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Data Sheet

FULL DATA SHEET (PDF, 968kB) Download   E-Mail

Description

The MAX5080/MAX5081 are 250kHz PWM step-down DC-DC converters with an on-chip, 0.3 high-side switch. The input voltage range is 4.5V to 40V for the MAX5080 and 7.5V to 40V for the MAX5081. The output is adjustable from 1.23V to 32V and can deliver up to 1A of load current. Both devices utilize a voltage-mode control scheme for good noise immunity in the high-voltage switching environment and offer external compensation allowing for maximum flexibility with a wide selection of inductor values and capacitor types. The switching frequency is internally fixed at 250kHz and can be synchronized to an external clock signal through the SYNC input. Light load efficiency is improved by automatically switching to a pulse-skip mode. All devices include programmable undervoltage lockout and soft-start. Protection features include cycle-by-cycle current limit, hiccup-mode output short-circuit protection, and thermal shutdown. Both devices are available in a space-saving, high-power (2.7W), 16-pin TQFN package and are rated for operation over the -40°C to +125°C temperature range.

Key Features		Applications/Uses
4.5V to 40V (MAX5080) or 7.5V to 40V (MAX5081) Input Voltage Range 1A Output Current VOUT Range From 1.23V to 32V Internal High-Side Switch Fixed 250kHz Internal Oscillator Automatic Switchover to Pulse-Skip Mode at Light Loads External Frequency Synchronization Thermal Shutdown and Short-Circuit Protection Operates Over the -40°C to +125°C Temperature Range Space-Saving (5mm x 5mm) High-Power 16-Pin TQFN Package		Automotive Distributed Power FireWire® Power Supplies Industrial

Diagram

Typical Operating Circuit

Evaluation Kits

MAX5080EVKIT

Reliability Reports

Show FIT data for: MAX5080 MAX5081 Request Reliability Report for: MAX5080 MAX5081

Software/Models

none

Ordering Information
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. More: SeeFull Data Sheet or Part 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.
Devices: 1-8 of 8
MAX5080	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5080ATE			TQFN;16 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0072 (PDF) Use pkgcode/variation: T1655-2*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX5080ATE-T			TQFN;16 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0072 (PDF) Use pkgcode/variation: T1655-2*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX5080ATE+			TQFN;16 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0072 (PDF) Use pkgcode/variation: T1655+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5080ATE+T			TQFN;16 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0072 (PDF) Use pkgcode/variation: T1655+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5081	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5081ATE			TQFN;16 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0072 (PDF) Use pkgcode/variation: T1655-2*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX5081ATE-T			TQFN;16 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0072 (PDF) Use pkgcode/variation: T1655-2*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX5081ATE+			TQFN;16 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0072 (PDF) Use pkgcode/variation: T1655+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5081ATE+T			TQFN;16 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0072 (PDF) Use pkgcode/variation: T1655+2*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

New Product Press Release 2005-05-26

Related Products

MAX5082, MAX5083 1.5A, 40V, MAXPower Step-Down DC-DC Converters

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