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E-L4981AD View Datasheet(PDF) - STMicroelectronics

Part Name
Description
View to exact match
E-L4981AD
ST-Microelectronics
STMicroelectronics ST-Microelectronics
E-L4981AD Datasheet PDF : 16 Pages
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L4981A - L4981B
ELECTRICAL CHARACTERISTICS (Unless otherwise specified VCC = 18V, COSC = 1nF,
ROSC = 24K, CSS = 1µF, VCA-OUT = 3.5V, VISENSE = 0V, VLFF = VREF, IAC = 100µA, VRMS = 1V,
VFEED = GND, VIPK = 1V, VOVP = 1V, TJ = 25°C
Symbol
Prameter
Test Condition
ERROR AMPLIFIER SECTION
VIO
Input Offset Voltage
–25°C < TJ < 85°C
IIB
Input Bias Current
VFEED = 0V
Open Loop Gain
V13H
Output High voltage
VFEED = 4.7V
IVA-OUT = -0.5mA
V13L
Output Low Voltage
VFEED = 5.5V
IVA-OUT = 0.5mA
-I13
Output Source Current
VFEED = 4.7V; VVA-OUT = 3.5V
I13
Output Sink Current
REFERENCE SECTION
VFEED = 5.5V; VVA-OUT = 3.5V
Vref
Vref
Vref
Iref sc
Reference Output Voltage
Load Regulation
Line Regulation
Short Circuit Current
–25°C < TJ < 85°C
Tj = 25°C Iref = 0
1mA Iref 10mA
–25°C < TJ < 85°C
12V VCC 19V
–25°C < TJ < 85°C
Vref = 0V
OSCILLATOR SECTION
fosc
Initial Accuracy
Frequency Stability
Tj = 25°C
12V VCC 19V
–25°C < TJ < 85°C
Vsvp
Ramp Valley to Peak
I18C
Charge Current
VCOSC = 3.5V
I18D
Discharge Current
VCOSC = 3.5V
V18
Ramp Valley Voltage
SYNC SECTION (Only for L4981A)
tW
Output Pulse Width
50% Amplitude
I16
Sink Current with Low Output
VSYNC = 0.4V
Voltage
VCOSC = 0V
-I16
Source Current with High Output VSYNC = 4.5V
Voltage
VCOSC = 6.7V
V16L
V16H
Low Input Voltage
High Input Voltage
td
Pulse for Synchronization
FREQUENCY MODULATION FUNCTION (Only for L4981B)
f18max
f18min
Maximum Oscillation Frequency
Minimum Oscillator Frequency
VFREQ-MOD = 0V (Pin 16) Ifreq = 0
IFREQ-MOD = 360µA (Pin 16)
VVRMS = 4V (Pin 7)
IFREQ-MOD = 180µA (Pin 16)
VVRMS = 2V (Pin 7)
SOFT START SECTION
ISS
Soft Start Source Current
VSS = 3V
V12sat
Output Saturation Voltage
V3 = 6V, ISS = 2mA
Min.
-500
70
5.5
2
4
4.97
5.01
20
85
80
4.7
0.45
0.9
0.3
0.4
1
3.5
800
85
60
Typ.
-50
100
6.5
0.4
10
20
5.1
5.1
3
3
30
100
100
5
0.55
11.5
1.15
0.8
0.8
6
100
74
76
100
0.1
Max.
±8
500
7.5
1
5.23
5.19
15
10
50
115
120
5.3
0.65
1.4
0.9
115
140
0.25
Unit
mV
nA
dB
V
V
mA
mA
V
V
mV
mV
mA
KHz
KHz
V
mA
mA
V
µs
mA
mA
V
V
ns
KHz
KHz
KHz
µA
V
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