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Datasheet KA78R05C PDF ( 特性, スペック, ピン接続図 )

部品番号 KA78R05C
部品説明 1A Output Low Dropout Voltage Regulators
メーカ Fairchild
ロゴ Fairchild ロゴ 
プレビュー
Total 18 pages
		
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KA78R05C Datasheet, KA78R05C PDF,ピン配置, 機能
www.fairchildsemi.com
KA78RXXC-Series
1A Output Low Dropout Voltage Regulators
Features
• 1A/3.3V, 5V, 8V, 9V, 12V, 15V output low dropout
voltage regulator
• TO-220 full-mold package (4pin)
• Overcurrent protection, thermal shutdown
• Overvoltage protection, short circuit protection
• With output disable function
Description
The KA78RXXC is a low-dropout voltage regulator suitable
for various electronic equipments.
It provides constant voltage power source with TO-220-4
lead full mold package. Dropout voltage of KA78RXXC is
below 0.5V in full rated current(1A).
This regulator has various functions such as peak current
protection, thermal shut down, overvoltage protection and
output disable function.
TO-220F-4L
Internal Block Diagram
Vin 1
THERMAL SHUTDOWN
BANDGAP REFERENCE
Vdis
HIGH / LOW
4
-
+
OUTPUT
ON / OFF
1.4V
1
1. Vin 2. VO 3. GND 4. Vdis
OVERVOLTAGE
PROTECTION
-
+
SOA PROTECTION
Q1
R1
SHSOHORRT-TCCIIRCCUUIITT
PROTECTION
R2
2 Vo
©2011 Fairchild Semiconductor Corporation
3
GND
Rev. 1.0.1

1 Page



KA78R05C pdf, ピン配列
Electrical Characteristics
(Vin = Note3, Io = 0.5A, Ta = 25°C, unless otherwise specified)
Parameter
KA78R33C
KA78R05C
Output voltage
KA78R08C
KA78R09C
KA78R12C
KA78R15C
Load regulation
Line regulation
Ripple rejection ratio
Dropout voltage
Disable voltage high
Disable voltage low
Disable bias current high
Disable bias current low
Quiescent current
Symbol
Vo
Rload
Rline
RR
Vdrop
VdisH
VdisL
IdisH
IdisL
Iq
Conditions
-
-
-
-
-
-
5mA < Io < 1A
Note4
Note1
Io = 1A
Output active
Output disabled
Vdis = 2.7V
Vdis = 0.4V
Io = 0A
Note:
1.These parameters, although guaranteed, are not 100% tested in production.
2. Junction -to -case thermal resistance test environments.
-. Pneumatic heat sink fixture.
-. Clamping pressure 60psi through 12mm diameter cylinder.
-. Thermal grease applied between PKG and heat sink fixture.
3. KA78R33C : Vin = 5V
KA78R05C : Vin = 7V
KA78R08C : Vin = 10V
KA78R09C : Vin = 11V
KA78R12C : Vin = 15V
KA78R15C : Vin = 20V
4. KA78R33C : Vin = 4V to 10V
KA78R05C : Vin = 6V to 12V
KA78R08C : Vin = 9V to 25V
KA78R09C : Vin = 10V to 25V
KA78R12C : Vin = 13V to 29V
KA78R15C : Vin = 16V to 30V
KA78RXXC-SERIES
Min.
3.22
4.88
7.8
8.78
11.7
14.6
-
-
45
-
2.0
-
-
-
-
Typ.
3.3
5
8
9
12
15
0.1
0.5
55
-
-
-
-
-
-
Max.
3.38
5.12
8.2
9.22
12.3
15.4
2.0
2.5
-
0.5
-
0.8
20
-0.4
10
Unit
V
%
%
dB
V
V
V
μA
mA
mA
3


3Pages


KA78R05C 電子部品, 半導体
KA78RXXC-SERIES
Typical Performance Characteristics
KA78R05C
7
6
5
RL=
4
3
RL=5Ω
2
1
0
0 5 10
Input voltage Vin (V)
15
Figure 1. Output Voltage vs. Input Voltage
80
60
40
20
RL=
0
0 5 10 15 20
Input voltage Vin(V)
Figure 2. Quiescent Current vs. Input Voltage
7
6
5
4
3
2
1
0
0 0.5 1 1.5 2 2.5 3
Disable voltage Vdis (V)
Figure 3. Output Voltage vs. Disable Voltage
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
-25
0 25 50 75 100 125
TEMPERATURE Tj(oC )
Figure 4. Output Voltage vs. Temperature(Tj)
10
8
6
4
2
0
-25
0 25 50 75 100 125
Junction temperature Tj(oC)
Figure 5. Quiescent Current vs. Temperature(Tj)
0.55
0.50
0.45
0.40
1.0A
0.35
0.30
0.25
0.20
-25
0
25 50 75 100 125
Junction Temp Tj []
Figure 6. Dropout Voltage vs. Junction Temperature
6

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