LTC3731CUH Linear Technology, LTC3731CUH Datasheet - Page 8

• Manufacturer Part Number: LTC3731CUH
• Description: IC SW REG CTRLR SYNC BUCK 32QFN
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3731CUH

• 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: -

LTC3731
TYPICAL PERFOR A CE CHARACTERISTICS
8
AC, 20mV/DIV
AC, 20mV/DIV
10V/DIV
10V/DIV
10V/DIV
10V/DIV
10V/DIV
10V/DIV
V
V
V
V
V
V
V
V
SW1
SW2
SW3
OUT
SW1
SW2
SW3
OUT
Continuous Mode at 1 Amp, Light
Load Current (Circuit of Figure 14)
Shed Mode at 1 Amp, Light Load
Current (Circuit of Figure 14)
V
V
V
FREQUENCY = 250kHz
V
V
V
FREQUENCY = 250kHz
IN
OUT
FCB
IN
OUT
FCB
= 12V
= 12V
= 0V
= V
= 1.5V
= 1.5V
CC
4µs/DIV
4µs/DIV
W
U
3731 G20
3731 G22
–12
–15
–3
–6
–9
0
0001
Differential Amplifier Gain-Phase
0.01
FREQUENCY (MHz)
0.1
AC, 20mV/DIV
AC, 20mV/DIV
1
10V/DIV
10V/DIV
10V/DIV
20A/DIV
3731 G19
V
V
V
I
V
V
LOAD
SW1
SW2
SW3
OUT
OUT
10
Burst Mode at 1 Amp, Light Load
Current (Circuit of Figure 14)
Transient Load Current Response: 0 Amp
to 50 Amp (Circuit of Figure 14)
V
V
V
FREQUENCY = 250kHz
0
–45
–90
–135
–180
–225
V
V
V
FREQUENCY = 250kHz
IN
OUT
FCB
IN
OUT
FCB
= 12V
= 12V
= V
= 1.5V
= OPEN
= 1.5V
CC
20µs/DIV
4µs/DIV
3731 G23
3731 G21
3731fb