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TPS61311 Datasheet Preview

TPS61311 Datasheet

1.5-A Multiple LED Camera Flash and Video Light Driver

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TPS61310, TPS61311
SLVS978D – MARCH 2010 – REVISED SEPTEMBER 2016
TPS6131x 1.5-A Multiple LED Camera Flash and Video Light Driver
With I2C Compatible Interface
1 Features
1 Operational Modes:
– Video Light and Flash Strobe
– Voltage Regulated Converter: 3.8 V to 5.7 V
With Down Mode
– Standby: 2 µA (Typical)
• LED VF Measurement
• Power-Save Mode for Improved Efficiency at Low
Output Power, Up to 95% Efficiency
• I2C Compatible Interface up to 3.4 Mbps
• Dual Wire Camera Module Interface
• Zero Latency Tx-Masking Input
• Hardware Reset Input
• Privacy Indicator LED Output
• GPIO and Power Good Output
• Various Safe Operation and Robust Handling
Features:
– LED Temperature Monitoring
– Open and Shorted LED Detection and
Protection
– Integrated LED Safety Timer
– Automatic Battery Voltage Droop Monitoring
and Protection
– Smooth LED Current Ramp-Up and Ramp-
Down
– Undervoltage Lockout
• Total Solution Size of Less Than 25 mm2
• Available in a 20-Pin NanoFree™ DSBGA
Package
3 Description
The TPS6131x family is an integrated solution with a
wide feature set for driving up to three LEDs for still-
camera flash strobe and video-camera lighting
applications. It is based on a high efficiency
synchronous boost topology with combinable current
sinks to drive up to three white LEDs in parallel. The
2-MHz switching frequency allows the use of small
and low-profile 2.2-µH inductors. To optimize overall
efficiency, the device operates with a low LED-
feedback voltage and regulated output-voltage
adaptation.
The device integrates a control scheme that
automatically optimizes the LED current flash budget
as a function of the battery voltage condition.
The TPS6131x not only operates as a regulated
current source, but also as a standard voltage boost
regulator. The device enters power-save mode
operation at light load currents to maintain high
efficiency over the entire load current range. These
operating modes can be useful to supply other high
power devices in the system (for example, a hands-
free audio PA).
To simplify video light and flash synchronization with
the camera module, the device offers a dedicated
control interface (STRB0, STRB1) for zero latency
LED turnon time.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS61310,
TPS61311
DSBGA (20)
2.20 mm × 1.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
2 Applications
• Single, Dual, or Triple White LED Flash Supply for
Cell Phones and Smart-Phones
• Video Lighting for Digital Video Applications
• General Lighting Applications
• Audio Amplifier Power Supply
1
Typical Application
2.5 V to
5.5 V
L
2.2 mH
CI
4.7 mF
SW
SW
AVIN
VOUT
CO
D1 D2
10 mF
I2C I/F
NRESET
STRB0
STRB1
LED1
LED2
LED3
SCL
SDA
INDLED
Tx-MASK
Privacy
Indicator
NTC
TS GPIO/PG
AGND
AGND
PGND
PGND
Copyright © 2016, Texas Instruments Incorporated
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

TPS61311 Datasheet Preview

TPS61311 Datasheet

1.5-A Multiple LED Camera Flash and Video Light Driver

No Preview Available !

TPS61310, TPS61311
SLVS978D – MARCH 2010 – REVISED SEPTEMBER 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 5
7.6 I2C Interface Timing Requirements........................... 7
7.7 Dissipation Ratings ................................................... 8
7.8 Typical Characteristics .............................................. 9
8 Parameter Measurement Information ................ 13
9 Detailed Description ............................................ 14
9.1 Overview ................................................................. 14
9.2 Functional Block Diagram ....................................... 15
9.3 Feature Description................................................. 16
9.4 Device Functional Modes........................................ 25
9.5 Register Maps ......................................................... 30
10 Application and Implementation........................ 38
10.1 Application Information.......................................... 38
10.2 Typical Applications .............................................. 38
11 Power Supply Recommendations ..................... 45
12 Layout................................................................... 45
12.1 Layout Guidelines ................................................. 45
12.2 Layout Example .................................................... 46
12.3 Thermal Considerations ........................................ 46
13 Device and Documentation Support ................. 48
13.1 Documentation Support ........................................ 48
13.2 Related Links ........................................................ 48
13.3 Receiving Notification of Documentation Updates 48
13.4 Community Resources.......................................... 48
13.5 Trademarks ........................................................... 48
13.6 Electrostatic Discharge Caution ............................ 48
13.7 Glossary ................................................................ 48
14 Mechanical, Packaging, and Orderable
Information ........................................................... 48
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (November 2012) to Revision D
Page
• Added Device Information table,ESD Ratings table,Recommended Operating Conditions table,Thermal Information
table,Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section........... 1
• Deleted Ordering Information table; see POA at the end of the data sheet........................................................................... 1
Changes from Revision B (September 2011) to Revision C
Page
• Added revision letter C to literature number........................................................................................................................... 1
• Added TPS61311 to ordering table ........................................................................................................................................ 3
• Added Current Limit Setting for TPS61311 .......................................................................................................................... 21
• Added current limit setting for TPS61311 in register map.................................................................................................... 34
Changes from Revision A (October 2010) to Revision B
Page
• Changed VUVLO to max value from 2.35 V to 2.4 V. ............................................................................................................... 5
• Updated LED forward voltage calibration description. ......................................................................................................... 24
• Updated SFT bit description ................................................................................................................................................. 33
2
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Copyright © 2010–2016, Texas Instruments Incorporated
Product Folder Links: TPS61310 TPS61311


Part Number TPS61311
Description 1.5-A Multiple LED Camera Flash and Video Light Driver
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