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SP7683

Features: 2.7V to 5.5V Input Voltage Range Up to 4 LEDS with matching currents LEDs can be Driven from the Charge Pump Output 1X and 1.5X Mode Charge Pump High Efficiency Operation 1.2 MHz Switching Frequency Programable LED Drive Capabliity PWM Dimming Control Low 0.5µA Shutdown Current So...

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SeekIC No. : 004500684 Detail

SP7683: Features: 2.7V to 5.5V Input Voltage Range Up to 4 LEDS with matching currents LEDs can be Driven from the Charge Pump Output 1X and 1.5X Mode Charge Pump High Efficiency Operation 1.2 MHz Switchin...

SP7683 Data Sheet

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Part Number:
SP7683
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/12/24

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Product Details

Description



Features:

2.7V to 5.5V Input Voltage Range
Up to 4 LEDS with matching currents
LEDs can be Driven from the Charge Pump Output
1X and 1.5X Mode Charge Pump
High Efficiency Operation
1.2 MHz Switching Frequency
Programable LED Drive Capabliity
PWM Dimming Control
Low 0.5µA Shutdown Current
Soft-Start Limits Inrush Current
Output Overvoltage Protection
Thermal Shutdown Protection
QFN (4mm x 4mm) package


Application

Smart Phones
Cell Phones
PDA's
Digital Cameras
MP3 Players
Other Portables


Pinout

Connection Diagram


Specifications

ISET Voltage to GND.....................................................0.5V
IN, OUT, EN1, EN2 to GND..................................-0.3V to 6V
SET, LED1, LED2, LED3, LED4 to GND -0.3V to IN+0.3V
C1N, C2N to GND............................................-0.3 to IN+1V
C1P, C2P to GND - 0.3V to greater than IN+1 or OUT+1V
OUT Short Circuit to GND.....................................Continious
Storage Temperature ................................-65°C to 150°C
Operating Temperature..............................-40°C to +85°C
Lead Temperature (Soldering, 10 sec)......................300°C


Description

The SP7683 is high efficiency Charge Pump which regulates up to four white LEDs with matching current. Based on the supply headroom available for the four precision current sinks, SP7683 automatically switches between 1X and 1.5X modes. The part powers up in 1X mode, with low quiescent current of 70uA (typ) and remains in 1X mode as long as the LED current has not decreased by more than 0.5%. If the current decreases, then it switches into 1.5X mode where it regulates the lowest of the LED cathode voltages to 0.1V. Other features include soft-start, over current protection, overvoltage protection and thermal shutdown at 140°C. Offered in 4X4 16 pin QFN.




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