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LTC1628 Datasheet PDF

Part Series:
LTC1628 Series
Category:
DC-DC Converters
Description:
LINEAR TECHNOLOGY LTC1628IG#PBF DC-DC Controller, High Efficiency, 3.5V to 36V, 2Outputs, Synchronous Buck, 360kHz, SSOP-28
Updated Time: 2023/01/13 03:02:44 (UTC + 8)

LTC1628 DC-DC Converters Datasheet PDF

LTC1628 Datasheet PDF DC-DC Converters

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LTC1628IG#PBF - Linear Technology Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Frequency
220 kHz
Number of Pins
28 Pin
Supply Voltage (DC)
3.50V (min)
Case/Package
SSOP-28
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LTC1628IG#PBF - Linear Technology Function Overview

The LTC1628IG#PBF is a high-performance dual step-down Switching Regulator Controller drive all N-channel synchronous power MOSFET stages. The constant frequency current-mode architecture allows adjustment of the frequency up to 300kHz. Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out of phase. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The precision 0.8V reference and power good output indicator are compatible with future microprocessor generations and a wide 3.5 to 30V (36V maximum) input supply range encompasses all battery chemistries. A RUN/SS pin for each controller provides both soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when overcurrent latch-off is disabled.
Out-of-phase controllers reduce required input capacitance and power supply induced noise
OPTI-LOOP® Compensation minimizes COUT
±1% Output voltage accuracy
Dual N-channel MOSFET synchronous drive
Adjustable soft-start current ramping
Foldback output current limiting
Latched short-circuit shutdown with defeat option
Output overvoltage protection
Remote output voltage sense
20µA Low shutdown
Selectable constant frequency or burst mode operation
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