YB1693
2A / 150KHz Buck DC-DC Converter
Absolute Maximum Ratings
Supply Voltage............................................. +28V
Operating Voltage Range ..............+4.5V to +24V
SW, EN Pin Input Voltage ................. -0.3V to Vcc
Feedback Pin Voltage....................... -0.3V to Vcc
Power Dissipation ..................... Internally Limited
Output Voltage to Ground ............................... -1V
Storage Temperature Range ...... -65℃ to +150℃
Operating Temperature Range ... -40℃ to +125℃
Thermal Resistance
Junction to Case
θ
JA
..............................70℃ / W
Junction to Ambient
θ
JC
.........................15℃ / W
Note:
Ө
JA
is measured with the PCB copper area
(need connect to GROUND pins) of approximately
1.5 in
2
(Multi-layer)
Electricity Characteristics
Table 3
( T
A
=25°C, unless otherwise noted, V
IN
=12V for 3.3V, 5V, Adj version. I
LOAD
=0.2A )
Function Parameter
Symbol
ADJ
V
FB
η
3.3V
V
FB
η
5V
V
FB
η
I
FB
F
OSC
T
SS
I
CL
F
SCP
V
SAT
V
IL
V
IH
I
L
I
H
DC
I
Q
I
STBY
SW pin = 0
SW pin = -1
Rising edge of EN on to I
CL
Pear Current, no outside circuit
V
FB
=0V force driver on
When current limit occurred and
o
V
FB
<0.5V, Ta = 25 C
Test Conditions
4.5V≤ V
IN
≤24V
0.2A≤ I
LOAD
≤2A
V
IN
=12V, I
LOAD
=2A
4.75V≤ V
IN
≤24V
0.2A≤ I
LOAD
≤2A
V
IN
=12V, I
LOAD
=2A
7V≤ V
IN
≤24V
0.2A≤ I
LOAD
≤2A
V
IN
=12V, I
LOAD
=2A
V
FB
=1.3V (Adj version only)
Min
1.193
1.180
76
3.168
3.135
80
4.80
4.75
84
Typ
1.23
Max
1.267
1.280
3.432
3.465
5.20
5.25
-100
173
Units
V
%
Output Feedback
Efficiency
Output Feedback
Efficiency
Output Feedback
Efficiency
Feedback Bias Current
Oscillator Frequency
Soft-Start Time
Current Limit
3.3
V
%
5
V
%
-10
127
150
3
2.4
60
1.15
1.3
-0.1
nA
KHz
mS
A
KHz
Oscillator Frequency of Short Circuit
Protect
Saturation Voltage
ON/OFF Pin Logic Input Threshold
Voltage
ON/OFF Pin Logic Input Current
Maximum Duty Cycle (ON)
Maximum Duty Cycle (OFF)
Quiescent Current
Standby Quiescent Current
SW Pin Leakage
Current
I
OUT
=2A, No outside circuit
V
FB
=0V force driver on
Low (regulator ON)
High (regulator OFF)
V
LOGIC
=2.5V (OFF)
V
LOGIC
=0.5V (ON)
V
FB
=0V force driver on
V
FB
=12V force driver off
V
FB
=12V force driver off
ON/OFF pin=5V
V
IN
=24V
No outside circuit,
V
FB
=12V force driver off
V
IN
=24V
2.0
1.50
0.6
-0.5
-0.01
V
V
µA
100
0
4
45
8
100
100
-200
-5
%
mA
µA
I
SWL
µA
mA
YB1693 MRev.1.0
www.yobon.com.tw
3
YOBON [ YOBON TECHNOLOGIES,INC. ]
