an8029 Panasonic Corporation of North America, an8029 Datasheet - Page 3

• Manufacturer Part Number: an8029
• Description: Self-excited Rcc Pseudo-resonance Type Ac-dc Switching Power Supply Control Ic
• Manufacturer: Panasonic Corporation of North America

Voltage Regulators
Pin No.
TON maximum on-period current
TON upper limit voltage
TON lower limit voltage
TOFF upper limit voltage
TOFF lower limit voltage
Output oscillation frequency
Output current feedback current gain
Pre-start low-level output voltage
Low-level output voltage 1
Low-level output voltage 2
High-level output voltage 1
High-level output voltage 2
Pre-start circuit current
Circuit current 1
Circuit current 2
TDL flowing-out current
Electrical Characteristics at V
Terminal Equivalent Circuits
1
2
Parameter
V
V
REF
1
REF
High-side
clamp
Equivalent circuit
Comp.
Low-side
clamp
0.1 V
CC
2
V
V
Symbol
V
V
V
I
I
V
V
V
V
7OPR(1)
7OPR(2)
I
2TOFF/H
I
2TOFF/L
I
18 V, T
G
3TON/H
3TON/L
f
3TON
6STB/L
1TDL
7STB
OSC
6H(1)
6H(2)
6L(1)
6L(2)
IFB
FB terminal open
TON terminal GND
FB terminal open
FB terminal open
C
C
I
V
I
I
I
I
V
V
TON terminal GND
FB terminal open
V
TON terminal GND
FB terminal open
V
a
FB
OUT
OUT
OUT
OUT
ON
OFF
CC
CC
CC
CC
TDL
25 C (continued)
TDL:
Transformer reset detection terminal.
When the transformer reset is detected and low is
inputted into the terminal, the output of the IC
(V
under the minimum off-period determined by the
T
TOFF:
Terminal for connecting the resistor and capacitor
for determining the minimum off-period (low) of
the IC output (V
An equation for approximate calculation of the
minimum off-period (T
OFF
10 V, I
12V
18 V
34 V
2 200 pF, R
1 mA
10 mA
100 mA
OUT
1 000 pF
0.5 V
10 mA
100 mA
T
Conditions
is ignored.
) becomes high. However, low-level signal
OFF
OUT
2.2
C: External capacitance
R: External resistance
OFF
10 mA
OUT
Description
C
1.5 k
).
R
OFF
) is as follows:
5.05
15.7
0.55
15.5
8.55
Min
0.7
9.6
135
55
55
0.1
0.1
5
0.05
0.05
16.5
16.3
11.5
12.5
Typ
0.7
0.9
6.8
0.9
1.1
110
65
95
1
0
Max
0.85
8.55
1.25
14.3
15.4
135
0.2
1.1
0.2
2.2
75
85
2
AN8029
Unit
kHz
I/O
mA
mA
V
V
V
V
V
V
V
V
V
I
A
A
A
3