LT3980EDE#TRPBF Linear Technology, LT3980EDE#TRPBF Datasheet - Page 4

• Manufacturer Part Number: LT3980EDE#TRPBF
• Description: IC SWITCHING REG STP-DN 2A 14DFN
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT3980EDE#TRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.79 ~ 52.2 V
• Current - Output: 2A
• Frequency - Switching: 100kHz ~ 2.4MHz
• Voltage - Input: 3.6 ~ 58 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LT3980
TYPICAL PERFORMANCE CHARACTERISTICS
4
130
110
3.5
3.0
2.5
2.0
90
85
80
75
70
65
60
55
50
90
70
50
30
10
0
0
No-Load Supply Current
Maximum Load Current,
V
5 10
Effi ciency, V
f = 400kHz
D = DIODES, INC. SBR3U100LP
OUT
10
= 5V
15
0.5
20
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
V
V
V
20
IN
IN
IN
25
OUT
= 12V
= 24V
= 48V
I
MINIMUM
LOAD
TYPICAL
30
= 3.3V
30
1
35
(A)
40
40
45
1.5
V
OUT
50
50
= 3.3V
3980 G04
55
3980 G01
3980 G07
60
60
2
400
350
300
250
200
150
100
5.0
4.5
4.0
3.5
3.0
2.5
2.0
50
95
90
85
80
75
70
65
60
55
50
0
–50
0
0
Effi ciency, V
Switch Current Limit
No-Load Supply Current
CATCH DIODE: DIODES, INC. PDS360
V
V
f = 400kHz
D = DIODES, INC. SBR3U100LP
IN
OUT
–25
= 12V
= 3.3V
20
0.5
0
V
V
V
INCREASED SUPPLY
CURRENT DUE TO CATCH
DIODE LEAKAGE AT
HIGH TEMPERATURE
IN
TEMPERATURE (°C)
IN
IN
DUTY CYCLE (%)
OUT
= 12V
= 24V
= 48V
25
40
MINIMUM
TYPICAL
I
LOAD
= 5V
50
1
(A)
60
75
100
1.5
80
125
3980 G05
3980 G08
3980 G02
T
150
A
100
2
= 25°C unless otherwise noted.
3.5
3.0
2.5
2.0
5.5
4.5
3.5
2.0
88
84
82
80
72
6.5
6.0
5.0
4.0
3.0
2.5
86
78
76
74
0.20
–50
5 10
Effi ciency vs Switching Frequency
Maximum Load Current,
V
Switch Current Limit
V
V
I
OUT
OUT
IN
OUT
0.40
–25
= 12V
= 2A
= 5V
SWITCHING FREQUENCY (MHz)
= 3.3V
15
0.60
0
20
0.80
DUTY CYCLE = 10%
INPUT VOLTAGE (V)
TEMPERATURE (°C)
25
25
1.00
MINIMUM
TYPICAL
30
50
1.20
35
75
40
1.40
45
100
1.60
50
125
1.80
3980 G03
55
3980 G06
3980 G09
2.00
150
60
0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
3980f