LT1245IS8 Linear Technology, LT1245IS8 Datasheet - Page 5

• Manufacturer Part Number: LT1245IS8
• Description: IC PWM CURRENT MODE HI-SPD 8SOIC
• Manufacturer: Linear Technology

Specifications of LT1245IS8

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 500kHz
• Duty Cycle: 48%
• Voltage - Supply: 8.2 V ~ 25 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 8-SOIC (3.9mm Width)
• Frequency-max: 500kHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

TYPICAL PERFOR
5.05
5.04
5.03
5.02
5.01
5.00
4.99
4.98
4.97
4.96
4.95
100
–20
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
80
60
40
20
0
0
–50
10
0
Error Amplifier Open-Loop Gain
and Phase
Reference Voltage
High Level Output
Saturation Voltage
I
O
–25
= 1mA
100
OUTPUT SOURCE CURRENT (mA)
GAIN
0
TEMPERATURE ( C)
1k
FREQUENCY (Hz)
25
10k
100
50
V
V
R
T
100k
CC
O
A
PHASE
L
T
T
T
= 100k
= 25 C
= 2.0V - 4.0V
J
J
J
75
= 15V
= –55 C
= 25 C
= 125 C
W
LT1241 • TPC13
LT1241 • TPC10
LT1241 • TPC16
1M
100
A
U
10M
200
125
CE
225
180
135
90
45
0
–45
C
HARA TERISTICS
140
120
100
1.0
0.5
80
60
40
20
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
0
–50
0
Reference Short-Circuit Current
Low Level Output
Saturation Voltage
–50
Current Sense Clamp Voltage
–25
–25
OUTPUT SINK CURRENT (mA)
C
0
TEMPERATURE ( C)
0
TEMPERATURE ( C)
T
25
J
= 25 C
25
100
50
50
T
J
75
= 125 C
T
J
75
= –55 C
LT1241 • TPC09
LT1241 • TPC14
100
LT1241 • TPC12
100
125
200
125
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
1.2
1.0
0.8
0.6
0.4
0.2
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
–50
Feedback Pin Input Voltage
0
Current Sense Input Threshold
0
Low Level Output Saturation
Voltage During Undervoltage
Lockout
–25
ERROR AMP OUTPUT VOLTAGE (V)
1
T
OUTPUT SINK CURRENT (mA)
T
J
J
= 125 C
LT1241 Series
=125 C
0
TEMPERATURE ( C)
2
25
T
3
5
J
= –55 C
T
50
J
= 25 C
T
4
J
T
= 25 C
75
J
= –55 C
LT1241 • TPC11
LT1241 • TPC17
LT1241 • TPC15
100
5
5
125
10
6