The TPS60250/2 are high efficiency, constant frequency charge pump DC/DC converters that use dual mode 1× and 1.5× conversions to maximize efficiency over the input voltage range. The devices drive up to five white LEDs for the main display and up to two white LEDs for the sub display with regulated constant current for uniform intensity. By utilizing adaptive 1×/1.5× charge pump modes and very low-dropout current regulators, the TPS60250/2 achieve high efficiency over the full 1-cell lithium-battery input voltage range.

Four enable inputs, ENmain, ENsub1, ENsub2, and ENaux, available through the I²C, are used for simple on/off controls for the independent main, sub1, sub2, and DM5 displays, respectively. To lower the operating current when using one sub display LED, the devices provide completely separate operation for the sub display LEDs.

The TPS60250/2 are available in a 16-pin 3mm x 3mm thin QFN.

• 3.0 V to 6.0 V Input Voltage Range
• ×1 and ×1.5 Charge Pump
• Fully Programmable Current with I2C
  • 64 Dimming Steps with 25mA Maximum (Sub and Main Display Banks)
  • 4 Dimming Steps with 80mA Maximum (DM5 for Auxiliary Application)
• 2% Current Matching for Sub LEDs at Light Load Condition (Each 100μA)
• 750 kHz Charge Pump Frequency
• Continuous 230mA Maximum Output Current
• Auto Switching Between ×1 and ×1.5 Mode for Maximum Efficiency
• Built-in Soft Start and Current Limit
• Open Lamp Detection
• 16-Pin 3mm x 3mm QFN
• TPS60250 (I2C Slave Address: 1110111)
• TPS60252 (I2C Slave Address: 1110110)
• APPLICATIONS
  • Cellular Phones
  • PDA, PMP, GPS (Up To 4 Inch LCD Display)
  • Multidisplay Handheld Devices

• Number of channels (#)
• 7
• Vin (Min) (V)
• 3
• Vin (Max) (V)
• 6
• Vout (Min) (V)
• 2.7
• Vout (Max) (V)
• 6.5
• Type
• Capacitive
• Switching frequency (Max) (kHz)
• 875
• LED current per channel (mA)
• 25
• Peak efficiency (%)
• 93
• Topology
• Boost
• Features
• Analog Dimming, Enable/Shutdown, I2C Control, Integrated Switch, Load Disconnect During Shutdown, OVP, Soft Start, Synchronous Rectification
• Operating temperature range (C)
• -40 to 85

TPS60250的完整型号有：TPS60250RTER、TPS60250RTET，以下是这些产品的关键参数及官网采购报价：

TPS60250RTER，工作温度：-40 to 85，封装：WQFN (RTE)-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TPS60250RTER的批量USD价格：.739（1000+）

TPS60250RTET，工作温度：-40 to 85，封装：WQFN (RTE)-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TPS60250RTET的批量USD价格：.887（1000+）

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The TPS60250EVM-185 is an evaluation module for the TPS60250 high efficiency charge pump DC/DC converter for WLED drivers. The TPS60250 uses a dual mode load switch 1X and 1.5X conversion to maximize efficiency. It drives up to five white LEDs in the main display and up to two white LEDs with (...)

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