ADP5070 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADP5070
Manufacturer

ADI
ChipWorker Part#

CW288138560
Description

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

Datasheet

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ADP5070 Specifications

Attribute	Attribute Value

Part Number	ADP5070
Manufacturer	ADI
ChipWorker Part#	CW288138560
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
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.
The ADP5070 operates at a pin selected 1.2 MHz/2.4 MHz switching frequency. The ADP5070 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).
Flexible start-up sequencing is provided with the options of manual enable, simultaneous mode, positive supply first, and negative supply first.
The ADP5070 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.
Other key safety features in the ADP5070 include overcurrent protection (OCP), overvoltage protection (OVP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).
The ADP5070 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.
Applications
Bipolar amplifiers, ADCs, DACs and multiplexers
Charge-coupled device (CCD) bias supply
Optical module supply
RF power amplifier (PA) bias
### Features and Benefits
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
Individual precision enable and flexible start-up sequence control for symmetric start, VPOS first, or VNEG first
Out-of-phase operation
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

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