LTC3200/LTC3200-5 Low Noise, Regulated Charge Pump DC/DC Converters FEATURES DESCRIPTIO n Low Noise Constant Frequency Operation The LTC 3200/LTC3200-5 are low noise, constant fre- n Output Current: 100mA quency switched capacitor voltage doublers. They pro- n Available in 8-Pin MSOP (LTC3200) and Low duce a regulated output voltage from a 2.7V to 4.5V input TM Profile (1mm) 6-Pin ThinSOT (LTC3200-5) with up to 100mA of output current. Low external parts Packages count (one flying capacitor and two small bypass capaci- n 2MHz Switching Frequency tors at V and V ) make the LTC3200/LTC3200-5 IN OUT n Fixed 5V 4% Output (LTC3200-5) or ADJ ideally suited for small, battery-powered applications. n V Range: 2.7V to 4.5V IN A new charge-pump architecture maintains constant n Automatic Soft-Start Reduces Inrush Current switching frequency to zero load and reduces both output n No Inductors and input ripple. The LTC3200/LTC3200-5 have thermal n I <1m A in Shutdown CC shutdown capability and can survive a continuous short- U circuit from V to GND. Built-in soft-start circuitry APPLICATIO S OUT prevents excessive inrush current during start-up. n White LED Backlighting High switching frequency enables the use of small ceramic n Li-Ion Battery Backup Supplies capacitors. A low current shutdown feature disconnects n Local 3V to 5V Conversion the load from V and reduces quiescent current to <1m A. IN n Smart Card Readers n PCMCIA Local 5V Supplies The LTC3200 is available in an 8-pin MSOP package and the LTC3200-5 is available in a 6-pin ThinSOT. , LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. TYPICAL APPLICATIO Output Ripple Voltage vs Load Current 40 Regulated 5V Output from a 2.7V to 4.5V Input V = 3V IN C = 1F FLY 1m F T = 25C A 30 4 6 + C C C = 1F OUT LTC3200-5 20 V IN 5 1 2.7V TO 4.5V V V = 5V 4% V IN OUT OUT I UP TO 40mA, V 2.7V 1m F OUT IN 1m F 2 C = 2.2F I UP TO 100mA, V 3.1V OUT GND OUT IN 10 3 SHDN OFF ON ALL CAPACITORS = MURATA GRM 39X5R105K6.3AJ 0 0 25 50 75 100 OR TAIYO YUDEN JMK107BJ105MA 3200-5 TA01 OUTPUT CURRENT (mA) 3200 TA02 1 OUTPUT RIPPLE (mV ) P-P U ULTC3200/LTC3200-5 ABSOLUTE AXI U RATI GS (Note 1) V to GND ...................................................0.3V to 6V V Short-Circuit Duration ............................. Indefinite OUT IN V to GND .............................................0.3V to 5.5V Operating Temperature Range (Note 3) .. 40 C to 85 C OUT V , SHDN to GND ........................ 0.3V to (V + 0.3V) Storage Temperature Range ................. 65 C to 150 C FB IN I (Note 2) ....................................................... 150mA Lead Temperature (Soldering, 10 sec).................. 300 C OUT UUW PACKAGE/ORDER I FOR ATIO ORDER PART ORDER PART TOP VIEW NUMBER NUMBER TOP VIEW + + C 1 8 V OUT V 1 6 C OUT V 2 7 FB LTC3200EMS8 LTC3200ES6-5 IN GND 2 5 V IN 6 SHDN C 3 PGND 4 5 SGND SHDN 3 4 C MS8 PACKAGE S6 PACKAGE MS8 PART MARKING S6 PART MARKING 8-LEAD PLASTIC MSOP 6-LEAD PLASTIC SOT-23 T = 150 C, q = 200 C/W JMAX JA T = 150 C, q = 230 C/W JMAX JA LTNV LTSH Consult factory for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the full operating temperature range. Specifications are at T = 25 C, V = 3.6V, C = 1m F, C = 1m F, C = 1m F unless otherwise noted. A IN FLY IN OUT SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Input Voltage l 2.7 4.5 V IN V Output Voltage 2.7V V 4.5V, I 40mA l 4.8 5 5.2 V OUT IN OUT 3.1V V 4.5V, I 100mA l 4.8 5 5.2 V IN OUT I Operating Supply Current I = 0mA, SHDN = V l 3.5 8 mA CC OUT IN I Shutdown Current SHDN = 0V, V = 0V l 1 m A SHDN OUT V FB Voltage (LTC3200) l 1.217 1.268 1.319 V FB I FB Input Current (LTC3200) V = 1.4V l 50 50 nA FB FB V Output Ripple (LTC3200-5) V = 3V, I = 100mA 30 mV R IN OUT P-P h Efficiency (LTC3200-5) V = 3V, I = 50mA 80 % IN OUT F Switching Frequency 1 2 MHz OSC V SHDN Input Threshold l 1.3 V IH V SHDN Input Threshold l 0.4 V IL I SHDN Input Current SHDN = V l 1 1 m A IH IN I SHDN Input Current SHDN = 0V l 1 1 m A IL t V Turn-On Time V = 3V, I = 0mA, 10% to 90% 0.8 ms ON OUT IN OUT R Open-Loop Output Resistance V = 3V, I = 100mA, V = 0V (Note 4) 9.2 W OL IN OUT FB Note 1: Absolute Maximum Ratings are those values beyond which the life Note 3: The LTC3200E/LTC3200E-5 are guaranteed to meet performance of a device may be impaired. specifications from 0 C to 70 C. Specifications over the 40 C to 85 C operating temperature range are assured by design, characterization and Note 2: Based on long term current density limitations. correlation with statistical process controls. Note 4: R (2 V V )/I OL IN OUT OUT 2 U WWW