LTC3835EDHC-1#TRPBF Linear Technology, LTC3835EDHC-1#TRPBF Datasheet - Page 8

• Manufacturer Part Number: LTC3835EDHC-1#TRPBF
• Description: IC CTLR SYNC STEP-DOWN 16-DFN
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3835EDHC-1#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 10 V
• Current - Output: 3A
• Frequency - Switching: 250kHz ~ 530kHz
• Voltage - Input: 4 ~ 36 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC3835-1
PIN FUNCTIONS
RUN (Pin 13/Pin 13): Digital Run Control Input for
Controller. Forcing this pin below 0.7V shuts down all
controller functions, reducing the quiescent current that
the LTC3835-1 draws to approximately 10μA.
SENSE
Current Comparator.
SENSE
Current Comparator. The I
offsets between the SENSE
tion with R
PLLIN/MODE (Pin 16/Pin 16): External Synchronization
Input to Phase Detector and Forced Continuous Control
FUNCTIONAL DIAGRAM
8
–
+
(Pin 14/Pin 14): The (–) Input to the Differential
(Pin 15/Pin 15): The (+) Input to the Differential
SENSE
INTV
F
PLLIN/MODE
IN
V
IN
CC
R
+
LP
C
–0.5V
PLLIN/MODE
LP
set the current trip threshold.
PLLLPF
INTV
SGND
0.8V
V
IN
CC
–
+
–
+
OSCILLATOR
INTERNAL
PHASE DET
SUPPLY
5.25V
–
LDO
TH
(DHC Package/GN Package)
and SENSE
FC
BURSTEN
pin voltage and controlled
RUN
CLK
+
0.5μA
6V
pins in conjunc-
2(V
0.45V
FB
SLOPE
COMP
ICMP
)
S
R
+
–
Q
Q
0.4V
–
DROP
OUT
DET
+
–
+
+
B
6mV
BOT
TOP ON
BURSTEN
–
SLEEP
SHDN
Input. When an external clock is applied to this pin, the
phase-locked loop will force the rising TG signal to be
synchronized with the rising edge of the external clock. In
this case, an R-C fi lter must be connected to the PLLLPF
pin. When not synchronizing to an external clock, this input
determines how the LTC3835-1 operates at light loads.
Pulling this pin below 0.7V selects Burst Mode operation.
Tying this pin to INTV
operation. Tying this pin to a voltage greater than 0.9V and
less than INTV
Exposed Pad (Pin 17, DHC Package): SGND. Must be
soldered to PCB.
FC
–
+
OV
IR
EA
SHDN
SWITCH
–
+
+
–
LOGIC
V
FB
TRACK/SS
0.80V
0.88V
1μA
TOP
BOT
INTV
CC
CC
TRACK/SS
SENSE
SENSE
BOOST
PGND
SW
V
selects pulse-skipping operation.
BG
I
TG
TH
FB
+
–
CC
INTV
forces continuous inductor current
CC
R
D
C
C
A
C
B
SS
B
R
C2
L
B
C
C
V
IN
R
R
D
SENSE
C
C
IN
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