yb1520 YOBON TECHNOLOGIES,INC., yb1520 Datasheet - Page 2

• Manufacturer Part Number: yb1520
• Description: Step-up Dc-dc Converter, White Led Driver
• Manufacturer: YOBON TECHNOLOGIES,INC.

Pin Configuration
Pin Description
Table 1
Ordering Information
YB1520 Rev.1.4
Pin
Order Number
1
2
3
4
5
YB1520ST25
NAME
CTRL
GND
SW
VIN
FB
Switching Pin. This is the collector of the internal NPN power switch.
Connect to inductor and diode. Minimize the metal trace area
connected to this pin to reduce EMI.
Ground Pin. Connect directly to local ground plane.
Feedback Pin. Reference voltage is 200mV. Connect LEDs and a
resistor at this pin. 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 0.4V 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.
GND
SW
Package Type
FB
Step-up DC-DC Converter, White LED Driver
SOT23-5
1
2
3
Figure 2: Pin Configuration
www.yobon.com.tw
SOT23-5
3000 units Tape & Reel
Supplied As
Description
5
4
CTRL
VIN
Please contact sales
Package Marking
representative
YB1520
2