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參數(shù)資料
| 型號(hào)： | SC1144 |
| 廠商： | Semtech Corporation |
| 英文描述： | PROGRAMMABLE, HIGH PERFORMANCE MULTI-PHASE, PWM CONTROLLER |
| 中文描述： | 可編程，高性能多相，PWM控制器 |
| 文件頁數(shù)： | 2/11頁 |
| 文件大?。?/td> | 156K |
| 代理商： | SC1144 |
PROGRAMMABLE, HIGH PERFORMANCE
MULTI-PHASE, PWM CONTROLLER
SC1144
1999 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
Preliminary - August 24, 1999
2
The SC1144 is patent pending
ELECTRICAL CHARACTERISTICS
Unless otherwise noted: T
A
= 25
°
C, V
CC 5V
= 5V, V
CC 12V
= 12V, 4-Phase operation.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range
V
CC12V
V
CC5V
V
CC5V
V
CC12V
V
CC12V
V
CC5V
V
CC12V
V
CC5V
V
REF
V
INL
V
INH
I
INL
I
INH
V
INL
V
INH
V
OL
V
OH
10.0
12.0
14.0
V
UVLO Range
3.9
V
UVLO Hystersis
50
mV
UVLO Range
9.0
V
UVLO Hystersis
100
mV
Supply Voltage Range
4.5
5.0
5.5
V
Supply Current
DRV Outputs open
12
20
mA
Supply Current
V
OUT
= 2.00V, I
O
= 0
Iref = 250μA
40
mA
Reference Current Pin Voltage
2.05
V
Vid0-4 Clock Select & Divide
Logic Low
0.8
V
Select Logic Threshold
Logic High
2
V
Vid0-4 Clock Select & Divide
Vid0-4=0V
-20
μA
Select Input Bias Current
Vid0-4=4.5V
+50
μA
Enable Pin
.8
V
2
V
DRV0-3 Output Voltage
I
sink
= 1mA
.3
V
I
source
=1ma,OUTV=V
cc12
V
-1
V
DRV0-3 Source Current
I
SRC
I
SNK
V
OUT
= 2.00V
V
OUT
= 2.00V
20
mA
DRV0-3 Sink Current
40
mA
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Limits
Units
V
CC5V
to GND
FBG to GND
V
cc5v
FBG
-0.3 to + 12
V
± 1
V
V
CC12V
to GND
Operating Temperature Range
V
cc12v
T
A
T
J
T
STG
θ
JC
-0.3 to +20
V
0 to +70
°C
Junction Temperature Range
0 to +125
°C
Storage Temperature Range
-55 to +150
°C
Thermal Resistance Junction to Case
25
°C/W
Thermal Resistance Junction to Ambient
θ
JA
T
LEAD
80
°C/W
Lead Temperature (Soldering) 10 sec
300
°C
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