TS19371CX6 RF Taiwan Semiconductor, TS19371CX6 RF Datasheet

LED DRIVER, WHITE, BOOST, 6SOT26

TS19371CX6 RF

Manufacturer Part Number
TS19371CX6 RF
Description
LED DRIVER, WHITE, BOOST, 6SOT26
Manufacturer
Taiwan Semiconductor
Datasheet

Specifications of TS19371CX6 RF

Led Driver Application
Backlighting, Display Module
No. Of Outputs
1
Output Current
650mA
Output Voltage
36V
Input Voltage
2.5V To 18V
Dimming Control Type
PWM
Operating
RoHS Compliant
Topology
Boost
Operating Temperature Range
-40°C To +85°C
Switching Frequency
1.2MHz
Efficiency
89%
Rohs Compliant
Yes
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 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
Application
Typical Application Circuit
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
Fast 1.2MHz Switching Frequency
Requires Only 4.7µF Output Capacitor
PWM dimming control 1KHz to 10KHz
Analog dimming control
Cellular Phones
Portable Electronics Devices PDA, GPS
LCD Display Module
White LED Backlighting
SOT-26
Pin Definition:
1. SW
2. Ground
3. Feedback
6. Input
5. OVP
4. CTRL
Boost (Step-up) WLED Driver with OVP
1/8
Ordering Information
Input Voltage vs. Efficiency
TS19371CX6 RF
Part No.
Package
SOT-26
3Kpcs / 7” Reel
TS19371
Packing
Version: F08

Related parts for TS19371CX6 RF

TS19371CX6 RF Summary of contents

Page 1

... Portable Electronics Devices PDA, GPS ● LCD Display Module ● White LED Backlighting Typical Application Circuit Boost (Step-up) WLED Driver with OVP 6. Input 5. OVP 4. CTRL Ordering Information Part No. TS19371CX6 RF Input Voltage vs. Efficiency 1/8 TS19371 Package Packing SOT-26 3Kpcs / 7” Reel Version: F08 ...

Page 2

Absolute Maximum Rating Parameter Input Voltage Supply Voltage (Recommended) FB Voltage SW Voltage CTRL Voltage Ambient Temperature Range Junction Temperature Range Electrical Specifications ( Parameter Input Voltage Range Feedback Voltage FB Pin Bias Current Supply Current Switching Frequency ...

Page 3

Functional Block Pin Description Pin Function Ground 3 Feedback 4 CTRL 5 OVP 6 Input Boost (Step-up) WLED Driver with OVP Description Switching Pin. This is the collector of the internal NPN power switch. Connect to inductor ...

Page 4

Application Information Operation The TS19371 uses a constant frequency, current mode control scheme to provide excellent line and load regulation. Operation can be best understood by referring to the block diagram. At the start of each oscillator cycle, the RS ...

Page 5

Application Information (Continue) Reference Design Information – Typical Application Circuit VIN Range VOUT Max. L (uH) (V) ( Typical Application Circuit for 1W LED VIN Range VOUT Max. ...

Page 6

Application Information (Continue) LED Dimming Control There are some different types of dimming control circuits: 1. Using a PWM Signal to SHDN Pin With the PWM signal applied to the SHDN pin, the TS19371 is turned on or off by ...

Page 7

Marking Diagram Boost (Step-up) WLED Driver with OVP SOT-26 Mechanical Drawing DIM Device Code Y = Year Code M = Month Code (A=Jan, B=Feb, C=Mar, D=Apl, E=May, ...

Page 8

Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No ...

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