LTC3855IFE#PBF Linear Technology, LTC3855IFE#PBF Datasheet - Page 6

• Manufacturer Part Number: LTC3855IFE#PBF
• Description: IC CTLR DC/DC MULTIPHASE 38SSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3855IFE#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 ~ 3.3 V, 0.6 ~ 12.5 V
• Current - Output: 25A
• Frequency - Switching: 250kHz ~ 770kHz
• Voltage - Input: 4.5 ~ 38 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 38-TSSOP Exposed Pad, 38-eTSSOP, 38-HTSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC3855
Typical perForMance characTerisTics

300mA TO 5A
300mA TO 5A
AC-COUPLED
AC-COUPLED
100mV/DIV
100mV/DIV
500mV/DIV
500mV/DIV
5A/DIV
5A/DIV
5A/DIV
5A/DIV
2V/DIV
TK/SS
I
I
V
V
V
LOAD
LOAD
OUT
OUT
OUT
V
FB
I
I
L
L
Load Step
(Pulse-Skipping Mode)
Prebiased Output at 2V
Load Step
(Burst Mode Operation)
V
V
V
V
V
V
IN
OUT
IN
OUT
IN
OUT
= 12V
= 12V
= 12V
= 1.8V
= 1.8V
= 3.3V
50µs/DIV
50µs/DIV
2ms/DIV
3855
3855
3855
G01
G03
G05
CONTINUOUS MODE
PULSE-SKIPPING
300mA TO 5A
AC-COUPLED
OPERATION
Burst Mode
100mV/DIV
FORCED
5A/DIV
5A/DIV
5A/DIV
5A/DIV
5A/DIV
2V/DIV
1V/DIV
MODE
V
V
I
LOAD
V
OUT1
OUT2
RUN
OUT
I
L
Inductor Current at Light Load
Coincident Tracking
Load Step
(Forced Continuous Mode)
V
V
V
V
I
V
V
LOAD
IN
OUT
IN
OUT
OUT1
OUT2
= 12V
= 12V
= 1.8V
= 1.8V
= 400mA
= 1.8V, 1.5 LOAD
= 1.2V, 1 LOAD
50µs/DIV
5ms/DIV
1µs/DIV
V
V
OUT1
OUT2
3855
3855
3855
G02
G04
G06
3855f