MAX5097B

更新时间： 2024-11-03 05:00:11

品牌	Logo	应用领域
美信 - MAXIM		转换器
页数	文件大小	规格书
20页	3629K
描述
40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode

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MAX5097B 数据手册

19-0603; Rev 0; 7/06

40V, 600mA Buck Converters with Low-

Quiescent-Current Linear Regulator Mode

General Description

Features

♦ High-Efficiency Switcher Mode (Buck Mode) or

The MAX5096/MAX5097 easy-to-use, Dual Mode™,

DC-DC converters operate as LDO (low dropout) or

switch-mode buck converters. At a high output load,

the converters operate as high-efficiency pulse-width-

modulated (PWM) switch-mode converters and reduce

the power dissipation. The devices switch to a low-qui-

Low-Quiescent-Current Linear Regulator

(LDO Mode) Operation

♦ Wide Operating Input Voltage Range

+5V to +40V Buck Mode

+4V to +40V LDO Mode

♦ Fixed 3.3V or 5V and Adjustable (1.24V to 11V)

escent-current (I ) LDO mode of operation at light load.

Output Voltage Versions

During the key-off condition, the system’s microcon-

troller drives the LDO/BUCK input on the fly and forces

the MAX5096/MAX5097 into LDO Mode, thereby reduc-

ing the quiescent current significantly.

♦ 6µA (typ) Shutdown Current

♦ Fixed 135kHz or 330kHz Switching Frequency

♦ External Frequency Synchronization

♦ Programmable Soft-Start

In Buck Mode, the MAX5096/MAX5097 operate from a 5V

to 40V input voltage range and deliver up to 600mA of

load current with excellent load and line regulation. The

fixed-switching frequency versions of 135kHz and

330kHz are available. The MAX5096/MAX5097 DC-DC

internal oscillator can be synchronized to an external

clock. External compensation and a current-mode control

scheme make it easy to design with.

♦ Integrated Microprocessor Reset (RESET) Circuit

with Programmable Timeout Period

♦ Thermal and Short-Circuit Protection

♦ -40°C to +125°C Automotive Temperature Range

♦ Thermally-Enhanced Package Dissipates

2.6W at T = +70°C (16-Pin TQFN)

1.7W at T = +70°C (20-Pin TSSOP)

Ordering Information

In LDO Mode, the MAX5096/MAX5097 operate from a

4V to 40V input voltage. The LDO Mode operation is

intended for a lower output load current of up to

100mA. The quiescent current at 100µA load in LDO

Mode is only 41µA (typ).

PKG

CODE

PART

TEMP RANGE PIN-PACKAGE

MAX5096AATE+* -40°C to +125°C 16 TQFN-EP** T1655-2

MAX5096BATE+ -40°C to +125°C 16 TQFN-EP** T1655-2

MAX5096AAUP+* -40°C to +125°C 20 TSSOP-EP** U20E-4

MAX5096BAUP+* -40°C to +125°C 20 TSSOP-EP** U20E-4

MAX5097AATE+ -40°C to +125°C 16 TQFN-EP** T1655-2

MAX5097BATE+* -40°C to +125°C 16 TQFN-EP** T1655-2

MAX5097AAUP+* -40°C to +125°C 20 TSSOP-EP** U20E-4

MAX5097BAUP+* -40°C to +125°C 20 TSSOP-EP** U20E-4

The MAX5096/MAX5097 feature an enable input that

shuts down the device, reducing the current consump-

tion to 6µA (typ). Additional features include a power-on

reset output with a capacitor-adjustable timeout period,

programmable soft-start, output tracking, output over-

load, short-circuit and thermal shutdown protections.

The MAX5096/MAX5097 operate over the -40°C to

+125°C automotive temperature range and are avail-

able in thermally enhanced 20-pin TSSOP or 16-pin

TQFN packages.

*Future product—contact factory for availability.

+Denotes lead-free package.

**EP = Exposed pad.

Applications

Pin Configurations

TOP VIEW

Automotive

Industrial

20 LX

19 LX

PGND

SGND

RESET

18 N.C.

17 EN

OUT

PGND

SGND

RESET

MAX5096

MAX5097

MAX5096

MAX5097

16 OUT

15 ADJ

14 N.C.

ADJ

LDO/BUCK

N.C.

SYNC

12 COMP

11 CT

SS 10

Dual Mode is a trademark of Maxim Integrated Products, Inc.

TQFN

TSSOP

________________________________________________________________ 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...20

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与MAX5097B相关器件

型号	品牌	获取价格	描述	数据表
MAX5097BATE/V+T	MAXIM	获取价格	Switching Regulator
MAX5097BATE+	MAXIM	获取价格	40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode
MAX5097BATE+T	MAXIM	获取价格	Switching Regulator, Current-mode, 1.9A, 350kHz Switching Freq-Max, BICMOS, PQCC16, 5 X 5
MAX5097BAUP+	MAXIM	获取价格	40V, 600mA Buck Converters with Low-Quiescent-Current Linear Regulator Mode
MAX5097BAUP+T	MAXIM	获取价格	暂无描述
MAX5098A	MAXIM	获取价格	Dual, 2.2MHz, Automotive Buck or Boost Converter with 80V Load-Dump Protection
MAX5098A	ADI	获取价格	双通道、2.2MHz、汽车buck或boost转换器，具有80V抛负载保护
MAX5098AATJ	MAXIM	获取价格	Dual, 2.2MHz, Automotive Buck or Boost Converter with 80V Load-Dump Protection
MAX5098AATJ+	MAXIM	获取价格	Dual Switching Controller, Voltage-mode, 4.3A, 2200kHz Switching Freq-Max, BICMOS, 5 X 5 M
MAX5099	MAXIM	获取价格	Dual, 2.2MHz, Automotive Synchronous Buck Converter with 80V Load-Dump Protection

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