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TPS72012DRVR

350mA LDO, 1.2V Fixed, 110mV VDO, 80dB PSRR, 38uA IQ, WSON-6

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Pieza del fabricante：

TPS72012DRVR

Paquete：

WSON-6 (2 x 2 x 0.75 mm, exposed pad)

Marca：
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Descripción

Productos

The TPS72012DRVR from Texas Instruments is a 350 mA ultra-low VIN RF low-dropout linear regulator with a bias pin. It features 1.2 V fixed output, 38 µA quiescent current, 80 dB PSRR, and 110 mV dropout at full load in a tiny 6-pin WSON package.

Especificaciones

Tipo Low-Dropout Linear Regulator (LDO)
Output Voltage 1.2 V (Fixed)
Corriente de salida 350 mA
Input Voltage (VIN) 1.1 V to 4.5 V
Bias Voltage (VBIAS) 1.4 V above VOUT min
Dropout Voltage 110 mV @ 350 mA
Corriente de reposo 38 µA
PSRR (VIN) 80 dB (10 Hz to 10 kHz)
Output Noise 48 µVRMS (10 Hz to 100 kHz)
Soft Start Built-in, 140 µs start-up
Paquete WSON-6 (2 x 2 mm)
Temperatura de funcionamiento -40°C to 125°C

Características

  • 350 mA output current with ultra-low VIN (1.1 V min)
  • Dual-rail architecture: VIN for power path, VBIAS for control
  • 38 µA low quiescent current
  • 80 dB PSRR for noise-sensitive RF applications
  • Built-in soft start with monotonic VOUT rise
  • Regulates under light loads when IN pin is floating
  • Overcurrent and thermal protection
  • Stable with 2.2 µF ceramic output capacitor

Aplicaciones

  • RF and wireless connectivity power supplies
  • Post-regulation from DC-DC converters
  • Portable and battery-powered devices
  • Digital cameras and camera phones
  • Handheld instruments

The TPS72012DRVR from Texas Instruments is a 350 mA dual-rail low-dropout linear regulator with a fixed 1.2 V output. The dual-rail architecture separates the power input (VIN) from the bias supply (VBIAS), allowing VIN to operate as low as VOUT + VDO (1.1 V minimum) while VBIAS powers the control circuitry. This configuration maximizes efficiency in systems where VIN comes from a high-efficiency DC-DC converter. The device delivers 80 dB PSRR and 48 µVRMS output noise, making it ideal for RF and noise-sensitive applications. Built-in soft start ensures monotonic output rise with inrush current limited to 100 mA plus load current. The unique light-load regulation feature maintains output even when the IN pin is floating, sourcing current from VBIAS.

The TPS72012DRVR uses a dual-rail LDO architecture where VIN carries the main load current and VBIAS powers the internal control circuitry (error amplifier, bandgap reference, protection circuits). The error amplifier compares the feedback voltage from the internal resistor divider against the bandgap reference (0.5 V) and drives the pass transistor to regulate the output at 1.2 V. The P-channel MOSFET pass element allows low dropout operation. The bias rail enables the control circuit to function even when VIN is very close to VOUT. The integrated soft-start circuit limits inrush current during power-up. Overcurrent protection limits the pass transistor gate drive when output current exceeds the safe threshold. Thermal shutdown disables the output when junction temperature exceeds 160°C. The enable pin allows the device to be shut down, reducing current to less than 1 µA.

Pin Nombre Tipo Función
1 EN Potencia Input supply voltage (1.1-4.5V)
2 GND Suelo Suelo
3 ES Entrada Enable (active high)
4 BIAS Potencia Bias supply voltage
5 OUT Salida Regulated 1.2V output
6 PG Salida Power good (open drain)
Tampón GND Suelo Exposed thermal pad
  • RF power amplifier and transceiver supply regulation
  • Post-DC-DC LDO for noise-sensitive analog/RF circuits
  • Portable devices requiring ultra-low standby current
  • Camera module and image sensor power supplies
  • Bluetooth/Wi-Fi module clean power rails
Fabricante Número de pieza Paquete Notas
Texas Instruments TPS72018DRVR WSON-6 1.8V output variant
Texas Instruments TPS73633DBVR SOT-23-5 3.3V, 400mA, low noise
Dispositivos analógicos LT3008ETS8-1.2#TRPBF TSOT-23-8 1.2V, 300mA, 3µA IQ
Microchip MCP1824T-1202E/OT SOT-23-5 1.2V, 300mA LDO
onsemi NCP511SN120T1G TSOP-5 1.2V, 150mA, low noise
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