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See Technical Specifications

LTC3868EUH#PBF

Low I_Q, Dual 2-Phase Synchronous Step-Down Controller

Manufacturer:

Analog Devices, Inc
Mfr.Part #:

LTC3868EUH#PBF
Datasheet:

LTC3868EUH#PBF Datasheet (PDF)
packingQty:

Tube,73
packingOption:

Tube
tempRange:

-40 to 125C
Output Voltage:

800 mV to 14 V
EDA/CAD Models:

Request Free CAD Models for LTC3868EUH#PBF

Email: [email protected]

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Tel: +852 95804164

LTC3868EUH#PBF General Description

The LTC3868 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. Power loss and noise due to the input capacitor ESR are minimized by operating the two controller outputs out of phase.

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Key Features

Low Operating I_Q: 170μA (One Channel On)
Wide Output Voltage Range: 0.8V ≤ V_OUT ≤ 14V
Wide V_IN Range: 4V to 24V
R_SENSE or DCR Current Sensing
Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise
OPTI-LOOP^® Compensation Minimizes C_OUT
Phase-Lockable Frequency (75kHz to 850kHz)
Programmable Fixed Frequency (50kHz to 900kHz)
Selectable Continuous, Pulse-Skipping or Burst Mode^® Operation at Light Loads
Very Low Dropout Operation: 99% Duty Cycle
Adjustable Output Voltage Soft-Start
Power Good Output Voltage Monitor
Output Overvoltage Protection
Output Latchoff Protection During Short Circuit
Low Shutdown I_Q: 8μA
Internal LDO Powers Gate Drive from V_IN or EXTV_CC
No Current Foldback During Start-Up
Small 5mm × 5mm QFN Package

Application

Notebook and Palmtop Computers
Portable Instruments
Battery Operated Digital Devices
Distributed DC Power Systems

Specifications

model	LTC3868EUH#PBF	packingQty	Tube,73
packingOption	Tube	lifeCycle	production
tempRange	-40 to 125C	Product Category	Switching Voltage Regulators
Output Voltage	800 mV to 14 V	Output Current	25 A
Input Voltage, Max	24 V	Number of Outputs	2 Output
Topology	Buck	Mounting Style	SMD/SMT
Switching Frequency	850 kHz	Quiescent Current	170 uA
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature	+ 85 C
Series	LTC3868	Input Voltage, Min	4 V
Input Voltage	4 V to 24 V	Load Regulation	0.01 %
Operating Supply Current	170 uA	Product Type	Switching Voltage Regulators
Shutdown	Shutdown	Factory Pack Quantity	73
Subcategory	PMIC - Power Management ICs	Type	Dual 2-Phase Synchronous
Unit Weight	0.002241 oz