UNISONIC TECHNOLOGIES CO., LTD
P1696
200KHZ, 2A PWM STEP-DOWN
DC/DC CONVERTER
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
The UTC
P1696
series is a step-down switching regulator able to
provide 2A output current. The available output voltages are 2.5V
3.3V, 5V, 12V, and an adjustable output version.
FEATURES
*Output load current: 2A
*Adjustable version output voltage range, 1.23V ~ 17.5V±4%
*Operating voltage can be up to 24V
*Low power standby mode
*High efficiency
*Internal OCP and OTP
ORDERING INFORMATION
Ordering Number
Lead Free
P1696L-xx-S08-T
P1696L-xx-S08-R
P1696L-xx-SH2-R
Halogen Free
P1696G-xx-S08-T
P1696G-xx-S08-R
P1696G-xx-SH2-R
Package
SOP-8
SOP-8
HSOP-8
Packing
Tube
Tape Reel
Tape Reel
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QW-R103-035.H
P1696
ABSOLUTE MAXIMUM RATINGS
LINEAR INTEGRATED CIRCUIT
PARAMETER
SYMBOL
RATINGS
UNIT
Maximum Supply Voltage
V
CC
28
V
Operating Voltage
V
OPR
4.5 ~ 24
V
ON/OFF Pin Input Voltage
V
ON/OFF
-0.3 ~ +12
V
Feedback Pin Voltage
V
FB
-0.3 ~ +12
V
Output Voltage to Ground (Steady State)
V
OUT
-1
V
Power Dissipation
P
D
Internally limited
mW
Junction Temperature
T
J
+150
°С
Operating Temperature
T
OPR
-40 ~ +125
°С
Storage Temperature
T
STG
-40 ~ +150
°С
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS
(T
J
=25°С, V
IN
=12V for the 2.5V 3.3V, 5V, and Adjustable version and V
IN
=24V for the 12V version, I
LOAD
=500mA.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNIT
5.0V≦V
IN
≦24V,
0.2A≦I
LOAD
≦2A
2.4
2.5
2.6
V
2.5V
6.0V≦V
IN
≦24V,
0.2A≦I
LOAD
≦2A
3.168
3.3
3.432
V
3.3V
Output Voltage
V
OUT
7.5V≦V
IN
≦24V,
0.2A≦I
LOAD
≦2A
4.8
5.0
5.2
V
5.0V
15V≦V
IN
≦24V,
0.2A≦I
LOAD
≦2A
11.52
12.0
12.48
V
12V
Efficiency
2.5V
3.3V
5.0V
12V
η
V
IN
=12V, I
LOAD
=2A
V
IN
=12V, I
LOAD
=2A
V
IN
=12V, I
LOAD
=2A
V
IN
=24V, I
LOAD
=2A
4.5V≦V
IN
≦24V,
0.2A≦I
LOAD
≦2A
V
OUT
programmed for 3V
V
IN
=12V, V
OUT
=3V, I
LOAD
=2A
Adjustable Version Only, V
FB
=1.3V
(Note 1)
I
OUT
=2A (Note 2, 3)
(Note 3)
(Note 4)
Peak Current (Notes 2, 3)
Output=0V (Notes 2, 4)
Output=-1V (Note 5)
(Note 4)
ON/OFF Pin=5V (OFF) (Note 5)
1.19
73
75
80
80
1.230
75
10
200
1.16
100
0
2.5
2
5
80
50
230
1.4
1.267
%
%
%
%
V
%
nA
kHz
V
%
50
30
10
200
A
μA
mA
mA
μA
UTC P1696-ADJ
Feedback Voltage
Efficiency
ALL OUTPUT VOLTAGE
Feedback Bias Current
Oscillator Frequency
Saturation Voltage
Max Duty Cycle (ON)
Min Duty Cycle (OFF)
Current Limit
Output Leakage Current
Quiescent Current
Standby Quiescent Current
ON/OFF CONTROL
ON /OFF Pin Logic Input
Threshold Voltag
VFB
η
I
BIAS
f
OSC
V
SAT
DC
I
CL
I
L
I
Q
I
STBY
170
V
IH
Low (Regulator ON)
1.3
V
V
IL
High (Regulator OFF)
1.3
V
I
H
VLOGIC=2.5V (Regulator OFF)
5
15
μA
ON /OFF Pin Input
Current
I
L
VLOGIC=0.5V (Regulator ON)
0.02
5
μA
Note 1: The switching frequency is reduced when the second stage current limit is activated.
2: No diode, inductor or capacitor connected to output pin.
3: Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
4: Feedback pin removed from output and connected to 12V for the 2.5V 3.3V, 5V, and the ADJ. version, and
15V for the 12V version, to force the output transistor switch OFF.
5: V
IN
= 24V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R103-035.H
P1696
FIXED OUTPUT VOLTAGE VERSIONS
LINEAR INTEGRATED CIRCUIT
FB
3
V
IN
+
330μF
V
IN
1
4
SD
UTC
P1696G -5.0V
5,6,7,8
GND
2
Output
L
33μH
C
OUT
+
470μF
5.0V/2A
C
IN
ADJUSTABLE OUTPUT VOLTAGE VERSIONS
Note:1.
V
OUT
½
(
1
R
1
)V
FB
R
2
2. Tested under typical application condition:
C
IN
330μF
330μF
L
33μH
33μH
C
OUT
470μF
220μF
V
IN
<17V
V
IN
≥17V
C
F
-
-
220pF(option)
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QW-R103-035.H
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