MAX8556

更新时间： 2024-09-30 22:55:11

品牌	Logo	应用领域
美信 - MAXIM		稳压器
页数	文件大小	规格书
11页	229K
描述
4A Ultra-Low-Input-Voltage LDO Regulators

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数据手册

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MAX8556 数据手册

19-3257; Rev 0; 4/04

4 A Ult ra -Lo w -In p u t -Vo lt a g e

LDO Re g u la t o rs

Ge n e ra l De s c rip t io n

Fe a t u re s

The MAX8556/MAX8557 low-dropout linear regulators

operate from input voltages as low as 1.425V and are

able to deliver up to 4A of continuous output current

with a typical dropout voltage of only 100mV. The out-

♦ 1.425V to 3.6V Input Voltage Range

♦ Guaranteed 4A Output Current

♦ ±1% Output Accuracy Over Load/Line/

Temperature

put voltage is adjustable from 0.5V to V - 0.2V.

♦ 100mV Dropout at 4A Load (typ)

♦ Built-In Soft-Start

Designed with an internal p-channel MOSFET pass tran-

sistor, the MAX8556/MAX8557 maintain a low 800µA typi-

cal supply current, independent of the load current and

dropout voltage. Using a p-channel MOSFET eliminates

the need for an additional external supply or a noisy inter-

nal charge pump. Other features include a logic-con-

trolled shutdown mode, built-in soft-start, short-circuit

protection with foldback current limit, and thermal-over-

load protection. The MAX8556 features a POK output that

transitions high when the regulator output is within ±10%

of its nominal output voltage. The MAX8557 offers a

power-on reset output that transitions high 140ms after the

output has achieved 90% of its nominal output voltage.

♦ 800µA (typ) Operating Supply Current

♦ 150µA (max) Shutdown Supply Current

♦ Short-Circuit Current Foldback Protection

♦ Thermal-Overload Protection

♦ ±10% Power-OK (MAX8556)

♦ 140ms Power-On Reset Output (MAX8557)

♦ Fast Transient Response

♦ 16-Pin Thin QFN 5mm x 5mm Package

The MAX8556/MAX8557 are available in a 16-pin thin

QFN 5mm x 5mm package with exposed paddle.

Ord e rin g In fo rm a t io n

Ap p lic a t io n s

Servers and Storage Devices

PIN-

PART

TEMP RANGE

FEATURE

POK

Networking

PACKAGE

16 Thin QFN

5mm X 5mm

16 Thin QFN

5mm X 5mm

Base Stations

Optical Modules

Point-of-Load Supplies

ATE

MAX8556ETE -40°C to +85°C

MAX8557ETE -40°C to +85°C

POR

Typ ic a l Op e ra t in g Circ u it

P in Co n fig u ra t io n

TOP VIEW

OUT

16 15 14 13

0.5V TO V - 0.2V

1.425V TO 3.6V

OUT

12 POK (POR)

11 OUT

MAX8556

(MAX8557)

MAX8556

(MAX8557)

10 OUT

OUT

POK

(POR)

GND

N.C.

THIN QFN

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...11

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与MAX8556相关器件

型号	品牌	获取价格	描述	数据表
MAX8556_09	MAXIM	获取价格	4A Ultra-Low-Input-Voltage LDO Regulators
MAX8556ETE	MAXIM	获取价格	PLASTIC ENCAPSULATED DEVICES
MAX8556ETE/GG8	MAXIM	获取价格	Adjustable Positive LDO Regulator, 0.5V Min, 3.4V Max, 0.2V Dropout, BICMOS, 5 X 5 MM, TQF
MAX8556ETE/GH9	MAXIM	获取价格	Adjustable Positive LDO Regulator, 0.5V Min, 3.4V Max, 0.2V Dropout, BICMOS, 5 X 5 MM, TQF
MAX8556ETE/GH9-T	MAXIM	获取价格	Adjustable Positive LDO Regulator, 0.5V Min, 3.4V Max, 0.2V Dropout, BICMOS, 5 X 5 MM, TQF
MAX8556ETE/V+	MAXIM	获取价格	4A Ultra-Low-Input-Voltage LDO Regulators
MAX8556ETE/V+T	MAXIM	获取价格	Adjustable Positive LDO Regulator, 0.5V Min, 3.4V Max, 0.2V Dropout, BICMOS, 5 X 5 MM, ROH
MAX8556ETE+	MAXIM	获取价格	4A Ultra-Low-Input-Voltage LDO Regulators
MAX8556ETE+T	MAXIM	获取价格	Adjustable Positive LDO Regulator, 0.5V Min, 3.4V Max, 0.2V Dropout, BICMOS, 5 X 5 MM, ROH
MAX8556ETE-T	MAXIM	获取价格	Adjustable Positive LDO Regulator, 0.5V Min, 3.4V Max, 0.2V Dropout, BICMOS, 5 X 5 MM, 0.8

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