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Overview
Features and Benefits
- Wide input voltage range:
2.85 V to 15 V - Adjustable negative output to VIN − 39 V
- Integrated 1.2 A main switch
- 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
- Precision enable control
- Power-good output
- UVLO, OCP, OVP, and TSD protection
- 3 mm × 3 mm, 16-lead LFCSP
- −40°C to +125°C junction temperature
- Supported by the ADIsimPower tool set
Product Details
The ADP5073 is a high performance dc-to-dc inverting regulator used to generate negative supply rails.The input voltage range of 2.85 V to 15 V supports a wide variety of applications. The integrated main switch enables the generation of an adjustable negative output voltage down to 39 V below the input voltage.
The ADP5073 operates at a pin selected 1.2 MHz/2.4 MHz switching frequency. The ADP5073 can synchronize with an external oscillator from 1.0 MHz to 2.6 MHz to ease noise filtering in sensitive applications. The regulator implements programmable slew rate control circuitry for the MOSFET driver stage to reduce electromagnetic interference (EMI).
The ADP5073 includes a fixed internal or resistor programmable soft start timer to prevent inrush current at power-up. During shutdown, the regulator completely disconnects the load from the input supply to provide a true shutdown. A power-good pin is available to indicate the output is stable.
Other key safety features in the ADP5073 include overcurrent protection (OCP), overvoltage protection (OVP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).
The ADP5073 is available in a 16-lead LFCSP and is rated for a −40°C to
Applications
- Bipolar amplifiers, ADCs, digital-to-analog converters (DACs), and multiplexers
- High speed converters
- Radio frequency (RF) power amplifier (PA) bias
- Optical modules
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Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (2)
Documentation
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
Design Tools
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
Reference Materials
Technical Articles (1)
Design Resources
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ADP5073 Discussions
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.