LTC1433CGN

Series: -
Number of Outputs: 1
Synchronous Rectifier: No
Operating Temperature: 0°C ~ 70°C
Mounting Type: Surface Mount
Packaging: Tube
Type: Step-Down (Buck)
PWM Type: Current Mode
Output Type: Both
Current - Output: 450mA
Manufacturer: Linear Technology
Package / Case: 16-SSOP (0.154", 3.90mm Width)
Supplier Device Package: 16-SSOP
Voltage - Output: 3.3V, 5V, Adj
Frequency - Switching: Up to 700kHz
Voltage - Input: 3 V ~ 13.5 V


Pinout




Description

The LTC1433CGN is monolithic pulse width modulated step-down DC/DC converters. By utilizing current mode switching techniques, they provide excellent AC and DC load and line regulation. Both devices operate at a fixed frequency with the LTC1434 phase-lockable to an external clock signal.

Features of the LTC1433CGN are:(1)high efficiency:up to 93%;(2)constant frequency adaptive power operation;(3)input voltage range:3V to 13.5V;(4)internal 0.6W power switch (VIN = 10V);(5)low dropout operation: 100% duty cycle;(6)low-battery detector;(7)internal power-on reset timer;(8)current mode operation for excellent line and load transient response;(9)low quiescent current:470mA;(10)shutdown mode draws only 15mA supply current;(11)±1% reference accuracy;(12)available in 16- and 20-lead narrow SSOP.Applications of the LTC1433CGN are:(1)cellular telephones;(2)portable instruments;(3)wireless modems;(4)RF communications;(5)distributed power systems;(6)scanners;(7)battery-powered equipment.

The absolute maximum ratings of the LTC1433CGN can be summarized as:(1):the parameter is input supply voltage (PWRVIN, SVIN),the rating is 13.5 to -0.3,the unit is V;(2):the parameter is DC small switch current (SSW),the rating is 100,the unit is mA;(3):the parameter is peak small switch current (SSW),the rating is 300,the unit is mA;(4):the parameter is small switch voltage (SSW),the rating is (VIN + 0.3) to (VIN 13.5),the unit is V;(5):the parameter is DC large switch current (BSW),the rating is 600,the unit is mA;(6):the parameter is peak large switch current (BSW),the rating is 1.2,the unit is A;(7):the parameter is large switch voltage (BSW),the rating is (VIN + 0.3) to (VIN 13.5),the unit is V;(8):the parameter is PLLIN, PLL LPF, ITH, COSC,the rating is 2.7 to -0.3,the unit is V;(9):the parameter is POR, LBO,the rating is 12 to -0.3,the unit is V;(10):the parameter is LBI, VOSENSE,the rating is 10 to -0.3,the unit is V;(11):the parameter is RUN/SS,VPROG voltage VIN 11.7V,the rating is 12 to -0.3,the unit is V;(12):the parameter is RUN/SS,VPROG voltage VIN <11.7V,the rating is VIN+0.3 to -0.3,the unit is V;(13):the parameter is extended commercial operating temperature range,the rating is -40 to +85,the unit is ;(14):the parameter is commercial temperature range,the rating is 0 to 70,the unit is ;(15):the parameter is junction temperature,the rating is 125,the unit is ;(16):the parameter is storage temperature range,the rating is -65 to +150,the unit is ;(17):the parameter is lead temperature (soldering, 10 sec),the rating is 300,the unit is .

The electrical characteristics of the LTC1433CGN can be summarized as:(1):the parameter is feedback current,the Typ is 10,the Max is 50,the unit is nA;(2):the parameter is output overvoltage lockout,the Min is 1.24,the Typ is 1.28,the Max is 1.32,the unit is V;(3):the parameter is reference voltage line regulation,the Typ is 0.002,the Max is 0.01,the unit is %/V;(4):the parameter is input offset voltage drift,the Typ is ±5,the Max is ±100,the unit is nV/;(5):the parameter is VPROG input current,the Typ is -4,4,the Max is -10,10,the unit is A;(6):the parameter is soft start current source,the Min is 1.2,the Typ is 3,the Max is 4.5,the unit is A.

 

Parameters:

Technical/Catalog Information	LTC1433CGN
Vendor	Linear Technology
Category	Integrated Circuits (ICs)
Type	Step-Down (Buck)
Number of Outputs	1
Voltage - Input	3 ~ 13.5 V
Voltage - Output	3.3V, 5V, Adj
Current - Output	450mA
Power - Output	-
Package / Case	16-SSOP
Packaging	Bulk
Internal Switch(s)	Yes
Synchronous	No
Rds (On)	3.3 Ohm (Small), 800 mOhm (Big)
Operating Temperature	0°C ~ 70°C
Frequency - Switching	125kHz ~ 240kHz
Drawing Number	161; 05-08-1641; GN; 16
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	LTC1433CGN LTC1433CGN