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TPS61301 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce TPS61301
Description  1.5A/4.1A Multiple LED Camera Flash Driver With I2CTM Compatible Interface
Download  77 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS61301 Fiches technique(HTML) 1 Page - Texas Instruments

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VOUT
AVIN
SW
C
I
SW
LED1
C
O
10 mF
PGND
PGND
AGND
L
2.2 H
m
SDA
SCL
TPS61300
LED2
LED3
D2
2.5 V..5.5 V
ENDCL
FLASH_SYNC
Tx- MASK
GPIO/PG
ENVM
INDLED
Privacy
Indicator
CAMERA ENGINE
I2CI/F
HC_SEL
BAL
FLASHREADY
PHONEPOWERON
1.8 V
D1
TPS61300
TPS61301
TPS61305, TPS61305A
www.ti.com
SLVS957D – JUNE 2009 – REVISED OCTOBER 2012
1.5A/4.1A Multiple LED Camera Flash Driver With I2CTM Compatible Interface
Check for Samples: TPS61300, TPS61301, TPS61305, TPS61305A
1
FEATURES
DESCRIPTION
The TPS6130x device is based on a high-frequency
23
Four Operational Modes
synchronous boost topology with constant current
DC Light and Flashlight
sinks to drive up to three white LEDs in parallel
Voltage Regulated Converter: 3.8V...5.7V
(400mA/800mA/400mA maximum flash current). The
extended high-current mode (HC_SEL) allows up
Standby: 2
μA (typ.)
to 1025mA/2050mA/1025mA flash current out of
Storage Capacitor Friendly Solution
the storage capacitor.
Automatic VF and ESR Calibration
The high-capacity storage capacitor on the output of
Power-Save Mode for Improved Efficiency at
the boost regulator provides the high-peak flash LED
Low Output Power, Up to 95% Efficiency
current, thereby reducing the peak current demand
Output Voltage Remains Regulated When
from the battery to a minimum.
Input Voltage Exceeds Nominal Output Voltage
The 2-MHz switching frequency allows the use of
I2C Compatible Interface up to 3.4Mbits/s
small and low profile 2.2
μH inductors. To optimize
overall efficiency, the device operates with a 400mV
Zero Latency Tx-Masking Input
LED feedback voltage.
Hardware Voltage Mode Selection Input
(TPS61300, TPS61301)
The TPS6130x device not only operates as a
regulated current source, but also as a standard
DC Light Mode Selection Input
voltage boost regulator. The device keeps the output
(TPS61300, TPS61306)
voltage regulated even when the input voltage
Hardware Reset Input (TPS61301, TPS61305)
exceeds the nominal output voltage. The device
LED Temperature Monitoring (TPS61305)
enters power-save mode operation at light load
currents to maintain high efficiency over the entire
Privacy Indicator LED Output
load current range.
Integrated LED Safety Timer
To simplify flashlight synchronization with the camera
Total Solution Size of Less Than 25 mm2
module,
the
device
offers
a
trigger
pin
(<1mm height)
(FLASH_SYNC) for zero latency LED turn-on time.
Available in a 20-Pin NanoFree™ (CSP)
APPLICATIONS
Single/Dual/Triple White LED Flashlight Supply
for Cell Phones and Smart-Phones
LED Based Xenon "Killer" Flashlight
Audio Amplifier Power Supply
Figure 1. Typical Application
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
NanoFree is a trademark of Texas Instruments.
3
I2C is a trademark of NXP Semiconductors.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009–2012, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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