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TS19371CX6RF bảng dữ liệu(PDF) 1 Page - Taiwan Semiconductor Company, Ltd

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Giải thích chi tiết về linh kiện  Boost (Step-up) WLED Driver with OVP
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nhà sản xuất  TSC [Taiwan Semiconductor Company, Ltd]
Trang chủ  http://www.taiwansemi.com
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TS19371
Boost (Step-up) WLED Driver with OVP
1/10
Version: G08
SOT-26
SOP-8
General Description
The TS19371 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The
device can drive up to 126 LEDs (9S14P) from a 12V supply. The output capacitor can be as small as 4.7µF,
saving space versus alternative solutions. A low 95mV feedback voltage minimizes power loss for better
efficiency. Additional feature include over output voltage limiting (SOT-26 package) when LEDs are disconnected.
The TS19371 switches at a fixed frequency of 1.2MHz, allowing the use of tiny, low profile inductors and
capacitors to minimize footprint and cost in space consideration applications for cellular phone backlighting or
other hand held equipment.
Features
Inherently Matched LED Current
High Efficiency: 89% Typical
Drives Up to 9 LEDs Series @ Vin 9~15V
Drives Up to 126 LEDs (9S14P) @ Vin 12~15V
Drives Up to 6 (1W) LEDs Series @ Vin 12V
Over Output Voltage Protection 30V (SOT-26)
Fast 1.2MHz Switching Frequency
Requires Only 4.7µF Output Capacitor
PWM dimming control 1KHz to 10KHz
Analog dimming control
Ordering Information
Part No.
Package
Packing
TS19371CX6 RF
SOT-26
3Kpcs / 7” Reel
TS19371CS RL
SOP-8
2.5Kpcs / 13” Reel
Input Voltage vs. Efficiency
Application
Cellular Phones
Portable Electronics Devices PDA, GPS
LCD Display Module
White LED Backlighting
MR-16 lighting
Typical Application Circuit
Pin Definition:
1. SW
6. VIN
2. GND
5. OVP
3. FB
4. CTRL
Pin Definition:
1. VIN
8. SW
2. GND
7. GND
3. GND
6. GND
4. CTRL
5. FB


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