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Data Sheet

FULL DATA SHEET (PDF, 220kB) Download   E-Mail

Description

The MAX1910/MAX1912 power LEDs with a regulated output voltage or current (up to 120mA) from an unregulated input supply (2.7V to 5.3V). These are complete DC-DC converters requiring only four small ceramic capacitors and no inductors. Input ripple is minimized by a unique regulation scheme that maintains a fixed 750kHz switching frequency over a wide load range. Also included are logic-level shutdown and soft-start to reduce input current surges at startup. The MAX1910 has two automatically selected operating modes: 1.5x and 2x. 1.5x mode improves efficiency at higher input voltages, while 2x mode maintains regulation at lower input voltages. The MAX1912 operates only in 1.5x mode. The MAX1910 and the MAX1912 are available in a space-saving 10-pin µMAX package.

Key Features		Applications/Uses
High-Efficiency 1.5x/2x Charge Pumps Low Input Ripple with 750kHz Operation 200mV Current-Sense Threshold Reduces Power Loss Current- or Voltage-Regulated Charge Pump Up to 120mA Output Current No Inductors Required Small Ceramic Capacitors Regulated ±5% LED Current Load Disconnected in Shutdown 1µA Shutdown Current Small 10-Pin µMAX Package		Backup Battery Boost Converters Cell Phones Digital Still Cameras MP3 Players PDAs White LED Backlighting

Application Notes

Application Note 1037: Charge-Pump and Step-Up DC-DC Converter Solutions for Powering White LEDs in Series or Parallel Connections - MAX1910, MAX1912 Application Note 1804: Driving LEDs in Battery-Operated Applications: Controlling Brightness Power Efficiently - MAX1910, MAX1912 Application Note 3070: Standard and White LED Basics and Operation - MAX1912 Application Note 3256: Why Drive White LEDs with Constant Current? - MAX1910

Evaluation Kits

MAX1910EVKIT

Reliability Reports

Show FIT data for: MAX1910 MAX1912 Request Reliability Report for: MAX1910 MAX1912

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: 1-6 of 6
MAX1910	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1910EUB			uMAX;10 pin; Dwg: 21-0061 (PDF) Use pkgcode/variation: U10-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1910EUB-T			uMAX;10 pin; Dwg: 21-0061 (PDF) Use pkgcode/variation: U10-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1910EUB+			uMAX;10 pin; Dwg: 21-0061 (PDF) Use pkgcode/variation: U10+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1910EUB+T			uMAX;10 pin; Dwg: 21-0061 (PDF) Use pkgcode/variation: U10+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1912	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1912EUB			uMAX;10 pin; Dwg: 21-0061 (PDF) Use pkgcode/variation: U10-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1912EUB-T			uMAX;10 pin; Dwg: 21-0061 (PDF) Use pkgcode/variation: U10-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

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New Product Press Release 2002-02-19

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