UNISONIC TECHNOLOGIES CO., LTD
3513
PC POWER SUPPLY
SUPERVISOR
DESCRIPTION
CMOS IC
DIP-16
The UTC
3513
is designed to provide protection circuits, power
good output (PGO) indicator, fault protection output (FPOB) and a
PSONB control for PC switching power supply systems.
The protection circuits include over voltage protection (OVP), under
voltage protection (UVP) and over current protection(OCP) monitoring
for 3.3V, 5V and two 12V.
When 3.3V, 5V or 12V voltage is decreasing to 2.68V, 4.3V and
SOP-16
9.9V respectively, the under voltage protection (UVP) function will be
enabled. FPO will be set to high to turn off the PWM controller IC.
Toggling the PSONB from low to high will reset the fault protection
latch.
The voltage difference across external current shunt is used for OCP functions. An external resistor can be used
to adjust protection threshold.
The power supply is turned on after 38mS delay time when PSONB signal is set from high to low. To turn off
power supply, PSONB signal is set from low to high with the delay time 38mS. The PGI circuitry provides a
power-down warning signal for PGO. When PGI input is lower than the internal 1.20V reference voltage, PGO
signal is pulled low.
The device is available in two versions: UTC
3513E/3513F.
Specially, fan control function is available in
OTP/FC pin of UTC
3513F.
FEATURES
* OVP/UVP monitors 3.3V, 5V, 12V input voltage level.
* OCP monitors I
S33
, I
S5
, I
S12
input current sense.
* Fault protection output (FPOB) with Open Drain Output stage.
* Power good output (PGO) with Open Drain Output stage.
* 38ms de-bounce time for PSONB input signal.
* 300ms time delay from PGI to PGO.
* 2.4ms time delay for PSONB to turn off FPOB.
ORDERING INFORMATION
Ordering Number
Lead Free
3513EL-D16-T
-
3513FL-D16-T
-
Halogen Free
3513EG-D16-T
3513EG-S16-R
3513FG-D16-T
3513FG-S16-R
Package
DIP-16
SOP-16
DIP-16
SOP-16
Packing
Tube
Tape Reel
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 12
QW-R502-129.C
3513
PIN ASSIGNMENT
CMOS IC
PIN DESCRIPTIONS
PIN NAME
PGI
GND
FPOB
PSONB
OTP/FC
RI
V
S12B
I
S12B
*
P
WM
**
I
S12A
*
I
S12AB
**
V
S12A
I
S33
V
S33
I
S5
V
S5
V
DD
PGO
TYPE
Input
Supply
Output
Input
Input
Input
Input
Input
Output
Input
Input
Input
Input
Input
Input
Input
Supply
Output
DESCRIPTION
Power Good Input. For ATX SMPS, it detects AC line voltage through the
main transformer.
Ground
Fault Protection Output. Output signal to control the primary PWM IC through
an opto-coupler. When FPOB is low, the PWM IC is enabled.
Remote On/Off logic input from CPU or main-board. The power supply will be
turned on/off after 38mS delay.
Over temperature protection/Fan speed control
Reference setting. One external resistor Ri connected between RI and GND
pin will determine a reference current, I
REF
= 1.20/Ri, for OCP programming.
12V over/under voltage protection.
12V over current protection.
Pulse width modulation.
12V over current protection.
12V over current protection.
12V over/under voltage protection.
3.3V over current protection
3.3V over/under voltage protection
5V over current protection.
5V over/under voltage protection.
Power supply.
Power good logic output, 0 or 1(open-drain). Power good=1 means that the
power supply is good for operation. The power good delay is 300mS.
PIN NO
1
2
3
4
5
6
7
8
8
9
9
10
11
12
13
14
15
16
* 3513E only
** 3513F only
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 12
QW-R502-129.C
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