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LT8609AHMSE16 DataSheet

LT8609AHMSE16 DataSheet

Part No.
LT8609AHMSE16
Part Marking
8609A
Temperature
–40°C to 150°C
Package
16-Lead Plastic MSOP
File Size
1923 KB
Page
30 Pages
Manufacturer
Linear Technology
Views
1
Upload Time
2022-06-01 16:25:56
Update Time
2022-06-01
Description
IC REG BUCK ADJUSTABLE 2A 16MSOP
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LT8609AHMSE16 Features

■ Wide Input Voltage Range: 3.0V to 42V
■ Ultralow Quiescent Current Burst Mode® Operation:
 □ <2.5µA IQ Regulating 12VIN to 3.3VOUT
 □ Output Ripple <10mVP-P
■ High Efficiency 2MHz Synchronous Operation:
 □ >93% Efficiency at 1A, 5VOUT from 12VIN
■ 3A Maximum Continuous Output
■ Fast Minimum Switch-On Time: 45ns
■ LT8609A Available in Fixed 3.3V and 5V Output
■ Adjustable and Synchronizable: 200kHz to 2.2MHz
■ Spread Spectrum Frequency Modulation for Low EMI
■ Allows Use of Small Inductors
■ Low Dropout
■ Peak Current Mode Operation
■ Accurate 1V Enable Pin Threshold
■ Internal Compensation
■ Output Soft-Start and Tracking
■ Small 10-Lead MSOP Package, 16-Lead MSOP Package, or 10-Lead 3mm×3mm DFN Package with Side Wettable Flanks
■ AEC-Q100 Qualified for Automotive Applications

LT8609AHMSE16 Applications

■ GSM Transceivers
■ General Purpose Step-Down
■ Low EMI Step-Down

LT8609AHMSE16 Description

The LT8609AHMSE16 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 1.7µA of nonswitching quiescent current.

The LT8609AHMSE16 can deliver 3A of continuous current. Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. A SYNC pin allows synchronization to an external clock, or spread spectrum modulation for low EMI operation. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN UVLO or to shut down the part. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up while the PG flag signals when VOUT is within ±8.5% on the adjustable output parts or ±7.5% on the fixed output parts of the programmed output voltage as well as fault conditions.

The LT8609A has slower switch edges for lower EMI emissions. The LT8609B operates in pulse-skipping mode only.

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