TPS7A30数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 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.

特性 Features

• 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)
• ≥ 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
• CMOS Logic-Level-Compatible Enable Pin
• Built-In, Fixed, Current Limit and ThermalShutdown Protection
• Packages: 8-Pin HVSSOP PowerPAD™ and3-mm × 3-mm VSON
• Operating Temperature Range:–40°C to +125°C