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analog microelectronics, inc. 1 AME7700/ame7701/ame7702 switched capacitor voltage doublers preliminary n n n n n features l small packages: sot-25, sot-26 l +1.5v to +5.5v input range l 60ua quiescent current ( AME7700) l 99% conversion efficiency l output current exceeding 100ma l user selectable frequency ( ame7702) n n n n n general description the AME7700 series of economical, charge-pump converters efficiently double a +1.5v to +5.5v input to +3.0v to +11v, with a working current exceeding 100ma. due to their simplicity, small size, and performance, these cmos converters have numerous applications. for most cases, only (2) external capacitors are re- quired, however, in some cases, a single capacitor is acceptable. minimum capacitance is obtained with the ame7701, while the AME7700 offers the lowest stand- by current. the ame7702 has a frequency-select pin for added flexibility. the input voltage can be tripled or quadrupled by cascading 2 charge-pumps. a single alkaline battery with its low start-up voltage, a single alkaline battery can be configured with (2) AME7700s to quadruple the voltage and produce 5v out. alternately, with a 5v source, (2) AME7700s can be configured to triple the voltage and produce 15v out. n n n n n applications l cellular phones l digital cameras l battery chargers l high tech flashlights l pdas - lcd displays l consumer electronics l pagers n n n n n pin configuration l portable electronics 4 5 12 3 AME7700 ame7701 n n n n n typical connection 4 5 1 2 3 6 ame7702 ame 7700/7701 sot-25 top view sot-26 top view 1: gnd 4: in 1: gnd 4: in 2: out 5: cp 2: cn 5: fc 3: cn 3: out 6: cp v out v in dc out cn gnd in cp c1 c2
analog microelectronics, inc. 2 AME7700/ame7701/ame7702 switch capacitor voltage doublers preliminary n n n n n order information n n n n n pin description AME7700aeev/ ame7701aeev ame7702aeey pin designation function 1 gnd ground (-supply) 2 out power output 3 cn capacitor (-) 4 in power input 5 cp capacitor (+) pin designation function 1 gnd ground (-supply) 2 cn capacito r(-) 3 out power output 4 in power input 5 fc frequency control 6 cp capacitor (+) part number package operating temp. AME7700aeev sot-25 -40 o c to +85 o c ame7701aeev sot-25 -40 o c to +85 o c ame7702aeey sot-26 -40 o c to +85 o c
analog microelectronics, inc. 3 AME7700/ame7701/ame7702 switched capacitor voltage doublers preliminary n n n n n absolute maximum ratings n n n n n recommended operating conditions n n n n n thermal information maximum unit 6v b parameter s up p ly v o lta g e esd classification rating 1.5 - 5.5 v -40 to +85 o c -40 to +125 o c ambient temperature range junction temperature supply voltage parameter maximum unit 250 o c / w 150 o c 300 o c caution: stress above the listed absolute rating may cause permanent damage to the device thermal resistance (sot-25,26) maximum lead temperature ( 10 sec) maximum junction temperature parameter
analog microelectronics, inc. 4 AME7700/ame7701/ame7702 switch capacitor voltage doublers preliminary t a = 25 c, v in = 5v unless otherwise noted,c 1 = c 2 = 3.3 m m m m f 60 100 215 300 supply voltage range v in 1.5 5.5 v 8.5 12 15.5 24.5 35 45.5 40 50 20 35 voltage conversion efficiency v eff 97 99 % power efficiency p eff 88 92 % no load current i in test conditions parameter symbol AME7700 ame7702 fc is lo ame7701 ame7702 fc is hi oscillator frequency f osc output resistance ro no load r l = 10 k ohms khz AME7700 ame7702 fc is lo ame7701 ame7702 fc is hi AME7700 ame7702 fc is lo ame7701 ame7702 fc is hi m a units r l = 10 k min typ max n n n n electrical specification
analog microelectronics, inc. 5 AME7700/ame7701/ame7702 switched capacitor voltage doublers preliminary 0 2 4 6 8 10 12 050100150 load regulation v out i ( ma) 0 2 4 6 8 10 12 0 50 100 150 load reg i(ma) v out vin=5 vin=3.3 vin=2 0 20 40 60 80 100 120 140 160 25 50 75 100 125 150 electrical characteristics vs. temp r out / i dd temperature( 0 c) AME7700 ame7701 i dd r out AME7700 0 5 10 15 20 25 30 35 123456 input voltage (v) oscillator frequency (khz) ame7701 AME7700 osc. freq. @ 25c 2.2 m f 3.3 m f 25 30 35 40 45 50 23456 input voltage (v) output resistance (ohm) 2.2 m f 3.3 m f AME7700 output resistance @25c supply current @ 25c ame7701 AME7700 0 50 100 150 200 250 300 123456 input voltage (v) supply current(ma) ame7701 AME7700
analog microelectronics, inc. 6 AME7700/ame7701/ame7702 switch capacitor voltage doublers preliminary n n n n n applications single cell led flashlight ame 7701 gnd cn 1 watt fluorescent lamp driver 5v/200ma 1uf 1 : 250 ccfl in ame 7700 led - + aa 1.5v in cn cp out gnd
analog microelectronics, inc. 7 AME7700/ame7701/ame7702 switched capacitor voltage doublers preliminary n n n n n applications(continued) 1.25v to 5.0v converter ame 7701 ame 7701 - + - + ++ 5v out 1.25v gnd cn cp in out 1uf 1uf 1uf 1uf cn cp in out gnd gnd
analog microelectronics, inc. 8 AME7700/ame7701/ame7702 switch capacitor voltage doublers preliminary n n n n n applications(continued) +5v to +15v converter 3.3v-input to regulated 5v-output converter +5v in gnd - + + - + + (+10v) +15v out ame 7700 ame 7700 10uf 10uf 10uf 10uf gnd in out cn cp in out gnd cn cp ame 7700 ame 8800 5v out 3.3v in + + + 1uf 1uf 1uf cn cp in out gnd gnd out in
analog microelectronics, inc. 9 AME7700/ame7701/ame7702 switched capacitor voltage doublers preliminary n n n n n applications(continued) paralleling devices ame 7701 ame 7701 3.3uf - + 3.3uf 3.3uf - + + v in v out cn cp gnd out in cn cp in out gnd
analog microelectronics, inc. 10 AME7700/ame7701/ame7702 switch capacitor voltage doublers preliminary min max min max a 1.00 1.45 0.0394 0.0571 a 1 0.00 0.15 0.0000 0.0591 a2 0.70 1.25 0.0276 0.0492 b 0.35 0.55 0.0138 0.0217 c 0.08 0.25 0.0031 0.0098 d 2.70 3.10 0.1063 0.1220 e 1.40 1.80 0.0551 0.0709 e h 2.60 3.00 0.1024 0.1181 l 0.30 - 0.0118 - q1 q1 q1 q1 0 10 0 10 s 1 0.85 1.05 0.0335 0.0413 1.90 bsc 0.07480 bsc symbols millimeters inches min max min max a 1.00 1.40 0.0394 0.0551 a 1 0.00 0.15 0.0000 0.0591 a2 0.70 1.25 0.0276 0.0492 b 0.35 0.50 0.0138 0.0197 c 0.08 0.25 0.0031 0.0098 d 2.70 3.10 0.1063 0.1220 e 1.40 1.80 0.0551 0.0709 e h 2.60 3.00 0.1024 0.1181 l 0.35 - 0.0138 - q q q q 1 0 9 0 9 s 1 0.85 1.05 0.0335 0.0413 1.90 bsc 0.0748 bsc symbols millimeters inches n n n n n package dimension sot-25 sot-26
life support policy: these products of analog microelectronics, inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of analog microelectronics, inc. analog microelectronics, inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. ? analog microelectronics, inc. , july 2001 document: 2027-doc-b-0731 corporate headquarters asia pacific headquarters analog microelectronics, inc. ame, inc. 3100 de la cruz blvd. suite 201 2f, 187 ,kang-chien rd,nei-hu dist santa clara, ca. 95054-2046 taipei 114, taiwan, r.o.c. tel : (408) 988-2388 tel : 886 2 2627-8687 fax: (408) 988-2489 fax: 886 2 2659-2989 www.analogmicro.com e-mail: info@analogmicro.com

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