Maxim > Products > Power and Battery Management > MAX1674, MAX1675, MAX1676

MAX1674, MAX1675, MAX1676

High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters

Compact, Low-Cost, Low-Noise Design: Inductor Damping Switch Eliminates Ringing, Improves EMI

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX1674/MAX1675/MAX1676 compact, high-efficiency, step-up DC-DC converters fit in small µMAX packages. They feature a built-in synchronous rectifier, which improves efficiency and reduces size and cost by eliminating the need for an external Schottky diode. Quiescent supply current is only 16µA.

The input voltage ranges from 0.7V to V_OUT, where V_OUT can be set from 2V to 5.5V. Start-up is guaranteed from 1.1V inputs. The MAX1674/MAX1675/MAX1676 have a preset, pin-selectable output for 5V or 3.3V. The outputs can also be adjusted to other voltages using two external resistors.

All three devices have a 0.3Ω N-channel MOSFET power switch. The MAX1674 has a 1A current limit. The MAX1675 has a 0.5A current limit, which permits the use of a smaller inductor. The MAX1676 comes in a 10-pin µMAX package and features an adjustable current limit and circuitry to reduce inductor ringing.

Data Sheet

Download	Rev 3	(PDF, 536kB)
E-Mail

An evaluation kit is available: MAX1676EVKIT

Key Features

94% Efficient at 200mA Output Current
16µA Quiescent Supply Current
Internal Synchronous Rectifier (no external diode)
0.1µA Logic-Controlled Shutdown
LBI/LBO Low-Battery Detector
Selectable Current Limit for Reduced Ripple
Low-Noise, Anti-Ringing Feature (MAX1676)
8-Pin and 10-Pin µMAX Packages
Preassembled Evaluation Kit (MAX1676EVKIT)

Applications/Uses

1- to 3-Cell Handheld Devices
Handheld Computers
Medical Devices
Pagers
PDAs
RF Tags
Wireless Phones

Key Specifications:

Step-Up Switching Regulators

Part Number

V_IN
(V)

V_OUT
(V)

Preset V_OUT
(V)

Max. I_OUT
(A)

Output Adjust. Method

DC-DC Outputs

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

min

max

min

max

≥

≤

max w/pins

See Notes

MAX1674

0.7

5.5

3.3

0.3

Preset

Resistor

16.2

MAX1675

16.2

MAX1676

15.4

See All Step-Up Switching Regulators (91)

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 Operating Circuit

Notes and Comments

MAX1674 has 1A current limit. MAX1675 has 0.5A current limit. MAX1676 has adjustable current limit. Low quiescent current

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-1360 Rev 3; 2000-03-01
This page last modified: 2007-06-01