Current Regulator. PT6913 Datasheet
PT6913 is a special current regulator to drive HV LED.
Compact, few external components design is very
flexible in many applications. PT6913 provides a
programmable 10~100mA constant current. Maximum
400V input voltage provides high reliability for HV LED
lighting. The simple driving topology will improve
power factor, efficiency. EMI issue will be avoided with
this linear control.
Special design is convenient in high-side application.
LED open/short is protected by PT6913. The high
voltage will be absorbed by PT6913 itself. LEDs will
never face high voltage problem.
To improve driving capability, PT6913 provides a pin to
drive external MOSFET. It will be flexible in larger
PT6913 also provide temperature compensation.
When internal junction temperature is higher than
135 ℃ , PT6913 will decrease the output current
linearly. The output current will be zero when junction
temperature reaches 150℃. This protection effectively
avoids the flicker problem during abnormal
GU10, MR16, E11, E17 LED Bulb
Compact Size LED Lighting
Current Regulator for HV LED
5V~400V Operating Voltage
10~100mA Programmable Output Current
±5% Current Accuracy (Target)
Less Than 150uA Operating Current
Parallel Using for High Current Application
Driving External MOSFET for Larger Current
LED Short Protection
When TJ>135℃, output current will be decreased.
Output current will be zero when TJ=150℃
Electrical Capacitor Needless
High Power Factor
Few External Components
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Normal Constant Current Regulator for HV LED
TRIAC Dimming Solution for HV LED
REF2.1 2 Nov., 2011
Valid Part Number
IC Power Supply. VIN pin can be connected to high-voltage directly.
IC Ground. The LED current is provided from this pin in typical application.
Gate Drive. To improve PT6913 driving capability, GD can be connected with external MOSFET.
Output Current Setting. The output current is programmable from 10mA to 100mA by a resistor
across IS pin and IC GND pin.
REF2.1 3 Nov., 2011