LB1848MC 데이터 시트보기 (PDF) - ON Semiconductor
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LB1848MC Datasheet PDF : 6 Pages
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LB1848MC
(Cautions)
Pay attention to following two points in an application where the capacitor to GND is connected to the SOF pin:
(1) Sudden startup of VCC power supply causes charging of the capacitor from the IC inside via the SOF pin at startup.
During charging, the state equivalent to the one with the ENA input at “H” occurs, causing output of the corresponding
logic to the output pin, which may result in driving of the load. (The output time period is dependent on the capacity
of capacitor; about 2 ms for 0.01μF.)
(2) To transfer from the drive mode to the standby mode by changing the ENA input from “H” to “L”, the capacitor is
charged from the IC inside via the SOF pin as in the case of above (1). During this charge period, the ENA input keeps
the “H” condition in IC. By changing IN1/IN2 input at this time point, the output can be changed. (The time period is
equal to that of (1) above.)
VCC
Q1
Q2
ENA
60kW
R1
Drive circuit
R2
SOF
External capacitor
GND
[SOF pin internal equivalent circuit diagram]
ICC - VCC Characterstics
50
VCC=VIN, IN1 / 2 / 3 / 4=H / L / H / L
40
30
20
10
0
0
1
2
3
4
5
6
7
8
9
Power-supply voltage, VCC - V
VOUT -- IOUT
1.0
VCC=VIN=4.0V
0.8
0.6
0.4
0.2
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Input current, IOUT - A
280
VCC=5V
240
IIN -- VIN
200
160
120
80
40
0
0
1
2
3
4
5
6
7
8
9
Input voltage, VIN - V
No.A2036-5/6
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