LTC3872ETS8#TRMPBF Linear Technology, LTC3872ETS8#TRMPBF Datasheet - Page 6

• Manufacturer Part Number: LTC3872ETS8#TRMPBF
• Description: IC DC/DC CNTRLR TSOT23-8
• Manufacturer: Linear Technology
• Type: Step-Up (Boost)r

Specifications of LTC3872ETS8#TRMPBF

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.2 ~ 60 V
• Current - Output: 10A
• Frequency - Switching: 550kHz
• Voltage - Input: 2.75 ~ 9.8 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-8, TSOT-8
• Primary Input Voltage: 9.8V
• No. Of Outputs: 1
• Output Voltage: 60V
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Supply Voltage Range: 2.75V To 9.8V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: LTC3872ETS8#TRMPBF; LTC3872ETS8#TRMPBFTR

LTC3872
pin FuncTions
FuncTional DiagraM
6
IPRG (Pin 1/Pin 4): Current Sense Limit Select Pin.
I
pensation point. Nominal voltage range for this pin is
0.7V to 1.9V.
V
external resistor divider across the output.
GND (Pin 4/Pin 1, Exposed Pad Pin 9): Ground. The ex-
posed pad must be soldered to PCB ground for electrical
contact and rated thermal performance.
NGATE (Pin 5/Pin 8): Gate Drive for the External N-Channel
MOSFET. This pin swings from 0V to V
TH
FB
(Pin 2/Pin 3): It serves as the error amplifier com-
(Pin 3/Pin 2): Receives the feedback voltage from an
RUN/SS
V
IN
0.7µA
UNDERVOLTAGE
COMPARATOR
SHUTDOWN
LOCKOUT
SHDN
SOFT-START
UV
INTERNAL
(TS8/DD8)
RAMP
REFERENCE
VOLTAGE
IN
.
I
TH
1.2V
AMPLIFIER
ERROR
+
–
CURRENT LIMIT
BUFFER
I
TH
CLAMP
V
decoupled to GND.
RUN/SS (Pin 7/Pin 6): Shutdown and external soft-start
pin. In shutdown, all functions are disabled and the NGATE
pin is held low.
SW (Pin 8/Pin 5): Switch node connection to inductor and
current sense input pin through external slope compensa-
tion resistor. Normally, the external N-channel MOSFET’s
drain is connected to this pin.
IN
–
+
(Pin 6/Pin 7): Supply Pin. This pin must be closely
1.2V
GND
LATCH
RS
–
LOGIC CIRCUIT
SWITCHING
R
I
LIM
Q
+
S
SW
COMPARATOR
CURRENT
V
COMPENSATION
IN
OSCILLATOR
550kHz
SLOPE
NGATE
IPRG
V
3872 FD
FB
3872fb