SC2453 데이터 시트보기 (PDF) - Semtech Corporation
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SC2453 Datasheet PDF : 22 Pages
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SC2453
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified:
VCC = 5V, fs = 600KHz, SS/SHDN = 5V, SYNC = 0V,
TA
=
T
J
=
-35°C
to
105°C
Parameter
Test Conditions
Duty Cycle
PWM 1 & 2 Maximum Duty Cycle
fs = 100kHz
PWM 1 & 2 Maximum Duty Cycle
fs = 700kHz
PWM 1 & 2 Minimum Duty Cycle
Current Limit
CH1& 2 ILIM Set Voltage
Soft Start/Shut Down
Charge Current
Discharge Current
Disable Threshold Voltage
Disable Low to Shut Down
Output
Gate Drive On-Resistance(H)
Gate Drive On-Resistance(L)
Rise Time(H)
Fall Time(H)
Rise Time(L)
Fall Time(L)
Power Good
ISOURCE=15mA
ISINK=15mA
COUT = 1000pF
COUT = 1000pF
COUT = 1000pF
COUT = 1000pF
FB1 & FB2 Trip Level above FB
Hysteresis
FB1 & FB2 Trip Level below FB
Hysteresis
PWR OK Output Low Level
Pullup resistor = 10K
PWR OK Output High Leakage
Pullup resistor = 10K
Min
Typ
90
71
2
1.8
2
5
10
1
0.45
0.5
50
2
2
15
25
15
15
2
10
1
-20
-10
1
0.4
Note:
(1) This device is ESD sensitive. Use of standard ESD handling precautions is required.
Max Units
%
%
%
2.2
V
15
µA
mA
0.55
V
µs
5
Ω
5
Ω
nS
nS
nS
nS
20
%
%
-2
%
%
0.6
V
30
µA
2005 Semtech Corp.
4
www.semtech.com
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