LTC3738 Linear Technology, LTC3738 Datasheet - Page 7

• Manufacturer Part Number: LTC3738
• Description: 3-Phase Buck Controller
• Manufacturer: Linear Technology

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TYPICAL PERFOR A CE CHARACTERISTICS
10mV/DIV
10mV/DIV
5V/DIV
5V/DIV
5V/DIV
5V/DIV
5V/DIV
5V/DIV
V
V
V
V
V
V
V
V
SW1
SW2
SW3
SW1
SW2
SW3
OUT
OUT
1.0
0.5
3.0
2.5
2.0
1.5
0
–45
Shed Mode at 1A,
Light Load Current
V
V
V
FREQUENCY = 210kHz
Continuous Mode at 1A,
Light Load Current
V
V
V
FREQUENCY = 210kHz
Maximum Current Threshold
Mismatch vs Temperature
IN
OUT
FCB
IN
OUT
FCB
–30
= 12V
= 12V
= V
= GND
= 1.5V
= 1.5V
CC
–15
TEMPERATURE (°C)
W
0
2µs/DIV
2µs/DIV
15
U
30
45
60
75
3738 G19
3738 G21
3738 G23
90
dI/dt > 200A/µs
100A STEP
50mV/DIV
10mV/DIV
∆I
5V/DIV
5V/DIV
5V/DIV
V
V
V
V
V
OUT
OUT
180
135
–45
SW1
SW2
SW3
OUT
45
90
0
–15
Load Transient with AVP
V
V
C
SANYO TPE POSCAP
+ 18 × 22µF/X5R CERAMIC
Pulse Skip Mode at 1A,
Light Load Current
(V
(V
V
V
V
FREQUENCY = 210kHz
T
IN
OUT
OUT
IN
OUT
FCB
A
80mV
AVP
SENSE
= 12V
= 12V
= 25°C unless otherwise noted.
= 1.35V
= 10 × 330µF/2.5V
= OPEN
= 1.5V
– V
0
+
V
– V
SENSE
IN
+
) vs
SENSE
15
+
2µs/DIV
– V
SENSE
–
)
30
–
(mV)
INTEL
SPEC
45
3738 G24
3738 G20
3738 G22
60
LTC3738
7
3738f