MFG:LT Package Cooled:2009+ROHS D/C:320
LTC3240EDC-3.3TRPBF, LTC3250-1.5, LTC3250CS6-1.5 Datasheet download
MFG: LT
Package Cooled: 2009+ROHS
D/C: 320
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PDF/DataSheet Download
Datasheet: LTC0157
File Size: 163926 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
PDF/DataSheet Download
Datasheet: LTC3250-1.5
File Size: 212079 KB
Manufacturer: Linear
Download : Click here to Download
PDF/DataSheet Download
Datasheet: LTC0157
File Size: 163926 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
The LTC®3250-1.5 is a charge pump step-down DC/DC converter that produces a 1.5V regulated output from a 3.1V to 5.5V input. The part uses switched capacitor fractional conversion to achieve a typical efficiency increase of 50% over that of a linear regulator. No inductors are required.
A unique constant frequency architecture provides a low noise regulated output as well as lower input noise than conventional charge pump regulators.* High frequency operation (fOSC = 1.5MHz) simplifies filtering to further reduce conducted noise. The part also uses Burst Mode® operation to improve efficiency at light loads.
Low operating current (35mA with no load, <1A inshutdown) and low external parts count (three smallceramic capacitors) make the LTC3250-1.5 ideally suited for space constrained battery powered applications. The part is short-circuit and overtemperature protected, and is available in a low profile (1mm) 6-pin ThinSOT package.
VIN to GND ...................................................... 0.3V to 6V
SHDN to GND .................................... 0.3V to (VIN + 0.3V)
IOUT (Note 2)........................................................... 350mA
Operating Temperature Range (Note 3) .. 40°C to 85°C
Storage Temperature Range ................ 65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................... 300°C
` 3.1V to 5.5V Input Voltage Range
` No Inductors
` Li-Ion (3.6V) to 1.5V with 81% Efficiency
` Low Noise Constant Frequency Operation
` Output Voltage: 1.5V ±4%
` Output Current: 250A
` Shutdown Disconnects Load from VIN
` Low Operating Current: IQ = 35A
` Low Shutdown Current: ISD < 1A
` Oscillator Frequency = 1.5MHz
` Soft-Start Limits Inrush Current at Turn-On
` Short-Circuit and Overtemperature Protected
` Low Profile (1mm) ThinSOTTM Package
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