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参数资料
| 型号： | LA5779N |
| 元件分类： | 稳压器 |
| 英文描述： | 3 A SWITCHING REGULATOR, 192 kHz SWITCHING FREQ-MAX, ZFM5 |
| 封装： | TO-220, 5 PIN |
| 文件页数： | 2/4页 |
| 文件大小： | 62K |
| 代理商： | LA5779N |
LA5779N
No.A0795-2/4
Electrical Characteristics at Ta
= 25°C, VO = 3.3V
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Reference voltage
VOS
VIN = 12V, IO = 1.0A
1.193
1.23
1.267
V
Efficiency
η
VIN = 15V, IO = 1.0A, Set VO = 5V
84
%
Switching frequency
f
VIN = 15V, IO = 1.0A
128
160
192
kHz
Switching frequency when
short-circuit protection is active
fshort
VIN = 15V, VOS = 0V
15
30
45
kHz
Line regulation
VOLINE
VIN = 8 to 20V, IO = 1.0A
40
100
mV
Load regulation
VOLOAD
VIN = 15V, IO = 0.5 to 1.5A
10
30
mV
Output voltage temperature
coefficient
VO/Ta
Designed target value. *
±0.5
mV/
°C
Ripple attenuation factor
RREJ
f = 100 to 120Hz
45
dB
Output leak current
IOleak
VIN = 15V, SWOUT = -1V
50
A
Current limiter operating voltage
IS
VIN = 15V
3.1
A
Operating current
IVIN
VIN = 15V
5.6
mA
Standby current
ISTBY
VIN = 15V, ENA = 5V
200
A
ENA pin LOW voltage range
VENAL
0.6
V
ENA pin HIGH voltage range
VENAH
2.4
VIN
V
Thermal shutdown operating
temperature
TSD
Designed target value. *
165
°C
Thermal shutdown Hysteresis
width
TSD
Designed target value. *
15
°C
* Design target value: No measurement made.
Package Dimensions
unit : mm (typ)
3343
Pin Assignment
(1) VIN (2) SWOUT
(3) GND
(4) VOS
(5) ENA
PCA00833
Pd max -- Ta
0
2.0
3.3
4.0
5.6
6.0
7.5
10.0
8.0
1.75
--30
0
20
40
60
80
100
120
140
160
100
×100×1.5mm3
50
×50×1.5mm3
30
×30×1.5mm3
Ambient temperature, Ta --
°C
Allowable
pwer
dissipation,
Pd
max
-
W
Infinitely large heat sink
θjc=5°C/W
Al heat
sink plate
tightening
torque
39N.cm
With
silicone
grease
applied.
No heat sink
SANYO : 220-5HK
0.9
1.7
(1.6)
0.8
3.6
10.0
10.4MAX
1.3
2.7
4.5
8.4
15
2
2.
7
15.
3
15.
0
(8.
8)
21.
7
23.
0
0.4
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