LTC3731HG Linear Technology, LTC3731HG Datasheet - Page 6

• Manufacturer Part Number: LTC3731HG
• Description: IC REG SW SYNC 3PH STPDWN 36SSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3731HG

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 6 V
• Frequency - Switching: 225kHz ~ 680kHz
• Voltage - Input: 4 ~ 36 V
• Operating Temperature: -40°C ~ 140°C
• Mounting Type: Surface Mount
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -
• Power - Output: -
• Lead Free Status / Rohs Status: Not Compliant

LTC3731H
Typical perForMance characTerisTics

4
3
2
0
5
1
80
70
60
50
40
30
20
10
80
70
60
50
40
30
20
10
–50
0
0
Short-Circuit Arming and Latchoff
vs Temperature
PERCENTAGE OF NOMINAL OUTPUT VOLTAGE (%)
0
0
Maximum I
Percentage of Nominal Output
vs Peak I
ARMING
LATCHOFF
–25
10
1
20
0
TEMPERATURE (°C)
SENSE
30
V
RUN/SS
25
SENSE
2
40
(Foldback)
50
VOLTAGE (V)
50
3
vs V
75
60
RUN/SS
4
100
70
80
125
3731H G10
5
3731H G16
3731H G13
90
150
100
6
2.4
1.2
0.8
2.8
2.0
1.6
0.4
0
–50
100
Supply Current vs Temperature
75
50
25
98
96
94
90
92
V
0
–50
CC
–25
0
Maximum Current Sense
Threshold vs Duty Factor
Maximum Duty Factor
vs Temperature
= 5V
–25
0
20
TEMPERATURE (°C)
0
25
TEMPERATURE (°C)
DUTY FACTOR (%)
25
40
50
50
75
60
75
100
V
PLLFLTR
100
125
3731H G11
80
125
3731H G17
= 0V
3731H G14
150
100
80
60
40
20
0
100
150
–15
–10
–20
–30
3.0
2.5
2.0
1.5
1.0
0.5
75
60
45
30
15
40
30
20
10
0
0
0
–50
0
0
Peak Current Threshold vs V
I
RUN/SS Pull-Up Current
vs Temperature
SENSE
V
RUN/SS
–25
Pin Current vs V
1
0.6
= 1.9V
0
TEMPERATURE (°C)
25
2
V
V
OUT
ITH
1.2
50
(V)
(V)
3
75
OUT
100
1.8
4
ITH
125
3731H G12
3731H G15
3731H G18
3731Hfb
2.4
150
5