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TPS61325

現行

具 I2C 相容介面的 1.5A/4.1A 多 LED 攝影機閃光燈驅動器

立即訂購
產品規格表

TPS61325

現行
產品規格表 立即訂購

產品詳細資料

Input voltage type DC/DC Topology Boost, current mode Vin (min) (V) 2.5 Vin (max) (V) 5.5 Vout (max) (V) 5.5 Vout (min) (V) 2.5 Iout (max) (A) 1.5 Iq (typ) (mA) 0.59 Features I2C control Operating temperature range (°C) -40 to 85 Dimming method Analog, PWM Number of channels 3 Rating Catalog
Input voltage type DC/DC Topology Boost, current mode Vin (min) (V) 2.5 Vin (max) (V) 5.5 Vout (max) (V) 5.5 Vout (min) (V) 2.5 Iout (max) (A) 1.5 Iq (typ) (mA) 0.59 Features I2C control Operating temperature range (°C) -40 to 85 Dimming method Analog, PWM Number of channels 3 Rating Catalog
DSBGA (YFF) 20 3.96 mm² 1.8 x 2.2
  • 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)

All trademarks are the property of their respective owners.

  • 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)

All trademarks are the property of their respective owners.

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.

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.
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類型 標題 日期
* Data sheet TPS6132x 1.5-A to 4.1-A Multiple LED Camera Flash Driver With I2C Compatible Interface datasheet (Rev. B) PDF | HTML 2016年 7月 13日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 2011年 9月 19日

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