TPS7A3901DSCR.B中文资料德州仪器数据手册PDF规格书

1 Features

• Positive and negative LDOs in one package

• Wide input voltage range: ±3.3V to ±33V

• Wide output voltage range:

– Positive range: 1.2V to 30V

– Negative range: –30V to 0V

• Output current: 150mA per channel

• Monotonic start-up tracking

• High power-supply rejection ratio (PSRR):

– 69dB (120Hz)

– ≥ 50dB (10Hz to 2MHz)

• Output voltage noise: 21μVRMS (10Hz–100kHz)

• Buffered 1.2V reference output

• Stable with a 10μF or larger output capacitor

• Single positive-logic enable

• Adjustable soft-start in-rush control

• 3mm × 3mm, 10-pin WSON package

• Low thermal resistance: RθJA = 44.4°C/W

• Operating temperature range: –40°C to +125°C

2 Applications

• EV charging Infrastructure

• AC charging stations

• Industrial automation

• Medical imaging

• Energy storage systems

• PC and notebooks

3 Description

The TPS7A39 is a dual, monolithic, high-PSRR,

positive and negative low-dropout (LDO) voltage

regulator capable of sourcing (and sinking) up to

150mA of current. The regulated outputs can be

independently and externally adjusted to symmetrical

or asymmetrical voltages, making this device a good

choice to provide dual, bipolar power supply for signal

conditioning.

Both positive and negative outputs of the TPS7A39

ratiometrically track each other during start-up to

mitigate floating conditions and other power-supply

sequencing issues common in dual-rail systems. The

negative output can regulate up to 0V, extending

the common-mode range for single-supply amplifiers.

The TPS7A39 also features high PSRR to eliminate

power-supply noise, such as switching noise, that can

compromise signal integrity.