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POWER&RF
White LED driver IC LEDIC
TK11851L-G
DESCRIPTION
The TK11851L-G is a pulse skipping step-up DC-DC converter IC designed for White LED driver applications, suitable for 2 to 4 LEDs, with the following built in : a high current switching transistor (400mA peak),an inductor current limit detector, a low voltage reference (Vref=0.515V),a high speed oscillator, an error comparator, a zener diode for opencircuit protection (OVP) and an ON/OFF control(En pin). The IC works with a wide operating supply range (2.3~10V). The white LEDs are connected in series and driven at a constant current resulting in uniform brightness. TK11851L-G 2~4 LED DC-DC IC 。 (400mA)、 、、、 、(OVP)、On/off (En ) 。 2.3~10.