SC1544 PDF даташит
Спецификация SC1544 изготовлена «Semtech Corporation» и имеет функцию, называемую «ACPI Controller for Advanced Motherboards». |
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Детали детали
Номер произв | SC1544 |
Описание | ACPI Controller for Advanced Motherboards |
Производители | Semtech Corporation |
логотип |
15 Pages
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SC1544
ACPI Controller for
Advanced Motherboards
POWER MANAGEMENT
Description
.eatures
PRELIMINARY
Semtechs SC1544, SC243x and SC1112A or SC1114
provide all the voltages necessary for an ACPI system.
The SC1544 offers five independant supplies: a 5V dual
supply for USB, a 3.3V dual supply for PCI, a 3.3V or
2.5V dual supply for memory, a 1.5V or 3.3V supply for
AGP and a 1.8V supply. The AGP supply is programmble
using the system TYPEDET signal.
An on-board internal charge pump eliminates the need
for P-channel MOS.ETs and enables function from a single
5V supply (system 5VSB). All dual outputs are over current
protected.
The SC1544 differs from the SC1547 in three important
ways: 1) the device initially starts up in S5, and not G0
like the SC1547; 2) the gate drives for the 1.8V and AGP
outputs are always high in normal operation; 3) no OCP
on the 1.8V and AGP outputs.
Typical Application Circuit
K Complete programmable supply for instantly available
PC systems
K Supports 2.5V memory or 3.3V memory (-2.5 or -3.3
option in part number)
K 5V dual and 3.3V dual supplies are programmable to
be active or inactive in S5
K Integrated AGP voltage supply with TYPEDET signal
for 3.3V or 1.5V operation
K Integrated LDO for 1.8V supply
K Integrated charge pump removes the need for PMOS
.ETs, enables single supply operation
K Over current protection on all dual outputs
K Inherent soft-start capability
K TSSOP-24 package
Applications
K Instantly available motherboards
5V
GND
3.3V
GND
5VSB
GND
5V DUAL
GND
3.3V DUAL
GND
3.3V DUAL MEM
GND
AGP
GND
1.8V
GND
TYPEDET
PWR_OK
EN
/SLP_S3
/SLP_S5
USB
PCI
C1
100uF/6.3V
C2
100uF/6.3V
C3
100uF/6.3V
Q1
IRLR3103
Q2
IRLR3103
C4
100uF/6.3V
Q3
IRLR3103
Q4
IRLR3103
C5
100uF/6.3V
Q5
IRLR3103
Q6
IRLR3103
C6
100uF/6.3V
Q7
IRLR3103
C7
100uF/6.3V
Q8
IRLR3103
C8
100uF/6.3V
U1
1
G5
2
3.3VDM
3
G6
4
G7
5
AGP
6
TYPEDET
7
PWR_OK
8
EN
9
/S3
10
/S5
11
USB
12
PCI
SC1544-3.3
G8
1.8V
G4
3.3VD
GND
G2/3
G1
5VD
5VSB
FC
+CAP
-CAP
24
23
22
21
20
19
18
17
16
15
14
13
Revision 3, May 2002
1
C9 0.01uF
C10
0.1uF
C11
1uF
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SC1544
POWER MANAGEMENT
PRELIMINARY
Absolute Maximum Ratings
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified
in the Electrical Characteristics section is not implied.
Parameter
Symbol
Maximum
Units
Input Supply Voltage
V5VSB
-0.6 to 7
V
Logic Input Pins
-0.6 to V5VSB
V
Charge Pump Output Voltage
VFC -0.6 to 13.2
V
Thermal Impedance Junction to Case
θJC 15.6 °C/W
Thermal Resistance Junction to Ambient θJA 83.8 °C/W
Operating Ambient Temperature Range
TA 0 to 70 °C
Operating Junction Temperature Range
TJ 0 to 125 °C
Storage Temperature Range
TSTG -65 to +150
°C
Lead Temperature (Soldering) 10 Sec.
TLEAD
300
°C
Electrical Characteristics(1)
Unless specified: all applicable silver box supplies (3.3V, 5V, 5VSB) ± 5%, GND = 0V, VSENSE PINS = VOUT(NOM), TA = 25°C. Values in bold apply over full
operating ambient temperature range.
Parameter
Symbol
Test Conditions
Min Typ Max Units
IN
Supply Voltage
Quiescent Current
V5VSB
IQ
All states (S0, S3, S5, disabled)
Undervoltage Lockout
Threshold Voltage
VUVLO
V5VSB Rising
Logic Inputs (EN, PCI, PWR_OK, /S3, /S5, TYPEDET, USB)
Logic Pin Sink Current(2)
Logic Pin Source Current
ISINK
ISOURCE
Threshold Voltage
1.8V Output
VIH
VIL
VBIAS = 5V, all logic pins
EN, VEN = 0V
PCI, TYPEDET, USB, VPIN = 0V
/S3, PWR_OK, VPIN = 0V
/S5, V/S5 = 0V
Output Voltage(3)
V1.8V
1mA ≤ IOUT ≤ 720mA
4.5 5.0 5.5 V
10 15 mA
20
3.5 4.0 4.4 V
0.1 1 µA
0.5 3 µA
50 200
100 400
150 600
2.4 V
0.8 V
1.764
1.746
1.800
1.836
1.854
V
2002 Semtech Corp.
2
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SC1544
POWER MANAGEMENT
PRELIMINARY
Electrical Characteristics (Cont.)(1)
Unless specified: all applicable silver box supplies (3.3V, 5V, 5VSB) ± 5%, GND = 0V, VSENSE PINS = VOUT(NOM), TA = 25°C. Values in bold apply over full
operating ambient temperature range.
Parameter
Symbol
Test Conditions
Min Typ Max Units
1.8V Output (Cont.)
Line Regulation(3)
REGLINE
Load Regulation(3)
REGLOAD
Gate 8 Drive Voltage(4)
V
G8(HI)
VG8(LO)
Gate 8 Drive Current(4)
IG8(SOURCE)
IG8(SINK)
Sense Pin Bias Current
I1.8V
2.5V/3.3V Dual Memory Output
Output Voltage(5)
V3.3VDM
Line Regulation(5)
Load Regulation(5)
Gate 5 Drive Voltage(6)
Gate 5 Drive Current(6)
Gate 6 Drive Voltage(7)
Gate 6 Drive Current(7)
Sense Pin Bias Current
REGLINE
REGLOAD
VG5(HI)
VG5(LO)
IG5(SOURCE)
IG5(SINK)
VG6(HI)
VG6(LO)
IG6(SOURCE)
IG6(SINK)
I3.3VDM
3.3V Dual Output
Output Voltage(8)
V3.3VD
Line Regulation(8)
Load Regulation(8)
REGLINE
REG
LOAD
V5VSB = 4.75V to 5.25V, IOUT = 0A
V5VSB = 5V, IOUT = 0A to 720mA
V = 1.7V, I = 10µA
1.8V
G8
S3, IG8 = -10µA
V1.8V = 1.7V, VG8 = 5V
V1.8V = 1.9V, VG8 = 3V
Sinking, V1.8V = 1.8V
1mA ≤ IOUT ≤ 720mA
V5VSB = 4.75V to 5.25V, IOUT = 0A
V5VSB = 5V, IOUT = 0A to 720mA
V3.3VDM = VOUT(NOM) - 100mV, IG5 = 10µA, S0
IG5 = -10µA, S3
V3.3VDM = VOUT(NOM) - 100mV, VG5 = 5V, S0
V3.3VDM = VOUT(NOM) + 100mV, VG5 = 3V, S0
V3.3VDM = VOUT(NOM) - 100mV, IG6 = 10µA, S3
IG6 = -10µA, S0
V3.3VDM = VOUT(NOM) - 100mV, VG6 = 5V, S3
V3.3VDM = VOUT(NOM) + 100mV, VG6 = 3V, S3
Sinking, 3.3V option, V3.3VDM = 3.3V
Sinking, 2.5V option, V3.3VDM = 2.5V
1mA ≤ IOUT ≤ 720mA
V5VSB = 4.75V to 5.25V, IOUT = 0A
V = 5V, I = 0A to 720mA
5VSB
OUT
0.01 0.10
0.01 0.20
8.00 8.75
0.8 1.0
24
-3.5 -5
-70 -100 -130
-1.5
-2.5
VOUT(NOM)
+1.5
+2.5
0.01 0.10
0.01 0.20
8.00 8.75
0.8 1.0
24
-3.5 -5
8.00 8.75
0.8 1.0
24
-3.5 -5
-330 -475 -620
-215 -310 -405
3.250
3.217
3.300
0.01
0.01
3.350
3.383
0.10
0.20
%
%
V
mA
µA
%
%
%
V
mA
V
mA
µA
V
%
%
2002 Semtech Corp.
3
www.semtech.com
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