LTC1148HVCN-3.3

Series: -
Buck: Yes
Inverting: No
Doubler: No
Divider: No
Cuk: No
Isolated: No
Operating Temperature: 0°C ~ 70°C
PWM Type: Current Mode
Number of Outputs: 1
Duty Cycle: 100%
Packaging: Tube
Boost: No
Flyback: No
Package / Case: 14-DIP (0.300", 7.62mm)
Manufacturer: Linear Technology
Frequency - Max: 250kHz
Voltage - Supply: 3.5 V ~ 18 V


Pinout




Description

The LTC1148 series is a family of synchronous stepdown switching regulator controllers featuring automatic Burst Mode operation to maintain high efficiencies at low output currents.The LTC1148HVCN-3.3 belongs to LTC1148 series.

Features of the LTC1148HVCN-3.3 are:(1)ultrahigh efficiency: over 95% possible;(2)current-mode operation for excellent Line and load transient response;(3)high efficiency maintained over three decades of output current;(4)low 160mA standby current at light loads;(5)logic controlled micropower shutdown: IQ < 20A;(6)wide VIN range: 3.5V to 20V;(7)short-circuit protection;(8)very low dropout operation: 100% duty cycle;(9)synchronous FET switching for high efficiency;(10)adaptive nonoverlap gate drives;(11)output can be externally held high in shutdown;(12)available in 14-pin narrow SO package.Applications of the LTC1174HVCN8 are:(1)notebook and palmtop computers;(2)portable instruments;(3)battery-operated digital devices;(4)cellular telephones;(5)DC power distribution systems;(6)GPS systems.

The absolute maximum ratings of the LTC1148HVCN-3.3 can be summarized as:(1):the parameter is input supply voltage,the rating is -0.3 to 20,the unit is V;(2):the parameter is continuous output current,the rating is 50,the unit is mA;(3):the parameter is sense voltages VIN 12.7V,the rating is 13 to -0.3,the unit is V;(4):the parameter is sense voltages VIN < 12.7V,the rating is VIN+0.3 o -0.3,the unit is V;(5):the parameter is operating ambient temperature range,the rating is 0 to 70,the unit is ;(6):the parameter is extended commercial temperature range,the rating is -40 to 85,the unit is ;(7):the parameter is junction temperature range,the rating is 125,the unit is ;(8):the parameter is storage temperature range,the rating is -65 to 150,the unit is ;(9):the parameter is lead temperature (soldering,10 sec),the rating is 300,the unit is .

Parameters:

Technical/Catalog Information	LTC1148HVCN-3.3
Vendor	Linear Technology
Category	Integrated Circuits (ICs)
Type	Step-Down (Buck)
Number of Outputs	1
Voltage - Input	3.5 ~ 20 V
Voltage - Output	3.3V
Current - Output	50mA
Power - Output	-
Package / Case	14-DIP (300 mil)
Packaging	Tube
Internal Switch(s)	No
Synchronous	Yes
Rds (On)	-
Operating Temperature	0°C ~ 70°C
Frequency - Switching	250kHz
Drawing Number	161; 05-08-1510; N; 8
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	LTC1148HVCN 3 3 LTC1148HVCN33