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參數(shù)資料
| 型號： | AN8021SB |
| 廠商： | PANASONIC CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | AC-DC switching power supply control IC |
| 中文描述： | 1 A SWITCHING CONTROLLER, 225 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 0.225 INCH, PLASTIC, SSOP-16 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 141K |
| 代理商： | AN8021SB |
4
AN8021L, AN8021SB
Voltage Regulators
Pin No.
Equivalent circuit
Description
I/O
1
SS:
Soft start terminal.
When V
CC
is applied, the capacitor connected to
this pin is charged, and the output duty is de-
creased by inputting the capacitor voltage to the
PWM.
(11)
2
RT:
The terminal for connecting a resistor to deter-
mine the charge and discharge current of the
triangular wave.
(12)
3
CT:
The terminal for connecting a capacitor to gen-
erate the triangular wave.
(13)
4
CLM(
):
The input terminal for pulse-by-pulse
overcurrent protection. It is usually required to
attach an external filter.
I
(15)
5
GND, (PGND), (SGND):
Grounding terminal.
(1)(16)
500
(11)
1
PWM
comp.
500
(12)
2
V
REF
I
Terminal Equivalent Circuits
(13)
3
V
REF
I
O
2I
O
PWM
comp.
Reset
(15)
V
REF
4
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Oscillation frequency 2
f
OSC2
T
a
=
30
°
C to
+
85
°
C
V
CC
=
18 V under no load
V
CC
=
18 V under no load
V
CC
=
18 V under no load
160
240
kHz
Overcurrent protection delay time
t
Dry-CLM
200
ns
Output voltage rise time
t
r
35
ns
Output voltage fall time
t
f
25
ns
I
Electrical Characteristics at T
a
=
25
°
C (continued)
Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Note) The number in ( ) shows the pin number for the AN8021SB.
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