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參數(shù)資料
| 型號： | HB14173 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Breake Away Header .025(0.64mm) Square Posts |
| 中文描述： | 破開客場頭.025（0.64毫米）方形崗位 |
| 文件頁數(shù)： | 4/10頁 |
| 文件大?。?/td> | 230K |
| 代理商： | HB14173 |
3
2005 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC1462
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Short Circuit Current
I
SC
V
OUT = 0V
200
mA
Output Ripple (pk-pk)(3)(4)
V
R
I
OUT = 45mA, VIN = 2.5V
75
mV
Power Efciency(3)
η
I
OUT = 45mA, VIN = 2.5V
86
%
Maximum Output Voltage(4)
V
OUT
I
OUT = 0mA
2×V
IN
V
Time to Regulation at
Turn-On(5)
t
ON
I
OUT = 0 to 60mA, VIN = 3.6V
500
μs
Input High Threshold
V
IN
SHDN pin, 2.5V ≤ V
IN ≤ 5.5V
1.6
V
Input Low Threshold
V
IL
SHDN pin, 2.5V ≤ V
IN ≤ 5.5V
0.4
V
Over-Temperature Protection(4)
T
OT
140
°C
Over-Temperature Hystereis(4)
Hysteresis
20
°C
Notes:
1) The internal switch resistance, the capacitor ESR and the oscillator’s switching frequency all contribute to R
OUT.
See the CAPACITOR SELECTION section on Page 6 for information on applying the R
OUT specication.
2) The parameter R
SW is equal to the total resistance of all 4 internal switches. See the CAPACITOR SELECTION section for information
on applying the R
SW specication. The parameter was calculated from actual output resistance and the equation on Page 6 for ROUT.
3) All electrical characteristics are for the Typical Application Circuit on Page 1.
4) Guaranteed by design.
5) Soft start functionality is performed along with short circuit protection. If V
OUT is less than VIN - 200mV, then all switches are turned off
and V
OUT is charged with a 200mA current source from VIN. When VOUT reaches VIN - 200mV all switches are enabled.
Electrical Characteristics (Cont.)
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