TPS60230 Series

5-channel, current-regulated 125-mA charge pump for white LED backlight in 3x3 QFN

Catalog

5-channel, current-regulated 125-mA charge pump for white LED backlight in 3x3 QFN

Part	Package / Case	Mounting Type	Dimming	Type	Applications	Number of Outputs	Frequency	Voltage - Output	Supplier Device Package	Topology	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply (Max) [Max]	Current - Output / Channel [custom]	Outputs and Type	Outputs and Type	Current - Output / Channel [custom]	Utilized IC / Part	Features	Voltage - Input [Max]	Voltage - Input [Min]	Supplied Contents
Texas Instruments TPS60230RGTR	16-VFQFN Exposed Pad	Surface Mount	PWM	DC DC Regulator	Backlight	5	1 MHz	5.5 V	16-VQFN (3x3)	Switched Capacitor (Charge Pump)	85 °C	-40 °C	6.5 V	25 mA
Texas Instruments TPS60230RGTT	16-VFQFN Exposed Pad	Surface Mount	PWM	DC DC Regulator	Backlight	5	1 MHz	5.5 V	16-VQFN (3x3)	Switched Capacitor (Charge Pump)	85 °C	-40 °C	6.5 V	25 mA
Texas Instruments TPS60230EVM-047															Non-Isolated	5	20 mA	TPS60230	Dimmable	6 V	2.7 V	Board(s)
Texas Instruments TPS60230RGTTG4	16-VFQFN Exposed Pad	Surface Mount	PWM	DC DC Regulator	Backlight	5	1 MHz	5.5 V	16-VQFN (3x3)	Switched Capacitor (Charge Pump)	85 °C	-40 °C	6.5 V	25 mA

Catalog

5-channel, current-regulated 125-mA charge pump for white LED backlight in 3x3 QFN

Key Features

• Regulated Output Current With 0.3% Matching Over TemperatureDrives up to 5 LEDs at 25 mA EachLED Brightness Control Through PWM Control SignalHigh Efficiency by Fractional Conversion With 1x and 1.5x Modes1 MHz Switching Frequency2.7 V to 6.5 V Operating Input Voltage RangeInternal Softstart Limits Inrush CurrentLow Input Ripple and Low EMIOvercurrent and Overtemperature ProtectedUndervoltage Lockout With HysteresisUltra-Small 3mm × 3mm QFN PackageAPPLICATIONSWhite LED Backlight for Color Displays in Cellular Phones, Smart Phones, PDAs, Handheld PCs, Digital Cameras, and CamcordersKey BacklightRegulated Output Current With 0.3% Matching Over TemperatureDrives up to 5 LEDs at 25 mA EachLED Brightness Control Through PWM Control SignalHigh Efficiency by Fractional Conversion With 1x and 1.5x Modes1 MHz Switching Frequency2.7 V to 6.5 V Operating Input Voltage RangeInternal Softstart Limits Inrush CurrentLow Input Ripple and Low EMIOvercurrent and Overtemperature ProtectedUndervoltage Lockout With HysteresisUltra-Small 3mm × 3mm QFN PackageAPPLICATIONSWhite LED Backlight for Color Displays in Cellular Phones, Smart Phones, PDAs, Handheld PCs, Digital Cameras, and CamcordersKey Backlight

Description

The TPS60230 charge pump is optimized for white LED supplies in backlit color display applications. The device provides a constant current, set by an external resistor, for each LED. The supply voltage ranges from 2.7 V to 6.5 V and is ideally suited for all applications powered by a single LI-Ion battery cell or three to four NiCd, NiMH, or Alkaline battery cells. The TPS60230 provides up to 25 mA per LED, for a total of 125 mA, for input voltages ranging from 3.1 V to 6.5 V. High efficiency is achieved by utilizing a 1x/1.5x fractional conversion technique in combi- nation with very low dropout current sources. Additionally, the current controlled charge pump ensures low input current ripple and EMI. Only two external 1 µF and two 0.47 µF capacitors are required to build a complete small and low cost power supply solution. The TP60230 switches at 1 MHz operating frequency and is available in a small 16-pin QFN (RGT) package to keep board space to a minimum. The TPS60230 charge pump is optimized for white LED supplies in backlit color display applications. The device provides a constant current, set by an external resistor, for each LED. The supply voltage ranges from 2.7 V to 6.5 V and is ideally suited for all applications powered by a single LI-Ion battery cell or three to four NiCd, NiMH, or Alkaline battery cells. The TPS60230 provides up to 25 mA per LED, for a total of 125 mA, for input voltages ranging from 3.1 V to 6.5 V. High efficiency is achieved by utilizing a 1x/1.5x fractional conversion technique in combi- nation with very low dropout current sources. Additionally, the current controlled charge pump ensures low input current ripple and EMI. Only two external 1 µF and two 0.47 µF capacitors are required to build a complete small and low cost power supply solution. The TP60230 switches at 1 MHz operating frequency and is available in a small 16-pin QFN (RGT) package to keep board space to a minimum.