LT1371CR Linear Technology, LT1371CR Datasheet - Page 4

• Manufacturer Part Number: LT1371CR
• Description: IC SWTCHNG REG 3A HI-EFF 7-DD
• Manufacturer: Linear Technology
• Type: Step-Down (Buck), Step-Up (Boost), Inverting, Cuk, Flyback, Forward Converterr

Specifications of LT1371CR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.25 ~ 35 V
• Current - Output: 3A
• Frequency - Switching: 500kHz
• Voltage - Input: 2.7 ~ 25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (7 leads + tab)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

LT1371
TYPICAL PERFORMANCE CHARACTERISTICS
4
1.0
0.9
0.8
0.7
0.2
0.1
0.6
0.5
0.4
0.3
20
18
16
14
12
10
–1
–2
–3
–4
–5
8
6
4
2
0
0
5
4
3
2
1
0
–50
–1
Switch Saturation Voltage
vs Switch Current
0
Shutdown Delay and Threshold
vs Temperature
S/S or SHDN Pin Input Current
vs Voltage
V
SHUTDOWN DELAY
IN
0.4
–25
0
= 5V
0.8
1
SHUTDOWN THRESHOLD
0
SWITCH CURRENT (A)
1.2
TEMPERATURE ( C)
2
25
1.6
VOLTAGE (V)
3
50
2.0
4
100 C
2.4
75
5
–55 C
150 C
2.8
6
100 125 150
W
3.2
7
LT1371 • G04
LT1371 • G01
LT1371 • G07
25 C
3.6
8
U
4.0
9
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
110
100
90
80
70
60
50
40
30
20
10
6
5
4
3
2
1
0
1.5
3.0
2.5
2.0
0.5
1.0
0
0
Switching Frequency
vs Feedback Pin Voltage
Switch Current Limit
vs Duty Cycle
0
–50
Minimum Synchronization
Voltage vs Temperature
10
0.1
f
SYNC
–25
0.2
20
FEEDBACK PIN VOLTAGE (V)
= 700kHz
30
0.3
0
DUTY CYCLE (%)
TEMPERATURE ( C)
40
0.4
25
0.5
50
50
0.6
60
–55 C
70
75
0.7
25 C AND
125 C
0.8
80
100
LT1371 • G02
LT1371 • G08
0.9
90
LT1371 • G05
125
100
1.0
150
–100
–200
–300
2000
1800
1600
1400
1200
1000
400
300
200
100
800
600
400
200
3.0
2.8
2.6
2.4
2.0
1.8
2.2
0
0
–50
–50
Minimum Input Voltage
vs Temperature
Error Amplifier Output Current
vs Feedback Pin Voltage
Error Amplifier Transconductance
vs Temperature
–0.3
–25
–25
FEEDBACK PIN VOLTAGE (V)
125 C
0
0
–0.2
TEMPERATURE ( C)
TEMPERATURE ( C)
25
25
–0.1
50
50
25 C
–55 C
75
75
V
REF
g
100
m
100 125 150
=
LT1371 • G03
125
LT1371 • G06
V (FB)
LT1371 • G09
I (V
0.1
C
)
150