具有 I2C 接口的雙路高電流降壓直流/直流和雙路線性穩(wěn)壓器
| Regulated outputs (#) | 4 |
| Vin (Min) (V) | 2.8 |
| Vin (Max) (V) | 5.5 |
| Iout (Max) (A) | 1.2 |
| Rating | Automotive |
| LDO | 2 |
| Iq (Typ) (mA) | 0.04 |
| Features | Enable Pin, I2C Control, Power Good, Power Sequencing, Spread-Spectrum Clock (SSC) Generation, Thermal Shutdown, UVLO Adjustable |
| Processor name | Generic |
| Processor supplier | Generic |
| Shutdown current (ISD) (Typ) (uA) | 0.03 |
| Switching frequency (Typ) (kHz) | 2100 |
| Configurability | Factory programmable, Software configurable |
- Two LDOs for Powering Internal Processor Functions and I/Os
- High-Speed Serial Interface for Independent Control of Device
Functions and Settings - Precision Internal Reference
- Thermal Overload Protection
- Current Overload Protection
- Software Programmable Regulators
- External Power-On-Reset Function for Buck1 and Buck2
(Power Good with Delay Function) - Undervoltage Lockout (UVLO)
- LP8731-Q1 is an Automotive-Grade Product: AECQ-100
Grade-1 Qualified - Step-Down DC/DC Converter (2xBuck)
- Programmable VOUT from:
- Buck1 : 0.8875 V – 1.675 V at 1.2 A
- Buck2 : 0.8875 V – 1.675 V at 1.2 A
- Up to 96% Efficiency
- PWM Switching Frequency of 2.1 MHz
- ±2% Output Voltage Accuracy
- Automatic Soft Start
- Programmable VOUT from:
- Linear Regulators (2xLDO)
- Programmable VOUT of 0.8 V to 3.3 V
- ±3% Output Voltage Accuracy
- 300-mA Output Current
- 30-mV (Typical) Dropout
The LP8731-Q1 is a multi-function, programmable Power Management Unit (PMU), optimized for low power FPGAs, microprocessors, and DSPs. This device integrates two highly efficient 1.2-A step-down DC-DC converters with dynamic voltage management (DVM), two 300-mA linear regulators, and a 400-kHz I2C-compatible interface to allow a host controller access to the internal control registers of the LP8731-Q1. The LP8731-Q1 device additionally features programmable power-on sequencing.
