UNISONIC TECHNOLOGIES CO., LTD
P3596
LINEAR INTEGRATED CIRCUIT
150KHZ, 3A PWM STEP-DOWN
DC/DC CONVERTER
1
TO-220B
DESCRIPTION
The UTC P3596 series is a step-down switching regulator able
to provide 3A output current. The available output voltages are
2.5V, 3.3V, 5V, 12V, and an adjustable output version.
1
TO-220-5
FEATURES
*Output load current: 3A
*Adjustable version output voltage range, 1.23V ~ 32V±4%
*Operating voltage can be up to 35V
*Low power standby mode
*High efficiency
*Internal current and thermal limit
1
TO-263-5
ORDERING INFORMATION
Note:
Ordering Number
Lead Free
Halogen Free
P3596L-xx-TB5-T
P3596G-xx-TB5-T
P3596L-xx-TA5-T
P3596G-xx-TA5-T
P3596L-xx-TQ5-R
P3596G-xx-TQ5-R
P3596L-xx-TQ5-T
P3596G-xx-TQ5-T
xx: Output Voltage, refer to Marking Information.
www.unisonic.com.tw
Copyright © 2017 Unisonic Technologies Co., Ltd
Package
Packing
TO-220B
TO-220-5
TO-263-5
TO-263-5
Tube
Tube
Tape Reel
Tube
1 of 6
QW-R103-023.I
P3596
LINEAR INTEGRATED CIRCUIT
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
TO-220-5
TO-220B
TO-263-5
25:2.5V
33:3.3V
50:5.0V
12:12V
AD:ADJ
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
MARKING
PIN NAME
VIN
Output
GND
FB (Feedback)
SD (Shutdown)
DESCRIPTION
Operating voltage input
Switching output
Circuit Ground
Output voltage feedback control
ON/OFF shutdown
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R103-023.I
P3596
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Maximum Supply Voltage
VCC
40
V
Operating Voltage
VOPR
4.5 ~ 35
V
ON/OFF Pin Input Voltage
VON/OFF
-0.3 ~ +20
V
Feedback Pin Voltage
VFB
-0.3 ~ +20
V
Output Voltage to Ground (Steady State)
VOUT
-1
V
Power Dissipation
PD
Internally limited
mW
Junction Temperature
TJ
+150
°C
Ambient Operating Temperature
TOPR
-40 ~ +125
°C
Storage Temperature
TSTG
-65 ~ +150
°C
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.
THERMAL DATA
PARAMETER
Junction to Ambient
Junction to Case
SYMBOL
TO-220B
TO-220-5
TO-263-5
TO-220B
TO-220-5
TO-263-5
θJA
θJC
RATINGS
45
45
55
3
3
4
UNIT
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
(TJ=25°C, VIN=12V for the 3.3V, 5V, and Adjustable version and VIN=24V for the 12V version, ILOAD=500mA.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP
MAX
3.8V≦VIN≦35V, 0.2A≦ILOAD≦3A
2.5V
2.4
2.5
2.6
4.75V≦VIN≦35V, 0.2A≦ILOAD≦3A 3.168 3.3
3.3V
3.432
Output Voltage
VOUT
7V≦VIN≦35V, 0.2A≦ILOAD≦3A
5.0V
4.8
5.0
5.2
15V≦VIN≦35V, 0.2A≦ILOAD≦3A
11.52 12.0 12.48
12V
2.5V
VIN=12V, ILOAD=3A
73
3.3V
VIN=12V, ILOAD=3A
73
Efficiency
η
5.0V
VIN=12V, ILOAD=3A
80
12V
VIN=24V, ILOAD=3A
90
FOR P3596-ADJ
4.5V≦VIN≦35V, 0.2A≦ILOAD≦3A
1.193 1.230 1.267
Feedback Voltage
VFB
VOUT programmed for 3V
Efficiency
η
VIN=12V, VOUT=3V, ILOAD=3A
73
ALL OUTPUT VOLTAGE
Feedback Bias Current
IBIAS
Adjustable Version Only, VFB=1.3V
10
50
Oscillator Frequency
fOSC
(Note 1)
127
150
173
Saturation Voltage
VSAT
IOUT=3A (Note 2, 3)
1.16
1.4
Min
ON (Note 3)
100
Duty Cycle
DC
Max
OFF(Note 4)
0
Current Limit
ILIMIT
Peak Current (Notes 2, 3)
3.6
4.5
6.9
Output=0V (Notes 2, 4)
50
Output Leakage Current
ILEAK
Output=-1V, VIN = 40V
2
30
Quiescent Current
IQ
(Note 4)
5
10
Standby Quiescent Current
ISTBY ON/OFF pin=5V (OFF), VIN = 40V
80
200
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
UNIT
V
V
V
V
%
%
%
%
V
%
nA
kHz
V
%
A
μA
mA
mA
μA
3 of 6
QW-R103-023.I
P3596
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
ON/OFF CONTROL
ON/OFF Pin Logic Input
Threshold Voltage
SYMBOL
Low
High
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIH
Regulator ON
0.6
1.3
Regulator OFF
2.0
VIL
IH
VLOGIC=2.5V (Regulator OFF)
5
15
ON/OFF Pin Input Current
IL
VLOGIC=0.5V (Regulator ON)
0.02
5
Notes: 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 15V for the 12V version, and 12V for others to
the output transistor switch OFF.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
V
μA
μA
force
4 of 6
QW-R103-023.I
P3596
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION
For Fixed Versions
CIN: 470 µF, 50V, Aluminum Electrolytic Nichicon “PL Series”
COUT: 220 µF, 25V Aluminum Electrolytic, Nichicon “PL Series”
D1: 5A, 40V Schottky Rectifier, 1N5825
L1: 68 µH, L38
For Adjustable Version
Where VREF = 1.23V
Note: 1.Select R1 to be approximately 1 KΩ, use a 1% resistor for best stability.
2. CIN: 470 μF, 50V, Aluminum Electrolytic Nichicon “PL Series”
3. COUT: 220 μF, 35V Aluminum Electrolytic, Nichicon “PL Series”
4. D1: 5A, 40V Schottky Rectifier, 1N5825
5. L1: 68 μH, L38
6. R1:1 KΩ, 1%
7. CFF: See Application Information Section
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R103-023.I
P3596
LINEAR INTEGRATED CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
6 of 6
QW-R103-023.I
