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

• Manufacturer Part Number: LTC3890EGN-1#PBF
• Description: IC BUCK SYNC ADJ 25A DUAL 28SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3890EGN-1#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 24 V
• Current - Output: 25A
• Frequency - Switching: 50kHz ~ 900kHz
• Voltage - Input: 4 ~ 60 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Primary Input Voltage: 12V
• No. Of Outputs: 2
• Output Voltage: 24V
• Output Current: 25A
• No. Of Pins: 32
• Operating Temperature Range: -40°C To +125°C
• Msl: MSL 1 - Unlimited
• Supply Voltage Min: 4V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC3890
TYPICAL PERFORMANCE CHARACTERISTICS
6
–40
300
250
200
150
100
–20
80
60
80
70
60
50
40
30
20
10
50
40
20
0
0
0
0
0
5
Total Input Supply Current
vs Input Voltage
Maximum Current Sense Voltage
vs I
Foldback Current Limit
5% DUTY CYCLE
FORCED CONTINUOUS MODE
10
100
TH
0.2
300μA LOAD
PULSE-SKIPPING MODE
15
Voltage
OPERATION
200
Burst Mode
FEEDBACK VOLTAGE (MV)
20
0.4
I
LIM
INPUT VOLTAGE (V)
NO LOAD
25
300
= FLOAT
30 35 40 45 50 55 60 65
0.6
V
I
LIM
ITH
400 500
(V)
= INTV
0.8
V
FIGURE 13 CIRCUIT
OUT
I
I
LIM
I
LIM
LIM
I
CC
1.0
= 3.3V
LIM
= INTV
= GND
600
= GND
= FLOAT
1.2
CC
700
3890 G16
3890 G10
3890 G13
800
1.4
–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
50
80
75
70
65
60
55
45
40
35
30
0
–75
–75
0
EXTV
Voltages vs Temperature
SENSE
Quiescent Current vs Temperature
V
IN
–50
–50 –25
V
SENSE
= 12V
CC
5
–25
–
Switchover and INTV
Pin Input Bias Current
COMMON MODE VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
0
10
0
EXTV
EXTV
25
25
INTV
CC
CC
15
50
50
FALLING
RISING
CC
75 100
75
20
100 125 150
CC
125 150
3890 G14
3890 G11
25
3890 G17
5.50
5.25
5.00
4.75
4.50
4.25
4.00
5.5
5.0
4.5
4.0
3.5
3.0
30
20
80
70
60
50
40
0 5
0
0
INTV
Maximum Current Sense
Threshold vs Duty Cycle
INTV
V
IN
10
= 12V
10
CC
CC
20
20
15
Line Regulation
vs Load Current
I
I
LIM
LIM
LOAD CURRENT (mA)
30
I
20
INPUT VOLTAGE (V)
LIM
DUTY CYCLE (%)
EXTV
= INTV
= FLOAT
25
40 50
40
= GND
EXTV
CC
30 35 40 45 50 55 60 65
EXTV
CC
= 8.5V
CC
= 5V
60
60
CC
= 0V
70
I
LOAD
80
80
= 10mA
90
3890 G12
3890 G15
3890 G18
3890fa
100
100