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
Description
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.
* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.
Inventory
Reported Distributor Inventory as of 10:10 AM GMT, 22 Nov 2009
** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.
* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.
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