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APE1612TY Datasheet(PDF) 1 Page - Advanced Power Electronics Corp.

Part # APE1612TY
Description  1.9A FIXED FREQUENCY WHITE LED DRIVER
PDF  9 Pages
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Manufacturer  A-POWER [Advanced Power Electronics Corp.]
Direct Link  http://www.a-power.com.tw
Logo A-POWER - Advanced Power Electronics Corp.

APE1612TY Datasheet(HTML) 1 Page - Advanced Power Electronics Corp.

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Advanced Power
Electronics Corp.
1.9A FIXED FREQUENCY WHITE LED DRIVER
FEATURES
DESCRIPTION
2.5V to 5.5 V Operating Input Voltage Rang
Drives up to 8 Series White LEDs
1.2MHz Fixed Switching Frequency
Wide Range for PWM Dimming (200Hz to 200KHz)
Internal 1.9A Switching Current Limit
Over Voltage Protection (OVP)
Internal Soft-start Function
Current Limit and Thermal Shutdown Protection
Under Voltage Lockout
Available in the TSOT-26 Packages
1. 8 series LED application
2. LED Dimming application
Data and specifications subject to change without notice
201203211
APE1612
TYPICAL APPLICATION
1
The APE1612 is a step-up converter designed for
driving up to 8 series white LEDs for backlighting application.
The APE1612 uses current mode, 1.2MHz fixed frequency
architecture to regulate the LED current, which is set through
an external current sense resistor. Its low 300mV feedback
voltage reduces power loss and improves efficiency. The OV
pin monitors the output voltage and turns off the converter if
an over-voltage condition is present due to an open circuit
condition. The APE1612 includes under-voltage lockout,
current limiting and thermal shutdown protection preventing
damage in the event of an output overload. The driver is
available in TSOT-26 packages.
VIN=5V
C1
4.7uF
L1
4.7uH
U1
APE1612
VCC
EN
OV
GND
SW
C2
1uF
D1
B240A
ILED=VFB/R3, VFB=300mV
200~200KHz
FB
R3
8-WLEDs
Dimming
VIN=5V
C1
4.7uF
L1
4.7uH
U1
APE1612
VCC
EN
OV
GND
SW
C2
1uF
D1
B240A
ILED=VFB/R3, VFB=300mV
ON
OFF
FB
R3
8-WLEDs


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