YB1517ST25 YOBON [YOBON TECHNOLOGIES,INC.], YB1517ST25 Datasheet - Page 2

• Manufacturer Part Number: YB1517ST25
• Description: Step-up DC-DC Converter & White LED Driver
• Manufacturer: YOBON [YOBON TECHNOLOGIES,INC.]

Pin Configuration
Pin Description
Table 1
Ordering Information
Table 2
YB1517 MRev.1.0
Pin
1
2
3
4
5
Order Number
YB1517ST25
NAME
CTRL
GND
VIN
SW
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 220mV. When connecting
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
Step-up DC-DC Converter & White LED Driver
Figure 3 : YB1517 Pin Configuration
3000 units Tape & Reel
www.yobon.com.tw
Supplied as
Description
Package Marking
Y58 F
YB1517
2