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AN8018SA Datasheet(Fiches technique) 7 Page - Panasonic Semiconductor

Numéro de pièce AN8018SA
Description  1.8-volt 2-channel step-up, step-down, or inverting DC-DC converter control IC
Télécharger  26 Pages
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Fabricant  PANASONIC [Panasonic Semiconductor]
Site Internet  http://www.panasonic.com/industrial/
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AN8018SA Datasheet(HTML) 7 Page - Panasonic Semiconductor

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7
Voltage Regulators
AN8018SA
Pin No.
Equivalent circuit
Description
I/O
6
DT1:
I
The pin for setting channel 1 output maximum
duty ratio.
If this terminal is set at a voltage of 0.20 V or less,
FB1 terminal becomes low-level voltage and the
protective function for channel 1 output short-
circuit will stop (Unlatch function).
7
Out1:
O
The pin is open-collector type output terminal.
The absolute maximum rating of output current is
+50 mA.
8
GND:
Grounding terminal
9VCC:
The supply voltage application terminal
Use the operating supply voltage in the range of
1.8 V to 14 V.
10
Out2:
O
The pin is push-pull type output terminal.
The absolute maximum rating of output source
current is
−50 mA.
The absolute maximum rating of output sink cur-
rent is
+80 mA.
A constant current output with less fluctuation
with power supply voltage and dispersion can be
obtained by the resistor externally attached to RB2
pin.
ISO(OUT)2 = 68 ×
VRB2
[A]
RB2
11
RB2:
I
The pin for connecting a resistor for setting chan-
nel 2 output current.
Use a resistance value in the range of 180
Ω to 1.1
k
Ω.
The terminal voltage is 0.36 V (at RB2 = 820 Ω).
VCC
7
8
9
VCC
ISO(OUT)
10
30 k
RB2
VCC
11
120
Out2
s Terminal Equivalent Circuits (continued)
VCC
FB1
6
0.2 V
OSC
PWM


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