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MAX767

Features: >90% Efficiency 700µA Quiescent Supply Current 120µA Standby Supply Current 4.5V-to-5.5V Input Range Low-Cost Application Circuit All N-Channel Switches Small External Components Tiny Shrink-Small-Outline Package (SSOP) Predesigned Applications: Standard 5V to 3.3V DC-DC...

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SeekIC No. : 004412151 Detail

MAX767: Features: >90% Efficiency 700µA Quiescent Supply Current 120µA Standby Supply Current 4.5V-to-5.5V Input Range Low-Cost Application Circuit All N-Channel Switches Small External Comp...

MAX767 Data Sheet

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Part Number:
MAX767
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

>90% Efficiency
700µA Quiescent Supply Current
120µA Standby Supply Current
4.5V-to-5.5V Input Range
Low-Cost Application Circuit
All N-Channel Switches
Small External Components
Tiny Shrink-Small-Outline Package (SSOP)
Predesigned Applications: 
       Standard 5V to 3.3V DC-DC Converters up to 10A
       High-Accuracy Pentium P54C VR-Spec Supply
Fixed Output Voltages Available: 
       3.3V (Standard)
       3.45V (High-Speed Pentium™)
       3.6V (PowerPC™)


Application

Local 5V-to-3.3V DC-DC Conversion

Microprocessor Daughterboards

Power Supplies up to 10A or More


Pinout

Connection Diagram


Specifications

VCC to GND...............................................................-0.3V, +7V
PGND to GND......................................................................±2V
BST to GND..............................................................-0.3V, +15V
LX to BST...................................................................-7V, +0.3V
Inputs/Outputs to GND
    (ON, REF, SYNC, CS, FB, SS).........................-0.3V, VCC+ 0.3V
DL toPGND.......................................................-0.3V, VCC+ 0.3V
DH to LX..........................................................-0.3V, BST + 0.3V
REF Short to GND......................................................Momentary
REF Current.......................................................................20mA
Continuous Power Dissipation (TA +70°C)
   20-Pin SSOP (derate 8.00mW/°C above +70°C).......640mW
Operating Temperature Ranges:
   MAX767CAP/MAX767_CAP................................0°C to +70°C
   MAX767EAP/MAX767_EAP.............................-40°C to +85°C
Lead Temperature (soldering, 10sec)............................+300°C 


Description

The MAX767 is a high-efficiency, synchronous buck controller IC dedicated to converting a fixed 5V supply into a tightly regulated 3.3V output. Two key features set this MAX767 apart from similar, low-voltage step-down switching regulators: high operating frequency and all N-channel construction in the application circuit. The 300kHz operating frequency results in very small, low-cost external surface-mount components.

The inductor MAX767, at 3.3µH for 5A, is physically at least five times smaller than inductors found in competing solutions. All N-channel construction and synchronous rectification result in reduced cost and highest efficiency. Efficiency of MAX767 exceeds 90% over a wide range of loading, eliminating the need for heatsinking. Output capacitance requirements are low, reducing board space and cost.

The MAX767 is a monolithic BiCMOS IC available in 20-pin SSOP packages. For other fixed output voltages and package options, please consult the factory.




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