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SC1406A Datasheet PDF : 17 Pages
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PORTABLE PENTIUM® II & III
POWER SUPPLY CONTROLLER
SC1406A
January 28, 2000
ELECTRICAL CHARACTERISTICS (CONT.)
Unless specified: -0 < TA < 100°C; VCC = 3.3V (See test circuit)
PARAMETER
SYMBOL
CONDITIONS
CORE CONVERTER CONTROLLER
Core Converter Soft Start Current
MIN TYP MAX UNITS
Core Converter Soft Start Current ISSCORE
Charge (Source) current
Discharge (Sink) current
0.6 1 1.45 µA
0.30 1
mA
VSSCORE Soft Start Termination
Threshold
VSSCORE Discharge Threshold
VID DAC
VSSTERM
VSSDIS
1.53 1.70 1.87 V
150 400 mV
VID Input Threshold
VVID_IH
3.0V < VCC < 3.6V
0.7*VCC
VVID_IL
VID Input-Pull-up Current,VID (0-4)
IVID
VID (0-4) = 00000...11111
6
Output Voltage Accuracy
VDAC_ERR IDAC = 0, VID(0-4) = 00000...11111 -0.85
Settling Time*
tpdVID_DAC
CDAC = 1000pF
VID is set to change VCORE from
1.30V to 1.45V or 1.45V to 1.30V
CORE Comparator (CMP, CMPREF, HYS, CO)
V
0.8
40 µA
+0.85 %
35 µs
Input Bias Current
Input Offset Voltage
Hysteresis Setting Current
Output Voltage
Propagation Delay Time**
Measured at device pins, from the
trip point to 50% of CO transition.
Output Rise/Fall Times**
Measured between 30% and 70%
points of CO transition
IBCMP
VCPM-
VCPMREF
ICMPREF
VHCO
CMP<CMPREF
VLCO
CMP>CMPREF
Tpd CMP-CO
TR
TF
VCMP = VCMPREF = 1.3V
VCMPREF = 1.3V
RHYS = open
RHYS = 17kΩ
RHYS = 170kΩ
Load Impedance = 100k in
parallel with 10pF, VCC = 3.0V
Load Impedance = 100k in
parallel with 10pF, VCC = 3.6V
VCMPREF = 1.3V ∆ VCMP = +40mV
step with +20mV, overdrive
TA = 25°C,
TA = full range
VCMPREF = 1.3V ∆ VCMP = 40mV
step with 20mV overdrive,
TA = 25°C,
TA = full range
CCO = 10pF
VCC = 3.0V
RCO = 100K
±2 µA
±1.5 ±3 mV
+2
±85 +100 +115 µA
±7 +10 +13
2.5
V
0.4 V
20 ns
30
20
30
7 10
ns
7 10
© 2000 SEMTECH CORP.
Pentium is a registered trademark of Intel Corporation
5
652 MITCHELL ROAD NEWBURY PARK CA 91320
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