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TN8D51A-HB11-E

P1-P3P4-P6P7-P9P10-P11
TN8D51A
No. A0985-7/11
Output Current
-- A
Output Voltage
-- V
Output Voltage -- Output Current
Output Current
-- A
Efficiency
-- %
Efficiency -- Output Current
Output Current
-- A
Output Voltage
-- V
Characteristic of Output Current Protection
Input Voltage
-- V
Input Voltage
-- V
Input Current
-- A
Input Current -- Input Voltage
Case Temperature, Tc -- °C
Output Voltage
-- V
Output Voltage -- Tc
Output Voltage
-- V
Output Voltage -- Input Voltage
Case Temperature, Tc -- °C
Oscillation Frequency
-- kHz
Oscillation Frequency -- Tc
Input Voltage
-- V
Power Loss -- W
Power Loss -- Input Voltage
11.7
11.9
11.8
12.4
12.0
12.1
12.2
12.3
80246
IT13260
20V
30V
V
IN
=40V
60
100
80
70
90
80246
IT13261
40V
V
IN
=20V
0
1
2
3
7
5
4
6
0
2
16
14
12
10
4
6
8
IT13262
1003020 40 50 60
1003020 40 50 60 1003020 40 50 60
IT13263
11.7
11.9
11.8
12.0
12.2
12.3
12.1
12.4
I
OUT
=3A
130
120
140
160
150
170
180
0 100--25 5025 75
IT13266
V
IN
=30V
8A
I
OUT
=8A
3A
IT13264
I
OUT
=8A
3A
30V
I
OUT
=3A
0
4
2
14
6
8
10
12
2010641214816
IT13319
20V
V
IN
=40V
11.7
11.8
11.9
12.4
12.1
12.0
12.2
12.3
0 100--25 5025 75
IT13265
V
IN
=30V
I
OUT
=3A
TN8D51A
No. A0985-8/11
Input Voltage
-- V
Output Voltage
-- V
Input Reduced-Voltage Characteristic
Input / Output Voltage
-- V
Output Voltage Rising Characteristic
Input / Output Voltage
-- V
Output Voltage Falling Characteristic
Input / Output Voltage
-- V
Output Voltage Rising Characteristic
Output Voltage
-- V
Capacitance of Soft Start Capacitor --
Output Voltage Rising Characteristic
Capacitance of Soft Start Capacitor --
Output Voltage Rising Characteristic
Output Voltage
-- V
Input / Output Voltage
-- V
Output Voltage Falling Characteristic
Input voltage: V
IN
=30V
Output voltage: V
OUT
=12V
Input voltage: V
IN
=30V
Output voltage: V
OUT
=12V
Input voltage: V
IN
=30V
Output voltage: V
OUT
=12V
Output voltage: V
OUT
=12V
Output voltage: V
OUT
=12V
Input voltage: V
IN
=30V
Output voltage: V
OUT
=12V
I
OUT
=3A
I
OUT
=8A
I
OUT
=3A
I
OUT
=8A
V
IN
=30V
I
OUT
=3A
IT12697
ON
IT12698
IT12699
ON
IT12701
C=0.01μF
C=0.1μF
C=0.22μF
ON
IT12702
C=0.01μF
C=0.1μF
C=0.22μF
ON
IT12700
5V / div
20ms
5V / div
20ms
5V / div
20ms
2V / div
10ms
2V / div
10ms
5V / div
20ms
9
10
11
12
13
14
10 15502520 30
IT13267
I
OUT
=3A
8A
V
IN
=30V
I
OUT
=8A
TN8D51A
No. A0985-9/11
Example of Over-voltage Protection Circuit.
Generally, in constant-voltage power supply circuit, output voltage will become higher than the specified value (over-
voltage state) in case of any failures or PC board solderability defects. To minimize the damage caused by this over
voltage, we recommend setting an over-voltage protection circuit.
In designing, the following confirmations are necessary in actual circuit.
1) How the over-voltage protection circuit operates and its effects.
2) Is there any malfunction due to ambient temperature change of each device or exogenous noises?
Over-voltage Protection Circuit Example
Example of Over-voltage Protection Circuit
The thyristor will operate when it accept an over-voltage (V
OUT
) signal, then the fuse is melted and the input power is cut
off, then the operation of IC1 is stopped.
Continued on next page.
V
IN
GND GND
IT12639
V
OUT
FUSE
F1
C
ZD
R
THYRISTOR
Constant-voltage
power supply
+
+
V
IN
GND GND
IT12640
V
OUT
1
THYRISTOR
FUSE
F1
IC1
5
234
C
ZD
R
P1-P3P4-P6P7-P9P10-P11

TN8D51A-HB11-E

Mfr. #:
Buy TN8D51A-HB11-E
Manufacturer:
ON Semiconductor
Description:
Voltage Regulators - Switching Regulators EXPD DCDC 12V 8A
Lifecycle:
New from this manufacturer.
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