Datasheet > ADP5071AREZ

ADP5071AREZ

更新时间： 2024-11-27 00:57:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
28页	1002K
描述
Independent Positive and Negative Outputs

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ADP5071AREZ 数据手册

2 A/1.2 A DC-to-DC Switching Regulator with

Independent Positive and Negative Outputs

Data Sheet

ADP5071

FEATURES

TYPICAL APPLICATION CIRCUIT

Wide input supply voltage range: 2.85 V to 15 V

Generates well regulated, independently resistor

programmable V_POSand V_NEGoutputs

Boost regulator to generate V_POSoutput

Adjustable positive output to 39 V

ADP5071

INBK

COMP1

POS

SW1

FB1

EN1

VREG

FT1

VREG

Integrated 2.0 A main switch

OUT1

FB1

Optional single-ended primary-inductor converter

(SEPIC) configuration for automatic step-up/step-down

Inverting regulator to generate V_NEGoutput

Adjustable negative output to V_IN− 39 V

Integrated 1.2 A main switch

True shutdown for both positive and negative outputs

1.2 MHz/2.4 MHz switching frequency with optional external

frequency synchronization from 1.0 MHz to 2.6 MHz

Resistor programmable soft start timer

PVIN1

PVIN2

PVINSYS

PGND

VREF

IN1

VREF

EN2

FB2

OUT2

FB2

COMP2

FT2

SYNC/FREQ

SLEW

SW2

NEG

SEQ

AGND

Slew rate control for lower system noise

Individual precision enable and flexible start-up sequence

control for symmetric start, V_POSfirst, or V_NEGfirst

Out-of-phase operation

Figure 1.

UVLO, OCP, OVP, and TSD protection

4 mm × 4 mm, 20-lead LFCSP and 20-lead TSSOP

−40°C to +125°C junction temperature range

Supported by the ADIsimPower tool set

APPLICATIONS

Bipolar amplifiers, ADCs, DACs, and multiplexers

Charge-coupled device (CCD) bias supply

Optical module supply

RF power amplifier (PA) bias

GENERAL DESCRIPTION

The ADP5071 is a dual high performance dc-to-dc regulator that

generates independently regulated positive and negative rails.

The ADP5071 includes a fixed internal or resistor programmable

soft start timer to prevent inrush current at power-up. During

shutdown, both regulators completely disconnect the loads from

the input supply to provide a true shutdown.

The input voltage range of 2.85 V to 15 V supports a wide variety of

applications. The integrated main switch in both regulators enables

generation of an adjustable positive output voltage up to +39 V

and a negative output voltage down to −39 V below input voltage.

Other key safety features in the ADP5071 include overcurrent

protection (OCP), overvoltage protection (OVP), thermal

shutdown (TSD), and input undervoltage lockout (UVLO).

The ADP5071 operates at a pin selected 1.2 MHz/2.4 MHz

switching frequency. The ADP5071 can synchronize with an

external oscillator from 1.0 MHz to 2.6 MHz to ease noise

filtering in sensitive applications. Both regulators implement

programmable slew rate control circuitry for the MOSFET

driver stage to reduce electromagnetic interference (EMI).

The ADP5071 is available in a 20-lead LFCSP or in a 20-lead

TSSOP and is rated for a −40°C to +125°C junction temperature

range.

Table 1. Family Models

Model

Boost Switch (A)

Inverter Switch (A)

Flexible start-up sequencing is provided with the options of

manual enable, simultaneous mode, positive supply first, and

negative supply first.

ADP5070

ADP5071

1.0

2.0

0.6

1.2

Rev. A

Document Feedback

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

rightsof third parties that may result fromits 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 andregisteredtrademarks 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

Technical Support

www.analog.com

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ADP5071AREZ 替代型号

型号	品牌	替代类型	描述	数据表
ADP5071AREZ-R7	ADI	类似代替	Independent Positive and Negative Outputs

与ADP5071AREZ相关器件

型号	品牌	获取价格	描述	数据表
ADP5071AREZ-R7	ADI	获取价格	Independent Positive and Negative Outputs
ADP5071CP-EVALZ	ADI	获取价格	Independent Positive and Negative Outputs
ADP5071RE-EVALZ	ADI	获取价格	Independent Positive and Negative Outputs
ADP5072	ADI	获取价格	1 A/0.6 A DC to DC Switching Regulator Independent Positive and Negative Outputs
ADP5072ACBZ-R7	ADI	获取价格	1 A/0.6 A DC to DC Switching Regulator Independent Positive and Negative Outputs
ADP5072CB-EVALZ	ADI	获取价格	1 A/0.6 A DC to DC Switching Regulator Independent Positive and Negative Outputs
ADP5073	ADI	获取价格	2 A/1.2 A DC-to-DC Switching Regulator with Independent Positive and Negative Outputs
ADP5073ACPZ-R7	ADI	获取价格	1.2 A, DC-to-DC Inverting Regulator
ADP5073CP-EVALZ	ADI	获取价格	1.2 A, DC-to-DC Inverting Regulator
ADP5074	ADI	获取价格	2 A/1.2 A DC-to-DC Switching Regulator with Independent Positive and Negative Outputs

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