AN8022L Ver la hoja de datos (PDF) - Panasonic Corporation
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AN8022L Datasheet PDF : 16 Pages
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Voltage Regulators
s Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
6
PVCC
(2)
AN8022L, AN8022SB
Description
I/O
VOUT:
O
The terminal for directly driving a power
MOSFET.
6
(2)
7
VCC , (PVCC), (SVCC):
(3)(4)
Supply voltage terminal.
It monitors the supply voltage and has operating
threshold value for start/stop/OVP reset.
8
(5)
SVCC
6V
Comp.
5 µA
500 Ω
8 (5)
TIM/OVP:
I
The terminal with double functions such as OVP
(overcurrent protection) and timer latch terminal.
[OVP]
When it receives the overvoltage signal of the
power supply output and high is input to the
terminal, internal circuit is turned off. At the same
time, this condition (latch) is held. To reset the
OVP latch, it is necessary to reduce VCC under the
release voltage.
[Timer latch]
The output voltage drop due to the overcurrent
condition of power supply output is detected
through the current level of IFB-input. When IFB
becomes less than a current of a certain value,
charge current flows into the capacitor connected
to this terminal. When the capacitor is charged to
the threshold voltage of OVP, OVP
starts to operate and the IC stays stop.
9
(6) VREF
PWM
comp.
IFB:
I
The terminal into which the current feedback sig-
nal is input from the photocoupler of the power
supply output.
I/V
conversion
500 Ω
9 (6)
Note) The number in ( ) shows the pin number for the AN8022SB.
5
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