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參數(shù)資料
| 型號(hào)： | AP1518T5 |
| 英文描述： | 300KHz, 3A PWM Buck DC/DC Converter |
| 中文描述： | 為300kHz，3A PWM降壓DC / DC變換器 |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大小： | 193K |
| 代理商： | AP1518T5 |
AP1518
300KHz, 3A PWM Buck DC/DC Converter
Absolute Maximum Ratings
Anachip Corp.
www.anachip.com.tw Rev.1.1 Oct 29, 2004
3/12
Symbol
Parameter
Rating
Unit
V
CC
V
SD
V
FB
V
OUT
P
D
T
ST
T
OP
V
OP
Supply Voltage
+24
V
V
V
V
W
o
C
o
C
V
ON
/OFF Pin input voltage
Feedback Pin voltage
Output voltage to Ground
Power dissipation
Storage temperature
Operating temperature
Operating voltage
-0.3 to +18
-0.3 to +18
-1
Internally limited
-65 to +150
-40 to +125
+4.5 to +22
Electrical Characteristics (All Output Voltage Versions)
Unless otherwise specified, V
IN
=12V, I
LOAD
= 0.5A
Symbol
Parameter
V
FB
=0.8V
(Adjustable version only)
Conditions
Min.
Typ.
Max.
-50
-100
345
345
Unit
I
FB
Feedback bias current
-10
nA
255
220
300
F
OSC
Oscillator frequency
KHz
F
SCP
Oscillator frequency of
short circuit protect
When current limit occurred
and V
FB
< 0.5V, Ta=25
C
I
OUT
=3A
No outside circuit
V
FB
=0V force driver on
V
FB
=0V force driver on
V
FB
=12V force driver off
Peak current
No outside circuit
V
FB
=0 force driver on
No outside circuit
V
FB
=12 force driver off
V
IN
=22V
V
FB
=12 force driver off
ON
/OFF pin=5V
V
IN
=22V
Low (regulator ON)
High (regulator OFF)
10
30
50
KHz
1.6
V
SAT
Saturation Voltage
1.4
1.7
V
Max. Duty Cycle (ON)
Min. Duty Cycle (OFF)
100
0
DC
%
5.5
I
CL
Current limit
3.6
4.5
6.5
A
Output = 0V
-200
uA
I
L
Output =-1V
Quiescent Current
Standby Quiescent
Current
Output
leakage
current
-5
5
mA
mA
I
Q
10
150
200
0.6
-
I
STBY
70
uA
V
IL
V
IH
-
ON
/OFF pin logic input
threshold voltage
2.0
1.3
V
I
H
ON
/OFF pin logic
input current
V
LOGIC
=2.5V (OFF)
-0.01
I
L
ON
/OFF pin input
current
V
LOGIC
=0.5V (ON)
-0.1
-1
uA
TO220-5L
TO263-5L
TO220-5L
2.5
3.5
28
Θ
JC
Thermal Resistance
Junction to
case
o
C/W
Θ
JA
Thermal Resistance
With copper area of
approximately 3 in
TO263-5L
Junction to
ambient
23
o
C/W
Specifications with
boldface type
are for full operating temperature range, the other type are for T
J
=25oC.
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