1 Features

1• Input Voltage Range: –3 V to –20 V

• Noise:

– 80 μVRMS (10 Hz to 100 kHz)

• Power-Supply Ripple Rejection:

– 50 dB (1 kHz)

– ≥ 27 dB (10 Hz to 1 MHz)

• Adjustable Output:

Approximately –1.18 V to –18 V

• Maximum Output Current: 200 mA

• Dropout Voltage: 500 mV at 100 mA

• Stable With Ceramic Capacitors ≥ 2.2 μF

• CMOS Logic-Level-Compatible Enable Pin

• Built-In, Fixed, Current Limit, and Thermal

Shutdown Protection

• Available in High Thermal Performance MSOP-8

PowerPAD™ Package

• Operating Temperature Range: –40°C to 125°C

2 Applications

• Cost-Effective Supply Rails for Op Amps, DACs,

ADCs, and Other High-Precision Analog Circuitry

• Cost-Effective Post DC-DC Converter Regulation

and Ripple Filtering

3 Description

The TPS7A3401 device is a negative, high-voltage

(–20-V), low-noise linear regulator capable of sourcing a maximum load of 200 mA.

These linear regulators include a CMOS logic-level-

compatible enable pin. Other features available

include built-in current limit and thermal shutdown

protection to safeguard the device and system during

fault conditions.

The TPS7A3401 is designed using bipolar

technology, and is ideal for instrumentation

applications where clean voltage rails are critical for

improving system performance. This design makes it

a cost-effective choice to power operational

amplifiers, analog-to-digital converters (ADCs),

digital-to-analog converters (DACs), and other analog circuitry.

In addition, the TPS7A3401 linear regulator is

suitable for cost-effective, post DC-DC converter regulation. By filtering out the output voltage ripple

inherent to DC-DC switching conversion, increased

system performance is provided in instrumentation

applications.