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Low Noise, 1A Synchronous Inverting Buck Converter in 3x3 WSON Package


Package | PIN: DRR | 12
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $2.44
10-24 $2.20
25-99 $2.04
100-249 $1.79
250-499 $1.68
500-749 $1.43
750-999 $1.20
1000+ $1.15


  • 3.1 V to 14 V Input Voltage Range
  • 1 A Output Current
  • Up to 91% Efficiency
  • ±1.5% Output Voltage Accuracy
  • Synchronous Rectification
  • Low 1/f-Noise Reference System
  • Noise: 22 µVRMS (10 Hz to 100 kHz)
  • Output Voltage: -1 V to -5.5 V
  • |VOUT| < 0.7 x VIN
  • 1.5-MHz fixed frequency PWM mode
  • Thermal Shutdown
  • 5-µA Shutdown Current
  • 3-mm × 3-mm WSON Package
  • Create a Custom Design Using the TPS63710 With the WEBENCH® Power Designer

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Texas Instruments  TPS63710DRRR

The TPS63710 is an inverting step-down dc-dc converter generating a negative outputvoltage down to -5.5 V. It provides an output current up to 1 A, depending on the input-voltage tooutput-voltage ratio. Its filtered reference system gives low 1/f noise which is required in highperformance telecommunication systems.

The TPS63710 operates with a fixed-frequency PWM control topology. It has an internalcurrent limit and a thermal shutdown. The input voltage range of 3.1 V to 14 V allows the TPS63710to be used in a variety of applications where a negative output voltage is generated from a, inabsolute value, higher positive input voltage.

Synchronous rectification provides high efficiency especially for small output voltageslike -1.8 V, which are typically used as a negative supply voltage for high performance DACs andADCs. A fixed switching frequency of 1.5 MHz allows the use of small external components andenables a small total solution size.

The TPS63710 comes in a 3-mm × 3-mm WSON package that provides good thermal performancein applications running at high ambient temperature.