Description
LT1945EMS#PBF LTC Linear Technology IC Converter Volt DC-DC Dual Output Non-In Volt In Volt Step Up/Step Down 10-Pin MSOP
Specifications
Family LT1945
Type Non-Inverting|Inverting|Step Up|Step Down
Output Type Adjustable
Number of Outputs 2
Line Regulation 0.1%/V
Minimum Input Voltage 1.2V
Maximum Input Voltage 15V
Output Voltage 1.23V to 36V|-34V(Max)
Maximum Output Current 0.4A
Switching Regulator Yes
Minimum Operating Temperature -40°C
Maximum Operating Temperature 85°C
Screening Level Extended
Mounting Surface Mount
Pin_Count 10
Supplier_Package MSOP
Product Width 3mm
Product Height 0.86mm
Product Length 3mm
Product Type DC to DC Converter and Switching Regulator Chip
The LT1945EMS#PBF is a Dual Micropower DC/DC Converter with positive and negative outputs. Each converter is designed with a 350mA current limit and an input voltage range of 1.2 to 15V, making it ideal for a wide variety of applications. Both converters feature a quiescent current of only 20µA at no load, which further reduces to 0.5µA in shutdown. A current limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad range of load current. The 36V switch allows high voltage outputs up to ±34V to be easily generated without the use of costly transformers. The LT1945’s low off-time of 400ns permits the use of tiny, low profile inductors and capacitors to minimize footprint in space-conscious portable applications. The LT1945 contains additional circuitry to provide protection during start-up and under short-circuit conditions.
- Generates well-regulated positive and negative outputs
- Low quiescent current (20µA in active mode per converter, <1µA in shutdown mode)
- Operates with VIN as low as 1.2V
- Low VCESAT switch (250mV at 300mA)
- Uses small surface mount components
- High output voltage (up to ±34V)
Applications
Computers & Computer Peripherals; Portable Devices; Power Management; Imaging, Video & Vision; Multimedia; Consumer Electronics
Manufacturer:Linear Technology
Datasheet:Linear/LT1945EMS.pdf
