FP6773
FP6773 is 1A Buck/Boost Charge Pump LED Driver manufactured by Fiti.
Description
The FP6773 Buck/Boost charge pump LED driver is designed for powering high brightness white LEDs for camera flash applications. The FP6773 automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward voltage. The FP6773 provides two current levels for TORCH and FLASH modes. In TORCH mode, the current sense reference voltage is 50m V. The LED current can be determined by current sense resistor. In Flash mode, the current sense reference voltage can be adjusted by external resistor. The maximum LED current can be set up to 1A. The FP6773 is available in a space saving TDFN-10 3mm×3mm package.
FP6773 85T Buck/Boost
Features
- Output Current up to 1A
- Up to 94% Efficiency in Torch Mode
- Adjustable FLASH Mode Current
- Minimum External ponents: No Inductors
- Automatic Buck/Boost Mode Switchover
- Wide VIN Range: 2.7V to 5.5V
- High Frequency Operation: 2MHz
- 50m V Reference for Low Loss Sensing
- IQ < 1μA in Shutdown
- PWM Dimming Control
- Automatic Soft Start Limits Inrush Current
- Over-Voltage Protection on Output
- Over-Current Protection
- Over-Temperature Protection
- Low Ripple and EMI
- Ultra-Low Dropout Voltage in Buck Mode
- 1.6 Second Timeout in Flash Mode
- Space Saving 10-Pin DFN 3mm×3mm package
Applications
- White LED Torch/Flash for Mobile Phones, DSCs, and Camcorders
- Generic Lighting/Flash/Strobe Applications
- General Purpose High Current Boost
Pin Assignment
WD Package TDFN-10 (3mm X3mm)
VIN 1 C1 2 C2 3 FLASH 4 EN 5
10 VOUT 9 PGND 8 SGND 7 FB 6 RSET
Ordering Information
FP6773-
- -
TR: Tape / Real Blank: Tube G: Green Package Type WD: TDFN-10(3mm X3mm)
Figure 1. Pin Assignment of FP6773 (Top View)
FP6773-1.2-MAY-2011
1 http://.. fitipower integrated technology lnc.
Typical Application Circuit
VIN (3.0~4.2V)
FP6773...
