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US12231 Schematic ( PDF Datasheet ) - Unisonic Technologies

Teilenummer US12231
Beschreibung POWER INTERFACE SWITCH
Hersteller Unisonic Technologies
Logo Unisonic Technologies Logo 




Gesamt 15 Seiten
US12231 Datasheet, Funktion
UNISONIC TECHNOLOGIES CO., LTD
US12231
Preliminary
EXPRESSCARDTM POWER
INTERFACE SWITCH
DESCRIPTION
The UTC US12231 ExpressCardTM power interface switches
are designed to meet the ExpressCardTM specification. The UTC
US12231 distribute 3.3V, AUX, and 1.5V to the single-slot
ExpressCard|34 or ExpressCard|54 sockets. Each voltage rail is
protected with integrated current-limiting circuitry, other functions
include thermal protection circuit turns off switches to prevent
device from damage when heavy overloads or short circuits,
The UTC US12231 can use in notebook computers, desktop
computers, PDAs, and digital cameras.
FEATURES
* Meets the ExpressCardTM standard (ExpressCard|34 or
ExpressCard|54)
* Compliant with the ExpressCardTM compliance checklists
* Fully satisfies the ExpressCardTM implementation guidelines
* Supports systems with WAKE function
* TTL-Logic compatible inputs
* Short circuit and thermal protection
* -40°C ~ 85°C ambient operating temperature range
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
US12231L-P20-T
US12231G-P20-T
US12231L-P20-R
US12231G-P20-R
Package
TSSOP-20
TSSOP-20
CMOS IC
TSSOP-20
Packing
Tube
Tape Reel
ExpressCard is a trademark of Personal Computer Memory Card International Association.
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
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US12231 Datasheet, Funktion
US12231
Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
LOGIC SECTION ( SYSRST , SHDNx , STBYx , PERSTx , RCLKENx, OCx , CPUSBx , CPPEx )
Logic Input Supply Current
Input
Input
I(SYSRST )
I( SYSRST )
SYSRST =3.6V, sinking
SYSRST =0V, sourcing
0 1 μA
10
0
1
30
μA
Input
I(SHDNx)
SHDNx =3.6V, sinking
SHDNx =0V, sourcing
01
μA
10 30
Input
I(STBYx )
STBYx =3.6V, sinking
STBYx =0V, sourcing
01
μA
10 30
Logic Input Voltage
RCLEN Output Low Voltage
Input
Inputs
High Level
Low Level
Output
I(RCLKENx)
I(CPUSBx )
Or
I(CPPEx )
VIH
VIL
VOL(RCLEN)
RCLKENx=0V, sourcing
CPUSB or CPPE =0V, sinking
CPUSB or CPPE =3.6V,
sourcing
IO(RCLKEN)=60μA
10 30 μA
01
μA
10 30
2 0.8 V
0.4 V
PERST Assertion Threshold Of Output
Voltage ( PERST Asserted When Any Output
Voltage Falls Below The Threshold)
VPG(3.3VIN)
VPG(AUXIN)
VPG(1.5VIN)
3.3VOUT falling
AUXOUT falling
1.5VOUT falling
2.7 3
2.7 3 V
1.2 1.35
PERST Assertion Delay From Output Voltage
t FD(PERST )
3.3VOUT, AUXOUT, or 1.5VOUT
falling
500 ns
PERST De-assertion Delay From Output
Voltage
t RD(PERST )
3.3VOUT, AUXOUT, and 1.5VOUT
rising within tolerance
4
10 20 ms
PERST Assertion Delay From SYSRST
PERST Minimum Pulse Width
t FD 2(PERST )
t W(PERST)
Max time from SYSRST asserted
or de-asserted
500
3.3VOUT, AUXOUT, or 1.5VOUT
falling out of tolerance or
100 250
triggered by SYSRST
ns
μs
PERST Output Low Voltage
PERST Output High Voltage
VOL(PERST )
VOH(PERST )
IO(PERST)=500μA
0.4 V
2.4 V
OC Output Low Voltage
VOL(OC)
IO(/OC)=2mA
0.4 V
OC Leakage Current
IIKG(OC)
VO(/OC)=3.6V
1 μA
OC Deglitch
tD(OC)
Falling into or out of an
overcurrent condition
6 20 mS
UNDERVOLTAGE LOCKOUT (UVLO)
3.3VIN UVLO
VUVLO(3.3VIN)
3.3VIN level, below which 3.3VIN
and 1.5VIN switches are off
2.6
2.9 V
1.5VIN UVLO
VUVLO(1.5VIN)
1.5VIN level, below which 3.3VIN
and 1.5VIN switches are off
1
1.25
AUXIN UVLO
VUVLO(AUXIN)
AUXIN level, below which all
switches are off
2.6
2.9
UVLO Hysteresis
VUVLO
100 mV
Note: Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be
taken into account separately. ELECTRICAL CHARACTERISTICS(Cont.)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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US12231 pdf, datenblatt
US12231
Preliminary
EXPRESS CARD TIMING DIAGRAMS
CMOS IC
Host Power
(AUXIN, 3.3VIN,
and 1.5VIN)
SYSRST
CPxx
Card Power
(AUXIN, 3.3VOUT,
and 1.5VOUT)
RCLKEN
PERST
a
b
f
c
d
e
Tpd Min Max Units
a System Dependent
b 100 μs
c System Dependent
d 100
μs
e 4 20 ms
f 10 ms
Figure 2. Timing Signals - Card Present Before Host Power Is On
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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