LTC1628IG-PG Linear Technology, LTC1628IG-PG Datasheet - Page 6

• Manufacturer Part Number: LTC1628IG-PG
• Description: IC REG SW 2PHASE STEPDOWN 28SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1628IG-PG

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: Adj to 0.8V
• Current - Output: 3A
• Frequency - Switching: 220kHz
• Voltage - Input: 3.5 ~ 30 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

LTC1628/LTC1628-PG
TYPICAL PERFOR A CE CHARACTERISTICS
6
–0.1
–0.2
–0.3
–0.4
V
5V/DIV
5V/DIV
2A/DIV
76
70
0.0
80
78
74
72
RUN/SS
V
–50 –25
I
OUT
OUT
0
Maximum Current Sense
Threshold vs Temperature
Load Regulation
V
V
Soft-Start Up (Figure 13)
IN
OUT
= 15V
= 5V
1
0
TEMPERATURE ( C)
LOAD CURRENT (A)
2
25
5ms/DIV
50
3
75
W
FCB = 0V
V
FIGURE 1
4
IN
100
= 15V
1628 G17
1628 G13
U
125
1628 G19
5
200mV/DIV
2A/DIV
2.5
0.5
2.0
1.5
1.0
V
3
1
0
4
2
I
0
OUT
OUT
0
Dropout Voltage vs Output Current
(Figure 13)
0
V
V
V
ITH
OSENSE
V
V
LOAD STEP = 0A TO 3A
Burst Mode OPERATION
OUT
Load Step (Figure 13)
IN
OUT
0.5
= 15V
vs V
= 5V
1
= 5V
1.0
= 0.7V
OUTPUT CURRENT (A)
RUN/SS
2
R
1.5
SENSE
V
RUN/SS
R
SENSE
2.0
20 s/DIV
3
= 0.010
(V)
2.5
= 0.015
4
3.0
5
3.5
1628 G18
1628 G14
1628 G20
4.0
6
200mV/DIV
–100
2A/DIV
–50
100
1.8
1.6
1.4
1.2
1.0
0.8
0.4
0.6
0.2
V
50
I
0
0
OUT
OUT
–50
0
RUN/SS Current vs Temperature
SENSE Pins Total Source Current
Load Step (Figure 13)
V
V
LOAD STEP = 0A TO 3A
CONTINUOUS MODE
IN
OUT
V
–25
= 15V
SENSE
= 5V
COMMON MODE VOLTAGE (V)
0
TEMPERATURE ( C)
2
25
20 s/DIV
50
4
75
100
1628 G25
1628 G15
1628fb
1628 G21
125
6