Overview
The TPS70345PWPG4, produced by Texas Instruments, is a dual-output low-dropout voltage regulator designed to provide a complete power management solution for various applications, including Texas Instruments DSP, processor power, ASIC, FPGA, and digital systems. This device is particularly suited for applications requiring dual output voltage regulators with power-up sequence control. It offers high-performance power management with features such as fast transient response, high accuracy, and low quiescent current.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage (VIN1 and VIN2) | 2.7 - 6 | V |
| Output Voltage (VOUT1) | 3.3 | V |
| Output Voltage (VOUT2) | 1.2 | V |
| Output Current (Regulator 1) | 0 - 1 | A |
| Output Current (Regulator 2) | 0 - 2 | A |
| Quiescent Current | 185 mA (typ) | mA |
| Standby Current | 2 mA | mA |
| Power Supply Rejection Ratio (PSRR) | 65 dB (Regulator 1), 60 dB (Regulator 2) | dB |
| Thermal Shutdown Junction Temperature | +150°C | °C |
| Package | 24-Pin PowerPAD™ TSSOP |
Key Features
- Dual output voltages with power-up sequence control
- Fast transient response and high accuracy (2% over load and temperature)
- Low quiescent current (185 mA typ) and low standby current (2 mA)
- Integrated SVS (power-on reset, RESET) and power good (PG1) features
- Manual reset inputs and enable function for sleep mode
- Quick output capacitor discharge feature
- Low noise output performance without added filter bypass capacitors
- Stable with 47 μF low ESR capacitors
- Undervoltage lockout (UVLO) feature and thermal shutdown protection
Applications
The TPS70345PWPG4 is designed for a variety of high-performance applications, including:
- Texas Instruments DSP power management
- Processor power management
- ASIC and FPGA power management
- Digital systems requiring dual output voltage regulators
Q & A
- What is the input voltage range for the TPS70345PWPG4?
The input voltage range is 2.7 V to 6 V. - What are the output voltages for Regulator 1 and Regulator 2?
Regulator 1 outputs 3.3 V, and Regulator 2 outputs 1.2 V. - What is the maximum output current for each regulator?
Regulator 1 can support up to 1 A, and Regulator 2 can support up to 2 A. - What is the quiescent current of the TPS70345PWPG4?
The quiescent current is typically 185 mA. - Does the TPS70345PWPG4 have power-up sequence control?
Yes, it has programmable power-up sequence control. - What is the thermal shutdown junction temperature?
The thermal shutdown junction temperature is +150°C. - What package type is the TPS70345PWPG4 available in?
The device is available in a 24-Pin PowerPAD™ TSSOP package. - Does the TPS70345PWPG4 have integrated reset and power good features?
Yes, it has integrated SVS (power-on reset, RESET) and power good (PG1) features. - How does the device handle output capacitor discharge when turned off?
The device has an internal discharge transistor to discharge the output capacitor when the regulator is turned off. - What is the typical power supply rejection ratio (PSRR) for the regulators?
The PSRR is typically 65 dB for Regulator 1 and 60 dB for Regulator 2.
