TPS7A3001

Part: TPS7A30 — Texas Instruments

Type: Negative Linear Regulator

Description: -35 V input, 200 mA ultralow-noise negative linear regulator with 15.1 μVRMS noise, 72 dB PSRR, and adjustable output from -1.18 V to -33 V.

Operating Conditions:

• Supply voltage: -35 to -3 V
• Operating temperature: -40 to 125 °C (operating junction temperature)
• Output current: 0 to 200 mA
• Output voltage range: VREF to 33 V

Absolute Maximum Ratings:

• Max supply voltage: -36 to 0.3 V (IN pin to GND pin)
• Max junction/storage temperature: 150 °C (storage temperature), 125 °C (operating virtual junction)

Key Specs:

• Output voltage: -1.18 V to -33 V (adjustable)
• Maximum output current: 200 mA
• Dropout voltage: 216 mV at 100 mA
• Output noise: 14 μVRMS (20 Hz to 20 kHz)
• Output noise: 15.1 μVRMS (10 Hz to 100 kHz)
• Power-supply ripple rejection: 72 dB at 120 Hz
• Power-supply ripple rejection: ≥ 55 dB (10 Hz to 700 kHz)
• Minimum stable output capacitance: 2.2 μF

Features:

• Wide input voltage range: -3 V to -35 V
• CMOS logic-level-compatible enable pin
• Capacitor-programmable soft-start function
• Built-in, fixed current limit and thermal shutdown protection
• Stable with ceramic capacitors ≥ 2.2 μF
• Bipolar technology designed for high-accuracy analog rails

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

Package:

• 8-pin HVSSOP PowerPAD (3.00 mm × 3.00 mm body size)
• 8-pin VSON (3.00 mm × 3.00 mm body size)

• 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

The TPS7A30 series of devices are negative, highvoltage (-35 V), ultralow-noise (15.1 μ VRMS, 72-dB PSRR) linear regulators that can source a maximum load of 200 mA.

These linear regulators include a CMOS logic-levelcompatible enable pin and capacitor-programmable soft-start function that allows for customized powermanagement 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, highprecision 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.

DGN Package 8-Pin HVSSOP PowerPAD Top View DRB Package VSON-8 Top View

At TJ = -40°C to 125°C, |VIN| = |VOUT(nom) | + 1 V or |V IN | = 3 V (whichever is greater), VEN = VIN, IOUT = 1 mA, CIN = 2.2 μF, COUT = 2.2 μF, CNR/SS = 0 nF, and the FB pin tied to OUT, unless otherwise noted. Typical values are at TA = 25°C.

over operating free-air temperature range (unless otherwise noted) (1)

over operating free-air temperature range (unless otherwise noted)

The TPS7A30 belongs to a family of linear regulators that use an innovative bipolar process to achieve ultralownoise. The TPS7A30 are bipolar-based devices and are therefore ideal for high-accuracy, high-performance analog applications at higher voltages.