Overview
The ADP5071ACPZ-R7, produced by Analog Devices Inc., is a dual high-performance DC-to-DC regulator designed to generate independently regulated positive and negative voltage rails. This regulator supports a wide input voltage range of 2.85 V to 15 V, making it versatile for various applications. It features integrated main switches that enable the generation of adjustable positive output voltages up to +39 V and negative output voltages down to -39 V below the input voltage. The device operates at selectable switching frequencies of 1.2 MHz or 2.4 MHz and can be synchronized with an external oscillator from 1.0 MHz to 2.6 MHz to enhance noise filtering in sensitive applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Input Voltage Range | 2.85 V | 15 V | |||
| Output Voltage Range (Positive) | +39 V | Adjustable | |||
| Output Voltage Range (Negative) | -39 V | Adjustable, below input voltage | |||
| Switching Frequency | 1.2 MHz | 2.4 MHz | Pin selected, or external synchronization from 1.0 MHz to 2.6 MHz | ||
| Main Switch Current (Boost) | 2.0 A | ||||
| Main Switch Current (Inverter) | 1.2 A | ||||
| Operating Temperature Range | -40°C | +125°C | Junction temperature | ||
| Package Type | 20-lead LFCSP or 20-lead TSSOP |
Key Features
- Integrated 1.2 A main switch for both positive and negative regulators.
- Adjustable positive output voltage up to +39 V and negative output voltage down to -39 V below input voltage.
- Programmable slew rate control to reduce electromagnetic interference (EMI).
- Flexible start-up sequencing: manual enable, simultaneous mode, positive supply first, or negative supply first.
- Fixed internal or resistor programmable soft start timer to prevent inrush current at power-up.
- True shutdown for both positive and negative outputs.
- Protection features include overcurrent protection (OCP), overvoltage protection (OVP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).
Applications
- Bipolar amplifiers, ADCs, DACs, and multiplexers.
- Charge-coupled device (CCD) bias supply.
- Optical module supply.
- RF power amplifier (PA) bias.
Q & A
- What is the input voltage range of the ADP5071? The input voltage range is from 2.85 V to 15 V.
- What are the maximum output voltages for the positive and negative rails? The maximum positive output voltage is +39 V, and the maximum negative output voltage is -39 V below the input voltage.
- What are the switching frequencies available for the ADP5071? The device operates at 1.2 MHz or 2.4 MHz, and can be synchronized with an external oscillator from 1.0 MHz to 2.6 MHz.
- What protection features are included in the ADP5071? The device includes overcurrent protection (OCP), overvoltage protection (OVP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).
- What are the package options for the ADP5071? The ADP5071 is available in a 20-lead LFCSP or a 20-lead TSSOP.
- What is the operating temperature range of the ADP5071? The operating temperature range is from -40°C to +125°C junction temperature.
- How does the ADP5071 manage start-up sequencing? The device offers flexible start-up sequencing options including manual enable, simultaneous mode, positive supply first, or negative supply first.
- What is the purpose of the soft start timer in the ADP5071? The soft start timer, which can be fixed internal or resistor programmable, is used to prevent inrush current at power-up.
- Does the ADP5071 support true shutdown for both outputs? Yes, the ADP5071 provides true shutdown for both positive and negative outputs.
- What tools support the ADP5071 for design and simulation? The ADP5071 is supported by the ADIsimPower tool set.
