L4981A - L4981B
ELECTRICAL CHARACTERISTICS
(continued)
Symbol
SUPPLY VOLTAGE
V
CC
V
thr
V
3Hys
I
3
t
d
V
th
t
d
I
ipk
Operating Supply Voltage
Rising Threshold Voltage
Hysteresis
Input Bias Current
Propagation delay to output
Threshold Voltage
Propagation delay to Output
Current Source Generator
V
OCP
= V
thr
-0.2V
V
IPK
= -0.1V
V
IPK
= -0.1V
only for L4981A
only for L4981B
65
0.4
85
V
OVP
= V
thr
+100mV
V
ref
-20mV
180
5.1
250
0.05
1
19.5
V
ref
+20mV
320
1
2
±30
0.9
105
5
±2
-500
70
68
6.2
0.9
2
2
10
10
0.5
11.5
12.5
50
30
13
16
0.3
8
12
20
14.5
9
Pin 15 to V
CC
= 220K
Pin15 to GND = 33K
V
6
= 1.6V
V
6
= 5.3V
V
I
Input Voltage Range
1.6
10.6
25
15.5
10
12
150
100
19
0.5
12
16
30
16.5
11
13.4
0.8
50
100
90
500
V
V
mV
µ
A
µ
s
mV
µs
µA
µA
mV
nA
dB
dB
V
V
mA
mA
V
V
ns
ns
V
mA
mA
mA
V
V
V
V
OVER VOLTAGE PROTECTION COMPARATOR
Parameter
Test Condition
Min.
Typ.
Max.
Unit
OVER CURRENT PROTECTION COMPARATOR
Leakage Current
I
L
CURRENT AMPLIFIER SECTION
V
offset
I
9bias
SVR
V
5H
V
5L
-I
5
I
5
V
20L
V
20H
t
r
t
f
V
GDRV
I
19start
I
19on
I
19
V
CC
V
th ON
V
th OFF
Input Offset Voltage
Input Bias Current
Open Loop Gain
Supply Voltage Rejection
Output High Voltage
Output Low Voltage
Output Source Current
Output Sink Current
Output Voltage Low
Output Voltage High
Output Voltage Rise Time
Output Voltage Fall Time
Voltage Clamp
Supply Current before start up
Supply Current after turn on
Operating Supply Current
Zener Voltage
Turn on Threshold
Turn off Threshold
Programmable Turn-on Threshold
LOAD FEED FORWARD
I
LFF
Bias Current
V
MULT OUT
= V
SENSE
= 3.5V
V
SENSE
= 0V
1.1V
≤
V
CA OUT
≤
6V
12V
≤
V
CC
≤
19V
V
MULT OUT
= 3.5V V
SENSE
= 3.5V
V
MULT OUT
= 200mV
I
CA OUT
= -0.5mA, V
IAC
= 0V
V
MULT OUT
= -200mV
I
CA OUT
= 0.5mA, V
IAC
= 0V
V
MULT OUT
= 200mV,
V
IAC
= 0V, V
CA-OUT
= 3.5V
I
SINK
= 250mA
I
SOURCE
= 250mA
V
CC
= 15V
C
OUT
= 1nF
C
OUT
= 1nF
I
SOURCE
= 0mA
V
CC
= 14V
V
IAC
= 0V, V
COSC
= 0,
Pin17 = Open
Pin20 = 1nF
(*)
OUTPUT SECTION
TOTAL STANDBY CURRENT SECTION
UNDER VOLTAGE LOCKOUT SECTION
70
200
140
300
5.3
µ
A
µA
V
(*) Maximum package power dissipation limits must be observed.
5/17
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