YB1685
2A 380KHz 32V PWM Buck DC/DC Converter
Pin Configuration
NC
VIN
SW
GND
1
2
3
4
SOP-8
8
7
6
5
NC
EN
NC
FB
Figure 2: Pin Configuration
Pin Description
Table 1
Pin
1,6,8
Name
NC
Not Connect.
Description
2
VIN
Supply Voltage Input Pin. YB1685 operates from a 3.6V to 32VDC
voltage.
Bypass V
IN
to GND with a suitably large capacitor to eliminate noise
on the input.
Power Switch Output Pin. SW is the switch node that supplies
power to the output.
Ground Pin. Care must be taken in layout. This pin should be
placed outside of the Schottky Diode to output capacitor ground
path to prevent switching current spikes from inducing voltage
noise into YB1685.
Feedback Pin. Through an external resistor divider network, FB
senses the output voltage and regulates it. The feedback threshold
voltage is 1.235V.
Enable Pin. EN is a digital input that turns the regulator on or off.
Drive EN pin high to turn on the regulator, drive it low to turn it off.
3
SW
4
GND
5
FB
7
EN
Ordering Information
Order Number
YB1685SPX8P
Package Type
SOP-8
Supplied As
2500 units Tape & Reel
Package Marking
Please contact sales
representative
2
YB1685 Rev.1.0
www.yobon.com.tw