YB1685
2A 380KHz 32V PWM Buck DC/DC Converter
Absolute Maximum Ratings
Input Voltage............................. -0.3V to 32V
Feedback Pin Voltage .................-0.3V to V
IN
Enable Pin Voltage.................... -0.3V to 12V
Switch Pin Voltage ......................-0.3V to V
IN
Power Dissipation .............. Internally Limited
Operating Junction Temperature......... 150°C
Storage Temperature ............ -65°C to 150°C
Recommended Operating Conditions
Input Voltage............................ 3.6V to 32V
Operating Junction Temperature ... -40°C to 125°C
Operating Ambient Temperature.......-40°C to 85°C
Lead Temperature (Soldering, 10 sec)... 260°C
ESD (HBM).......................................2000V
Note:
Stresses greater than those listed under Maximum Ratings may cause permanent damage to the device. This
is a stress rating only and functional operation of the device at these or any other conditions above those
indicated in the operation is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
Electrical Characteristics
Table 2
(V
CC
= 12V, T
A
=25°C, unless otherwise specified.)
Description
Input Voltage
Shutdown Supply Current
Supply Current
Feedback Voltage
Feedback Bias Current
Switch Current Limit
Oscillator Frequency
EN Pin Threshold
EN Pin Input Leakage
Current
Internal PMOS R
DSON
Max. Duty Cycle
Efficiency
Thermal Shutdown
Symbol
V
IN
I
STBY
I
CC
V
FB
I
FB
I
LIM
F
OSC
V
EN
I
H
I
L
R
DSON
D
MAX
η
T
OTSD
V
EN
= 2.5V
V
EN
= 0.5V
V
IN
≦
12V, V
FB
=0V
V
EN
= 12V, I
OUT
= 2A
V
FB
= 0V, I
SW
= 0.1A
V
IN
= 12V, V
OUT
= 5V, I
OUT
= 2A
320
0.7
V
EN
= 0V
V
EN
= 2V, V
FB
= 1.3V
V
IN
= 3.6V to 23V
V
FB
= 1.3V
1.21
Test Conditions
MIN
3.6
30
3.6
1.235
0.1
3
380
1.2
-0.1
-3
140
100
92
165
TYP
MAX
32
90
4
1.26
0.5
4
440
1.7
-1
-10
Units
V
µA
mA
V
µA
A
KHz
V
µA
µA
mΩ
%
%
°C
YB1685 Rev.1.0
www.yobon.com.tw
3
YOBON [ YOBON TECHNOLOGIES,INC. ]
