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LV5026MC
Pin Functions
Pin No.
1
RT
Pin name
Pin function
Switching frequency selection pin.
L or Open : 50kHz switching,
H: 70 kHz switching.
In case of 70kHz,connect RT pin to REFOUT pin.
VREF-OUT
(3V typ)
RT
Equivalent circuit
1k Ω
on time
GND
2
REF_OUT
Built-in 3V Regulate out Pin.
If this function isn’t used, please connect to nothing.
VIN
VREF-OUT
(3V typ)
GND
3
REF_IN
External LED current Limit Setting pin. If less than
VREF (0.61V) voltage is input, Peak current value is
VIN
used at the input voltage. If more than REF_IN voltage
is input, it is done at VREF voltage. If this function isn’t
used, please connect nothing.
CS
REF_IN
GND
4
CS
LED current sensing in. If this terminal voltage
exceeds VREF (Or REF_IN), external FET is OFF.
VIN
And if the voltage of the terminal exceeds 1.9V,
LV5026MC turns to latch-off mod
CS
REF_IN
GND
5
PWM_D
PWM Dimming pin.L or open: normal operation,
H: Stop operation.
VIN
PWM_D
200k Ω
700k Ω
GND
6
7
8
GND
OUT
VIN
GND pin.
Driving the external FET Gate Pin.
Power supply pin. Operation
: VIN > UVLOON Stop: VIN < UVLOOFF
VIN
OUT
Switching Stop : VIN > VINOVP
GND
9
OUT2
This pin drive the FET which is stabilized the TRIAC
dimming application.
VIN
If ACS is less than 3V, OUT2 turn High voltage.
If this function isn’t used, please connect nothing.
1k Ω
OUT2
GND
10
ACS
ACS pin senses AC Voltage.
If this function isn’t used, please connect GND.
VIN
ACS
GND
No.A2042-5/16
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