LTC3728LEUH#TR Linear Technology, LTC3728LEUH#TR Datasheet - Page 7

• Manufacturer Part Number: LTC3728LEUH#TR
• Description: IC REG SW DUAL 2PH STPDWN 32QFN
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3728LEUH#TR

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 7 V
• Current - Output: 3A
• Frequency - Switching: 250kHz ~ 550kHz
• Voltage - Input: 4.5 ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

TYPICAL PERFORMANCE CHARACTERISTICS
–0.3
–0.4
–0.1
–0.2
0.0
60
20
76
70
80
40
80
78
74
72
0
–50 –25
0
Maximum Current Sense Threshold
vs V
0
Load Regulation
Maximum Current Sense
Threshold vs Temperature
V
SENSE(CM)
RUN/SS
1
1
0
LOAD CURRENT (A)
TEMPERATURE (°C)
= 1.6V
(Soft-Start)
2
V
2
RUN/SS
25
3
50
(V)
3
4
75
FCB = 0V
V
FIGURE 13
IN
4
100
5
= 15V
3728L G13
3728L G10
3728L G17
125
5
6
2.5
2.0
1.5
1.0
0.5
80
76
68
64
60
72
0
4
3
2
1
0
0
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
V
0
Dropout Voltage vs Output Current
(Figure 14)
0
V
V
ITH
OSENSE
OUT
0.5
vs V
1
= 5V
COMMON MODE VOLTAGE (V)
1
= 0.7V
1.0
RUN/SS
OUTPUT CURRENT (A)
2
R
1.5
SENSE
V
2
RUN/SS
R
SENSE
2.0
3
= 0.010Ω
(V)
3
2.5
= 0.015Ω
4
3.0
4
5
3.5
3728L G11
3728L G14
3728L G18
LTC3728L/LTC3728LX
4.0
5
6
–100
1.8
1.6
1.4
1.2
1.0
0.8
0.4
–10
–20
100
–50
0.6
0.2
–30
90
80
70
60
50
40
10
50
30
20
0
0
0
–50
0
0
Current Sense Threshold
vs I
SENSE Pins Total Source Current
RUN/SS Current vs Temperature
V
TH
–25
SENSE
0.5
Voltage
COMMON MODE VOLTAGE (V)
0
TEMPERATURE (°C)
2
1
25
V
ITH
(V)
50
1.5
4
75
2
100
3728L G25
3728L G15
3728L G12
3728lxfe
7
125
2.5
6