Packaging information
| Package | Pins WQFN (RSB) | 40 |
| Operating temperature range (°C) |
| Package qty | Carrier 1,000 | SMALL T&R |
Features for the LP3971
- Compatible with Advanced Applications Processors Requiring DVM (Dynamic Voltage Management)
- Three Buck Regulators for Powering High Current Processor Functions or I/O's
- 6 LDO's for Powering RTC, Peripherals, and I/O's
- Backup Battery Charger with Automatic Switch for Lithium-Manganese Coin Cell Batteries and Super Capacitors
- I2C Compatible High Speed Serial Interface
- Software Control of Regulator Functions and Settings
- Precision Internal Reference
- Thermal Overload Protection
- Current Overload Protection
- Tiny 40-pin 5x5 mm WQFN Package
Key Specifications
- Buck
Regulators
- Programmable VOUT from 0.725 to 3.3V
- Up to 95% Efficiency
- Up to 1.6A Output Current
- ±3% Output Voltage Accuracy
- LDO’s
- Programmable VOUT of 1.0V–3.3V
- ±3% output voltage accuracy
- 150/300/370 mA output currentsLDO RTC 30 mALDO 1 300 mALDO 2 150 mALDO 3 150 mALDO 4 150 mALDO 5 370 mA
- 100 mV (typ) dropout
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Description for the LP3971
The LP3971 is a multi-function, programmable Power Management Unit, designed especially for advanced application processors. The LP3971 is optimized for low power handheld applications and provides 6 low dropout, low noise linear regulators, three DC/DC magnetic buck regulators, a back-up battery charger and two GPIO’s. A high speed serial interface is included to program individual regulator output voltages as well as on/off control.