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YB1522ST View Datasheet(PDF) - YOBON TECHNOLOGIES,INC.

Part NameDescriptionManufacturer
YB1522ST Step-up DC-DC Converter White LED Driver YOBON
YOBON TECHNOLOGIES,INC. YOBON
YB1522ST Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
YB1522
Step-up DC-DC Converter White LED Driver
Pin Configuration
SW 1
5 VIN
GND 2
FB 3
4 CTRL
SOT23-5
Figure 2: Pin Configuration
Pin Description
Table 1
Pin NAME
Description
Switching Pin. This is the collector of the internal NPN power switch.
1
SW Connect to inductor and diode. Minimize the metal trace area
connected to this pin to reduce EMI.
2
GND Ground Pin. Connect directly to local ground plane.
Feedback Pin. Reference voltage is 100mV. Connect LEDs and a
3
FB resistor at this pin. LED current is determined by the resistance and
CTRL voltage.
Shutdown Pin and Dimming Control Pin.
4
CTRL
VCTRL > 1.8V generates full-scale LED current.
VCTRL < 0.4V chip is off.
Switching from 0.4V to 2.0V, PWM duty cycle controls the LED current.
5
VIN
Input Supply Pin. Bypass this pin with a capacitor as close to the
device as possible.
Ordering Information
Order Number Package Type
YB1522ST25
SOT23-5
Supplied As
3000 units Tape & Reel
Package Marking
Please contact sales
representative
YB1522 Rev.1.0
www.yobon.com.tw
2
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