sc1154 Semtech Corporation, sc1154 Datasheet - Page 6

• 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
HIGH-SIDE VDS SENSING (cont.)
LOSENSE High Level Input
Voltage
LOSENSE Low Level Input
Voltage
Sample/Hold Resistance
BUFFERED REFERENCE
VREFB Load Regulation
DEADTIME CIRCUIT
LOHIB High Level Voltage
LOHIB Low Level Input
Voltage
LOWDR High Level Input
Voltage
LOWDR Low Level Input
Voltage
DRIVE REGULATOR
Output Voltage
Load Regulation
Short Circuit Current
HIGH-SIDE OUTPUT DRIVER
Peak Output Current
© 2000 SEMTECH CORP.
J
< 125°C, VIN12V = 12V
Vldreg
Isink
SYMBOL
Vih
Vldreg
Isrc
Vil
Vih
Ishort
Vil
Vih
Vil
V
LOSENSE
R
LOSENSE
LOWDR
LOWDR
HIGHDR’
LOHIB
DRV
LOHIB
HIGHDR
S/H
REFB
DRV
DRV
V
R
V
V
V
4.5V < = 13V
10µA < I
(Note 1)
(Note 1)
11.4 < VIN12V < 12.6V,
I
1mA < I
duty cycle < 2%, tpw < 100us,
T
V
= 1.5V (src), or V
(sink) (Note 1)
DRV
PROGRAMMABLE SYNCHRONOUS
DC/DC HYSTERETIC CONTROLLER
FOR ADVANCED PROCESSORS
HISENSE
HISENSE
HISENSE
HISENSE
J
BOOT
IOUT
= 125 C
= 50mA
= 10kOhm
- V
= 4.5V,
= 4.5V (Note 1)
DRV
= 3V, R
= 4.5V (Note 1)
CONDITIONS
REFB
BOOTLO
< 50mA
< 500µA
= 6.5V, V
IOUT
HIGHDR
652 MITCHELL ROAD NEWBURY PARK CA 91320
= 10kOhm
= 5V
HIGHDR
MIN
2.85
100
50
0
0
2
2
7
2
TYP
100
65
2
MAX
2.0
1.0
1.8
1.0
1.0
80
9
SC1154
UNITS
mV
mV
mA
V
V
V
V
V
V
V
V
V
A
6