ADP5071
PRODUCTION2 A/1.2 A DC-to-DC Switching Regulator with Independent Positive and Negative Outputs
- Part Models
- 4
- 1ku List Price
- Starting From $3.89
Overview
- 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 2.0 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 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
- 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
The ADP5071 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 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).
Flexible start-up sequencing is provided with the options of manual enable, simultaneous mode, positive supply first, and negative supply first.
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.
Other key safety features in the ADP5071 include overcurrent protection (OCP), overvoltage protection (OVP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).
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.
Applications
- Bipolar amplifiers, ADCs, DACs, and multiplexers
- Charge-coupled device (CCD) bias supply
- Optical module supply
- RF power amplifier (PA) bias
Documentation
Data Sheet 1
User Guide 2
Application Note 2
Technical Articles 2
Analog Dialogue 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADP5071ACPZ | 20-Lead LFCSP (4mm x 4mm w/ EP) | ||
| ADP5071ACPZ-R7 | 20-Lead LFCSP (4mm x 4mm w/ EP) | ||
| ADP5071AREZ | 20-Lead TSSOP (4.4mm x 6.5mm w/ EP) | ||
| ADP5071AREZ-R7 | 20-Lead TSSOP (4.4mm x 6.5mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- ADP5071
SIMPLIS Models 1
ADP507x Design Tool
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.