LTC3890EGN-1#TRPBF Linear Technology, LTC3890EGN-1#TRPBF Datasheet - Page 6

• Manufacturer Part Number: LTC3890EGN-1#TRPBF
• Description: IC BUCK SYNC ADJ DUAL 28SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3890EGN-1#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 24 V
• Frequency - Switching: 350kHz ~ 535kHz
• Voltage - Input: 4 ~ 60 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -

LTC3890-1
TYPICAL PERFORMANCE CHARACTERISTICS
6
300
250
200
150
100
–40
–20
50
80
60
40
20
80
70
40
30
20
10
60
50
0
0
0
5
0
0
Total Input Supply Current
vs Input Voltage
Maximum Current Sense Voltage
vs I
Foldback Current Limit
5% DUTY CYCLE
10
FORCED CONTINUOUS MODE
100
0.2
TH
300μA LOAD
PULSE-SKIPPING MODE
15
Voltage
OPERATION
Burst Mode
200
20
FEEDBACK VOLTAGE (MV)
0.4
INPUT VOLTAGE (V)
NO LOAD
25
300
30 35 40 45 50 55 60 65
0.6
V
ITH
400 500
(V)
0.8
V
FIGURE 13 CIRCUIT
OUT
= 3.3V
1.0
600
1.2
700
38901 G10
38901 G13
38901 G16
1.4
800
–100
800
700
600
500
400
300
200
100
6.0
5.8
5.6
5.4
5.2
5.0
4.8
4.6
4.4
4.2
4.0
80
75
70
65
60
55
50
45
40
35
30
0
–75
–75
0
EXTV
Voltages vs Temperature
SENSE
Quiescent Current vs Temperature
V
IN
–50 –25
–50
V
= 12V
SENSE
CC
5
–25
–
Switchover and INTV
Pin Input Bias Current
COMMON MODE VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
10
EXTV
EXTV
25
25
INTV
CC
CC
15
50
50
FALLING
RISING
CC
75
75 100
20
100 125 150
CC
125 150
38901 G14
38901 G17
38901 G11
25
5.50
5.25
5.00
4.75
4.50
4.25
4.00
5.0
4.5
4.0
3.5
5.5
3.0
90
85
80
75
70
65
60
0 5
0
0
Maximum Current Sense
Threshold vs Duty Cycle
INTV
INTV
V
IN
10
= 12V
10
CC
CC
20
20
15
Line Regulation
vs Load Current
LOAD CURRENT (mA)
30
20
INPUT VOLTAGE (V)
DUTY CYCLE (%)
EXTV
25
40 50
40
EXTV
CC
30 35 40 45 50 55 60 65
EXTV
CC
= 8.5V
= 5V
60
60
CC
= 0V
70
I
LOAD
80
80
= 10mA
38901 G12
38901 G15
90
38901 G18
38901fa
100
100