YB1680
1.5MHz, 600mA Synchronous Step-Down Converter
Pin Configuration
EN
FB
1
2
3
5
4
GND
SW
VIN
SOT23-5
Figure 2: Pin Configuration
Pin Description
Table 1
Pin
1
Name
EN
Description
Regulator Enable control input. Drive EN above 1.5V to turn on the
part. Drive EN below 0.3V to turn it off. In shutdown, all functions are
disabled drawing <1μA supply current. Do not leave EN floating.
2
GND
SW
Ground.
Power Switch Output. It is the Switch note connection to Inductor. This
pin connects to the drains of the internal P-CH and N-CH MOSFET
switches.
3
Supply Input Pin. Must be closely decoupled to GND, Pin 2, with a
2.2μF or greater ceramic capacitor.
4
5
VIN
FB
VFB (Adjustable Version) : Feedback Input Pin. Connect FB to the
center point of the external resistor divider. The feedback threshold
voltage is 0.6V.
Ordering Information
Order Number
Package Type
SOT23-5
Supplied As
Package Marking
YB1680ST25XADJP
3000 units Tape & Reel
A1XY (Note 1)
Note 1: XY = Manufacturing Date Code
YB1680 Rev.1.0
www.yobon.com.tw
2
YOBON [ YOBON TECHNOLOGIES,INC. ]
