Product details

Display type AMOLED IC integration AMOLED bias Vin (Min) (V) 2.9 Vin (Max) (V) 4.5 Level shifter/scan driver (ch) 0 V_POS (Min) (V) 4.6 V_POS (Max) (V) 4.6 V_NEG (Min) (V) -4.4 V_NEG (Max) (V) -1.4 Features Digital control interface Topology Boost, Buck-Boost Rating Catalog
Display type AMOLED IC integration AMOLED bias Vin (Min) (V) 2.9 Vin (Max) (V) 4.5 Level shifter/scan driver (ch) 0 V_POS (Min) (V) 4.6 V_POS (Max) (V) 4.6 V_NEG (Min) (V) -4.4 V_NEG (Max) (V) -1.4 Features Digital control interface Topology Boost, Buck-Boost Rating Catalog
WSON (DPD) 12 9 mm² 3 x 3
  • 2.9–V to 4.5–V Input Voltage Range
  • Fixed 4.6–V Positive Output Voltage
  • 0.5% VPOS Accuracy from 25°C to 85°C
  • Separate VPOS Output Sense Pin
  • Negative Output Voltage Digitally Programmable from
    –1.4 V to –4.4 V (–4 V Default)
  • Output Currents up to 250 mA Supported
  • Excellent Line Transient Regulation
  • Short-Circuit Protection
  • Thermal Shutdown
  • Available in 3.00–mm × 3.00–mm, 12–Pin QFN Package
  • 2.9–V to 4.5–V Input Voltage Range
  • Fixed 4.6–V Positive Output Voltage
  • 0.5% VPOS Accuracy from 25°C to 85°C
  • Separate VPOS Output Sense Pin
  • Negative Output Voltage Digitally Programmable from
    –1.4 V to –4.4 V (–4 V Default)
  • Output Currents up to 250 mA Supported
  • Excellent Line Transient Regulation
  • Short-Circuit Protection
  • Thermal Shutdown
  • Available in 3.00–mm × 3.00–mm, 12–Pin QFN Package

The TPS65631 is designed to drive AMOLED (Active Matrix Organic Light Emitting Diode) displays requiring positive and negative supply rails. The device integrates a boost converter for VPOS and an inverting buck boost converter for VNEG and is suitable for battery-operated products. The digital control pin (CTRL) allows programming the negative output voltage in digital steps. The TPS65631 uses a novel technology enabling excellent line transient performance.

For all available packages, see the orderable addendum at the end of the data sheet

The TPS65631 is designed to drive AMOLED (Active Matrix Organic Light Emitting Diode) displays requiring positive and negative supply rails. The device integrates a boost converter for VPOS and an inverting buck boost converter for VNEG and is suitable for battery-operated products. The digital control pin (CTRL) allows programming the negative output voltage in digital steps. The TPS65631 uses a novel technology enabling excellent line transient performance.

For all available packages, see the orderable addendum at the end of the data sheet

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TPS65632A ACTIVE Triple Outputs AMOLED Display Power Supply This product has a 3rd rail with AVDD fixed at 7.7V, a digitally programmable VNEG and operations from -1.4 to -5.4V.

Technical documentation

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Type Title Date
* Data sheet TPS65631 Dual-Output AMOLED Display Power Supply datasheet (Rev. E) 14 May 2014
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) 19 Sep 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Basic calculation of an inverting buck-boost power stage (Rev. A) 28 Aug 2017
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) 08 Jan 2014
Application note Minimizing Ringing at the Switch Node of a Boost Converter 15 Sep 2006

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