STCF05

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HIGH POWER WHITE LED DRIVER WITH I2C INTERFACE

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Product overview

Description

The STCF05 is a high efficiency power supply solution to drive multiple flash LEDs in camera phones, PDAs and other hand-held devices. The synchronous boost topology with output current control guarantees the proper LED current over all possible conditions of battery level and LED forward voltage. All the functions of the device are controlled through the I²C bus that allows to reduce logic pins on the package and to save PCB traces on the board. Hard and soft-triggering of the flash are both supported. The device includes many functions to protect the chip and the power LEDs. These comprehend a soft-start control, chip over temperature detection and protection, open and shorted LEDs detection and protection. In addition, a digital programmable time-out function protects the LEDs in case of wrong command from microprocessor. See description (continued).
  • All features

    • Boost DC-DC converter with synchronous rectification
    • Drives 2 power white LEDs in series with a current up to 400 mA
    • Input voltage range 2.5 V to 5.5 V
    • Needs 3 external components only
    • Output current control
    • 1.8 MHz fixed frequency PWM control
    • Peak inductor current limited to 3 A
    • Full I²C control
    • Operational modes:
      • Standby mode
      • Standby mode with NTC
      • Flash mode: up to 400 mA
      • Torch mode: up to 120 mA
    • Soft and hard triggering of flash
    • Flash and Torch dimming in 15 exponential steps
    • Dimmable red LED indicator auxiliary output
    • Internally or externally timed flash operation
    • Digitally programmable safety time-out in flash mode
    • LED overtemperature detection and protection with external NTC resistor
    • Open and shorted LED failure detection and protection
    • Chip overtemperature detection and protection
    • Less than 1 μA standby current
    • Package 3 x 3 mm TFBGA25

Circuit Diagram

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Related Applications

Personal Electronics

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STMicroelectronics - STCF05

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STCF05TBR
Active
uTFBGA 25 3x3x1.1 Industrial Ecopack1

STCF05TBR

Package:

uTFBGA 25 3x3x1.1

Material Declaration**:

Marketing Status

Active

Package

uTFBGA 25 3x3x1.1

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
STCF05TBR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel uTFBGA 25 3x3x1.1 -40 85 MALAYSIA

STCF05TBR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

uTFBGA 25 3x3x1.1

Operating Temperature (°C)

(min)

-40

(max)

85

Budgetary Price (US$)* / Qty

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors