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LTC3200-5 Datasheet(PDF) 1 Page - Linear Technology |
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LTC3200-5 Datasheet(HTML) 1 Page - Linear Technology |
1 / 12 page LTC3200/LTC3200-5 1 APPLICATIO S DESCRIPTIO FEATURES TYPICAL APPLICATIO The LTC ®3200/LTC3200-5 are low noise, constant fre- quency switched capacitor voltage doublers. They pro- duce a regulated output voltage from a 2.7V to 4.5V input with up to 100mA of output current. Low external parts count (one flying capacitor and two small bypass capaci- tors at VIN and VOUT) make the LTC3200/LTC3200-5 ideally suited for small, battery-powered applications. A new charge-pump architecture maintains constant switching frequency to zero load and reduces both output and input ripple. The LTC3200/LTC3200-5 have thermal shutdown capability and can survive a continuous short- circuit from VOUT to GND. Built-in soft-start circuitry prevents excessive inrush current during start-up. High switching frequency enables the use of small ceramic capacitors. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to <1µA. The LTC3200 is available in an 8-pin MSOP package and the LTC3200-5 is available in a 6-pin ThinSOT. s White LED Backlighting s Li-Ion Battery Backup Supplies s Local 3V to 5V Conversion s Smart Card Readers s PCMCIA Local 5V Supplies , LTC and LT are registered trademarks of Linear Technology Corporation. s Low Noise Constant Frequency Operation s Output Current: 100mA s Available in 8-Pin MSOP (LTC3200) and Low Profile (1mm) 6-Pin ThinSOT TM (LTC3200-5) Packages s 2MHz Switching Frequency s Fixed 5V ± 4% Output (LTC3200-5) or ADJ s VIN Range: 2.7V to 4.5V s Automatic Soft-Start Reduces Inrush Current s No Inductors s ICC <1µA in Shutdown Low Noise, Regulated Charge Pump DC/DC Converters Regulated 5V Output from a 2.7V to 4.5V Input Output Ripple Voltage vs Load Current OUTPUT CURRENT (mA) 0 20 30 100 3200 TA02 10 0 25 50 75 40 COUT = 2.2µF COUT = 1µF VIN = 3V CFLY = 1µF TA = 25°C 1 LTC3200-5 2 3 6 5 4 VOUT 3200-5 TA01 1 µF 1 µF 1 µF GND C+ VIN C – SHDN ON OFF VIN 2.7V TO 4.5V VOUT = 5V ±4% IOUT UP TO 40mA, VIN ≥ 2.7V IOUT UP TO 100mA, VIN ≥ 3.1V ALL CAPACITORS = MURATA GRM 39X5R105K6.3AJ OR TAIYO YUDEN JMK107BJ105MA ThinSOT is a trademark of Linear Technology Corporation. |
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