SC1406 Datasheet, PDF (4/11 Pages) Semtech Corporation – PORTABLE PENTIUM II & III POWER SUPPLY CONTROLLER

PORTABLE PENTIUM^® II & III
POWER SUPPLY CONTROLLER
SC1406
PRELIMINARY - August 27, 1999
ELECTRICAL CHARACTERISTICS (CONT.)
Unless specified: -0 < T_A < 100°C; V_CC = 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 I_SSCORE
Charge (Source) current
Discharge (Sink) current
0.6 1 1.45 µA
0.30 1
mA
V_SSCORE Soft Start Termination
Threshold
V_SSCORE Discharge Threshold
VID DAC
V_SSTERM
V_SSDIS
1.53 1.70 1.87 V
150 400 mV
VID Input Threshold
V_{VID_IH}
3.0V < V_CC < 3.6V
0.7*V_CC
V_{VID_IL}
VID Input-Pull-up Current,VID (0-4)
I_VID
VID (0-4) = 00000...11111
6
Output Voltage Accuracy
V_{DAC_ERR} I_DAC = 0, VID(0-4) = 00000...11111 -0.85
Settling Time*
t_{pdVID_DAC}
C_DAC = 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
I_BCMP
V_CPM-
VCPMREF
I_CMPREF
V_HCO
CMP<CMPREF
V_LCO
CMP>CMPREF
T_{pd CMP-CO}
T_R
T_F
V_CMP = V_CMPREF = 1.3V
V_CMPREF = 1.3V
R_HYS = open
R_HYS = 17kΩ
R_HYS = 170kΩ
Load Impedance = 100k in
parallel with 10pF, V_CC = 3.0V
Load Impedance = 100k in
parallel with 10pF, V_CC = 3.6V
V_CMPREF = 1.3V ∆ V_CMP = +40mV
step with +20mV, overdrive
T_A = 25°C,
T_A = full range
V_CMPREF = 1.3V ∆ V_CMP = 40mV
step with 20mV overdrive,
T_A = 25°C,
T_A = full range
C_CO = 10pF
V_CC = 3.0V
R_CO = 100K
±2 µA
±1.5 ±3 mV
+2
±89 +100 +111 µA
+8 +10 +12.5
2.5
V
0.4 V
20 ns
30
20
30
7 10
ns
7 10
© 1999 SEMTECH CORP.
Pentium is a registered trademark of Intel Corporation
4
652 MITCHELL ROAD NEWBURY PARK CA 91320