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MAX1961

更新时间： 2024-11-26 21:55:11

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
29页	453K
描述
2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining

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MAX1961 数据手册

19-2740; Rev 0; 1/03

2.35V to 5.5V, 0.5% Accurate, 1MHz PWM

Step-Down Controllers with Voltage Margining

General Description

Features

The MAX1960/MAX1961/MAX1962 high-current, high-

efficiency voltage-mode step-down DC-DC controllers

operate from a 2.35V to 5.5V input and generate output

voltages down to 0.8V at up to 20A. An on-chip charge

pump generates a regulated 5V for MOSFET drive.

Additionally, adaptive dead-time drivers allow a

wide variety of MOSFETs to be used without risking

shoot-through.

o 0.5% Accurate Output

o Operates from 2.35V to 5.5V Supply

o Generates Low Output Voltage Down to 0.8V

o On-Chip Charge Pump Provides 5V Gate Drive

o Ceramic or Electrolytic Capacitors

o 94% Efficiency

o External Synchronization from 450kHz to 1.2MHz

o 500kHz/1MHz Fixed-Frequency PWM Operation

o Fast Transient Response

Fixed-frequency PWM operation and external synchro-

nization make these controllers suitable for telecom

and datacom applications. The operating frequency is

programmable to either 500kHz or 1MHz, or from

450kHz to 1.2MHz with an external clock. A clock output

is provided to synchronize another converter for 180°

out-of-phase operation. A high closed-loop bandwidth

provides excellent transient response for applications

with dynamic loads.

o Two Converters Can Operate 180° Out-of-Phase

4% Voltage Margining for System Test

o 10% Accurate Current Sensing (MAX1962)

o Adaptive Dead Time Prevents Shoot-Through

Lossless current sensing in the MAX1960 and

MAX1961 is achieved by monitoring the drain-to-source

voltage of the low-side external FET. The current limit is

scalable to accommodate a wide variety of MOSFETs

and load currents. The MAX1962 has 10% accurate

sense-resistor-based current limiting.

Ordering Information

PART

MAX1960EEP

MAX1961EEP

MAX1962EEP

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

20 QSOP

The MAX1960 and MAX1962 have an adjustable output

voltage from 0.8V to 4.95V. The MAX1961 and

MAX1962 have four preset output voltages (1.5V, 1.8V,

2.5V, and 3.3V) and feature 0.5% voltage accuracy

over temperature, line, and load variations. The

MAX1960 and MAX1961 also feature voltage-margining

control inputs that shift the output voltage up or down

by 4% for system testing.

Typical Operating Circuit

C+

C-

INPUT

2.35V TO 5.5V

MAX1960

CTL1

VOLTAGE

MARGINING

AND ON/OFF

BST

Applications

ASIC, FPGA, DSP, and CPU Core and I/O Voltages

CTL2

COMP

OUTPUT

UP TO 20A

0.8 TO 0.87 ✕ V

Cellular Base Stations

REF

Telecom and Network Equipment

Server and Storage Systems

GND

PGND

ILIM

FSET/SYNC

CLKOUT

OPTIONAL

SYNCHRONIZATION

CLKOUT

180° OUT-OF-PHASE

Pin Configurations and Selector Guide appear at the end

of the data sheet.

________________________________________________________________ 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...29

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与MAX1961相关器件

型号	品牌	获取价格	描述	数据表
MAX1961EEP	MAXIM	获取价格	2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining
MAX1961EEP+	MAXIM	获取价格	Switching Controller, Voltage-mode, 1120kHz Switching Freq-Max, BICMOS, PDSO20, QSOP-20
MAX1961EEP+T	MAXIM	获取价格	Switching Controller, Voltage-mode, 1120kHz Switching Freq-Max, BICMOS, PDSO20, 0.150 INCH
MAX1961EEP-T	MAXIM	获取价格	暂无描述
MAX1962	MAXIM	获取价格	2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining
MAX1962	ADI	获取价格	2.35V至5.5V、0.5%精度、1MHz PWM降压型控制器，带有电压裕量控制
MAX1962EEP	MAXIM	获取价格	2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining
MAX1962EEP+	MAXIM	获取价格	Switching Regulator/Controller, Voltage-mode, 1200kHz Switching Freq-Max, BICMOS, PDSO20,
MAX1962EEP+T	MAXIM	获取价格	Switching Controller, Voltage-mode, 1120kHz Switching Freq-Max, BICMOS, PDSO20, 0.150 INCH
MAX1962EEP-T	MAXIM	获取价格	Switching Controller, Voltage-mode, 1120kHz Switching Freq-Max, BICMOS, PDSO20, QSOP-20

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