LTC3103 - 1.8μA Quiescent Current, 15V, 300mA Synchronous Step-Down DC/DC Converter

The LTC®3103 is a high efficiency, monolithic synchronous step-down converter using a current mode architecture capable of supplying 300mA of output current.

The LTC3103 offers two operational modes: automatic Burst Mode operation and forced continuous mode allowing the user the ability to optimize output voltage ripple, noise and light load efficiency. With Burst Mode operation enabled, the typical DC input supply current at no load drops to 1.8μA maximizing the efficiency for light loads. Selection of forced continuous mode provides very low noise constant frequency, 1.2MHz operation.

Additionally, the LTC3103 includes an accurate RUN comparator, thermal overload protection, a power good output and an integrated soft-start feature to guarantee that the power system start-up is well controlled.

Features

Ultralow Quiescent Current: 1.8μA
Synchronous Rectification: Efficiency Up to 95%
Wide VIN Range: 2.5V to 15V
Wide VOUT Range: 0.6V to 13.8V
300mA Output Current
User-Selectable Automatic Burst Mode® or Forced Continuous Operation
Accurate and Programmable RUN Pin Threshold
1.2MHz Fixed Frequency PWM
Internal Compensation
Power Good Status Output for VOUT
Available in Thermally Enhanced 3mm × 3mm × 0.75mm, 10-Pin DFN and 10-Pin MSOP Packages

Typical Application

Packaging

Order Information

Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC3103EDD#PBF	3x3 DFN-10	E	$3.50	$2.45
LTC3103EDD#TRPBF	3x3 DFN-10	E		$2.51
LTC3103EMSE#PBF	MS-10E	E	$3.50	$2.45
LTC3103EMSE#TRPBF	MS-10E	E		$2.51
LTC3103IDD#PBF	3x3 DFN-10	I	$3.86	$2.70
LTC3103IDD#TRPBF	3x3 DFN-10	I		$2.76
LTC3103IMSE#PBF	MS-10E	I	$3.86	$2.70
LTC3103IMSE#TRPBF	MS-10E	I		$2.76

Demo Boards

Part Number	Description	Price
DC1883A	LTC3103EDD Demo Board I 2.5 ≤ VIN ≤ 15V, VOUT = 1.8V @ 300mA	$100.00