S3525 Datasheet PDF - Unisonic Technologies
| Part Number | S3525 | |
| Description | PC POWER SUPPLY SUPERVISOR | |
| Manufacturers | Unisonic Technologies | |
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UNISONIC TECHNOLOGIES CO., LTD
S3525
PC POWER SUPPLY
SUPERVISOR
DESCRIPTION
The UTC S3525 is specially designed for switching power supply
system. it provides protection circuits, power good output (PGO)
indicator, fault protection output (FPOB) and a PSONB control.
The protection circuits include over voltage protection (OVP),
under voltage protection (UVP) and over current protection (OCP)
monitoring for system voltages and currents.
When 3.3V, 5V or 12V voltage is decreasing to 2.68V, 4.3V and
9.9V respectively, the under voltage protection (UVP) function will be
enabled. FPOB 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.
FEATURES
* OVP/UVP monitors 3.3V, 5V, 12V input voltage level.
* OCP monitors IS33, IS5, IS12 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 Plating
Halogen Free
S3525L-D14-T
S3525G-D14-T
S3525L-S14-R
S3525G-S14-R
S3525L-S14-T
S3525G-S14-T
Package
DIP-14
SOP-14
SOP-14
CMOS IC
Packing
Tube
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2010 Unisonic Technologies Co., Ltd
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S3525
ELECTRICAL CHARACTERISTICS (Cont.)
PARAMETER
SWITCHING CHARACTERISTICS
PSONB ON(PSONB Low to FPOB Low)
PSONB OFF(PSONB Hi to PGO Low)
PGI to PGO Delay Time
Timing PGO Low to FPOB high
UVD/OCD Turn on Delay Time
Noise Deglitch Time
Noise Deglitch Time for Latch
TOTAL DEVICE
Low Voltage
Supply Current
SYMBOL
TEST CONDITIONS
T(PSONB ON) VDD=5V
T(PSONB OFF) VDD=5V
TPG VDD=5V
TPSOFF VDD=5V
TUVP1 FPOB=Low & PGI > 1.2V
TUVP2 FPOB=Low & PGI < 1.2V
tg1
tg2
VDD
IDD PSONB=5V
CMOS IC
MIN TYP MAX UNIT
32 38 62 ms
32 38 62 ms
200 300 490 ms
2.0 2.4 4 ms
65 75 122 ms
260 300 488 ms
63 75 120 μs
63 75 120 μs
3.0 V
1 mA
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for S3525 electronic component. |
| Information | Total 9 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ S3525.PDF Datasheet ] | |
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