LT1248IS Linear Technology, LT1248IS Datasheet - Page 4

• Manufacturer Part Number: LT1248IS
• Description: IC PFC CTRLR AVERAGE CURR 16SOIC
• Manufacturer: Linear Technology

Specifications of LT1248IS

• Mode: Average Current
• Frequency - Switching: 300kHz
• Current - Startup: 250µA
• Voltage - Supply: 15.5 V ~ 27 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LT1248
TYPICAL PERFOR
4
11
10
9
8
7
6
5
4
3
2
1
0
10
Supply Current vs Supply Voltage
T
T
J
J
= –55 C
= 125 C
7.536
7.524
7.512
7.500
7.488
7.476
7.464
7.452
7.440
7.428
–20
100
SUPPLY VOLTAGE (V)
80
60
40
20
0
–75
10
Reference Voltage vs
Temperature
Voltage Amplifier Open-Loop
Gain and Phase
–50
T
J
21
100
= 25 C
JUNCTION TEMPERATURE ( C)
–25 0
1k
FREQUENCY (Hz)
PHASE
W
GAIN
25
10k
A
50
1248 G05
U
100k
32
75
CE
100 125
1M
C
1248 G03
18.5
18.0
17.5
17.0
16.5
16.0
15.5
15.0
14.5
14.0
13.5
13.0
1148 G01
HARA TERISTICS
10M
150
GTDR Source Current
0
0
–20
–40
–60
–80
–100
–120
V
CC
= 18V
– 60
C
SOURCE CURRENT (mA)
T
T
–120
J
T
J
J
= 125 C
= –55 C
= 25 C
–180
–20
100
300
150
80
60
40
20
0
0
–240
10
Current Amplifier Open-Loop
Gain and Phase
Multiplier Current
0
1248 G06
100
VA
VA
–300
OUT
OUT
VA
= 6V
= 6.5V
1k
FREQUENCY (Hz)
OUT
PHASE
GAIN
= 7V
I
AC
10k
250
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
( A)
0
GTDR Sink Current
0
100k
T
A
= 125 C
T
A
60
= –55 C
T
A
1M
= 25 C
SINK CURRENT (mA)
1148 G02
1248 G04
120
10M
500
VA
VA
VA
VA
VA
VA
VA
0
–20
–40
–60
–80
–100
–120
OUT
OUT
OUT
OUT
OUT
OUT
OUT
180
= 5.5V
= 5V
= 4.5V
= 4V
= 3.5V
= 3V
= 2.5V
240
1248 G07
300