BD3021HFP-M Ver la hoja de datos (PDF) - ROHM Semiconductor
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BD3021HFP-M Datasheet PDF : 15 Pages
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BD3021HFP-M
Technical Note
●Electrical characteristics (Unless otherwise specified, Ta=25°C, Vcc=13.5V, CLK=GND )
120
500
6
100
Ta=125℃
400
5
80
4
300
60
Ta=25℃
3
Ta=-40℃
200
40
2
20
100
1
0
0
0
0
5
10
15
20
25
0
100 200 300 400 500
0
SUPPLY VOLTAGE: Vcc [V]
OUTPUT CURRENT: IOUT [mA]
Fig.1 Circuit Current
Fig.2 Circuit Current
Ta=-40℃
Ta=25℃
Ta=125℃
5
10
15
20
25
SUPPLY VOLTAGE : Vcc [V]
Fig.3 Input Stability
6
Ta=25℃
5
4
Ta=-40℃
3
2
Ta=125℃
1
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2
OUTPUT CURRENT: Io[A]
Fig. 4 Load Stability
5.50
5.25
5.00
4.75
4.50
-40
0
40
80
120
AMBIENT TEMPERATURE: Ta [℃]
Fig. 7 Output Voltage
Temperature Characteristics
9
Ta=25℃
7
Ta=125℃
5
Ta=-40℃
3
1
-1
-3
0 0.5 1 1.5 2 2.5 3
CT PIN VOLTAGE: VCT [V]
Fig.10 CT Pin Charge / Discharge
Current (Vcc=5V)
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1
0.8
Ta=125℃
0.6
Ta=25℃
0.4
Ta=-40℃
0.2
0
0
100 200 300 400 500
OUTPUT CURRENT: Io [mA]
Fig.5 Dropout Voltage
6
5
4
3
2
1
0
100 120 140 160 180 200
AMBIENT TEMPERATURE: Ta [℃]
Fig.8 Thermal Shutdown
Circuit Characteristics
4.8
4.6
VHS
4.4
Vdet
4.2
4.0
3.8
-40
0
40
80
120
AMBIENT TEMPERATURE: Ta [℃]
Fig.11 Reset Detection
Voltage vs. Temperature
3/14
80
60
40
Ta=125℃
Ta=25℃
20
Ta=-40℃
0
10 100 1000 10000 100000 1000000
FREQUENCY : f [Hz]
Fig. 6 Ripple Rejection
10
8
6
4
2
0
0
1
2
3
4
5
OUTPUT VOLTAGE: VOUT [V]
Fig.9 Restion Voltage
(Vcc=VOUT)
6
5
4
Watch time
3
Reset time
2
1
0
-40
0
40
80
120
AMBIENT TEMPERATURE: Ta [℃]
Fig.12 WDT Time vs. Temperature
(CT=0.01µF)
2010.11 - Rev.A
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