LTC3728LCGN#TR Linear Technology, LTC3728LCGN#TR Datasheet - Page 8

• Manufacturer Part Number: LTC3728LCGN#TR
• Description: IC REG SW DUAL 2PH STPDWN 28SSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3728LCGN#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: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

200mV/DIV
LTC3728L/LTC3728LX
TYPICAL PERFORMANCE CHARACTERISTICS
8
V
10V/DIV
10V/DIV
5V/DIV
RUN/SS
5V/DIV
2A/DIV
2A/DIV
V
V
V
SW1
SW2
OUT
V
I
I
IN
IN
L
Soft-Start Up (Figure 13)
V
V
Input Source/Capacitor
Instantaneous Current (Figure 13)
V
V
V
I
OUT5
IN
OUT
IN
OUT1
PLLFLTR
= 15V
= 15V
= 5V
= I
= 5V, V
OUT3.3
= 0V
OUT2
= 2A
= 3.3V
5ms/DIV
1μs/DIV
3728L G19
3728L G22
200mV/DIV
20mV/DIV
0.5A/DIV
2A/DIV
V
V
OUT
OUT
I
I
L
L
Load Step (Figure 13)
Burst Mode Operation (Figure 13)
V
V
V
LOAD STEP = 0A TO 3A
Burst Mode OPERATION
V
V
V
V
I
OUT
IN
OUT
PLLFLTR
IN
OUT
PLLFLTR
FCB
= 15V
= 15V
= 20mA
= 5V
= OPEN
= 5V
= 0V
= 0V
20μs/DIV
10μs/DIV
3728L G20
3728L G23
200mV/DIV
20mV/DIV
0.5A/DIV
2A/DIV
V
V
OUT
OUT
I
I
L
L
Load Step (Figure 13)
V
V
V
LOAD STEP = 0A TO 3A
CONTINUOUS MODE
Constant-Frequency (Burst Inhibit)
Operation (Figure 13)
V
V
V
V
I
OUT
IN
OUT
PLLFLTR
IN
OUT
PLLFLTR
FCB
= 15V
= 15V
= 20mA
= 5V
= 5V
= 5V
= 0V
= 0V
20μs/DIV
2μs/DIV
3728L G21
3728L G24
3728lxfe