LT3434IFE Linear Technology, LT3434IFE Datasheet - Page 5

• Manufacturer Part Number: LT3434IFE
• Description: IC REG SW BUCK 3A 200KHZ 16TSSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT3434IFE

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.25 ~ 54 V
• Current - Output: 3A
• Frequency - Switching: 200kHz
• Voltage - Input: 3.3 ~ 60 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

TYPICAL PERFOR A CE CHARACTERISTICS
300
900
800
700
600
500
400
300
200
100
500
450
400
350
250
200
150
100
6.0
5.5
5.0
4.5
4.0
3.5
3.0
50
0
0
–50
0.5
5
Switch Peak Current Limit
Switch On Voltage (V
Burst Mode Threshold vs Input
Voltage
V
L = 33µH
C
OUT
OUT
–25
= 3.3V
= 100µF
1.0
BURST MODE EXIT
(INCREASING LOAD)
–0
INPUT VOLTAGE (V)
TEMPERATURE (°C)
LOAD CURRENT (A)
10
1.5
25
BURST MODE ENTER
(DECREASING LOAD)
50
T
2.0
J
= 125°C
CESAT
15
75
T
J
W
T
= –40°C
)
2.5
J
= 25°C
100
3434 G21
3434 G13
3434 G10
U
125
3.0
20
150
125
100
700
650
600
550
500
450
400
350
300
250
200
75
50
45
40
35
30
25
20
15
10
50
25
0
5
0
–50
0
0
Minimum On Time for Continuous
Mode Operation
Soft-Start Threshold
vs FB Voltage
Supply Current vs Input Voltage
T
LOAD CURRENT = 2A
J
LOAD CURRENT = 1A
LOAD CURRENT = 0.5A
= 25°C
–25
0.2
10
–0
INPUT VOLTAGE (V)
TEMPERATURE (°C)
0.4
20
FB VOLTAGE (V)
25
0.6
30
50
0.8
40
SOFT-START
DEFEATED
75
V
OUT
1.0
50
100
= 3.3V
3434 G20
3434 G11
3434 G22
125
1.2
60
250
200
150
100
7.5
6.5
6.0
5.5
5.0
4.0
7.0
4.5
3.5
3.0
50
60
50
40
30
20
10
0
0
0
Oscillator Frequency
vs FB Voltage
0
0
Minimum Input Voltage
Boost Current vs Load Current
T
RUNNING
J
= 25°C
0.5
0.2
0.5
START-UP
SWITCH CURRENT (A)
LOAD CURRENT (A)
1.0
1.0
0.4
START-UP
FB VOLTAGE (V)
1.5
0.6
1.5
RUNNING
V
LT3434
OUT
2.0
2.0
0.8
V
OUT
= 3.3V
= 5V
2.5
1.0
2.5
3434 G19
3434 G12
3434 G23
3434fb
5
3.0
3.0
1.2