AN8029 查看數據表（PDF） - Panasonic Corporation
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产品描述 (功能)
生产厂家
AN8029
Panasonic Corporation
AN8029 Datasheet PDF : 13 Pages
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Voltage Regulators
AN8029
s Electrical Characteristics at VCC = 18 V, Ta = 25°C (continued)
Parameter
Symbol
Conditions
Min Typ Max Unit
TON maximum on-period current
I3TON FB terminal = open
TON terminal = GND
−135 −110 −85 µA
TON upper limit voltage
V3TON/H FB terminal = open
0.55 0.7 0.85 V
TON lower limit voltage
V3TON/L FB terminal = open
− 0.1 0.05 0.2 V
TOFF upper limit voltage
V2TOFF/H
0.7 0.9 1.1 V
TOFF lower limit voltage
V2TOFF/L
− 0.1 0.05 0.2 V
Output oscillation frequency
fOSC CON = 2 200 pF, ROFF = 1.5 kΩ 55 65 75 kHz
COFF = 1 000 pF
Output current feedback current gain
GIFB IFB = −1 mA
5.05 6.8 8.55
Pre-start low-level output voltage
V6STB/L VCC = 10 V, IOUT = 10 mA
1 1.25 V
Low-level output voltage 1
V6L(1) IOUT = 10 mA
0.9 2
V
Low-level output voltage 2
V6L(2) IOUT = 100 mA
1.1 2.2 V
High-level output voltage 1
V6H(1) IOUT = −10 mA
15.7 16.5 V
High-level output voltage 2
V6H(2) IOUT = −100 mA
15.5 16.3 V
Pre-start circuit current
I7STB VCC = 12V
55 95 135 µA
Circuit current 1
I7OPR(1)
VCC = 18 V
TON terminal = GND
FB terminal = open
8.55 11.5 14.3 mA
Circuit current 2
I7OPR(2)
VCC = 34 V
TON terminal = GND
FB terminal = open
9.6 12.5 15.4 mA
TDL flowing-out current
I1TDL VTDL = 0.5 V
−5 0 µA
s Terminal Equivalent Circuits
Pin No.
Equivalent circuit
1
VREF
1
High-side Low-side
clamp clamp
2
VREF
Comp.
0.1 V
2
Description
I/O
TDL:
I
Transformer reset detection terminal.
When the transformer reset is detected and low is
inputted into the terminal, the output of the IC
(VOUT) becomes high. However, low-level signal
under the minimum off-period determined by the
TOFF is ignored.
TOFF:
Terminal for connecting the resistor and capacitor
for determining the minimum off-period (low) of
the IC output (VOUT).
An equation for approximate calculation of the
minimum off-period (TOFF) is as follows:
TOFF = 2.2 × C × R
C: External capacitance
R: External resistance
3
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