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LTC3542IS6 数据表(PDF) 6 Page - Linear Integrated Systems

部件名 LTC3542IS6
功能描述  500mA, 2.25MHz Synchronous Step-Down
Download  16 Pages
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制造商  LINEAR [Linear Integrated Systems]
网页  http://www.linearsystems.com
标志 LINEAR - Linear Integrated Systems

LTC3542IS6 数据表(HTML) 6 Page - Linear Integrated Systems

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LTC3542
6
3542fa
+
+
+
0.6V
EA
VB
VFB
VIN
SW
MODE/SYNC
RUN
VIN
SHUTDOWN
BURST
MODE
CLKIN
ICOMP
SLOPE COMPENSATION
ANTI-
SHOOT
THROUGH
MODE
DETECT
0.6V REF
OSC
GND
3542 BD
IRCMP
LOGIC
VFB (Pin 1/Pin 3): Output Feedback Pin. Receives the
feedback voltage from an external resistive divider across
the output. Nominal voltage for this pin is 0.6V.
VIN (Pin 2/Pin 1): Power Supply Pin. Must be closely
decoupled to GND.
GND (Pin 3/Pin 2): Ground Pin.
SW (Pin 4/Pin 6): Switch Node Connection to Inductor.
This pin connects to the drains of the internal main and
synchronous power MOSFET switches.
MODE/SYNC (Pin 5/Pin 5): Mode Selection and Oscillator
Synchronization Pin. This pin controls the operation of the
device. When tied to GND or VIN, Burst Mode operation or
pulse skipping mode is selected, respectively. Do not float
this pin. The oscillation frequency can be synchronized to
an external oscillator applied to this pin and pulse skipping
mode is automatically selected.
RUN (Pin 6/Pin 4): Converter Enable Pin. Forcing this pin
above 1.5V enables this part, while forcing it below 0.3V
causes the device to shut down. In shutdown, all functions
are disabled drawing <1μA supply current. This pin must
be driven; do not float.
GND (Pin 7, DFN Package Only): Exposed Pad. The Ex-
posed Pad is ground. It must be soldered to PCB ground
to provide both electrical contact and optimum thermal
performance.
PIN FUNCTIONS (DFN/TSOT-23)
BLOCK DIAGRAM


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