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MAX767, MAX767R, MAX767S, MAX767T

5V to 3.3V Output, Synchronous, Step-Down Power Supply Controller

High Precision ±2.5% Supply for Single or Dual Pentium® Systems

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

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 device 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, 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 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.

Data Sheet

Download	Rev 3	(PDF, 1.4MB)
E-Mail

An evaluation kit is available: MAX767EVKIT

Key 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™)

Applications/Uses

Local 5V-to-3.3V DC-DC Conversion
Microprocessor Daughterboards
Power Supplies Up to 10A or More

Key Specifications:

Step-Down Switching Regulators

Part Number

V_IN
(V)

V_OUT
(V)

Preset V_OUT
(V)

Max. I_OUT
(A)

Output Adjust. Method

DC-DC Outputs

Oper. Freq.
(kHz)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

min

max

min

max

≤

max w/pins

See Notes

MAX767

4.5

5.5

3.3

3.6

3.3

3.45

3.6

Preset

Resistor

350

SSOP/20

57.9

$3.88 @1k

See All Step-Down Switching Regulators (288)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Typical Application Circuit

Product Guides

Wireless (PDF)

Reliability Reports

Reliability Report:	MAX767.pdf
Show FIT data for:
Request Reliability Report for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX767CAP			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX767CAP+			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX767CAP+T			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX767CAP-T			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX767EAP			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX767EAP+			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX767EAP+T			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX767EAP-T			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX767RCAP			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX767RCAP-T			Active	SSOP;20 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX767REAP			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX767REAP+			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX767REAP+T			Active	SSOP;20 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX767REAP-T			Active	SSOP;20 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX767SCAP			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX767SCAP-T			Active	SSOP;20 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX767SEAP			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX767SEAP+			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX767SEAP+T			Active	SSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX767SEAP-T			Active	SSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX767TCAP			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX767TCAP-T			Active	SSOP;20 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX767TEAP			Active	SSOP;20 pin;57.9 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0094 (PDF) Use pkgcode/variation: A20-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX767TEAP-T			Active	SSOP;20 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX767TEVKIT-SO			Active	KIT; Land Pattern: Not Available		See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Notes and Comments

Dedicated 5V-to-3.3V, high efficiency, small size

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Evaluation Kits

MAX767EVKIT

Evaluation Kit for the MAX767

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