Overview
The ADP5135ACPZ-R7 is a high-performance triple buck regulator produced by Analog Devices Inc. This integrated circuit combines three independent buck regulators, each capable of delivering up to 1800 mA of output current. The device is housed in a compact 24-lead LFCSP (Lead Frame Chip Scale Package) with a footprint of 4 mm x 4 mm, making it ideal for space-constrained applications. The ADP5135 features a high switching frequency of 3 MHz, which allows for the use of tiny multilayer external components, thereby minimizing board space.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | VIN | 3.0 | 5.5 | V | |
| Output Voltage Range (BUCK1/BUCK2/BUCK3) | VOUT | 0.8 | 3.8 | V | |
| Output Current (BUCK1/BUCK2/BUCK3) | IOUT | 1800 | mA | ||
| Switching Frequency | fSW | 3 | MHz | ||
| Output Voltage Accuracy (PWM mode) | ΔVOUT/VOUT | -1.8% | +1.8% | % | |
| Line Regulation (PWM mode) | (ΔVOUT/VOUT)/ΔVIN | -0.05% | %/V | ||
| Operating Temperature Range | TJ | -40 | 125 | °C |
Key Features
- High Switching Frequency: 3 MHz operation with forced PWM and auto PWM/PSM modes, enabling the use of small external components and minimizing board space.
- Adjustable Output Voltage: Each buck regulator (BUCK1, BUCK2, BUCK3) has an output voltage range from 0.8 V to 3.8 V.
- Precision Enable and Shutdown Control: Individual enable control pins for each regulator, allowing for precise control over each channel.
- Power-Good Outputs: Power-good pins for monitoring each regulator, providing status feedback.
- Thermal and UVLO Protection: Thermal shutdown and undervoltage lockout (UVLO) protection to ensure safe operation.
- Compact Package: 24-lead LFCSP package with a footprint of 4 mm x 4 mm, suitable for space-constrained designs.
Applications
- Power for Processors, ASICs, FPGAs, and RF Chipsets: Suitable for powering a variety of high-performance integrated circuits.
- Portable Instrumentation and Medical Devices: Ideal for applications requiring compact, high-efficiency power solutions.
- Space-Constrained Devices: Perfect for designs where board space is limited.
Q & A
- What is the input voltage range of the ADP5135?
The input voltage range of the ADP5135 is from 3.0 V to 5.5 V.
- How many buck regulators does the ADP5135 have, and what is their output current capability?
The ADP5135 has three buck regulators, each capable of delivering up to 1800 mA of output current.
- What is the switching frequency of the ADP5135?
The switching frequency of the ADP5135 is 3 MHz.
- What is the output voltage range for each buck regulator?
Each buck regulator (BUCK1, BUCK2, BUCK3) has an output voltage range from 0.8 V to 3.8 V.
- Does the ADP5135 have power-good outputs?
Yes, the ADP5135 has power-good pins for monitoring each regulator.
- What type of package does the ADP5135 come in?
The ADP5135 is available in a 24-lead LFCSP (Lead Frame Chip Scale Package) with a footprint of 4 mm x 4 mm.
- What are some common applications for the ADP5135?
The ADP5135 is commonly used in powering processors, ASICs, FPGAs, RF chipsets, portable instrumentation, medical devices, and other space-constrained applications.
- Does the ADP5135 have thermal and UVLO protection?
Yes, the ADP5135 features thermal shutdown and undervoltage lockout (UVLO) protection.
- How does the ADP5135 handle load transients?
The ADP5135 can handle load transients effectively, with figures showing responses to load transients in various modes (e.g., auto mode, PWM mode).
- Can the ADP5135 operate in different modes?
Yes, the ADP5135 can operate in forced PWM mode or auto PWM/PSM mode, depending on the state of the MODE pin.
