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KA78T12のメーカーはFairchildです、この部品の機能は「3-Terminal 3A Positive Voltage Regulator」です。 |
部品番号 | KA78T12 |
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部品説明 | 3-Terminal 3A Positive Voltage Regulator | ||
メーカ | Fairchild | ||
ロゴ | |||
このページの下部にプレビューとKA78T12ダウンロード(pdfファイル)リンクがあります。 Total 8 pages
www.fairchildsemi.com
KA78TXX
3-Terminal 3A Positive Voltage Regulator
Features
• Output current in excess of 3.0A
• Output transistor safe operating area compensation
• Power dissipation :25W
• Internal short circuit current limiting
• Internal thermal overload protection
• Output voltage offered in 4% tolerance
• No external components required
• Output voltage of 5, 12 and 15V
Description
This family of fixed voltage regulators are monolithic
integrated circuit capable of driving loads in excess of 3.0 A.
TO-220
1
1.Input 2. GND 3. Output
Internal Block Diagram
©2001 Fairchild Semiconductor Corporation
Rev. 1.0.0
1 Page KA78TXX
Electrical Characteristics(KA78T12)
(VI = 19V, IO = 3.0 A, 0 °C ≤ TJ ≤ +125 °C, Po ≤ PMAX , unless otherwise specified.)
Parameter
Symbol
Conditions
Output Voltage
Vo
5mA ≤ Io ≤ 3.0A , TJ =+25 °C
14.5V ≤ VI ≤ 27V, 5mA ≤ Io ≤ 2.0A
Line Regulation (Note1)
∆VO
14.5V ≤ VI ≤ 35V , Io=5mA, TJ =+25 °C
14.5V ≤ VI ≤ 35V , Io=1.0A, TJ =+25 °C
14.9V ≤ VI ≤ 28V, Io =2.0A
16V ≤ VI ≤ 22V, Io =3.0A
Load Regulation (Note1)
∆VO
5mA ≤ Io ≤ 3.0A , TJ =+25 °C
5mA ≤ Io ≤ 3.0A
Thermal Regulation
REGT
Pulse =10ms, P = 20W
TA = +25 °C
Quiescent Current
IQ
5mA ≤ Io ≤ 3.0A , TJ =+25 °C
5mA ≤ Io ≤ 3.0A
Quiescent Current
Change
∆IQ
14.5V ≤ VI ≤ 35V, Io = 5mA
TJ =+25 °C ;
14.9V ≤ VI ≤ 27V, Io =2.0A ;
5mA ≤ Io ≤ 3.0A
Ripple Rejection
RR f = 120Hz, 15V ≤ VI ≤ 25V, Io = 2.0A
Dropout Voltage
VD Io = 3A ,TJ =+25 °C
Output Noise Voltage
VN TA =+25 °C, 10Hz ≤ f ≤ 100KHz
Peak Output Current
IPK TA =+25 °C
Output Resistance
Ro f = 1.0kHz
Short Circuit Current Limit Isc VI = 35V, TJ =+25 °C
Average Temperature
Coefficient of Output
Voltage
∆VO/∆T Io = 5.0mA
Min.
11.5
11.4
Typ.
12
12
Max.
12.5
12.8
Unit
V
- 6.0 45 mV
-
10 30 mV
15 80 mV
- 0.002 0.03 %Vo/W
-
3.5 5.0
4.0 6.0
mA
mA
- 0.1 0.8 mA
57 67
-
dB
- 2.2 2.5
V
- 10 - µV/Vo
- 5.0 -
A
- 2.0 -
mΩ
- 1.5 2.5
A
- 0.5 - mV/°C
Note:
1. Load and line regulation are specified at constant junction temperature. Change in Vo due heating effects must be taken into
account separately. Pulse testing with low duty is used. ( PMAX = 25W)
3
3Pages KA78TXX
Mechanical Dimensions
Package
9.90 ±0.20
(8.70)
ø3.60 ±0.10
TO-220
4.50 ±0.20
1.30
+0.10
–0.05
1.27 ±0.10
2.54TYP
[2.54 ±0.20]
1.52 ±0.10
0.80 ±0.10
2.54TYP
[2.54 ±0.20]
0.50
+0.10
–0.05
2.40 ±0.20
10.00 ±0.20
6
6 Page | |||
ページ | 合計 : 8 ページ | ||
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PDF ダウンロード | [ KA78T12 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
KA78T12 | 3-Terminal 3A Positive Voltage Regulator | Fairchild |
KA78T15 | 3-Terminal 3A Positive Voltage Regulator | Fairchild |