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TPS61252DSGTTIN/a25avai3.5MHz, 1.5A, 92% Efficient Boost Converter with Adjustable Input Current Limit 8-WSON


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TPS61252DSGT
3.5MHz, 1.5A, 92% Efficient Boost Converter with Adjustable Input Current Limit
1 MΩ
10 µF
22 µF
OUT
VIN
ILIM
GND
VOUT
100 pFVIN
243 kΩμH
768 kΩ
VOUTTPS61252
Power Good
2.3 V to 6.0 V
5.0 V
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TPS61252

SLVSAG3A –SEPTEMBER 2010–REVISED DECEMBER 2014
TPS61252 Tiny 1.5-A Boost Converter With Adjustable Input Current Limit Features 3 Description

The TPS61252 device providesa power supply Resistor Programmable Input Current Limit solution for products powered by eithera three-cell– ±20% Current Accuracyat 500 mA over Full alkaline, NiCdor NiMH battery,or an one-cell Li-IonTemperature Range or Li-polymer battery. The wide input voltage rangeis Programmable from 100 mAupto 1500 mA ideal to power portable applications like mobile
phonesor computer peripherals. The device hasa• Upto 92% Efficiency resistor programmable (RILIM) input current limit and• VIN Range from 2.3Vto 6.0V is suitable fora wide varietyof applications.• Power Good Indicates Appropriate Output Voltage During light loads, the device automatically entersLevel skip mode (PFM), which allows the converter to• Adjustable Output Voltageupto 6.5V maintain the required output voltage, while only 100% Duty-Cycle Mode When VIN> VOUT drawing 30 μA quiescent current from the battery.
This allows maximum efficiencyat lowest quiescent• Load Disconnect and Reverse Current Protection currents.• Short Circuit Protection
TPS61252 allows the use of small inductors and• Typical Operating Frequency 3.25 MHz capacitors to achievea small solution size. The• Availableina 2-mm× 2-mm WSON-8 Package possibilityto reduce the current limit bya external
resistor offers the potential useof physically even2 Applications smaller inductors with lower rated currentsto further
reduce total solution sizes of the power supply.• USB Host Supplies froma Single Li-Ion Battery During shutdown, the loadis completely disconnected• Current Limited Applications from the battery. The TPS61252is availableina8-• Li-Ion Applications pin WSON package measuring2 mm×2 mm (DSG). Audio Applications
Device Information(1)
• RF-PA Buffer
(1) Forall available packages, see the orderable addendumat
the endofthe datasheet. Typical Application Schematic
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