Datasheet > ADP1149AN

ADP1149AN

更新时间： 2022-12-01 19:55:42

品牌	Logo	应用领域
亚德诺 - ADI		开关光电二极管
页数	文件大小	规格书
2页	42K
描述
IC SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDIP16, PLASTIC, DIP-16, Switching Regulator or Controller

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ADP1149AN 数据手册

High Efficiency, Synchronous

Step-Down Switching Regulators

ADP1149/1149-3.3/1149-5

FEATURES

P IN CO NFIGURATIO NS

Operation to 48 V Input Voltage

Ultrahigh Efficiency (Up to 95%)

Current Mode Operation for Excellent Line and Load

Transient Response

High Efficiency Maintained Over Wide Current Range

Logic Controlled Micropow er Shutdow n

Short Circuit Protection

Very Low Dropout Operation

Synchronous FET Sw itching for High Efficiency

Adaptive Nonoverlap Gate Drives

16-Lead P lastic D IP

16-Lead P lastic SO

CAP

PGATE

SD2

ADP1149

REG GND

NGATE

PWR GND

ADP1149-

3.3

PDRIVE

ADP1149-

11 SIG GND

TOP VIEW

(Not to Scale)

APPLICATIONS

Notebook and Palm top Com puters

Portable Instrum ents

VFB (SD1)*

SENSE+

SENSE–

Battery Operated Digital Devices

Industrial Pow er Distribution

Avionics System s

*FIXED OUTPUT VERSIONS = SD1

Telecom Pow er Supplies

GENERAL D ESCRIP TIO N

input range converters. Current-mode operation provides

excellent line and load transient response. T he operating cur-

rent level is user programmable via an external current sense

resistor.

T he ADP1149 is a family of synchronous step-down switching

regulator controllers featuring automatic-sleep mode to maintain

high efficiencies at low output currents. T hese devices drive

external complementary power MOSFET s at switching fre-

quencies up to 250 kHz using a constant off-time current-mode

architecture.

T he ADP1149 incorporates automatic power saving sleep

mode operation when load currents drop below the level

required for continuous operation. In sleep mode, standby

power is reduced to only about 8 mW at V_IN= 12 V. In shut-

down, both MOSFET s are turned off.

Special onboard regulation and level-shift circuitry allow opera-

tion at input voltages from dropout to 48 V (60 V absolute

maximum). T he constant off-time architecture maintains con-

stant ripple current in the inductor, easing the design of wide

1N4148

100µF

100V

P-CHANNEL

IRFR9024

CAP

P-GATE

0.068µF

0.047µF

62µH

3.3µF

SENSE**

P-DRIVE

0.05Ω

ADP1149-5

OUT

1N5819

5V/ 2A

SENSE+

SENSE–

SHUTDOWN 1

SHUTDOWN 2

0V = NORMAL

>2V = SHUTDOWN

1000pF

3300pF

OUT

N-CHANNEL

IRFR024

N-DRIVE

220µF

S-GND

P,R-GNDS

1kΩ

470pF

*COILTRONICS CTX62-2-MP

**KRL SL-1-C1-0R050J

Figure 1. Typical Application

This inform ation applies to a product under developm ent. Its characteristics and specifications are subject to change without notice.

Analog Devices assum es no obligation regarding future m anufacture unless otherwise agreed to in writing.

To obtain the m ost recent version or com plete data sheet, call our fax retrieval system at 1-800-446-6212 or visit our World Wide Web site at http://www.analog.com .

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与ADP1149AN相关器件

型号	品牌	描述	获取价格	数据表
ADP1149AN-3.3	ADI	IC SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDIP16, PLASTIC, DIP-16, Switching Re	获取价格
ADP1149AN-5	ADI	IC SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDIP16, PLASTIC, DIP-16, Switching Re	获取价格
ADP1149AR	ADI	IC SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO16, PLASTIC, SO-16, Switching Reg	获取价格
ADP1149AR-3.3	ADI	IC SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO16, PLASTIC, SO-16, Switching Reg	获取价格
ADP1149AR-5	ADI	IC SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO16, PLASTIC, SO-16, Switching Reg	获取价格
ADP1151	PANASONIC	PF压力传感器	获取价格

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