Datasheet

UNISONIC TECHNOLOGIES CO., LTD
S3527
CMOS IC
PC POWER SUPPLY
SUPERVISOR

DESCRIPTION
The UTC S3527 is designed for switch power supply system.
Four important functions of UTC S3527 are the following: the Over
Voltage Detector (OVD), the Under Voltage Detector (UVD), the
Over Current Detector (OCD) and power good signal generating.
OVD/UVD monitor 3.3V, 5V and dual 12V to protect our power
supply and PC, FPO goes to high when one of these supply
voltages exceeds their normal operation voltage range.
OCD monitors I33, I5, I12 input current sense. An adjustable
over-current condition composed of Iref and “protection current
range resistor” helps users design OCD easily.
Power good signal generating notifies personal computer when
power supply is ready or power supply is going to shutdown,
therefore it can provide a reliable power supply environment.

FEATURES
* The Over Voltage Detector (OVD) monitors VX, V33,
V5, V12A and V12B input voltage.
* The Under Voltage Detector (UVD) monitors V33, V5,
V12A and V12B input voltage.
* The Over Current Detector (OCD) monitors I33&V33,
I5&V5, I12A&V12A and I12B&V12B input pins.
* The VX>1.2V provide an extra protection.
* Both of the power good output (PGO) and fault
protection latch (FPOB) are Open Drain Output.

* 75/600ms time delay for UVD/OCD/VX.
* 300ms time delay for PGO.
* 38ms for PSONB input signal De–bounce.
* 14us for OVD internal signal De–glitch.
* 1ms for UVD/VX internal signal De–glitch.
* 20ms for OCD internal signal De–glitch.
* 73us for PGI internal signal De–glitch.
* 4ms for PSONB turn-off FPOB.
ORDERING INFORMATION
Ordering Number
Lead Free
S3527L-D16-T
-
Halogen Free
S3527G-D16-T
S3527G-S16-R
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
Package
Packing
DIP-16
SOP-16
Tube
Tape Reel
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
CMOS IC
MARKING
DIP-16

PIN CONFIGURATION

PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PIN NAME
PGI
GND
FPOB
PSONB
I12A
RI
I12B
V12B
VX
I5
I33
V12A
V33
V5
VCC
PGO
SOP-16
DESCRIPTION
Power good input signal pin
Ground
Fault protection output pin, open drain output
On/Off switch input
12VA over current protection sense input
Current sense adjust input
12VB over current protection sense input
12VB over voltage & under voltage & over current sense input pin
Extra protection sense input
5V over current protection sense input
3.3V over current protection sense input
12VA over voltage & under voltage & over current sense input pin
3.3V over voltage & under voltage & over current sense input pin
5V over voltage & under voltage & over current sense input pin
Power supply
Power good output signal pin, open drain output
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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CMOS IC
BLOCK DIAGRAM
VCC
PWR
VCCI
PSONB
1.2V~1.8V
38ms
debounce
VREF=1.2V
V33
V5
V12A
V12B
Power On Reset
UN
+
OV
+
UN
+
OV
+
UN
+
OV
+
UN
+
OV
+
PWR
4ms
clr
delay
clr
Bandgap
Reference
75ms/
600ms
delay
Internal
Power
OV
+
+
V12A
+
PGI
I33
IREF*8
I5
IREF*8
I12A
I12B
IREF*8
IREF*8
PGO
clr 300ms
delay
PWR
OSC
V12A
+
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
clr
73us
debounce
FPOB
R
S Q
V12A
+
V12A
+
VCCI=3.6V
clr
1ms
debounce
clr
14us
debounce
VX
VREF=1.2V
CLK
V12A
clr
20ms
VREF=1.2V
debounce
V12A
+-
IREF=VREF/RI
RI
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CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
RATINGS
UNIT
-0.3~16
V
-0.3~VCC+0.3(Max. 7V)
-0.3~V12A+0.3(Max. 7V)
Input Voltage
V
-0.3~V12A+0.3(Max. 16V)
-0.3~VCC+0.3(Max. 7V)
Output Voltage
V
-0.3~16
Operating Temperature
-40~125
°C
Storage Temperature
-55~150
°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.

RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
Input Voltage
Output Voltage
Output Sink Current
Output Current For RI

SYMBOL
VCC, V12A
PGI, PSONB
V5, I5, V33, I33
I12A, V12B, I12B
PGO
FPOB
SYMBOL
VCC
PGI, PSONB, V5, V33
V12A, V12B
PGO
FPOB
FPOB
PGO
RI
TEST CONDITIONS
MIN
3.8
TYP
5
0.3V
0.3V
10
MAX
16
7
16
7
16
10
10
65
UNIT
V
V
V
V
V
mA
mA
uA
MAX
UNIT
ELECTRICAL CHARACTERISTICS (VCC=5V, TA=25°C, unless otherwise specified)
PARAMETER
OVER VOLTAGE DETECTION
Over Voltage Threshold
ILEAKAGE Leakage Current
VOL Low level Output Voltage
PGI AND PGO
Under Voltage Threshold
Input Threshold Voltage
ILEAKAGE Leakage Current
VOL Low level Output Voltage
Offset Voltage Of OCP Comparators
PSONB
Input Pull-up Current
High-level Input Voltage
Low-level Input Voltage
TOTAL DEVICE
ICC Supply Current
VCC Operation Start Up Voltage
VCC Under Lockout Voltage
SYMBOL
V33
V5
V12AB
VX
FPOB
FPOB
V33
V5
V12AB
PGI
PGO
PGO
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
TEST CONDITIONS
Use UVD Timing
V(FPOB)=5V
ISINK=10mA
MIN
TYP
3.8
5.6
13.5
1.176
3.9
4.0
5.8
6.0
13.85 14.2
1.20 1.224
5
0.3
V
V
V
V
uA
V
2.6
4.0
9
2.9
3.0
4.4
4.6
10.65 11.0
1.2
5
0.5
6
V
V
V
V
uA
V
mV
PGO=5V
ISINK=10mA
-6
PSONB=0V
150
1.2
uA
V
V
1
3.6
3.2
mA
V
V
1.8
PSONB=5V
3.2
2.8
3.4
3.0
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CMOS IC
ELECTRICAL CHARACTERISTICS (VCC=5V, TA=-40°C~125°C, unless otherwise specified)
PARAMETER
SWITCHING CHARACTERISTICS
PGI To PGO Delay Time
Short Circuit Delay Time
PGO To FPOB Delay Time
Under Voltage Delay Time
Over Current Delay Time
Over Voltage Delay Time
VX Delay Time
PSONB De-bounce Time
PGI De-bounce Time
SYMBOL
Td1
Td2
Td2-1
Td3
Td4
Td5
Td6
Td7
Tb1
Tb2
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
TEST CONDITIONS
For 160
For 161
MIN
TYP
MAX
UNIT
100
20
392
300
75
600
∞
400
100
800
2
40
13
9
40
24
47
4
60
20
14
60
38
73
6
81
27
19
81
52
100
mS
mS
mS
mS
mS
μS
mS
μS
μS
mS
μS
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CMOS IC
TYPICAL APPLICATION 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
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