AN8014 Panasonic Semiconductor, AN8014 Datasheet - Page 6

• Manufacturer Part Number: AN8014
• Description: Step-down/ step-up/ or inverting DC-DC converter control IC
• Manufacturer: Panasonic Semiconductor

AN8014S
6
Pin No.
Terminal Equivalent Circuits (continued)
10
5
6
7
8
9
I / O
O
I
I
I
U.V.L.O.
V
V
0.1 V
V
output
V
REF
CC
REF
REF
IN
7
50 A
I
CHG
Equivalent circuit
5
S.C.P.
0.75 V
50 A
Source current
Sink current
Latch
S
R
10
Q
CLM
CLM
comp.
8
IN
6
FB
S.C.P.:
Connection for the capacitor that sets the
soft start period and the timer latch short-
circuit protection circuit time constant.
Use a capacitor with a value of 1 000 pF
or higher.
The charge current I
timing resistor R
to sample variations and temperature varia-
tions.
It is approx. 2.3 A when R
I
IN :
Noninverting input to the error amplifier.
Use the common-mode input in the range
IN :
Inverting input to the error amplifier.
Use the common-mode input in the range
FB:
Output from the error amplifier.
The source current is approx. 110 A and
sink current is approx. 8 mA.
Correct the frequency characteristics of
the gain and the phase by connecting a re-
sistor and a capacitor between this pin
and IN pin.
N.C.: Not connected.
CLM:
Detects the overcurrent state in switching
transistor.
Insert a resistor with a low resistance between
this pin and V
When this pin falls to a level 95 mV or
more lower than V
turned off for that period thus narrowing
the width of the on-period.
(This implements a pulse-by-pulse
overcurrent protection technique.)
CHG
0.1 V to 0.8 V.
0.1 V to 0.8 V.
V
R
RT
T
CC
11
Description
1
Voltage regulators
to detect overcurrent states.
T
[A]
which controls sample
CC
CHG
, the PWM output is
is decided by the
T
15 k .