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TPS61326 Datasheet Preview

TPS61326 Datasheet

1.5-A to 4.1-A Multiple LED Camera Flash Driver

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TPS61325, TPS61326
SLVS977B – FEBRUARY 2010 – REVISED JULY 2016
TPS6132x 1.5-A to 4.1-A Multiple LED Camera Flash Driver With I2C Compatible Interface
1 Features
1 Four Operational Modes
– DC-Light and Flashlight
– Voltage Regulated Converter: 3.8 V to 5.7 V
– Standby: 2 μA (Typical)
• Storage Capacitor Friendly Solution
• Automatic VF and ESR Calibration
• Power-Save Mode for Improved Efficiency at Low
Output Power, Up to 95% Efficiency
• Output Voltage Remains Regulated When Input
Voltage Exceeds Nominal Output Voltage
• I2C Compatible Interface up to 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 Size of Less Than 25 mm2 (< 1-mm
height)
• Available in a 20-Pin NanoFree™ (DSBGA)
2 Applications
• Single, Dual, or Triple White LED Flashlight
Supply for Cell Phones and Smart-Phones
• LED Based Xenon Killer Flashlight
3 Description
The TPS6132x device is based on a high-frequency
synchronous boost topology with constant current
sinks to drive up to three white LEDs in parallel (445-
mA, 890-mA, 445-mA maximum flash current). The
extended high-current mode (HC_SEL) allows up to
1025-mA, 2050-mA, and 1025-mA flash current out of
the storage capacitor.
The high-capacity storage capacitor on the output of
the boost regulator provides the high-peak flash LED
current, thereby reducing the peak current demand
from the battery to a minimum.
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 400-mV
LED feedback voltage.
The TPS6132x device not only operates as a
regulated current source, but also as a 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
currents to maintain high efficiency over the entire
load current range.
To 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)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS6132x
DSBGA (20)
2.20 mm × 1.96 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
2.5 V..5.5 V
CI
4.7 mF
L
2.2 mH
TPS61325
SW
SW
AVIN
HC_SEL
VOUT
BAL
CO
10mF D1
D2
PHONE POWER ON
I2C I/F
NTC
STRB0
STRB1
SCL
SDA
Tx-MASK
TS
AGND
LED1
LED2
LED3
INDLED
1.8 V
GPIO/PG
PGND
PGND
Privacy
Indicator
FLASH READY
Copyright © 2016, Texas Instruments Incorporated
1
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

TPS61326 Datasheet Preview

TPS61326 Datasheet

1.5-A to 4.1-A Multiple LED Camera Flash Driver

No Preview Available !

TPS61325, TPS61326
SLVS977B – FEBRUARY 2010 – REVISED JULY 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....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 5
7.6 Timing Requirements ................................................ 7
7.7 Typical Characteristics .............................................. 9
8 Parameter Measurement Information ................ 16
9 Detailed Description ............................................ 17
9.1 Overview ................................................................. 17
9.2 Functional Block Diagram ....................................... 18
9.3 Feature Description................................................. 19
9.4 Device Functional Modes........................................ 30
9.5 Programming........................................................... 35
9.6 Register Maps ......................................................... 36
10 Application and Implementation........................ 45
10.1 Application Information.......................................... 45
10.2 Typical Applications .............................................. 45
11 Power Supply Recommendations ..................... 54
12 Layout................................................................... 55
12.1 Layout Guidelines ................................................. 55
12.2 Layout Example .................................................... 55
12.3 Thermal Considerations ........................................ 55
13 Device and Documentation Support ................. 57
13.1 Device Support...................................................... 57
13.2 Documentation Support ........................................ 57
13.3 Receiving Notification of Documentation Updates 57
13.4 Community Resources.......................................... 57
13.5 Trademarks ........................................................... 57
13.6 Electrostatic Discharge Caution ............................ 57
13.7 Glossary ................................................................ 57
14 Mechanical, Packaging, and Orderable
Information ........................................................... 57
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (October 2010) to Revision B
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section .................................................................................................. 1
• Changed Ordering Information Table to Device Comparison Table; see POA at the end of the datasheet ......................... 1
Changes from Original (February 2010) to Revision A
Page
• Added TPS61326 device as Product Preview........................................................................................................................ 3
• Changed ISTBY specification, max value from 5 µA to 12 µA.................................................................................................. 5
• Changed VDO specification, max. value from 200 mV to 250 mV for Test Condition IOUT = –15.8 mA, TJ = 25°C,
device not switching. .............................................................................................................................................................. 6
2
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Product Folder Links: TPS61325
Copyright © 2010–2016, Texas Instruments Incorporated


Part Number TPS61326
Description 1.5-A to 4.1-A Multiple LED Camera Flash Driver
Maker etcTI
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