TPS61325 1.5A/4.1A Multiple LED Camera Flash Driver with I2C Compatible Interface | TI.com

TPS61325 (ACTIVE) 1.5A/4.1A Multiple LED Camera Flash Driver with I2C Compatible Interface

 

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.

Features

  • 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)

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Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) LED (#) Iout (Max) (A) Iq (Typ) (mA) Features Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
TPS61325 Order now 2.5     5.5     3     1.5     0.59     I2C Control     -40 to 85     DSBGA | 20     See datasheet (DSBGA)    
TPS61050 Order now 2.5     6     1     1.2     8.5     Load Disconnect During Shutdown     -40 to 85     DSBGA | 12
VSON | 10    
See datasheet (DSBGA)
10VSON: 9 mm2: 3 x 3 (VSON | 10)    
TPS61052 Samples not available 2.5     6     1     1.2     8.5     Load Disconnect During Shutdown     -40 to 85     DSBGA | 12
VSON | 10    
See datasheet (DSBGA)
10VSON: 9 mm2: 3 x 3 (VSON | 10)    
TPS61310 Order now 2.5     5.5     3     1.5     0.59     I2C Control     -40 to 85     DSBGA | 20     See datasheet (DSBGA)    
TPS61311 Order now 2.5     5.5     3     1.5     0.59     Over Current Protection
OVP
Synchronous Rectification    
-40 to 85     DSBGA | 20     See datasheet (DSBGA)