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Product details

Parameters

Display type AMOLED IC integration AMOLED bias Vin (Min) (V) 2.9 Vin (Max) (V) 4.5 Source driver voltage (Min) (V) 7.7 Source driver voltage (Max) (V) 7.7 Level shifter/scan driver (ch) 0 V_POS (Min) (V) 4.6 V_POS (Max) (V) 4.6 V_NEG (Min) (V) -4 V_NEG (Max) (V) -4 Special function Digital control interface Topology Boost, Buck-Boost Rating Catalog open-in-new Find other LCD & OLED display power & drivers

Package | Pins | Size

WQFN (RTE) 16 9 mm² 3 x 3 open-in-new Find other LCD & OLED display power & drivers

Features

  • 2.9V to 4.5V Input Voltage Range
  • Fixed 4.6V VPOS Output Voltage
  • 0.5% Accuracy VPOS at 25°C to Approximately 85ºC
  • External Output Sense Pin for VPOS
  • Excellent Line Transient Regulation
  • Digitally Programmable VNEG, –1.4V to –5.4V
  • - 4V Default Value for VNEG
  • TPS65632 Selectable AVDD, 5.8V and 7.7V TPS65632A Fixed AVDD 7.7V
  • 300mA Output Current for VPOS and VNEG
  • Short Circuit Protection
  • Thermal Shutdown
  • 3 x 3mm 16 pin QFN package
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Description

The TPS65632A is designed to drive AMOLED displays (Active Matrix Organic Light Emitting Diode) requiring three supply rails, VPOS, VNEG and AVDD. The device integrates a boost converter for VPOS, an inverting buck boost converter for VNEG and a boost converter for AVDD which are suitable for battery operated products. The digital control pin (CTRL) allows programming the negative output voltage in digital steps. The TPS65632A uses a novel technology enabling excellent line and load regulation.

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Similar but not functionally equivalent to the compared device:
TPS65631 ACTIVE Dual Outputs AMOLED Display Power Supply This product does not integrate the AVDD rail and the minimum for Vneg goes down to -4.4V instead of -5.4V.

Technical documentation

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Type Title Date
* Data sheet TPS65632A Features List datasheet Aug. 07, 2012
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) Sep. 19, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note Basic calculation of an inverting buck-boost power stage (Rev. A) Aug. 28, 2017
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) Jan. 08, 2014
Application note Minimizing Ringing at the Switch Node of a Boost Converter Sep. 15, 2006

Design & development

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CAD/CAE symbols

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WQFN (RTE) 16 View options

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