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AN8013SH Datasheet(Fiches technique) 4 Page - Panasonic Semiconductor

Numéro de pièce AN8013SH
Description  Single-channel step-up or step-down DC-DC converter control IC
Télécharger  15 Pages
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Fabricant  PANASONIC [Panasonic Semiconductor]
Site Internet  http://www.panasonic.com/industrial/
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AN8013SH
Voltage Regulators
4
s Electrical Characteristics at Ta = 25°C (continued)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Short-circuit protection circuit block
Input threshold voltage
VTHPC
0.70
0.75
0.80
V
Input standby voltage
VSTBY

120
V
Input latch voltage
VIN

120
mV
Charge current
ICHG
VSCP = 0 V
−1.6
−1.3 − 1.0
µA
Comparator threshold voltage
VTHL
1.90
V
Overcurrent Protection Block
Input threshold voltage
VCLM
VCC − 120 VCC − 100 VCC − 80
mV
Delay time
tDLY
200
ns
Whole device
Total consumption current 1
ICC
RT = 15 kΩ
2.4
3.5
mA
Total consumption current 2
ICC2
RT = 5.1 kΩ, CT = 150 pF
3.4
mA
Note) At V
CC = 12 V, RT = 15 kΩ, CT = 15 pF, unless otherwise specified.
s Terminal Equivalent Circuits
Pin No.
Pin
I/O
Function
Internal equivalent circuit
1
CLM
I
Detects the overcurrent state in switching
transistor.
Insert a resistor with a low resistance between
this pin and VCC to detect overcurrent states.
When this pin falls to a level 100 mV or more
lower than VCC, the PWM output is turned off
for that period thus narrowing the width of
the on period.
(This implements a pulse-by-pulse
overcurrent protection technique.)
2
RT
I
Connection for the timing resistor that deter-
mines the oscillator frequency.
Use a resistor in the range 5.1 k
Ω to 15 kΩ.
Thus the pin voltage will be about 0.59 V.
3
CT
O
Connection for the timing capacitor that
determines the oscillator frequency.
Use a capacitor in the range 100 to 1 800 pF.
See the "Application Notes, [2] and [3]"
sections later in this document for details on
setting the frequency. Use an oscillator
frequency in the range 20 kHz to 500 kHz.
V
CC
CLM
comp.
50
µA
50
µA
0.1 V
1
S.C.P.
100
RT (V
≈ 0.59 V)
OSC
PWM
V
REF
DTC
2
I
O
2I
O
OSC
comp.
V
REF
To PWM input
3




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