TS19376 Datasheet, PDF (1/8 Pages) Taiwan Semiconductor Company, Ltd – 1A Step-down High Brightness LED Driver

TS19376
1A Step-down High Brightness LED Driver
SOT-89-5L
Pin Definition:
1. SW
2. GND
3. DIM
4. CSN
5. VIN
General Description
The TS19376 is a continuous conduction mode inductive step-down converter, designed for driving single or
multiple series connected LED efficiently from a voltage source higher than the total LED chain voltage. The
device operates from an input supply between 8V and 32V and provides an externally adjustable output current of
up to 1A. Depending upon the supply voltage and external components, the TS19376 can provide more than 15
watts of output power. The TS19376 includes the power switch and a high-side output current sensing circuit,
which uses an external resistor to set the nominal average output current, and a dedicated DIM input accepts a
wide range of pulsed dimming. Applying a voltage of 0.3V or lower to the DIM pin turns the output off and switches
the device into a low current standby state
Features
● Wide input voltage range: 8V to 32V
● Up to 1A output current
● 5000:1 Dimming
● Single pin on/off and brightness control using PWM
● Up to 1MHz switching frequency
● Typical 5% output current accuracy
● High-Side Current Sense
● Hysteretic Control: No Compensation
● Adjustable Constant LED Current
Application
● White LED Backlighting
● High Power LED Application
● LED Lighting Equipment
Ordering Information
Part No.
Package
Packing
TS19376CY5 RMG SOT-89-5L 1Kpcs / 7” Reel
Note: “G” denotes Halogen Free Product.
Absolute Maximum Rating
Parameter
Symbol
Limit
Unit
Supply Voltage
Driver output Voltage
V_IN
-0.3 to 40
V
SW
-0.3 to 40
V
Current sense input (Respect to V_IN)
Logic level dimming input
CSN
DIM
+0.3 to (-6.0)
V
-0.3 to +6
V
Switch output current
I_SW
1.0
A
Power Dissipation
P_DMAX
1.5
W
Operation Junction Temperature Range
T_J
-40 to 125
°C
Storage Temperature
T_STG
-55 to 150
°C
Thermal Resistance from Junction to case
θ_JC
15
°C/W
Thermal Resistance from Junction to ambient
θ_JA
50
°C/W
Note: θ_JA is measured with the PCB copper area (need connect to Exposed Pad) of approximately 1 in²(Multi-layer).
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Version: A12