sc1406a Semtech Corporation, sc1406a Datasheet - Page 5

• Manufacturer Part Number: sc1406a
• Description: Portable Pentium Ii & Iii Power Supply Controller
• Manufacturer: Semtech Corporation

January 28, 2000
ELECTRICAL CHARACTERISTICS (CONT.)
Unless specified: -0 < T
PARAMETER
Core Converter Soft Start Current
Core Converter Soft Start Current
V
Threshold
V
VID DAC
VID Input Threshold
VID Input-Pull-up Current,VID (0-4)
Output Voltage Accuracy
Settling Time*
CORE Comparator (CMP, CMPREF, HYS, CO)
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
© 2000 SEMTECH CORP.
SSCORE
SSCORE
Soft Start Termination
Discharge Threshold
A
< 100°C ; V
CC
= 3.3V (See test circuit)
SYMBOL
CMP<CMPREF
CMP>CMPREF
T
CORE CONVERTER CONTROLLER
V
t
V
pdVID_DAC
VCPMREF
I
I
pd CMP-CO
V
V
V
SSCORE
CMPREF
DAC_ERR
V
I
V
V
SSTERM
BCMP
I
SSDIS
VID_IH
VID_IL
T
T
CPM-
VID
HCO
LCO
R
PORTABLE PENTIUM
POWER SUPPLY CONTROLLER
F
I
VID is set to change VCORE from
1.30V to 1.45V or 1.45V to 1.30V
DAC
V
V
parallel with 10pF, V
parallel with 10pF, V
CMPREF
step with +20mV, overdrive
CMPREF
Load Impedance = 100k in
Load Impedance = 100k in
VID (0-4) = 00000...11111
step with 20mV overdrive,
= 0, VID(0-4) = 00000...11111
Discharge (Sink) current
Charge (Source) current
V
CMP
3.0V < V
= 1.3V
652 MITCHELL ROAD
C
V
= 1.3V
CONDITIONS
T
T
R
R
R
DAC
= V
CMPREF
A
A
C
R
T
T
V
HYS
HYS
HYS
= full range
= full range
CO
CO
A
A
CC
Pentium is a registered trademark of Intel Corporation
= 25° C,
= 25° C,
= 1000pF
CMPREF
= 170k
= 100K
= 10pF
= 3.0V
= 17k
= open
CC
= 1.3V
V
V
< 3.6V
CMP
CMP
= 1.3V
CC
CC
= +40mV
= 40mV
= 3.6V
= 3.0V
®
II & III
0.7*V
NEWBURY PARK CA 91320
-0.85
MIN
0.30
1.53
±85
0.6
2.5
±7
6
CC
+ 100 + 115
TYP MAX UNITS
1.70
±1.5
+ 10
150
1
7
7
1
+0.85
1.45
1.87
400
+ 13
SC1406A
0.8
0.4
40
35
±2
±3
+ 2
20
30
20
30
10
10
mA
mV
mV
µA
µA
µA
µA
µs
ns
ns
%
V
V
V
V
5