ADP1614 データシートの表示（PDF） - Analog Devices

部品番号

コンポーネント説明

一致するリスト

ADP1614

650 kHz/1.3 MHz, 4 A, Step-Up, PWM, DC-to-DC Switching Converter

Analog Devices 

Data Sheet

FEATURES

Adjustable current limit, up to 4 A

2.5 V to 5.5 V input voltage range

650 kHz or 1.3 MHz fixed frequency option

Adjustable output voltage, up to 20 V

Adjustable soft start

Undervoltage lockout

Thermal shutdown

3 mm × 3 mm, 10-lead LFCSP

Supported by ADIsimPower design tool

APPLICATIONS

TFT LCD bias supplies

Portable applications

Industrial/instrumentation equipment

650 kHz/1.3 MHz, 4 A, Step-Up,

PWM, DC-to-DC Switching Converter

ADP1614

TYPICAL APPLICATIONS CIRCUIT

L1

VIN

ADP1614

8 VIN

SW 6

ON

OFF

3 EN

CIN

SW 7

FB 2

9 CLRES

RCL CSS

10 SS

COMP 1

GND GND EP

4

5 11

D1

VOUT

R1

R2

RCOMP

CCOMP

COUT

Figure 1. Step-Up Regulator Configuration

GENERAL DESCRIPTION

The ADP1614 is a step-up, dc-to-dc switching converter with

an integrated power switch capable of providing an output

voltage as high as 20 V. The ADP1614 is available with a pin-

adjustable current limit that is set via an external resistor. The

boost switching frequency is fixed to either 650 kHz or 1.3 MHz.

With a package height of 0.8 mm, the ADP1614 is optimal for

space constrained applications, such as portable devices or thin

film transistor (TFT) liquid crystal displays (LCDs).

The ADP1614 operates in current-mode pulse-width modulation

(PWM) with up to 94% efficiency. Adjustable soft start prevents

inrush currents when the part is enabled. The PWM current-mode

architecture allows excellent transient response, easy noise filtering,

and the use of small, cost-saving external inductors and capacitors.

Other key features include undervoltage lockout (UVLO), thermal

shutdown (TSD), and logic controlled enable.

The ADP1614 is available in a Pb-free, 10-lead lead frame chip

scale package (LFCSP).

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

©2012 Analog Devices, Inc. All rights reserved.

Share Link: