sc1154 Semtech Corporation, sc1154 Datasheet - Page 5

• Manufacturer Part Number: sc1154
• Description: Programmable Synchronous Dc/dc Hysteretic Controller For Advanced Processors
• Manufacturer: Semtech Corporation

ELECTRICAL CHARACTERISTICS (cont.)
PRELIMINARY - March 1, 2000
Unless specified: 0 < T
PARAMETER
SOFT START
Charge Current
Discharge Current
INHIBIT COMPARATOR
Start Threshold
VIN12V UVLO
Start Threshold
Hysteresis
HYSTERETIC COMPARATOR
Input Offset Voltage
Input Bias Current
Hysteresis Accuracy
Hysteresis Setting
DROOP COMPENSATION
Initial Accuracy
OVERCURRENT PROTECTION
OCP Trip Point
Input Bias Current
HIGH-SIDE VDS SENSING
Gain
Initial Accuracy
IOUT Source
IOUT Sink Current
Output Voltage Swing
© 2000 SEMTECH CORP.
J
< 125°C, VIN = 12V
Ibias
Isource
V
SYMBOL
Vstart
Vos
Vhys
Vstart
V
V
Isink
V
Ibias
Idischg
DROOP_ACC
IOUT_ACC
HYS_ACC
HYS_SET
V
I
CHG
HYSCMP
OCP
HYSCMP
UVLO
IOUT
OCP
UVLO
INH
IOUT
PROGRAMMABLE SYNCHRONOUS
DC/DC HYSTERETIC CONTROLLER
FOR ADVANCED PROCESSORS
V
VREFB pin to AGND = 20k ,
V
Note: I
V
V
V
V
V
V
V
V
V
R
SS
REFB
(S/S)
DROOP
DROOP
HISENSE
IOUT
IOUTLO
IOUT
IOUTLO
HISENSE
IOUT
= 0.5V, resistance from
= 1V
= 0.5V, V
= 0.05V, V
= 10k0hm
= 1.3V
CHG
pin grounded
= 11.5V
= 12V
= 50mV
= 11V,
= 12V, V
CONDITIONS
= (I
VREFB
HISENSE
652 MITCHELL ROAD NEWBURY PARK CA 91320
HISENSE
IOUTLO
/ 5)
= 12V,
= 12V,
= 11.9V
MIN
10.4
9.25
0.09
500
1.8
40
1
0
TYP
2.0
0.1
13
10
50
1
2
2
10.75
MAX
15.6
0.11
3.75
100
2.4
2.2
60
5
1
7
5
6
SC1154
UNITS
V/V
mA
mV
mV
mV
mV
mV
µA
µA
nA
µA
µA
V
V
V
V
V
5