Product Details

describe:

The TPS7A21 is an ultra-small AO3402L low dropout (LDO) linear regulator capable of delivering 500 mA of output current. The device offers low noise, high PSRR, and excellent load and line transient performance to meet the requirements of RF and other sensitive analog circuits. Innovative design techniques achieve low noise performance without adding external noise bypass capacitors. The low quiescent current of the TPS7A21 is ideal for battery powered systems. The 2.0V to 6.0V input voltage range and 0.8V to 5.5V output voltage range support various system requirements. An internal precision reference circuit achieves excellent accuracy; maximum output voltage tolerance is 1.5% over load, line, and temperature variations.

Internal soft-start circuitry helps control inrush current to minimize input voltage drop during startup. The LDO is stable with small ceramic capacitors, enabling a small overall solution size.

A smart-enable input circuit with an internally controlled pull-down resistor keeps the LDO disabled even when the EN pin is not connected and helps eliminate the external components required to pull down the EN input.

characteristic:

● Very low IQ: 6.5 μA

●Input voltage range: 2.0 V to 6.0 V

●Output voltage range: 0.8 V to 5.5 V (50 mV steps)

High PSRR: 91 dB at 1 kHz

●Low output voltage noise: 7.7 μV RMS

●Low differential pressure:

○ 175 mV (max) at 500 mA (2.5-VV output)

●Smart EN pull-down

●Output voltage tolerance: ±1.5%

●Stable with 1μF ceramic output capacitor

●Operating Junction Temperature: –40°C to +125°C

●Package:

○0.602-mm × 0.602-mm power DSBGA

parameter:

Output Options: Fixed Output

Iout (Max) (A): 0.5

Vin (max) (V): 6

Vin (minimum) (V): 2

Output voltage (max) (V): 5.5

Output Voltage (Min) (V): 0.8

Fixed output option (V): 3.3

Noise (uVrms): 7.7

Iq (typ) (mA): 0.007

Thermal Resistance θJA (°C/W): 197.1

Load capacitance (Min) (μF): 1

Adjustment output (#): 1

Features: Enable, Output Discharge

Accuracy (%): 1.5

PSRR @ 100 KHz (dB): 61

Dropout (Vdo) (typ) (mV): 175

Operating temperature range (°C): -40 to 125