LTC3850EUFD#PBF Linear Technology, LTC3850EUFD#PBF Datasheet - Page 26

• Manufacturer Part Number: LTC3850EUFD#PBF
• Description: IC CNTRLR STP DWN SYNC 28-QFN
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3850EUFD#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 23.3 V
• Current - Output: 100mA
• Frequency - Switching: 250kHz ~ 780kHz
• Voltage - Input: 4 ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC3850/LTC3850-1
APPLICATIONS INFORMATION
26
R
IN
V
IN
C
IN
BOLD LINES INDICATE
HIGH SWITCHING
CURRENT. KEEP LINES
TO A MINIMUM LENGTH.
f
IN
Figure 12. Recommended Printed Circuit Layout Diagram
I
V
SENSE1
SENSE1
PLLLPF
I
MODE/PLLIN
RUN1
RUN2
SGND
SENSE2
SENSE2
V
I
TK/SS2
TH1
LIM
TH2
FB1
FB2
+
–
–
+
Figure 13. Branch Current Waveforms
BOOST1
BOOST2
PGOOD
EXTV
TK/SS1
INTV
PGND
SW1
SW2
BG1
BG2
TG1
TG2
V
CC
CC
IN
SW1
SW2
D1
D2
R
PGOOD
PU2
L1
L2
C
C
V
B1
C
B2
PULL-UP
INTVCC
C
VIN
R
R
SENSE1
SENSE2
C
C
CERAMIC
OUT1
OUT2
V
R
M1
M3
IN
IN
1µF
V
V
OUT1
OUT2
CERAMIC
M2
M4
1µF
L1
C
L2
IN
R
R
SENSE
SENSE
C
C
D1
OUT1
OUT2
D2
38501 F12
38501 F13
R
R
L1
L2
V
GND
V
OUT1
OUT2
38501fc