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參數(shù)資料
| 型號： | SC1402ISS |
| 廠商： | Semtech Corporation |
| 英文描述： | Multi-Output, Low-Noise Power Supply Controller for Notebook Computers |
| 中文描述： | 多輸出，低噪聲電源控制器，用于筆記本電腦 |
| 文件頁數(shù)： | 2/18頁 |
| 文件大?。?/td> | 270K |
| 代理商： | SC1402ISS |
SC1402
2000 SEMTECH CORP.
652 MITCHELL ROAD
NEWBURY PARK CA 91320
Multi-Output, Low-Noise Power Supply
Controller for Notebook Computers
December 15, 2000
ABSOLUTE MAXIMUM RATINGS
2
PARAMETERS
V+, BST3, BST5 to GND
PGND to GND
PHASE3 to BST3, and PHASE5 to BST5
VL to GND
REF,SYNC,SEQ,PSAVE,TIME_ON5,RESET to GND
RUN/ON3, SHDN to GND
VDD
to GND
12 Out to GND
VL, REF Short to GND
12 Out Short to GND
REF Current
VL Current
12 Out Current
VDD Shunt Current
T
S
Storage Temperature
T
L
Lead soldering temperature
MAXIMUM
-0.3, +36
± 0.3
-6 to +0.3
-0.3 to 6
-0.3 to (VL+.3V)
-0.3 to (V+ + 0.3V)
-0.3 to +30V
-0.3 to (VDD + 0.3V)
Continuous
Continuous
+5
+50
+200
+15
-65 to +150
+300, 10 seconds
UNITS
V
V
V
V
V
V
V
V
sec.
sec.
mA
mA
mA
mA
°C
°C
ELECTRICAL CHARACTERISTICS
(1)
(Unless otherwise noted: V+ = 15V, both PWMs on, SYNC = VL, VL load = 0mA, REF load = 0mA, PSAVE = 0V, T
A
=-40 to +85°C.
Typical values are at T
A
= +25°C).
PARAMETER
CONDITIONS
MAIN SMPS CONTROLLERS
Input Voltage Range
3V Output Voltage in
Adjustable Mode
CSL3 tied to FB3
3V Output Voltage in Fixed Mode V+ = 6V to 30V, 0mV < CSH3-CSL3 < 80mV,
FB3 = 0V
5V Output Voltage in Adjustable
Mode
CSL5 tied to FB5
5V Output Voltage in Fixed Mode V+ = 6V to 30V, 0mV < CSH5-CSL5 < 80mV,
FB5 = 0V
Output Voltage Adjust Range
Either SMPS
Adjustable-Mode Threshold
Voltage
Load Regulation
Either SMPS, 0V < CSH_-CSL_ < 80mV
Line Regulation
Either SMPS, 6V < V+ < 30V
Current-Limit Threshold
CSH3-CSL3 or CSH5-CSL5
PSAVE = VL or V12OUT < 11.9V
PSAVE Mode Threshold
PSAVE = 0V, not tested
Soft-Start Ramp Time
From enable to 95% full current limit with
respect to f
OSC
Note 2.
Oscillator Frequency
SYNC = VL
SYNC = 0V
Maximum Duty Factor
SYNC = VL
SYNC = 0V
MIN
TYP
MAX
UNITS
6.0
2.45
30.0
2.55
V
V
V+ = 6V to 30V, CSH3-CSL3 = 0V,
2.5
3.17
3.3
3.43
V
V+ = 6V to 30V, CSH5-CSL5 = 0V,
2.45
2.5
2.55
V
4.82
5.0
5.18
V
REF
0.5
5.5
1.3
V
V
Dual Mode comparator
-0.8
0.03
100
-100
25
512
%
%/V
80
-50
10
120
-150
40
mV
mV
clks
270
170
300
200
94
96
330
235
kHz
%
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