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SC1401 데이터시트(PDF) 3 Page - Semtech Corporation

부품명 SC1401
상세설명  HIGH PERFORMANCE SYNCHRONOUS BUCK CONTROLLER WITH LDO FOR PORTABLE POWER
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제조업체  SEMTECH [Semtech Corporation]
홈페이지  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

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SC1401
© 2000 SEMTECH CORP.
652 MITCHELL ROAD
NEWBURY PARK CA 91320
HIGH PERFORMANCE SYNCHRONOUS BUCK
CONTROLLER WITH LDO FOR PORTABLE
POWER
November 21, 2000
3
ABSOLUTE MAXIMUM RATINGS
PARAMETER
MAXIMUM
UNITS
VDD1 to GND
-0.3 to +36
V
PGND to GND
- 0.3 to 0.3
V
V5V, FB, CSH, CSL, IOS to GND
-0.3 to +6
V
SYNC, SHDN, PSAVE, ENABLEIO to GND
-0.3 to +6
V
BST to GND
-0.3 to +36
V
BST to PHASE
-0.3 to 6
V
VDD2 to GND
-0.3 to +36
V
GATEIO to GND
9
V
Junction operating temperature (TJ)
-40 to +125
°C
Thermal resistance junction to ambient (
θJA)
50
°C/W
Storage temperature
-65 to +150
°C
Lead soldering temperature
+300, 10 seconds
°C
ELECTRICAL CHARACTERISTICS
Unless specified: VDD1 = 12V, VDD2 = 12V V5V = 5V,
SHDN = PSAVE = 5V, TA = -40 °C to +85 °C . Typical values are at TA = +25°C.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SMPS CONTROLLER
VDD1 Input Voltage Range
6.0
30.0
V
VOUT SMPS
VREF
5.5
V
Internal BandGap Voltage, VREF
Measured at the Feedback pin
1.225
1.250
1.275
V
Load Regulation
0mV < CSH - CSL < 100mV
2
%
Line Regulation
6V < VDD1 < 30V
0.03
%/V
Overcurrent-Limit Threshold
CSH - CSL
100
130
160
mV
PSAVE Mode Threshold
CSH - CSL, PSAVE = 0 V
30
mV
Soft-Start Ramp Time
From enable to 95% full current limit with
respect to fOSC
512
clks
Oscillator Frequency
SYNC = V5V
SYNC = 0V
265
165
300
200
335
235
kHz
Maximum Duty Factor
85
90
87
93
%
SYNC = V5V
SYNC = 0V
Note 1: This device is ESD sensitive. Use of standard ESD handling precautions is required.


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