Datasheet > ADP3050-EVALZ

ADP3050-EVALZ

更新时间： 2024-11-26 12:31:39

品牌	Logo	应用领域
亚德诺 - ADI		稳压器开关
页数	文件大小	规格书
20页	354K
描述
200 kHz, 1 A High Voltage Step-Down Switching Regulator

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ADP3050-EVALZ 数据手册

200 kHz, 1 A High Voltage

Step-Down Switching Regulator

Data Sheet

ADP3050

FEATURES

FUNCTIONAL BLOCK DIAGRAM

BIAS

Wide input voltage range: 3.6 V to 30 V

Adjustable and fixed (3.3 V, 5 V) output options

Integrated 1 A power switch

Uses small surface-mount components

Cycle-by-cycle current limiting

CURRENT SENSE

AMPLIFIER

2.50V

REGULATOR

GND

Peak input voltage (100 ms): 60 V

Configurable as a buck, buck-boost, and SEPIC

regulator

FREQUENCY

AND CURRENT LIMIT

FOLDBACK

CURRENT

LIMIT

Available in 8-lead SOIC package

Supported by ADIsimPower™ design tool

200kHz

OSCILLATOR

APPLICATIONS

BOOST

CMP

Industrial power systems

PC peripheral power systems

Preregulator for linear regulators

Distributed power systems

Automotive systems

DRIVER

SWITCH

ADP3050

1.2V

Battery chargers

COMP

Figure 1.

GENERAL DESCRIPTION

The ADP3050 is a current mode monolithic buck (step down)

PWM switching regulator that contains a high current 1 A power

switch and all control, logic, and protection functions. It uses a

unique compensation scheme allowing the use of any type of

output capacitor (tantalum, ceramic, electrolytic, OS-CON).

Unlike some buck regulators, the design is not restricted to using

a specific type of output capacitor or ESR value.

The ADP3050 includes a shutdown input that places the device

in a low power mode, reducing the total supply current to under

20 µA. Internal protection features include thermal shutdown

circuitry and a cycle-by-cycle current limit for the power switch

to provide complete device protection under fault conditions.

The ADP3050 provides excellent line and load regulation,

maintaining typically less than 3% output voltage accuracy

over temperature and under all input voltage and output

current conditions.

A special boosted drive stage is used to saturate the NPN power

switch, providing a system efficiency higher than conventional

bipolar buck switchers. Further efficiency improvements are

obtained by using the low voltage regulated output to provide

the internal operating current of the device. A high switching

frequency allows the use of small external surface-mount compo-

nents. A wide variety of standard off-the-shelf devices can be

used, providing a great deal of design flexibility. A complete

regulator design requires only a few external components.

The ADP3050 is specified over the industrial temperature range

of −40°C to +85°C and is available in a thermally enhanced 8-lead

(not Pb-free only) SOIC package and a standard 8-lead (Pb-free

only) RoHS-compliant SOIC package.

Rev. C

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

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与ADP3050-EVALZ相关器件

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ADP3088ARMZ	ADI	获取价格	IC 1.4 A SWITCHING REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PDSO8, MSOP-8, Switching Regula
ADP3089	ADI	获取价格	1 MHz, 1 A Buck Regulator
ADP3089ACP	ADI	获取价格	1 MHz, 1 A Buck Regulator
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