UCT4150 Datasheet UCT4150 LED V1.1 2007-6-12 LED 4V~40V 1.5 200 KHz UCT4150 1~5 LED TEL: 86-755-61353939 (10 ) LED UCT4150 +4V~+40V FAX: 86-755-83454890 www. szuct . com 1/7 UCT4150 Datasheet 1 Vcc 2 CS 3 GND 4 OUT 5 OSC V1.1 2007-6-12 1 -0.3V to +40V Vcc -0.3V to +40V OUT TJ +150 -40 to +150 +260 10 2 4 ~ 40 V 1.5 A -40 3. OSC ~ +85 Vcc = 5V Ta = 25 Icc Vcc = 4~40V VDP Iout=1A,Vcs Vout ILK Vcs Vout=40V Vcs Vcc Vcs TDC Vcs = Vcc ICH 270 CT TEL: 86-755-61353939 (10 ) 4 mA 1 1.3 V 0.01 10 uA 300 330 mV 85 % 35 uA FAX: 86-755-83454890 Vcc OUT CS OSC www. szuct . com 2/7 UCT4150 Datasheet UCT4150 V1.1 PWM DF 2007-6-12 (Buck converter) Rsense CT L CIN UCT4150 1. UCT4150 TON LED GND PWM CS / MOSFET OUT MOS L L 2. MOS MOSFET Rsense MOS TOFF DF L LED GND 4 3. L LED MOS TEL: 86-755-61353939 (10 ) FAX: 86-755-83454890 www. szuct . com 3/7 UCT4150 Datasheet V1.1 Rsense 2007-6-12 UCT4150 MOS TON MOS L TON L 4. 1 L BUCK TON 4 IRP = IMAX – ILIN TON VL = Vcc VDP VCS VLED TOFF VL = VLED VF IRP LED LED LED LMIN = VL TON IPK VL = VIN VDP VCS VLED TON = VLED VIN F F CT TEL: 86-755-61353939 (10 ) FAX: 86-755-83454890 www. szuct . com 4/7 UCT4150 Datasheet 2 V1.1 2007-6-12 Rsense Rsense = 330mV / IPK IPK = ILED + 0.5 * IRP IPK ILED IRP 10~20% 1.5A Rsense 3 0.2 CT 5. CT 4 VMIN VLED + VDP + VCS + ILED*RL RL ILED 5 VLED + 3V LED 1 1 3 3W LED TEL: 86-755-61353939 (10 ) FAX: 86-755-83454890 www. szuct . com 5/7 UCT4150 Datasheet V1.1 2007-6-12 6 6. 7. TEL: 86-755-61353939 (10 ) FAX: 86-755-83454890 www. szuct . com 6/7 UCT4150 Datasheet TEL: 86-755-61353939 (10 ) FAX: 86-755-83454890 V1.1 2007-6-12 www. szuct . com 7/7