I
NTEGRATED
C
IRCUITS
D
IVISION
LIA135 / LIA136
4 www.ixysic.com R01
1.4 Electrical Characteristics
1 Reference voltage measured at Pin FB under the specified conditions.
2 Deviation parameters V
REF(DEV)
and I
IB(DEV)
are defined as the difference between the minimum and maximum values obtained over the rated temperature range.
3 With two external resistors, the total shunt transconductance of the circuit is defined as:
4 See Figure 9: Operational Template on page 6.
5 Common mode transient immunity at Output = High is the maximum positive dV
cm
/dt on the rising edge of the common mode impulse signal, V
cm
, to ensure the
output will remain high. Common mode transient immunity at Output = Low is the maximum negative dV
cm
/dt on the falling edge of the common pulse signal, V
cm
,
to ensure the output will remain low.
Parameter Symbol Conditions Min Typ Max Unit
Input Characteristics @ 25°C (Unless Otherwise Specified)
Input voltage
V
LED
LIA135: T
A
=-40°C to +85°C
1.6 - 10 V
LIA136: T
A
=-40°C to +110°C
LED forward voltage
V
F
V
FB
=V
COMP
=GND, I
LED
=5mA (Fig. 1)
0.9 - 1.4 V
Reference voltage
1
V
REF
V
LED
=1.6V, I
LED
=10mA (Fig. 2)
V
T
A
=25°C
1.293 1.299 1.305
LIA135: T
A
=-40°C to +85°C
1.286 1.299 1.312
LIA136: T
A
=-40°C to +110°C
1.280 1.299 1.318
Deviation of V
REF
over temperature
2
V
REF(DEV)
V
LED
=1.6V, I
LED
=10mA, (Fig. 2)
mV
LIA135: T
A
=-40°C to +85°C
-312
LIA136: T
A
=-40°C to +110°C
-621
Ratio of V
REF
variation to V
LED
change V
REF
/V
LED
1.6V < V
LED
< 10V, I
LED
=10mA (Fig. 2)
- -0.37 -2.7 mV/V
FB input bias current
I
IB
V
LED
=1.6V, I
LED
=10mA (Fig. 2)
0.1 0.34 0.5 A
Deviation of I
IB
over temperature
2
I
IB(DEV)
V
LED
=1.6V, I
LED
=10mA, (Fig. 2)
A
LIA135: T
A
=-40°C to +85°C
- 0.35 0.55
LIA136: T
A
=-40°C to +110°C
-0.40.6
Quiescent bias current
I
Q
V
LED
=1.6V, V
FB
< V
REF,
I
F
=0mA (Fig. 5)
- 75 100 A
Error amplifier Off-State current
I
LED(off)
V
LED
=10V, V
FB
=0V (Fig. 3)
0.001 0.1 A
Shunt transconductance
3
g
m
(I
LED
/V
FB
)V
LED
=1.6V, I
LED
= 0.2mA to 10mA @ f=1kHz (Fig. 2)
-1-S
Output Characteristics @ 25°C (Unless Otherwise Specified)
Collector dark current
I
CE
V
CE
=10V, R
B
=1M (Fig. 4)
- 0.3 50 nA
Collector-emitter breakdown voltage
BV
CEO
I
C
=1mA
20 - - V
Emitter-collector breakdown voltage
BV
ECO
I
E
=100A
7--V
Transfer Characteristics @ 25°C (Unless Otherwise Specified)
Current transfer ratio CTR
I
LED
=5mA, V
CE
=5V, R
B
=1M (Fig. 5)
500 - 2000 %
Bandwidth
B
W
(Fig. 7) - 10 - kHz
Collector-emitter saturation voltage
V
CE(sat)
I
LED
=10mA, I
C
=2.5mA, R
B
=1M (Fig. 5)
0.099 0.5 V
Minimal Operating Point Output Current
4
I
C(min)
V
LED
=10V (Fig. 6)
LIA135: V
FB
=1.258V, T
A
= -40°C to +85°C
-110
A
LIA136: V
FB
=1.252V, R
B
=1M, T
A
= -40°C to +110°C
-110
Full-on Operating Point Output Current
4
I
C(on)
V
LED
=1.6V, (Fig. 6)
LIA135: V
FB
=1.307V, T
A
= -40°C to +85°C
10 - -
mA
LIA136: V
FB
=1.313V, R
B
=1M, T
A
= -40°C to +110°C
10 - -
Common Mode Transient Immunity Characteristics @ 25°C (Unless Otherwise Specified)
Output = High
5
|CM
H
|I
LED
=0mA, V
CM
=10V
PP
, R
C
=2.2k (Fig. 8)
LIA135: - 5 -
V/ns
LIA136: R
B
=1M, C
B
=100pF
-20-
Output = Low
5
|CM
L
|I
LED
=10mA, V
CM
=10V
PP
, R
C
=2.2k (Fig. 8)
LIA135: - 5 -
V/ns
LIA136: R
B
=1M, C
B
=100pF
-20-
g
m
g
m
R2
R1 R2+
----------------------
=
