Basic Product Information
Part Number: TPS77001DBVR
Core Electrical Parameters
| Parameter |
Value |
Unit |
| Output Type |
Adjustable |
– |
| Input Voltage Range |
2.7 to 10 (legacy) / 2.5 to 16 (new) |
V |
| Adjustable Output Voltage |
1.2 to 5.5 |
V |
| Maximum Output Current |
50 |
mA |
| Dropout Voltage (typ @ 50mA) |
35 |
mV |
| Quiescent Current (typ) |
17 |
μA |
| Shutdown Current (typ) |
<1 |
μA |
| Output Accuracy (new chip) |
1.2% over load and temperature |
– |
| PSRR (1kHz / 1MHz, new chip) |
>70 / 46 |
dB |
| Internal Soft-Start (new chip) |
750 |
μs |
| Enable Input |
Yes |
– |
| Thermal Shutdown |
Yes |
– |
| Overcurrent Protection |
Yes |
– |
| Minimum Output Capacitor |
4.7μF (legacy) / 2.2μF (new) |
– |
| Operating Temperature |
-40 to +125 |
°C |
| Package Thermal Resistance (θJA) |
178.6 |
°C/W |
Core Features & Advantages
The TPS77001DBVR delivers ultra-low quiescent current LDO regulation in a 5-pin SOT-23 package, optimized for battery-powered systems where every microamp matters.
- Primary Function: Adjustable ultra-low-IQ LDO linear regulator providing up to 50mA output with adjustable voltage from 1.2V to 5.5V, ideal for biasing microcontrollers and low-power ICs from battery or regulated rails.
- Advantages:
- Ultra-low 17μA quiescent current — PMOS pass element reduces ground current to a fraction of bipolar LDOs, dramatically extending battery life in always-on applications.
- 35mV dropout at 50mA — enables regulation from battery voltages very close to the output, maximizing usable battery capacity in single-cell Li-ion or 2-cell alkaline designs.
- <1μA shutdown current via EN pin — complete supply disconnect during sleep modes ensures near-zero drain when the system is in standby.
Typical Application Scenarios
- Industry: Portable / Battery-Powered / IoT
- Equipment: Handheld instruments, cellular phones, PDAs, battery-powered MCU systems
- Use Cases:
- Post-regulation from a switching converter to clean up ripple for sensitive RF/analog loads with >70dB PSRR at 1kHz.
- Bias voltage generation for low-power MCUs and sensors from single-cell Li-ion (3.0V–4.2V) with adjustable 1.8V/2.5V/3.3V output.
- Always-on power rail in IoT edge devices where 17μA quiescent current and <1μA shutdown minimize energy waste between transmission intervals.
Market Reference Price
| Market |
Price Range |
Currency |
| Huaqiangbei Spot |
$0.30 – $0.70 |
USD |
| Overseas B2B |
$0.60 – $1.71 |
USD |
Related Models Comparison
| Model |
Difference |
Application |
| TPS77033DBVR |
Fixed 3.3V output version, no external resistor divider needed |
Standard 3.3V MCU/sensor bias without adjustable component |
| TPS76901DBVR |
Higher current sibling (100mA), same SOT-23-5, slightly higher dropout |
Applications needing up to 100mA with same tiny footprint |
| TLV70033DDCR |
Newer generation, 200mA, 30μA IQ, smaller DFN package |
Higher current and modern package for new designs |
