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MAX1761EEE

更新时间： 2024-09-23 22:57:59

品牌	Logo	应用领域
美信 - MAXIM		电脑控制器
页数	文件大小	规格书
23页	472K
描述
Small, Dual, High-Efficiency Buck Controller for Notebooks

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MAX1761EEE 数据手册

19-1835; Rev 0; 10/00

Small, Dual, High-Efficiency

Buck Controller for Notebooks

General Description

Features

The MAX1761 dual pulse-width-modulation (PWM),

step-down controller provides high efficiency, excellent

transient response, and high DC output accuracy in an

extremely compact circuit topology. These features are

essential for stepping down high-voltage batteries to

generate low-voltage CPU core, I/O, and chipset RAM

supplies in PC board area critical applications, such as

notebook computers and smart phones.

o Free-Running On-Demand PWM

o Selectable Light-Load Pulse-Skipping Operation

o ±±1 ꢀotal Dꢁ ꢂrror in Forced-PWM Mode

o 5V to 20V Input Range

o Flexible Output Voltages

OUꢀ±: Dual Mode™ Fixed 2.5V or ±V to 5.5V

Adjustable

Maxim’s proprietary Quick-PWM™ quick-response,

constant-on-time PWM control scheme handles wide

input/output voltage ratios with ease and provides

“instant-on” response to load transients while maintain-

ing a relatively constant switching frequency.

OUꢀ2: Dual Mode Fixed ±.8V or ±V to 5.5V

Adjustable

o Output Undervoltage Protection

o ꢁomplementary Synchronous Buck

o No ꢁurrent-Sense Resistor

The MAX1761 achieves high efficiency at reduced cost

by eliminating the current-sense resistor found in tradi-

tional current-mode PWMs. Efficiency is further

enhanced by its ability to drive large synchronous-recti-

fier MOSFETs. The MAX1761 employs a complemen-

tary MOSFET output stage, which reduces component

count by eliminating external bootstrap capacitors and

diodes.

o 4.65V at 25mA Linear Regulator Output

o 4µA V+ Shutdown Supply ꢁurrent

o 5µA VL Shutdown Supply ꢁurrent

o 950µA Quiescent Supply ꢁurrent

o ꢀiny ±6-Pin QSOP Package

Single-stage buck conversion allows this device to

directly step down high-voltage batteries for the highest

possible efficiency. Alternatively, two-stage conversion

(stepping down the +5V system supply instead of the

battery) at a higher switching frequency allows the mini-

mum possible physical size.

The MAX1761 is intended for CPU core, chipset,

DRAM, or other low-voltage supplies. The MAX1761 is

available in a 16-pin QSOP package. For applications

requiring greater output power, refer to the MAX1715

data sheet. For a single-output version, refer to the

MAX1762/MAX1791 data sheet.

Ordering Information

PART

TEMP. RANGE

PIN-PACKAGE

MAX1761EEE

-40°C to +85°C

16 QSOP

Pin Configuration

________________________Applications

Notebooks and PDAs

TOP VIEW

Digital Cameras

FB1

OUT1

REF

16 DH1

15 CS1

14 DL1

Handy-Terminals

Smart Phones

1.8V/2.5V Logic and I/O Supplies

ON2

V+

MAX1761

13 VL

12 GND

11 DL2

10 CS2

ON1

OUT2

FB2

DH2

Quick-PWM and Dual Mode are trademarks of

Maxim Integrated Products.

QSOP

________________________________________________________________ Maxim Integrated Products

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...23

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MAX1761EEE 替代型号

型号	品牌	替代类型	描述	数据表
MAX1761EEE-T	MAXIM	完全替代	Switching Controller, Current-mode, 428kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.025 I
MAX1761EEE+T	MAXIM	类似代替	Switching Controller, Current-mode, 428kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.025 I
MAX1761EEE+	MAXIM	类似代替	Switching Controller, Current-mode, 428kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.025 I

与MAX1761EEE相关器件

型号	品牌	获取价格	描述	数据表
MAX1761EEE+	MAXIM	获取价格	Switching Controller, Current-mode, 428kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.025 I
MAX1761EEE+T	MAXIM	获取价格	Switching Controller, Current-mode, 428kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.025 I
MAX1761EEE-T	MAXIM	获取价格	Switching Controller, Current-mode, 428kHz Switching Freq-Max, PDSO16, 0.150 INCH, 0.025 I
MAX1761EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1761
MAX1762	MAXIM	获取价格	High-Efficiency, 10-Pin レMAX, Step-Down Contr
MAX17620	ADI	获取价格	4MHz、微型、600mA、同步降压型DC-DC转换器，带有集成MOSFET
MAX17620ATA+T	MAXIM	获取价格	Switching Regulator, Current-mode, 1.8A, 4160kHz Switching Freq-Max, CMOS, PDSO8, 2 X 2 MM
MAX17623	MAXIM	获取价格	2.9V to 5.5V,1A, Synchronous Step-Down Converter with Integrated MOSFETs
MAX17623	ADI	获取价格	集成了MOSFET的2.9V至5.5V、1A、同步降压转换器
MAX17623ATA	MAXIM	获取价格	2.9V to 5.5V,1A, Synchronous Step-Down Converter with Integrated MOSFETs

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