sc1157 Semtech Corporation, sc1157 Datasheet - Page 2

• Manufacturer Part Number: sc1157
• Description: Programmable Synchronous Dc/dc Controller For Advanced Processors
• Manufacturer: Semtech Corporation

ELECTRICAL CHARACTERISTICS
Preliminary - August 7, 2000
ABSOLUTE MAXIMUM RATINGS
Parameter
V
PGND to GND
BST to GND
Thermal Resistance Junction to Case
Thermal Resistance Junction to Ambient
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 sec
ESD Rating (Human Body Model)
Unless specified: V
PARAMETER
Output Voltage
Supply Voltage
Supply Current
Load Regulation
Line Regulation
Gain (A
Current Limit Voltage
Oscillator Frequency
Buffered Reference Voltage
Oscillator Max Duty Cycle
DH Sink/Source Current
DL Sink/Source Current
Dead Time
VID Pin Source current
NOTE:
(1) Specification refers to application circuit (Figure 1.).
(2) This device is ESD sensitive. Use of standard ESD handling precautions is required.
© 2000 SEMTECH CORP.
CC
to GND
OL
)
CC
= 4.75V to 5.25V; GND = PGND = 0V; FB = V
V
V
I
All VID codes
V
I
BST
BST
VIDx < 2.4V
O
REF
CC
CC
OSENSE
= 0.3A to 15A
= 5.0
H
L
=1mA
- DL = 4.5V, DL - PGND
- DH = 4.5V, DH - PGND
to V
O
PROGRAMMABLE SYNCHRONOUS DC/DC
CONTROLLER FOR ADVANCED PROCESSORS
CONDITIONS
(1)
(1)
Symbol
T
ESD
T
V
T
LEAD
STG
JC
JA
IN
A
L
652 MITCHELL ROAD NEWBURY PARK CA 91320
H
= 3V
= 3V
O
; 0mV < (CS(+) - CS(-)) < 60mV; T
MIN
125
4.5
60
90
50
30
1
1
-65 to +150
Maximum
-0.3 to 15
-0.3 to 7
0 to 70
130
300
± 1
1.5
30
See Table 1.
+ 0.15
TYP
1.25
140
100
100
35
70
95
8
1
MAX
155
15
80
7
J
SC1157
Units
°C/W
°C/W
= 25
UNITS
kV
°C
°C
°C
V
V
V
kHz
mA
mV
dB
uA
ns
o
%
%
%
V
V
A
A
C
2