深圳市中立信电子科技有限公司

ADP5070AREZ

开关稳压器 uPMU V+/V- sw reg for bipolarADC/DAC/AMP

1 A/0.6 A, DC-to-DC Switching Regulator with  Independent Positive and Negative Outputs

GENERAL DESCRIPTION ADP5070AREZ

The ADP5070 is a dual high performance dc-to-dc regulator that generates independently regulated positive and negative rails.

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.

FEATURES ADP5070AREZ

Wide input supply voltage range: 2.85 V to 15 V

Generates well regulated, independently resistor

programmable VPOS and VNEG outputs

Boost regulator to generate VPOS output

Adjustable positive output to 39 V

Integrated 1.0 A main switch

Optional single-ended primary-inductor converter (SEPIC)

configuration for automatic step-up/step-down

Inverting regulator to generate VNEG output

Adjustable negative output to VIN − 39 V

Integrated 0.6 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

Slew rate control for lower system noise

APPLICATIONS ADP5070AREZ

Bipolar amplifiers, ADCs, DACs and multiplexers

Charge-coupled device (CCD) bias supply

Optical module supply

RF power amplifier (PA) bias