IL3843
ELECTRICAL CHARACTERISTICS
(Vcc=15V unless otherwise noted)
Characteristics
REFERENCE SECTION
Reference Output Voltage (I
O
=1.0mA, V
CC
=15V,T
A
=25±10°C)
(I
O
=1.0mA, V
CC
=15V,T
A
= Tlow to Thigh)
Line Regulation
(V
CC
=12V to 25V,T
A
=Tlow to Thigh)
Load Regulation (I
O
=1.0 to 20mA,T
A
=Tlow to Thigh)
Total Output Variation over Line,Load,Temperature (Note1)
(V
CC
=12V, I
O
=1.0mA,T
A
=Tlow to Thigh)
(V
CC
=25V, I
O
=20mA,T
A
=Tlow to Thigh)
Output Short Circuit Current (V
CC
=15V)
Symbol
Min
4.9
4.865
Max
5.1
5.135
20
25
4.82
-30
47
46
5.18
-180
57
60
1.0
7.5
7.2
2.42
65
0.7
60
2.0
-0.5
5.0
9.3
9.5
2.58
-2.0
Unit
V
ref
Reg
line
Reg
load
Vfinal
I
SC
f
osc
Δf
osc
/ΔV
V
mV
mV
V
mA
kHz
%
OSCILLATOR SECTION
Frequency (V
CC
=15V,Tj=25°C,R
T
=10k,C
T
=3.3nF)
(V
CC
=15V, T
A
=Tlow to Thigh,R
T
=10k,C
T
=3.3nF)
Frequency Change with Voltage
(V
CC
=12V to 25V, T
A
=Tlow to Thigh,R
T
=10k,C
T
=3.3nF)
Discharge Current (Vosc=2.0V, V
CC
=15V)
Tj=25°C
T
A
=Tlow to Thigh
Idisch
V
FB
I
IB
A
VOL
BW
PSRR
I
Sink
I
Source
V
OH
V
OL
mA
V
µA
dB
MHz
dB
mA
ERROR AMPLIFIER SECTION
Voltage Feedback Input (V
O
=2.5V,V
CC
=15V, T
A
=Tlow to Thigh)
Input Bias Current (V
FB
=2.7V,V
CC
=15V, T
A
=Tlow to Thigh)
Open Loop Voltage Gain
(V
O
=2.0V to 4.0V,V
CC
=15V, T
A
=Tlow to Thigh)
Unity Gain Bandwidth (V
CC
=15V, T
A
=Tlow to Thigh)
Power Supply Rejection Ratio
(V
CC
=12V to 25V, Vo=3.0V, T
A
=Tlow to Thigh)
Output Current
Sink (V
O
=1.1V,V
FB
=2.7V, V
CC
=15V, T
A
=Tlow to Thigh)
Source (V
O
=5.0V,V
FB
=2.3V, V
CC
=15V, T
A
=Tlow to Thigh)
Output Voltage Swing
High State (V
FB
=2.3V, V
CC
=15V,R
L(GND)
=15k, T
A
=Tlow to Thigh)
Low State (V
FB
=2.7V, V
CC
=15V,R
L(5.0)
=15k, T
A
=Tlow to Thigh)
1.1
V
CURRENT SENSE SECTION
Current Sense Input Voltage Gain
(V
FB
=0V, V
CC
=15V, T
A
=Tlow to Thigh)
Maximum Current Sense Input Threshold
(V
FB
=0V, V
CC
=15V, T
A
=Tlow to Thigh)
Input Bias Current (V
CC
=15V, T
A
=Tlow to Thigh)
Propagation Delay (Current Sense Input to Output)
(V
CC
=15V, T
A
=Tlow to Thigh)
Av
Vth
I
IB
t
PLH
2.85
0.9
3.15
1.1
-10
300
V/V
V
µA
ns
2011, February, Rev. 03
IKSEMICON [ IK SEMICON CO., LTD ]
