Texas Instruments TPS63710

Description

The TPS63710 is an inverting step-down dc-dc converter generating a negative output voltage down to -5.5 V. It provides an output current up to 1 A, depending on the input-voltage to output-voltage ratio. Its filtered reference system gives low 1/f noise which is required in high performance telecommunication systems. The TPS63710 operates with a fixed-frequency PWM control topology. It has an internal current limit and a thermal shutdown. The input voltage range of 3.1 V to 14 V allows the TPS63710 to be used in a variety of applications where a negative output voltage is generated from a, in absolute value, higher positive input voltage. Synchronous rectification provides high efficiency especially for small output voltages like -1.8 V, which are typically used as a negative supply voltage for high performance DACs and ADCs. A fixed switching frequency of 1.5 MHz allows the use of small external components and enables a small total solution size. The TPS63710 comes in a 3-mm × 3-mm WSON package that provides good thermal performance in applications running at high ambient temperature.

Features

• 3.1 V to 14 V Input Voltage Range
• 1 A Output Current
• ±1.5% Output Voltage Accuracy
• Synchronous Rectification
• Low 1/f-Noise Reference System
• Output Voltage: -1 V to -5.5 V
• |VOUT| < 0.7 x VIN
• Up to 91% Efficiency
• 1.5-MHz fixed frequency PWM mode
• Thermal Shutdown
• 5-μA Shutdown Current
• 3-mm × 3-mm WSON Package-

Typical applications

• Noise Sensitive and Space Limited Applications Requiring a Negative Supply Voltage
• ADC and DAC Supply in Telecom Systems
• Generic Negative Voltage Supply, Bias for GaN transistors, Optical Module Laser Diode Bias

More information

• Datasheet
• IC product information