TPS7A3001DGNR中文资料德州仪器数据手册PDF规格书

1 Features

1• Input Voltage Range: –3 V to –35 V

• Noise:

– 14 μVRMS (20 Hz to 20 kHz)

– 15.1 μVRMS (10 Hz to 100 kHz)

• Power-Supply Ripple Rejection:

– 72 dB (120 Hz) power–

≥ 55 dB (10 Hz to 700 kHz)

• Adjustable Output: –1.18 V to –33 V

• Maximum Output Current: 200 mA

• Dropout Voltage: 216 mV at 100 mA

• Stable with Ceramic Capacitors ≥ 2.2 μF high•

CMOS Logic-Level-Compatible Enable Pin

• Built-In, Fixed, Current Limit and Thermal

Shutdown Protection

• Packages: 8-Pin HVSSOP PowerPAD™ and

3-mm × 3-mm VSON

• Operating Temperature Range:

–40°C to 125°C

2 Applications

• Supply Rails for Operational Amplifiers, DACs,

ADCs, and Other High-Precision Analog Circuitry

• Audio

• Post DC-DC Converter Regulation and

Ripple Filtering

• Test and Measurement

• RX, TX, and PA Circuitry

• Industrial Instrumentation

• Base Stations and Telecom Infrastructure

• –12-V and –24-V Industrial Buses

3 Description

The TPS7A30 series of devices are negative, high-

voltage (–35 V), ultralow-noise (15.1 μVRMS, 72-dB PSRR) linear regulators that can source a maximum

load of 200 mA.

These linear regulators include a CMOS logic-level-

compatible enable pin and capacitor-programmable

soft-start function that allows for customized power–

management schemes. Other features include built-in current limit and thermal shutdown protection to

safeguard the device and system during fault

conditions.

The TPS7A30 family is designed using bipolar

technology, and is ideal for high-accuracy, high•

precision instrumentation applications where clean voltage rails are critical to maximize system

performance. This design makes the device an

excellent choice to power operational amplifiers,

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

converters (DACs), and other high-performance

analog circuitry.

In addition, the TPS7A30 family of linear regulators is

suitable for post dc-dc converter regulation. By

filtering out the output voltage ripple inherent to dc-dc

switching conversion, maximum system performance

is provided in sensitive instrumentation, test and

measurement, audio, and RF applications.

For applications that require positive and negative

high-performance rails, consider TI’s TPS7A49 family

of positive high-voltage, ultralow-noise linear

regulators.