Datasheet LTC3410-1.875 (Analog Devices) - 6
| Hersteller | Analog Devices |
| Beschreibung | 2.25MHz, 300mA Synchronous Step-Down Regulator in SC70 |
| Seiten / Seite | 16 / 6 — PI FU CTIO S. RUN (Pin 1):. VIN (Pin 4):. OUT (Pin 6):. GND (Pins 2, 5):. … |
| Dateiformat / Größe | PDF / 238 Kb |
| Dokumentensprache | Englisch |
PI FU CTIO S. RUN (Pin 1):. VIN (Pin 4):. OUT (Pin 6):. GND (Pins 2, 5):. SW (Pin 3):. FU CTIO AL DIAGRA
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Textversion des Dokuments
LTC3410-1.875
U U U PI FU CTIO S RUN (Pin 1):
Run Control Input. Forcing this pin above
VIN (Pin 4):
Main Supply Pin. Must be closely decoupled 1.5V enables the part. Forcing this pin below 0.3V shuts to GND, Pin 2, with a 2.2µF or greater ceramic capacitor. down the device. In shutdown, all functions are disabled
V
drawing <1µA supply current. Do not leave RUN floating.
OUT (Pin 6):
Output Voltage Feedback. An internal resis- tive divider divides the output voltage down for compari-
GND (Pins 2, 5):
Ground Pin. son to the internal 0.8V reference voltage.
SW (Pin 3):
Switch Node Connection to Inductor. This pin connects to the drains of the internal main and synchro- nous power MOSFET switches.
U U W FU CTIO AL DIAGRA
SLOPE COMP 0.65V OSC OSC FREQ 4 VIN SHIFT – VOUT 6 + – EN SLEEP R1 + 5Ω 322.5k 0.8V 0.4V + – + ICOMP VFB – EA BURST R2 240k S Q R Q SWITCHING V RS LATCH IN LOGIC AND ANTI- SHOOT- RUN BLANKING CIRCUIT THRU 3 SW 1 0.8V REF + SHUTDOWN I 5 RCMP – 2 GND 34101875 BD 34101875f 6
U U U PI FU CTIO S RUN (Pin 1):
Run Control Input. Forcing this pin above
VIN (Pin 4):
Main Supply Pin. Must be closely decoupled 1.5V enables the part. Forcing this pin below 0.3V shuts to GND, Pin 2, with a 2.2µF or greater ceramic capacitor. down the device. In shutdown, all functions are disabled
V
drawing <1µA supply current. Do not leave RUN floating.
OUT (Pin 6):
Output Voltage Feedback. An internal resis- tive divider divides the output voltage down for compari-
GND (Pins 2, 5):
Ground Pin. son to the internal 0.8V reference voltage.
SW (Pin 3):
Switch Node Connection to Inductor. This pin connects to the drains of the internal main and synchro- nous power MOSFET switches.
U U W FU CTIO AL DIAGRA
SLOPE COMP 0.65V OSC OSC FREQ 4 VIN SHIFT – VOUT 6 + – EN SLEEP R1 + 5Ω 322.5k 0.8V 0.4V + – + ICOMP VFB – EA BURST R2 240k S Q R Q SWITCHING V RS LATCH IN LOGIC AND ANTI- SHOOT- RUN BLANKING CIRCUIT THRU 3 SW 1 0.8V REF + SHUTDOWN I 5 RCMP – 2 GND 34101875 BD 34101875f 6