ADP5070ACPZ-R7

Overview

The ADP5070ACPZ-R7 is a dual high-performance DC-DC switching regulator manufactured by Analog Devices Inc. It generates independently regulated positive and negative output rails from a single input voltage source ranging from 2.85 V to 15 V. The device features a boost topology with adjustable outputs up to ±39 V, delivering 600 mA on the positive rail and 1 A on the negative rail. Operating at switch frequencies of 1.2 MHz or 2.4 MHz, it utilizes a 20-LFCSP package with an exposed pad for thermal management.

Feature Summary

• Generates independent positive and negative power rails from a single supply
• Supports boost and SEPIC topologies for flexible voltage conversion
• Integrated shutdown control for power management optimization

Applications

• Powering bipolar ADC/DAC/AMP circuits
• Providing dual-rail supplies for precision instrumentation
• powering sensor interfaces requiring asymmetric voltages

Procurement Notes

Verify the specific suffix against official documentation, as the provided model references an LFCSP package while common variants may use TSSOP. Confirm pinout compatibility and thermal requirements before integration. Ensure the selected frequency setting matches system noise constraints. Validate that the input voltage range aligns with the application's supply characteristics.

Selection Notes

Select this component when dual isolated rails are required from a single low-voltage source. Compare current capabilities against load demands, noting the asymmetrical 600 mA positive and 1 A negative ratings. Consider the LFCSP package for compact designs requiring efficient heat dissipation through the exposed pad. Evaluate the available switching frequencies to balance efficiency and EMI performance.

Part Context

This part belongs to the ADP5070 family of uPMU regulators designed for bipolar analog circuits. It simplifies power design by eliminating the need for separate positive and negative converters. The device integrates control loops and switches into a single compact solution, reducing board space and component count compared to discrete implementations.

Replacement Considerations

The ADP5070AREZ-R7 offers similar functionality but in a TSSOP-EP-20 package. Verify pin-to-pin compatibility and thermal performance differences between the LFCSP and TSSOP footprints before substitution.