Maker : National Semiconductor
Part No. : LM3352

  Datasheet PDF : LM3352.pdf
  Cross Reference : LM3352 Cross Reference
  Buy Component : LM3352 Find Stock and Price

Shortcut : LM335  LM335  LM335  LM3350  LM3350MM  LM3350MMX  LM3351  LM3351MM  LM3351MMX  LM3352  LM3352MTC-2.5  LM3352MTC-3.0  LM3352MTC-3.3  LM3352MTCX-2.5  LM3352MTCX-3.0  LM3352MTCX-3.3  LM3354  LM3354-37  LM3354MM-1.8  LM3354MM-3.3  LM3354MM-3.7  LM3354MM-4.1  LM3354MM-5.0  LM3354MMX-1.8  LM3354MMX-3.3  LM3354MMX-3.7  LM3354MMX-4.1  LM3354MMX-5.0  LM3355  LM335A  LM335A  LM335A  LM335AH  LM335AZ  LM335H  LM335M  LM335Z  LM335Z 

Product Information

LM3352 Regulated 200 mA Buck-Boost Switched Capacitor DC/DC Converter September 1999 LM3352 Regulated 200 mA Buck-Boost Switched Capacitor DC/DC Converter General Description The LM3352 is a CMOS switched capacitor DC/DC converter that produces a regulated output voltage by automatically stepping up (boost) or stepping down (buck) the input voltage. It accepts an input voltage between 2.5V and 5.5V. The LM3352 is available in three standard output voltage versions: 2.5V, 3.0V and 3.3V. If other output voltage options between 1.8V and 4.0V are desired, please contact your National Semiconductor representative. The LM3352’s proprietary buck-boost architecture enables up to 200 mA of load current at an average efficiency greater than 80%. Typical operating current is only 400 µA and the typical shutdown current is only 2.5 µA. The LM3352 is available in a 16-pin TSSOP package. This package has a maximum height of only 1.1 mm. The high efficiency of the LM3352, low operating and shutdown currents, small package size, and the small size of the overall solution make this device ideal for battery powered, portable, and hand-held applications. n Custom output voltages available from 1.8V to 4.0V in 100 mV increments n 2.5V to 5.5V input voltage n Up to 200 mA output current n > 80% average efficiency n Uses few, low-cost external components n Very small solution size n 400 µA typical operating current n 2.5 µA typical shutdown current n 1 MHz switching frequency (typical) n Architecture and control methods provide high load current and good efficiency n TSSOP-16 package n Over-temperature protection Applications n 1-cell Lilon battery-operated equipment including PDAs, hand-held PCs, cellular phones n Flat panel displays n Hand-held instruments n NiCd, NiMH, or alkaline battery powered systems n 3.3V to 2.5V and 5.0V to 3.3V conversion Features n Regulated VOUT with ± 3% accuracy n Standard output voltage options: 2.5V, 3.0V and 3.3V Typical Operating Circuit DS101037-1 © 1999 National Semiconductor Corporation DS101037 www.national.com Connection Diagram DS101037-2 Top View TSSOP-16 Pin Package See NS Package Number MTC16 Ordering Information Order Number LM3352MTCX-2.5 LM3352MTC-2.5 LM3352MTCX-3.0 LM3352MTC-3.0 LM3352MTCX-3.3 LM3352MTC-3.3 Package Type TSSOP-16 TSSOP-16 TSSOP-16 TSSOP-16 TSSOP-16 TSSOP-16 NSC Package Drawing MTC16 MTC16 MTC16 MTC16 MTC16 MTC16 Supplied As 2.5k Units, Tape and Reel 94 Units, Rail 2.5k Units, Tape and Reel 94 Units, Rail 2.5k Units, Tape and Reel 94 Units, Rail Pin Description Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name GND C3− C3+ C2− C2+ C1− C1+ VOUT GND VIN NC GND SD GND CFIL GND Ground* Negative Terminal for C3 Positive Terminal for C3 Negative Terminal for C2 Positive Terminal for C2 Negative Terminal for C1 Positive Terminal for C1 Regulated Output Voltage Ground* Input Supply Voltage This pin must be left unconnected. Ground* Active Low CMOS Logic-Level Shutdown Input Ground* Filter Capacitor; A 1 µF ceramic capacitor is suggested. Ground* Function *All GND pins of the LM3352 must be connected to the same ground. www.national.com 2 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. VOUT Pin All Other Pins Power Dissipation (TA = 25˚C) (Note 2) TJMAX (Note 2) θJA (Note 2) Storage Temperature −0.5V to 4.5V −0.5V to 5.6V 700 mW 150˚C 150˚C/W −65˚C to +150˚C Lead Temperature (Soldering, 5 sec.) ESD Rating (Note 3) human body model machine model 260˚C 2 kV 100V Operating Ratings Input Voltage (VIN ) Output Voltage (VOUT ) Ambient Temperature (TA ) (Note 2) Junction Temperature (T J) (Note 2) 2.5V to 5.5V 1.8V to 4.0V −40˚C to +85˚C −40˚C to +125˚C Electrical Characteristics Limits in standard typeface are for TJ = 25˚C, and limits in boldface type apply over the full operating temperature r...

Link URL