Datasheet > MAX1573

MAX1573

更新时间： 2023-12-20 18:45:48

品牌	Logo	应用领域
亚德诺 - ADI		泵
页数	文件大小	规格书
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描述
白光LED、1倍/1.5倍电荷泵，UCSP封装和薄型QFN封装

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中文翻译

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数据手册

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MAX1573 数据手册

19-2847; Rev 2; 8/05

White LED 1x/1.5x Charge Pump in

UCSP and Thin QFN

General Description

Features

The MAX1573 fractional charge pump drives up to four

white LEDs with regulated constant current for uniform

intensity. By utilizing proprietary adaptive 1x/1.5x

modes and ultra-low-dropout current regulators, it

maintains the highest possible efficiency over the full

1-cell Li+ battery input voltage range. The 1MHz fixed-

frequency switching allows for tiny external compo-

nents and the regulation scheme is optimized to ensure

low EMI and low input ripple.

♦ Proprietary Adaptive 1x/1.5x Modes

♦ High Efficiency (P /P ), Up to 92%

LEDs BATT

♦ 0.2% LED Current Matching

♦ 28mA/LED Drive Capability

♦ Low Input Ripple and EMI

♦ Eliminates Ballast Resistors

♦ Logic or PWM Dimming Control

♦ Low 0.1µA Shutdown Current

♦ 2.7V to 5.5V Input Voltage Range

♦ Soft-Start Limits Inrush Current

♦ Output Overvoltage Protection

♦ Thermal Shutdown Protection

An external resistor sets the full-scale LED current, while

two digital inputs control on/off and select amongst three

levels of brightness. A pulse-width modulation (PWM)

signal can also be used to modulate LED brightness,

requiring no additional components.

The MAX1573 is available in the tiny chip-scale UCSP™

(4 x 4 grid) and 16-pin thin QFN packages.

♦ No External Schottky Diode Required

♦ Tiny UCSP (2.1mm x 2.1mm x 0.6mm) and Thin

QFN (4mm x 4mm) Packages

Applications

Cell Phones, Smart Phones

PDAs, Digital Cameras, Camcorders

MP3 Players

Ordering Information

PART

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

14 UCSP (4 x 4)

16 Thin QFN

MAX1573EBE-T

MAX1573ETE

MAX1573ETE+

Other Handhelds with Color Displays

16 Thin QFN

+ Denotes lead-free package.

Typical Operating Circuit

Pin Configurations

TOP VIEW

1μF

OUT

C1N C1P C2N C2P

CIN

LED1

LED2

SET

UP TO 4 LEDS

2.7V TO 5.5V

OUT

1μF

MAX1573

ON/OFF

AND

DIMMING

CONTROL

MAX1573

C2N

C1P

LED1

LED2

LED3

EN1

EN2

LED4

SET

GND

SET

THIN QFN

4mm × 4mm

A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.

Pin Configurations continued at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...9

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与MAX1573相关器件

型号	品牌	获取价格	描述	数据表
MAX1573EBE	ROCHESTER	获取价格	LED DISPLAY DRIVER, PBGA14, 2.10 X 2.10 MM, 0.60 MM HEIGHT, UCSP-16/14
MAX1573EBE+T	MAXIM	获取价格	LED Driver, 4-Segment, BICMOS, PBGA14, 2.10 X 2.10 MM, 0.60 MM HEIGHT, UCSP-16/14
MAX1573EBE-T	MAXIM	获取价格	LED Driver, 4-Segment, BICMOS, PBGA14, 2.10 X 2.10 MM, 0.60 MM HEIGHT, UCSP-16/14
MAX1573EBE-T	ROCHESTER	获取价格	LED DISPLAY DRIVER, PBGA14, 2.10 X 2.10 MM, 0.60 MM HEIGHT, UCSP-16/14
MAX1573ETE	ROCHESTER	获取价格	LED DISPLAY DRIVER, QCC16, 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGC, TQFN-16
MAX1573ETE	MAXIM	获取价格	LED Driver, 4-Segment, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGC, TQFN-16
MAX1573ETE+	MAXIM	获取价格	LED Driver, 4-Segment, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WGGC, TQFN-16
MAX1573ETE+T	MAXIM	获取价格	LED Driver, 4-Segment, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, MO-220WGGC, TQFN-
MAX1573ETE-T	MAXIM	获取价格	LED Driver, 4-Segment, BICMOS, 4 X 4 MM, 0.80 MM HEIGHT, MO-220WGGC, TQFN-16
MAX1573EVKIT	MAXIM	获取价格	MAX1573 Evaluation Kit

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