX797HESE+
Order Code:
2514131
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Technical Datasheet:
MAX797HESE+   Datasheet
ECAD / MCAD
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Product 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

Applications

Power Management, Industrial, Portable Devices

Footnotes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party

Product Information

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:
Current Mode Control

:
4.5V

:
30V

:
1Outputs

:
96%

:
NSOIC

:
16Pins

:
340kHz

:
Synchronous Buck (Step Down)

:
-40°C

:
85°C

:
-

:
-

:
MSL 1 - Unlimited

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Technical Documents (1)

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¥3,268.24 ( ¥3,595.06  Inc. JCT)

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