L4981A STMicroelectronics, L4981A Datasheet - Page 6

• Manufacturer Part Number: L4981A
• Description: IC PFC CTRLR AVERAGE CURR 20DIP
• Manufacturer: STMicroelectronics

Specifications of L4981A

• Mode: Average Current
• Frequency - Switching: 100kHz
• Current - Startup: 100µA
• Voltage - Supply: 14.5 V ~ 19.5V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 20-DIP (0.300", 7.62mm)
• Switching Frequency: 115 KHz
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• For Use With: 497-5523 - EVAL BOARD FOR L4981
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-3634

L4981A - L4981B
ELECTRICAL CHARACTERISTICS (continued)
I
if V
where: K1 = 1V
Figure 1: MULTI-OUT vs. I
6/16
MULT OUT
MULTIPLIER SECTION
Symbol
LFF
K
= V
V
REF;
LFFD
K
Multipler Output Current
Multiplier Gain
I
AC
= 5.1V)
I
MULT OUT
V
VA
Prameter
OUT
I
AC
AC
(V
V
1.28
VA
RMS
V
V
OUT
VRMS
VRMS
= 1.7V;
0.8 V
1.28
2
2
K1
LFF
V
V
I
V
V
I
V
V
I
V
V
I
V
V
I
V
V
C
V
V
I
V
V
I
AC
AC
AC
AC
AC
AC
AC
VA-OUT
MULTOUT
VA-OUT
MULTOUT
VA-OUT
MULTOUT
VA-OUT
MULTOUT
VA-OUT
MULTOUT
VA-OUT
MULTOUT
VA-OUT
MULTOUT
VA-OUT
MULTOUT
OSC
= 50 A, C
= 200 A, C
= 100 A, C
= 100 A, C
= 100 A, C
= 200 A, C
= 0, C
= 0V, I
1.28
= 4V, V
= 4V, V
= 2V, V
= 2V, V
= 4V, V
= 4V, V
= 4V, V
= 2V, V
Test Condition
OSC
= 0, V
= 0, V
= 0, V
= 0, V
= 0, V
= 0, V
= 0, V
= 0, V
Figure 2: MULTI-OUT vs. I
AC
OSC
= 0V
OSC
OSC
OSC
OSC
OSC
= 200 A
RMS
RMS
RMS
RMS
RMS
RMS
RMS
RMS
LFF
LFF
LFF
LFF
LFF
LFF
LFF
LFF
= 0V
= 0V
= 0V
= 0V
= 0V
= 0V
= 5.1V
= 5.1V
= 5.1V
= 5.1V
= 5.1V
= 2.5V
= 5.1V
= 5.1V
= 2V,
= 2V,
= 2V,
= 4V,
= 4V,
= 2V,
= 4V
= 4V,
V
LFFD
= 5.1V)
Min.
100
20
10
10
20
20
-2
2
AC
Typ.
0.37
135
(V
5.5
35
20
22
37
39
0
RMS
= 2.2V;
Max.
170
52
30
11
34
54
54
2
Unit
A
A
A
A
A
A
A
A