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TPS61305YFFR-TPS61305YFFT
1.5A/4.1A Multiple LED Camera Flash Driver With I2CTM Compatible Interface and LED Temp Monitoring
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TPS61300, TPS61301
TPS61305, TPS61305A, TPS61306SLVS957E–JUNE 2009–REVISED APRIL 2016
TPS6130xx 1.5-A and 4.1-A Multiple LED Camera Flash Driver WithI2C Compatible
Interface Features Four Operational Modes DC Light and Flashlight Voltage Regulated Converter: 3.8Vto 5.7V Standby:2 μA (Typical) Storage Capacitor Friendly Solution AutomaticVF and ESR Calibration Power-Save Mode for Improved Efficiencyat Low
Output Power, Upto 95% Efficiency Output Voltage Remains Regulated When Input
Voltage Exceeds Nominal Output VoltageI2C Compatible Interfaceupto 3.4 Mbits/s Zero Latency Tx-Masking Input Hardware Voltage Mode Selection Input
(TPS61300, TPS61301) DC Light Mode Selection Input
(TPS61300, TPS61306) Hardware Reset Input (TPS61301, TPS61305) LED Temperature Monitoring (TPS61305) Privacy Indicator LED Output Integrated LED Safety Timer Total Solution Sizeof Less Than 25 mm2(<1 mm
height) Availableina 20-Pin NanoFree™ (DSBGA)
Applications Single, Dual,or Triple White LED Flashlight
Supply for Cell Phones and Smart-Phones LED Based Xenon Killer Flashlight Audio Amplifier Power Supply
DescriptionThe TPS6130xx deviceis basedona high-frequency
synchronous boost topology with constant current
sinks to drive up to three white LEDsin parallel
(400‑mA, 800-mA, and 400-mA maximum flash
current). The extended high-current mode (HC_SEL)
allows upto 1025-mA, 2050-mA, and 1025-mA flash
current outof the storage capacitor.
The high-capacity storage capacitor on the outputof
the boost regulator provides the high-peak flash LED
current, thereby reducing the peak current demand
from the batterytoa minimum.
The 2-MHz switching frequency allows the useof
small and low profile 2.2-μH inductors. To optimize
overall efficiency, the device operates witha 400-mV
LED feedback voltage.
The TPS6130xx device not only operates asa
regulated current source, but also asa standard
voltage boost regulator. The device keeps the output
voltage regulated even when the input voltage
exceeds the nominal output voltage. The device
enters power-save mode operation at light load
currentsto maintain high efficiency over the entire
load current range. simplify flashlight synchronization with the camera
module, the device offers a trigger pin
(FLASH_SYNC)for zero latency LED turnon time.
Table1. Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Figure1. Simplified Schematic
