LA4708N 查看數據表（PDF） - SANYO -> Panasonic
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LA4708N Datasheet PDF : 9 Pages
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LA4708N
Pd max -- Ta
40
3
Arbitrarily large heat sink
35
θf = 1.5°C/W
30 2.0°C/W
2
θjc = 2.0°C/W
25
3.2°C/W
20 4.1°C/W
15
7.0°C/W
10
5 No Fin
3.5
0-20
0
20 40
60
80 100 120 140 160
Ambient temperature, Ta -- °C
JK470801
10
7
5
3
22
3
θf -- Sf
AI heat sink, t = 1.5mm
Tightening torque 39N cm
With silicone grease applied
5 7 100
2
3
Heat sink area, Sf -- cm2
5 7 1000
JK470802
Block Diagram
100μF/ 16V +
C2
3
RIPPLE
FILTER
C1
IN1
+2
+
2.2μF/ 6.3V
- IN
PREDRIVER
PREDRIVER
PRE GND 4
R1
OFF ON 10kΩ
5
+5V
C4
IN2
+7
2.2μF/ 6.3V
BIAS
CIRCUIT
STANDBY
SW
PREDRIVER
+
IN
-
POP NOISE
PREVENTION
CIRCUIT
6
33μF/ 6.3V + C3
PREDRIVER
8
Pins 1,9 : Don't use.
Pin 10 : No connection.
VCC
VCC1
+
C5 2200μF
1
18
POWER
POWER
OUTPUT PIN-TO-VCC
SHORT PROTECTOR
INVERTING
OUT1
17
∗∗
0.1μF
C6
R2 2.2Ω
LOAD SHORT
PROTECTOR
POWER 16
-
GND1
R3 2.2Ω
∗∗
0.1μF
C7
+
15
NONINVERTING
OUT1
OVERVOLTAGE/
SURGE PROTECTOR
OUTPUT PIN-TO-GND
VCC SHORT PROTECTOR
THERMAL
SHUTDOWN
OUTPUT PIN-TO-GND
SHORT PROTECTOR
∗∗
POLYESTER FILM
CAPACITOR
RL
2 to 4Ω
POWER
POWER
NONINVERTING
LOAD SHORT
PROTECTOR
OUT2
14
POWER
GND2
13
∗∗
R4
R5
0.1μF
C8
2.2Ω
2.2Ω
+
-
OUTPUT PIN-TO-VCC
SHORT PROTECTOR
∗∗ 0.1μF
C9
12
INVERTING
OUT2
RL
2 to 4Ω
9
10
N.C
11
VCC2
Each Pin Voltage
VCC = 13.2V, 5V applied through STBY = 10kΩ, RL = 4Ω, Rg = 0
Pin No.
1
2
3
Name
IN1
DC
Pin voltage (V)
0.29
1.58
6.55
4
Pre-GND
0
Pin No.
7
8
9
10
Name
IN2
POP
-
N.C
Pin voltage (V)
1.58
2.08
0.29
0
Pin No.
Name
Pin voltage (V)
13
PWR-GND 2
0
14
+OUT 2
6.5
15
+OUT 1
6.5
16
PWR-GND 1
0
5
STBY
3.2
11
VCC2
13.2
17
−OUT 1
6.5
6
ON TIME
2.28
12
−OUT 2
6.5
18
VCC1
13.2
No. A1783-3/9
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