Datasheet LTC3406A (Analog Devices) - 6
| Fabricante | Analog Devices |
| Descripción | 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT |
| Páginas / Página | 16 / 6 — PIN FUNCTIONS. RUN (Pin 1):. VIN (Pin 4):. FB (Pin 5):. GND (Pin 2):. SW … |
| Formato / tamaño de archivo | PDF / 305 Kb |
| Idioma del documento | Inglés |
PIN FUNCTIONS. RUN (Pin 1):. VIN (Pin 4):. FB (Pin 5):. GND (Pin 2):. SW (Pin 3):. FUNCTIONAL DIAGRAM
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LTC3406A
PIN FUNCTIONS RUN (Pin 1):
Run Control Input. Forcing this pin above 1.5V
VIN (Pin 4):
Main Supply Pin. Must be closely decoupled to enables the part. Forcing this pin below 0.3V shuts down GND, Pin 2, with a 2.2μF or greater ceramic capacitor. the device. In shutdown, all functions are disabled drawing
V
<1μA supply current. Do not leave RUN fl oating.
FB (Pin 5):
Feedback Pin. Receives the feedback voltage from an external resistive divider across the output.
GND (Pin 2):
Ground Pin.
SW (Pin 3):
Switch Node Connection to Inductor. This pin connects to the drains of the internal main and synchronous power MOSFET switches.
FUNCTIONAL DIAGRAM
SLOPE COMP 0.65V OSC OSC FREQ 4 VIN SHIFT – VFB + – 5 SLEEP + 0.6V 5Ω 0.4V + – + I – EA COMP BURST S Q R Q SWITCHING RS LATCH LOGIC VIN AND ANTI- BLANKING SHOOT- CIRCUIT THRU 3 SW RUN 1 0.6V REF + SHUTDOWN IRCMP– 2 GND 3406A BD 3406afa 6
PIN FUNCTIONS RUN (Pin 1):
Run Control Input. Forcing this pin above 1.5V
VIN (Pin 4):
Main Supply Pin. Must be closely decoupled to enables the part. Forcing this pin below 0.3V shuts down GND, Pin 2, with a 2.2μF or greater ceramic capacitor. the device. In shutdown, all functions are disabled drawing
V
<1μA supply current. Do not leave RUN fl oating.
FB (Pin 5):
Feedback Pin. Receives the feedback voltage from an external resistive divider across the output.
GND (Pin 2):
Ground Pin.
SW (Pin 3):
Switch Node Connection to Inductor. This pin connects to the drains of the internal main and synchronous power MOSFET switches.
FUNCTIONAL DIAGRAM
SLOPE COMP 0.65V OSC OSC FREQ 4 VIN SHIFT – VFB + – 5 SLEEP + 0.6V 5Ω 0.4V + – + I – EA COMP BURST S Q R Q SWITCHING RS LATCH LOGIC VIN AND ANTI- BLANKING SHOOT- CIRCUIT THRU 3 SW RUN 1 0.6V REF + SHUTDOWN IRCMP– 2 GND 3406A BD 3406afa 6