LTC3828EG#PBF

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Analog Devices

DUAL, 2-PHASE STEP-DOWN CONTROLLER WITH TRACKING

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LTC3828EG#PBF

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Analog Devices

DUAL, 2-PHASE STEP-DOWN CONTROLLER WITH TRACKING

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DocumentsDatasheet R384 Reliability Data

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3828EG#PBF

Clock Sync	False
Control Features	Power Good, Enable, Tracking, Phase Control
Duty Cycle (Max) [Max]	99.4 %
Frequency - Switching [Max]	550 kHz
Frequency - Switching [Min]	260 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	28-SSOP
Package / Case [custom]	0.209 in
Package / Case [custom]	5.3 mm
Supplier Device Package	28-SSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	28 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

LTC3828 Series

Dual, 2-Phase Step-Down Controller with Tracking

Part	Control Features	Output Configuration	Topology	Supplier Device Package	Output Phases	Output Type	Number of Outputs	Package / Case [custom]	Package / Case	Package / Case [custom]	Frequency - Switching [Max]	Frequency - Switching [Min]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Synchronous Rectifier	Clock Sync	Function	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Duty Cycle (Max) [Max]
Analog Devices LTC3828EG#PBF	Enable Phase Control Power Good Tracking	Positive	Buck	28-SSOP	2	Transistor Driver	2	0.209 in	28-SSOP	5.3 mm	550 kHz	260 kHz	Surface Mount	85 °C	-40 °C			Step-Down	4.5 V	28 V	99.4 %

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 14.58
		10	$ 10.38
		25	$ 9.30
		100	$ 8.09
		250	$ 7.51
		500	$ 7.15
		1000	$ 7.00

Description

General part information

LTC3828 Series

The LTC3828 is a dual high performance step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows for a phase-lockable frequency of up to 550kHz. The TRCKSS pin provides both soft-start and tracking functions. Multiple LTC3828s can be daisy-chained in applications requiring more than two voltages to be tracked.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 a wide 4.5V to 28V (30V maximum) input supply range, encompassing all battery chemistries.The RUN pins control their respective channels independently. The FCB/PLLIN pin selects among Burst Mode®operation, skip-cycle mode and continuous current mode. Current foldback limits MOSFET dissipation during short-circuit conditions. Reverse current and current foldback functions are disabled during soft-start.ApplicationsTelecom InfrastructureASIC Power SupplyIndustry Equipment