产品概览
The TPS73701DRBT from Texas Instruments is a 1A low-dropout (LDO) linear regulator with reverse current protection and adjustable output (1.2V to 5.5V). Using an NMOS pass element, it achieves 130 mV typical dropout at 1A and is stable with only 1 uF ceramic output capacitor. The DRBT suffix denotes the 8-pin VSON (3x3mm) package in tape-and-reel.
主要规格
| 类型 | 1A LDO Linear Regulator (Adjustable) |
| 输出电流 | 1 A |
| 输入电压 | 2.2V – 5.5V |
| Output Voltage | 1.2V – 5.5V (adjustable via FB) |
| Dropout Voltage | 130 mV (typical at 1A) |
| Accuracy | 1% initial, 3% over line/load/temp |
| PSRR | 33 dB @ 100 kHz |
| Output Noise | 48 uVrms (10 Hz – 100 kHz) |
| 静态电流 | 400 uA (typical) |
| Shutdown IQ | < 20 nA (typical) |
| Stability | 1 uF ceramic output capacitor |
| Protection | Reverse current, thermal shutdown, foldback current limit |
| 包装 | VSON-8 (DRB, 3 x 3 mm) |
| Operating Temp | -40 to 125 C |
特点
- NMOS topology for low reverse leakage current
- Ultra-low 130 mV dropout at 1A
- Stable with only 1 uF ceramic output capacitor
- Adjustable output from 1.2V to 5.5V via FB resistor divider
- Reverse current protection prevents back-driving
- < 20 nA shutdown current for battery-powered applications
- 1% initial output voltage accuracy
- Thermal shutdown and foldback current limit protection
应用
- Portable electronics: Ultra-low IQ shutdown for battery life
- Post-regulation for switching supplies: 33 dB PSRR
- FPGA and DSP core power: Adjustable 1.2V-1.8V
- USB-powered devices: 5V to 3.3V regulation
- Industrial sensors: Wide -40 to 125 C operation