an8041s Panasonic Corporation of North America, an8041s Datasheet - Page 4

• Manufacturer Part Number: an8041s
• Description: Liquid Crystal Backlight Control Ic
• Manufacturer: Panasonic Corporation of North America

AN8041S
4
Pin No.
Bootstrap circuit block
Input standby voltage
Oscillator block
RT terminal voltage
Short-circuit protection block
Input threshold voltage
Input standby voltage
Input latch voltage
Charge current
Comparator threshold voltage
On/off control block
Threshold voltage
Whole device
Total consumption current
Standby current
Electrical Characteristics at V
Terminal Equivalent Circuits
1
2
3
V
V
Parameter
REF
REF
To PWM input
V
CC
Equivalent circuit
OSC
comp.
2
100
RT ( 0.37 V)
DTC S.C.P.
CC
1
Symbol
V
V
I
V
V
CC(SB)
I
V
V
V
12 V, R
I
THPC
STBY
CHG
INCB
THL
CC
TH
RT
IN
2I
I
I
O
O
3
CB
T
15 k , C
V
The reference voltage output terminal
(2.57 V (allowance: 3%)).
Incorporating short-circuit protection against
GND.
RT:
The terminal used for connecting a timing resis-
tor to set oscillator's frequency.
Use a resistance value within the range of 5.1 k
to 30 k .
The terminal voltage is approx. 0.37 V.
CT:
The terminal used for connecting a timing ca-
pacitor to set oscillator's frequency.
Use a capacitance value within the range of 100
pF to 10 000 pF.
For frequency setting method, refer to the
" Application Notes, [3] Function descriptions "
section. Use an oscillation frequency in the range
of 5 kHz to 500 kHz.
70 mA
Conditions
REF
:
T
120 pF, T
Description
V
CC
0.70
Min
2.76
0.8
a
1.2 V
25 C (continued)
Voltage Regulators
CC
0.37
0.75
1.82
Typ
3.9
30
30
2.3
1.0 V
CC
Max
0.80
120
120
1.84
2.0
5.0
5
0.8
Unit
I/O
mV
mV
mA
O
V
V
V
V
V
A
A