LTC3731CUH#TR Linear Technology, LTC3731CUH#TR Datasheet - Page 23

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LTC3731CUH#TR

Manufacturer Part Number
LTC3731CUH#TR
Description
IC CTRLR SW REG 3PH BUCK 32-QFN
Manufacturer
Linear Technology
Series
PolyPhase®r
Type
Step-Down (Buck)r
Datasheet

Specifications of LTC3731CUH#TR

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
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
32-QFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Output
-
Power - Output
-

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APPLICATIO S I FOR ATIO
which is less than one third of the normal, full load
conditions. Incidentally, since the load no longer dissi-
pates any power, total system power is decreased by over
90%. Therefore, the system actually cools significantly
during a shorted condition!
V
IN
R
BOLD LINES INDICATE HIGH,
SWITCHING CURRENTS.
KEEP LINES TO A MINIMUM
LENGTH.
IN
+
C
IN
U
U
W
Figure 11. Branch Current Waveforms
SW1
SW2
SW3
D2
D1
U
D3
L1
L2
L3
PC Board Layout Checklist
When laying out the printed circuit board, the following
checklist should be used to ensure proper operation of
the IC. These items are also illustrated graphically in the
layout diagram of Figure 11. Check the following in the
PC layout:
R
R
R
SENSE2
SENSE3
SENSE1
C
OUT
3731 F11
+
V
OUT
LTC3731
23
3731fb
R
L

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