TS1518 Taiwan Semiconductor Company, TS1518 Datasheet
TS1518
Available stocks
Related parts for TS1518
TS1518 Summary of contents
Page 1
... The TS1518 can drive white LEDs from a single Li- Ion battery. The wide input voltage range from 2. ideal for portable with higher conversion efficiency. To control LED brightness, the LED current can be pulsed by applying a PWM (pulse width modulated) signal with a frequency range of 100Hz to 1KHz to the CTRL pin ...
Page 2
... LIM I VFB=200mV B F RSW D TMX D TMN V At Isw = 200mA SAT I Ctrl = 0.3V LKG Full On V CTL Full Off I Ctrl = 2V CTL OVP θ JA 2/7 TS1518 www.DataSheet4U.com Limit Unit - -40 to +125 C Min Typ Max Units 2 ...
Page 3
... LED current is determined by the resistance and CTRL voltage. Shutdown Pin and Dimming Control Pin. VCTRL > 1.8V generates full-scale LED current VCTRL < 0.4V chip is off Switching from 04V to 2.0V, PWM duty cycle controls the LED current Input Supply Pin. Bypass this pin with a capacitor as close to the device as possible 3/7 TS1518 www.DataSheet4U.com Version: B07 ...
Page 4
... Open Circuit Protection The TS1518 has an internal latched off open-circuit protection circuit. When the LEDs are disconnected from the circuit or fail open, the TS1518 will shutdown automatically until input condition changes to bring it out of the shutdown mode. Inductor Selection A 22uH inductor is recommended for most applications to drive more than 5 LEDs. Although small size and high efficiency are major concerns, the inductor should have low core losses at 1MHz and low DCR (copper wire resistance) ...
Page 5
... Dimming Control using a DC Voltage Dimming Control using a Filtered PWM Signal Step-Up DC-DC Converter, White LED Driver VDC(V) VFB 2 0 1.8 2.2 1.6 9.2 1.4 19.6 1.2 31.1 1 43.4 0.8 63 0.6 74 0.4 86.4 0.2 96.9 0 102 Duty 0% 20% 30% 40% 50% 60% 70% 80% 100% PWM : 2V ; 1KHz ; Vin=3.6V 5/7 TS1518 www.DataSheet4U.com Iout(mA) 0 0.43 1.8 3.6 6 8.5 12.3 14.5 16 Iout ( mA) 20 17 6.4 4.07 0 Version: B07 ...
Page 6
... Step-Up DC-DC Converter, White LED Driver SOT-25 Mechanical Drawing DIM A+ Ө1 S1 6/7 TS1518 www.DataSheet4U.com SOT-25 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX. 0.09 1.25 0.0354 0.0492 0.30 0.50 0.0118 0.0197 0.09 0.25 0.0035 0.0098 2.70 3.10 0.1063 0.1220 1.40 1.80 0.0551 0.0709 1.90 BSC 0.0748 BSC 2.40 3.00 0.09449 0.1181 0.35 BSC 0.0138 BSC 0º ...
Page 7
... The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. Step-Up DC-DC Converter, White LED Driver Notice 7/7 TS1518 www.DataSheet4U.com Version: B07 ...