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TPS61325YFFR
1.5A/4.1A Multiple LED Camera Flash Driver with I2C Compatible Interface
VOUT
AVIN
LED1
2.2mHI2C I/F
TPS61325
LED2 D22.5V..5.5V
HC_SEL
BAL
10mF
-CA
4.7mF
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TPS61325, TPS61326SLVS977B –FEBRUARY 2010–REVISED JULY 2016
TPS6132x 1.5-Ato 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 Mbps Dual Wire Camera Module Interface Zero Latency Tx-Masking Input LED Temperature Monitoring Privacy Indicator LED Output Integrated LED Safety Timer GPIO/Flash Ready Output 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
DescriptionThe TPS6132x deviceis based ona high-frequency
synchronous boost topology with constant current
sinksto driveupto three white LEDsin parallel (445-
mA, 890-mA, 445-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 TPS6132x 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 DC-light and flashlight synchronization
with the camera module, the device offers a
dedicated control interface (STRB0 and STRB1 pins)
for zero latency LED turnon time.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Application Schematic
