MAX5951

更新时间： 2024-10-14 04:41:51

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
25页	395K
描述
12V/5V Input Buck PWM Controller

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数据手册

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MAX5951 数据手册

19-0546; Rev 0; 5/06

12V/5V Input Buck PWM Controller

General Description

Features

The MAX5951 is a 12V pulse-width modulated (PWM),

step-down, DC-DC controller. The device operates over

the input-voltage range of 8V to 16V or 5V 1ꢀ0, and

provides an adjustable output from ꢀ.8V to 5.5V. The

device delivers up to 1ꢀA of load current with excellent

load-and-line regulation.

♦ 8V to 16V or 5V 1ꢀ0 ꢁInptꢂVoꢃtꢄag ꢅꢄIag

♦ Lossꢃgss VꢄꢃꢃgyꢂModg CprrgIt SgIsiIa

♦ Optnpt Voꢃtꢄag Adjpstꢄbꢃg from ꢀ.8V to 5.5V

♦ VoꢃtꢄagꢂModg CoItroꢃ

♦ ExtgrIꢄꢃ ComngIsꢄtioI for Mꢄximpm Fꢃgxibiꢃity

♦ Diaitꢄꢃ SoftꢂStꢄrt

The MAX5951 PWM section utilizes a voltage-mode

control scheme for good noise immunity and offers

external compensation, allowing for maximum flexibility

with a wide selection of inductor values and capacitor

types. The device operates at a fixed switching fre-

quency that is programmable from 1ꢀꢀkHz to 1MHz

and can be synchronized to an external clock signal

though the SYNCIN input. The device includes under-

voltage lockout (UVLO) and digital soft-start. Protection

features include lossless valley-mode current limit, hic-

cup-mode output short-circuit protection, and thermal

shutdown.

♦ SgqpgIciIa or ꢅꢄtiomgtric TrꢄckiIa

♦ Stꢄrtpn SyIchroIizꢄtioI

♦ Proarꢄmmꢄbꢃg PGOOD Optnpt

♦ Proarꢄmmꢄbꢃg SwitchiIa FrgqpgIcy from 1ꢀꢀkHz

to 1MHz

♦ ExtgrIꢄꢃ FrgqpgIcy SyIchroIizꢄtioI

♦ SYNCꢁN ꢄId SYNCOUT EIꢄbꢃg 18ꢀ° OptꢂofꢂPhꢄsg

OngrꢄtioI

♦ Thgrmꢄꢃ ShptdowI ꢄId ShortꢂCircpit ProtgctioI

♦ SnꢄcgꢂSꢄviIa, 5mm x 5mm, 32ꢂPiI TQFN Pꢄckꢄag

The MAX5951 is available in a space-saving 5mm x

5mm, 32-pin thin QFN package and is specified for

operation over the -4ꢀ°C to +85°C extended tempera-

ture range. Refer to the MAX595ꢀ data sheet for a pin-

compatible PWM controller with hot swap.

Ordering Information

PꢁNꢂ

PACKAGE

PKG

CODE

PAꢅT

TEMP ꢅANGE

MAX5951ETJ+

-4ꢀ°C to +85°C 32 TQFN

T3255-4

Applications

+Denotes lead-free package.

PCI-e Express Modules™

General 12V or 5V Input PWM Controllers

Blade Servers

Pin Configuration

TOP VIEW

RAID

Base Stations

24 23 22 21 20 19 18 17

CS-

SYNCIN

Workstations

SYNCOUT

PGND 26

14 AGND

DREG

THRESH

DCENI

MAX5951

11 N.C.

N.C.

BST

REG

PCI-e Express Modules is a trademark of PCI-SIG.

TQFN

(5mm x 5mm)

________________________________________________________________ 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...25

中文翻译

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与MAX5951相关器件

型号	品牌	获取价格	描述	数据表
MAX5951ETJ	MAXIM	获取价格	12V/5V Input Buck PWM Controller
MAX5951ETJ+	MAXIM	获取价格	Switching Controller, Voltage-mode, 2A, 1000kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.80
MAX5951ETJ+T	MAXIM	获取价格	Switching Controller, Voltage-mode, 2A, 1000kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.80
MAX5951ETJ-T	MAXIM	获取价格	Switching Controller, Voltage-mode, 2A, 1000kHz Switching Freq-Max, BICMOS, 5 X 5 MM, 0.80
MAX5952	MAXIM	获取价格	High-Power, Quad, PSE Controller for Power-Over-Ethernet
MAX5952_10	MAXIM	获取价格	High-Power, Quad, PSE Controller for Power-Over-Ethernet
MAX5952AEAX+	MAXIM	获取价格	High-Power, Quad, PSE Controller for Power-Over-Ethernet
MAX5952AEAX+T	MAXIM	获取价格	暂无描述
MAX5952AUAX+	MAXIM	获取价格	High-Power, Quad, PSE Controller for Power-Over-Ethernet
MAX5952AUAX+T	MAXIM	获取价格	Power Management Circuit, BICMOS, PDSO36

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