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.

• Regulated Output Current With 0.3% Matching Over Temperature
• Drives up to 5 LEDs at 25 mA Each
• LED Brightness Control Through PWM Control Signal
• High Efficiency by Fractional Conversion With 1x and 1.5x Modes
• 1 MHz Switching Frequency
• 2.7 V to 6.5 V Operating Input Voltage Range
• Internal Softstart Limits Inrush Current
• Low Input Ripple and Low EMI
• Overcurrent and Overtemperature Protected
• Undervoltage Lockout With Hysteresis
• Ultra-Small 3mm × 3mm QFN Package
• APPLICATIONS
  • White LED Backlight for Color Displays in Cellular Phones, Smart Phones, PDAs, Handheld PCs, Digital Cameras, and Camcorders
  • Key Backlight

• Number of channels (#)
• 5
• Vin (Min) (V)
• 2.7
• Vin (Max) (V)
• 6.5
• Vout (Min) (V)
• 2.7
• Vout (Max) (V)
• 6.5
• Type
• Capacitive
• Switching frequency (Max) (kHz)
• 1250
• LED current per channel (mA)
• 25
• Peak efficiency (%)
• 90
• Topology
• Boost
• Features
• Analog Dimming, Analog/PWM Mixed Dimming, Direct PWM Dimming, Enable/Shutdown, Fault Detection, Integrated Switch, Load Disconnect During Shutdown, Soft Start, Synchronous Rectification, Thermal Shutdown
• Operating temperature range (C)
• -40 to 85

TPS60230的完整型号有：TPS60230RGTR、TPS60230RGTT，以下是这些产品的关键参数及官网采购报价：

TPS60230RGTR，工作温度：-40 to 85，封装：VQFN (RGT)-16，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS60230RGTR的批量USD价格：.399（1000+）

TPS60230RGTT，工作温度：-40 to 85，封装：VQFN (RGT)-16，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS60230RGTT的批量USD价格：.479（1000+）

TPS60230EVM-047 TPS60230EVM-047 评估

The Texas Instruments TPS60230EVM-047 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS60230. The TPS60230 is an efficient charge-pump-based current sink that can drive up to five white LEDs with 25mA each.

The EVM is specifically designed and optimized to (...)

TPS60231EVM-047 TPS60231 评估模块

The Texas Instruments TPS60231EVM-047 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS60231. The TPS60231 is an efficient charge-pump-based current sink that can drive up to three white LEDs with 25mA each.

The EVM is specifically designed and optimized to (...)

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