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ADP1148-3.3 Datasheet Step-down Switching Regulators

Manufacturer: Analog Devices

Overview: a High Efficiency Synchronous Step-Down Switching Regulators ADP1148, ADP1148-3.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

L The ADP1148 is part of a family of synchronous step-down switching regulator controllers featuring automatic sleep mode to maintain high efficiencies at low output currents.

These devices drive external complementary power MOSFETs at O switching frequencies up to 250 kHz using a constant off-time current-mode architecture.

SLEEP S VTH2 4 CT DRIVE 1 QR S VTH1 T OFF-TIME CONTROL 2 R QS C 10mV to 150mV VIN SENSE(–) VFB 6 ITH V B 13k⍀ G 1.25V 100k⍀ REFERENCE 10 SHUTDOWN 5 INT VCC The constant off-time architecture maintains constant ripple current in the inductor, easing the design of wide input range converters.

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