Analog Devices ADP5051ACPZ-R7 integrates four high performance buck regulators and a supervisory circuit with a voltage monitor, a watchdog function, and a manual reset in a 48-lead LFCSP package to meet demanding performance and board space requirements. ADP5051ACPZ-R7 allows a direct connection to high input voltages up to 15.0V with no preregulators. Channel 1 and Channel 2 provide high-side power MOSFET and low-side MOSFET drivers. In low-side power devices, external NFETs achieve an efficiency optimized solution and deliver a programmable output current of 1.2A, 2.5A, or 4A. The ADP5051ACPZ-R7 supervisory circuits monitor voltage level. The watchdog timer generates a reset when the WDI does not toggle within a preset timeout period. An optional I2C Interface. interface offers flexible configurations, including adjustable and fixed output voltage, junction temperature overheat warning, low input voltage detection, and dynamic voltage scaling. The design makes the ADP5051ACPZ-R7 an ideal integrated power solution for small cell base stations, FPGA and processor applications, security & surveillance, and medical applications.
Feature
- Wide input voltage range: 4.5 V to 15.0 V
- ±1.5% output accuracy over full temperature range
- 250 kHz to 1.4 MHz adjustable switching frequency
- Adjustable/fixed output options via factory fuse or I2C interface
- I2C interface with interrupt on fault conditions
- Power regulationChannel 1 and Channel 2: programmable 1.2 A/2.5 A/4 A sync buck regulators with low-side FET driverChannel 3 and Channel 4: 1.2 A sync buck regulators
- Single 8 A output (Channel 1 and Channel 2 in parallel)
- Dynamic voltage scaling (DVS) for Channel 1 and Channel 4
- Precision enable with 0.8 V accurate threshold
- Active output discharge switch
- Programmable phase shift in 90° steps
- Individual channel FPWM/PSM selection
- Frequency synchronization input or output
- See data sheet for additional features
Applications
- Small cell base stations
- FPGA and processor applications
- Security and surveillance
- Medical applications
(Picture: Pinout)
