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TPS7A8300RGRR

2A LDO, 6uVrms noise, -40dB PSRR@1MHz, 125mV dropout, 0.8-5V, VQFN-20, RF grade

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Pieza del fabricante：

TPS7A8300RGRR

Paquete：

VQFN-20 (RGR) 3.5 x 3.5 x 1.0 mm

Marca：
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Compromiso de calidad
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Descripción

Productos

The TPS7A8300RGRR from Texas Instruments is a 2A, ultra-low-noise (6 uVrms), high-PSRR (-40dB at 1MHz) LDO voltage regulator in a VQFN-20 (3.5×3.5mm) package. With 125mV max dropout at 2A and output voltage programmable from 0.8V to 5V via ANY-OUT or external resistors, it is designed for noise-sensitive RF and precision analog applications.

Especificaciones

Corriente de salida 2 A
Dropout Voltage (max) 125 mV @ 2A
Output Noise (10Hz-100kHz) 6 uVrms
PSRR -40 dB @ 1MHz
Input Voltage (no BIAS) 1.4 V to 6.5 V
Input Voltage (with BIAS) 1.1 V to 6.5 V
Output Voltage Range 0.8 V to 5.0 V
Accuracy 1% over line, load, and temperature
Temperatura de funcionamiento -40C to +125C

Características

  • Ultra-low 6 uVrms output noise for noise-sensitive RF applications
  • High PSRR of -40dB at 1MHz for clean supply in noisy environments
  • 125mV max dropout at 2A for efficient regulation
  • ANY-OUT programming allows output voltage setting via PCB layout without resistors
  • Supports input voltages as low as 1.1V with BIAS supply
  • Soft-start capability reduces inrush current

Aplicaciones

  • RF and wireless transceiver power supply
  • High-speed ADC/DAC voltage regulation
  • SerDes and PLL power supply filtering
  • Post-regulation for switching converters

The TPS7A8300RGRR from Texas Instruments is a 2A ultra-low-noise LDO voltage regulator in a VQFN-20 (3.5×3.5mm) package. The device delivers only 6 uVrms output noise (10Hz to 100kHz) and -40dB PSRR at 1MHz, making it ideal for noise-sensitive RF and precision analog applications. The maximum dropout voltage is 125mV at 2A, and output voltage is programmable from 0.8V to 5V using the ANY-OUT feature (PCB trace programming without external resistors) or external feedback resistors. With a BIAS supply, the device supports input voltages as low as 1.1V. The TPS7A8300 provides 1% output accuracy over line, load, and temperature, and includes soft-start for controlled output voltage ramp. Remote sense capability compensates for PCB trace resistance in high-current applications.

The TPS7A8300RGRR uses a PMOS pass element LDO architecture optimized for ultra-low noise. (1) Pass Element: A low-threshold PMOS transistor connects VIN to VOUT, controlled by the error amplifier. The PMOS architecture inherently provides low dropout (125mV max at 2A) since the gate can be driven to ground. (2) Noise Reduction: An external NR/SS capacitor filters the internal voltage reference noise, achieving the ultra-low 6 uVrms output noise specification. The same capacitor also sets the soft-start ramp time. (3) ANY-OUT Programming: Internal resistor dividers are connected to the S0-S3 pins. Connecting these pins to ground adds the corresponding resistor to the feedback network, programming the output voltage without external resistors. (4) BIAS Supply: An optional BIAS pin provides power for the internal control circuitry, enabling operation with VIN as low as 1.1V while maintaining low dropout performance. (5) Remote Sense: The SENSE pin connects directly at the load, compensating for PCB trace IR drops to maintain accurate voltage at the point of load.

Pin Nombre Tipo Función
1 OUT Salida Regulated output voltage
2 OUT Salida Regulated output voltage
3 SENTIDO Entrada Remote sense feedback (connect at load)
4 BIAS Potencia Optional bias supply (2.2-5.5V)
5 ES Entrada Enable (active high)
6 PG Salida Power-good output (open-drain)
7 NR/SS E/S Noise reduction / soft-start capacitor
8-11 S0-S3 Entrada ANY-OUT voltage programming pins
12 FB Entrada Feedback input (for external resistor divider)
13,14 EN Potencia Input supply voltage
  • RF transceiver power supply requiring 6 uVrms ultra-low noise and high PSRR
  • High-speed ADC/DAC voltage regulation with 1% accuracy and remote sense
  • SerDes and PLL power supply filtering in telecom and data center equipment
  • Post-regulation for switching converters in noise-sensitive signal chains
Fabricante Número de pieza Paquete Notas
TI TPS7A8400RGRR VQFN-20 3A version, same noise spec
TI TPS7A7001AJRMRR VQFN-20 3A, adjustable, similar performance
Dispositivos analógicos LT3045EMSE MSOP-10 0.5A, 0.8uVrms, ultra-low noise
TI TPS7A4700RGRR VQFN-20 1A, 3.8uVrms, even lower noise
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