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| rn5rf series low ripple voltage regulator with external transistor no. ea-043-111116 1 outline the rn5rf series are cmos-based voltage regulator ics wh ich control external driver transistors with high ripple rejection, high accuracy output voltage, low supply current. each of these voltage regulator ics consists of a voltage reference unit, an error amplifier, output voltage setting resistor, short circuit current limiting circuit and chip enable circuit. these ics are suitable for constructing regulators with ultra low dropout voltage and an output current in the range of several tens of ma and se veral hundreds ma. in addition to low supply current by cmos process, chip enable function can be used to conserve battery life during standby. furthermore, a supreme ripple rejection and a transient response are suitable for portable communicator such as cell phones, pdas, walky talkies. sot23-5 (mini mold) package is available. features ? supply curre nt ............................................................. typ. 30 a ? supply current (s tandby) ........................................... ty p. 0.1 a ? output voltage accuracy.............................................. 2% ? ripple reject ion........................................................... typ. 60db (f=1khz) ? dropout voltage ........................................................... typ. 0.1v (i out = 100ma, dependent on external tr.) ? temperature-drift coefficient of output voltage .......... typ. 100ppm/ c ? line regulation ............................................................ typ. 0.05%/v ? output voltage range.................................................. 1.2v to 6.0v (0.1v steps) ( for other voltages, please refer to mark informations.) ? package ....................................................................... sot-23-5 ? current limit for external tr. ........................................ current limit typ. 8ma applications ? power source for battery-powered equipment ? power source for hand-held communication equipment, cameras, and vcrs ? power source for home appliances
rn5rf 2 block diagrams rn5rfxxa rn5rfxxb 2 5 1 v out gnd v dd ce vref 3 current limit + - 4 ext 2 5 1 v out gnd v dd ce vref 3 current limit + - 4 ext selection guide the output voltage and ce pin polarity for the ics can be selected at the user?s request. product name package quantity per reel pb free halogen free rn5rfxx ? a-tr-fe sot-23-5 3,000 pcs yes yes xx : the output voltage can be designated in the range from 1.2v (12) to 6.0v (60) in 0.1v steps. (for other voltages, please refer to mark informations.) ? : ce pin polarity are options as follows (a) "l" active (b) "h" active rn5rf 3 pin configuration z sot-23-5 1 4 5 23 (mark side) pin description x sot-23-5 pin no symbol pin description 1 gnd ground pin 2 v dd input pin 3 v out output pin 4 ext external transistor drive pin (cmos output) 5 ce or ce chip enable pin rn5rf 4 absolute maximum ratings symbol item rating unit v in input voltage 12.0 v v ce input voltage ( ce or ce) ? 0.3 to v in + 0.3 v v ext ext output voltage ? 0.3 to v in + 0.3 v i ext ext output current 50 ma p d power dissipation ? (sot-23-5) 420 mw t opt operating temperature range ? 40 to 85 c t stg storage temperature range ? 55 to 125 c ? ) for power dissipation, please refer to package information. absolute maximum ratings electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and sy stem using the device in the field. the functional operation at or over these absolute maximum ratings is not assured. recommended operating conditions (electrical characteristics) all of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. the semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. and the semiconductor de vices may receive serious damage when they continue to operate over the recommended operating conditions. rn5rf 4 electrical characteristics ? rn5rfxxa ;+= symbol item conditions min. typ. max. unit 5 5 ; ;1&' 1#j> 3#1+ 5 5 5 ;3#15 3#1 ' $g 5 ;f#15!5 ;+#15 > 3 &' ? 5 : ? 0 5 5 ;3#15 3&' 311&' 81 81 &5 5 ) 5 ;311&'! ;1&' 1#3 1#+ 5 " 5 5 ;3#15 ,1 1 2' " " 5 ;31#15 1#13 1#31 3#11 2' $g0 * 1# 2' ? 5 : ? 5 0 ;1&' 5 h1#5 5 315 1#11 1#1 1#,1 7:5 %;3*4 $g 5 31 5 ? 5 : ? 5 & %% ;31&' f1= >= 6311 &:= ( % $ f ? 5 ce 5 c4d 3# 5 5 5 ce 5 c0d 1#11 1#+ 5 *1) the output current depends on the performance of external pnp transistor. use external pnp transis- tor of a low saturation type, with an h fe between 100 and 300. *) with respect to test circuit, refer to typical application. rn5rf 5 ? rn5rfxxb ;+= symbol item conditions min. typ. max. unit 5 5 5 5 ;3#15 ;1&' 1#j> 3#1+ 5 5 5 ;3#15 3#1 ' $g 5 ;f#15!5 ;+#15 > 3 &' ? 5 : ? 0 5 5 ;3#15 3&' 311&' 81 81 &5 5 ) 5 ;311&' 1#3 1#+ 5 " 5 b5 ;3#15 ;1&' ,1 1 2' " " 5 ;31#15 1#13 1#31 3#11 2' $g0 * 1# 2' ? 5 : ? v 0 ;1&' 5 h1#5 5 315 1#11 1#1 1#,1 7:5 %;3*4 $g 5 31 5 ? 5 : ? 5 & %% ;31&' f1= >= 6311 &:= ( % $ f ? 5 $ 5 c4d 3# 5 5 5 $ 5 c0d 1#11 1#+ 5 *1) the output current depends on the performance of external pnp transistor. use external pnp transis- tor of a low saturation type, with an h fe between 100 and 300. *) with respect to test circuit, refer to typical application. rn5rf 6 operation 2 5 1 v out gnd v dd ce vref 3 current limit + - 4 ext in gnd rn5rfxxa pnp tr ra rb c l c out gnd ! 5 5 "% * ! & % " & % % (( 5 # % # & " & * # & ! & & " !5 & # notes on selecting external components -3. (( 9 %% ! % (( # $ (( 5 - . 311 ,11 # -+. & ! & & % % # ! - &" . %312% & # & " * & $ ! %" % ? " # rn5rf 7 test circuits pnp ext v out out 10f gnd ce 10f v dd in rn5rfxxa 5 1 3 4 2 i out pnp ext v out out 10f gnd ce 10f v dd in rn5rfxxa 5 1 3 4 2 i ss basic test circuit test circuit for supply current pnp ext v out out 10f gnd ce v dd in rn5rfxxa 5 1 3 4 2 p.g i out pnp ext v out out 10f gnd ce 10f v dd in rn5rfxxa 5 1 3 4 2 test circuit for ripple rejection and line transient response test circuit for load transient response rn5rf 8 typical characteristics 1) output voltage vs. input voltage (topt=25c) rn5rf30a rn5rf50a 3.20 2.60 2.40 2.20 3.00 2.80 2.00 input voltage v in (v) output voltage v out (v) 2345678910 i out =0ma i out =100ma i out =500ma 5.20 4.60 4.40 4.20 5.00 4.80 4.00 input voltage v in (v) output voltage v out (v) 45678910 i out =0ma i out =100ma i out =500ma 2) output voltage vs. output current (topt=25c) rn5rf30a rn5rf50a 3.10 2.95 2.90 2.85 3.05 3.00 2.80 output current i out (ma) output voltage v out (v) 0 100 200 300 400 500 v in =4v 5.10 4.95 4.90 4.85 5.05 5.00 4.80 output current i out (ma) output voltage v out (v) 0 100 200 300 400 500 v in =6v 3) dropout voltage vs. output current rn5rf30a rn5rf50a 0.50 0.20 0.40 0.30 0.10 0.00 output current i out (ma) dropout voltage v dif (v) 0 300 100 200 400 500 topt=-40 topt=25 topt=85 0.50 0.20 0.40 0.30 0.10 0.00 output current i out (ma) dropout voltage v dif (v) 0 300 100 200 400 500 topt=-40 topt=25 topt=85 rn5rf 9 4) output voltage vs. temperature rn5rf30a rn5rf50a 3.10 3.00 3.05 2.95 2.90 temperature topt( ) output voltage v out (v) -50 25 -25 0 50 75 100 v in =4v,i out =10ma 5.10 5.00 5.05 4.95 4.90 -50 25 -25 0 50 75 100 v in =6v,i out =10ma temperature topt( ) output voltage v out (v) 5) supply current vs. input voltage (topt=25 c) rn5rf30a rn5rf50a 100 60 50 80 70 90 40 30 20 10 0 input voltage v in (v) supply current i ss (a) 04 26810 i out =0ma 100 60 50 80 70 90 40 30 20 10 0 input voltage v in (v) supply current i ss (a) 04 26810 i out =0ma 6) supply current vs. temperature rn5rf30a rn5rf50a 50 30 40 20 10 0 temperature topt( ) supply current i ss (a) -50 0-25 25 50 75 100 v in =4v,i out =0ma 50 30 40 20 10 0 temperature topt( ) supply current i ss (a) -50 0-25 25 50 75 100 v in =6v,i out =0ma rn5rf 10 7) ripple rejection vs. frequency (topt=25 c) rn5rf30a rn5rf50a 80 70 50 60 40 20 30 10 0 frequency (khz) ripple rejection (db) 0.01 0.1 1 10 100 v in =4vdc+0.5vp-p,i out =100ma,c l =10f 80 70 50 60 40 20 30 10 0 frequency (khz) ripple rejection (db) 0.01 0.1 1 10 100 v in =6vdc+0.5vp-p,i out =100ma,c l =10f 8) line transient response (topt=25 c) rn5rf30a rn5rf50a 6 5 4 3 2 1 0 time t(s) input voltage v in (v) -50 0-25 25 50 75 100 125 150 i out =300ma,c l =10f 3.3 3.2 3.1 3 2.9 2.8 2.7 output voltage v out (v) input voltage output voltage 8 7 6 5 4 3 2 time t(s) input voltage v in (v) -50 0-25 25 50 75 100 125 150 i out =300ma,c l =10f 5.3 5.2 5.1 5 4.9 4.8 4.7 output voltage v out (v) input voltage output voltage 9) load transient response (topt=25 c) rn5rf30a rn5rf50a 200 100 0 -100 -200 -300 -400 3.3 3.2 3.1 3 2.9 2.8 2.7 time t(s) output current i out (ma) output voltage v out (v) -100 0 100 200 300 400 v in =4v,c l =10f output current output voltage 200 100 0 -100 -200 -300 -400 time t(s) output current i out (ma) -100 0 100 200 300 400 v in =6v,c l =10f 5.3 5.2 5.1 5 4.9 4.8 4.7 output voltage v out (v) output current output voltage rn5rf 11 typical application pnp tr ext out cap. + gnd ce v dd in rn5rfxxa v out cap. + components transistor: 2sb766a capacitor: 10f (tantalum type) http://www.e-devices.ricoh.co.jp/en/ 4 b m f t 4 v q q p s u 0$? d f t 3 * $ 0 ) & - & $ 5 3 0 / * $ % & 7 * $ & 4 $ 0 - 5 % ) j h b t i j 4 i j o b h b x b 0$? d f * o u f s o b u j p o b m 4 b m f t ) j h b t i j 4 i j o b h b x b 4 i j o b h b x b l v 5 p l z p + b q b o 1 i p o f ' b y 3 * $ 0 ) & 6 3 0 1 & / & 5 ) & 3 - " / % 4 # 7 4 f n j d p o e v d u p s 4 v q q p s u $ f o u s f 1 s p g 8 ) , f f t p n m b b o % + " n t u f m w f f o 5 i f / f u i f s m b o e t 1 i p o f 3 * $ 0 ) & - & $ 5 3 0 / * $ % & 7 * $ & 4 , 0 3 & " $ 0 - 5 % ' ) b f t v o h # m e h 5 f i f s b o s p ( b o h o b n h v 4 f p v m , p s f b 1 i p o f ' b y 3 * $ 0 ) & - & $ 5 3 0 / * $ % & 7 * $ & 4 4 ) " / ( ) " * $ 0 - 5 % 3 p p n / p # v j m e j o h / p # j c p 3 p b e 1 v % p o h / f x % j t u s j d u 4 i b o h i b j 1 f p q m f t 3 f q v c m j d p g $ i j o b 1 i p o f ' b y 3 * $ 0 ) & - & $ 5 3 0 / * $ % & 7 * $ & 4 $ 0 - 5 % 5 b j q f j p$? d f 3 p p n ' / p ) f o h z b o h 3 e 5 b j q f j $ j u z 5 b j x b o 3 0 $ 1 i p o f ' b y ricoh is committed to reducing the environmental loading materials in electrical devices with a view to contributing to the protection of human health and the environment. ricoh has been providing rohs compliant products since april 1, 2006 and halogen-free products since april 1, 2012. halogen free 5 i f q s p e v d u t b o e u i f q s p e v d u t q f d j p d b u j p o t e f t d s j c f e j o u i j t e p d v n f o u b s f t v c k f d u u p d i b o h f p s e j t d p o u j o v b u j p o p g q s p e v d u j p o x j u i p v u o p u j d f g p s s f b t p o t t v d i b t j n q s p w f n f o u 5 i f s f g p s f c f g p s f e f d j e j o h u p v t f u i f q s p e v d u t q m f b t f s f g f s u p 3 j d p i t b m f t s f q s f t f o u b u j w f t g p s u i f m b u f t u j o g p s n b u j p o u i f s f p o 5 i f n b u f s j b m t j o u i j t e p d v n f o u n b z o p u c f d p q j f e p s p u i f s x j t f s f q s p e v d f e j o x i p m f p s j o q b s u x j u i p v u q s j p s x s j u u f o d p o t f o u p g 3 j d p i 1 m f b t f c f t v s f u p u b l f b o z o f d f t t b s z g p s n b m j u j f t v o e f s s f m f w b o u m b x t p s s f h v m b u j p o t c f g p s f f y q p s u j o h p s p u i f s x j t f u b l j o h p v u p g z p v s d p v o u s z u i f q s p e v d u t p s u i f u f d i o j d b m j o g p s n b u j p o e f t d s j c f e i f s f j o 5 i f u f d i o j d b m j o g p s n b u j p o e f t d s j c f e j o u i j t e p d v n f o u t i p x t u z q j d b m d i b s b d u f s j t u j d t p g b o e f y b n q m f b q q m j d b u j p o d j s d v j u t g p s u i f q s p e v d u t 5 i f s f m f b t f p g t v d i j o g p s n b u j p o j t o p u u p c f d p o t u s v f e b t b x b s s b o u z p g p s b h s b o u p g m j d f o t f v o e f s 3 j d p i t p s b o z u i j s e q b s u z t j o u f m m f d u v b m q s p q f s u z s j h i u t p s b o z p u i f s s j h i u t 5 i f q s p e v d u t m j t u f e j o u i j t e p d v n f o u b s f j o u f o e f e b o e e f t j h o f e g p s v t f b t h f o f s b m f m f d u s p o j d d p n q p o f o u t j o t u b o e b s e b q q m j d b u j p o t p$? d f f r v j q n f o u u f m f d p n n v o j d b u j p o f r v j q n f o u n f b t v s j o h j o t u s v n f o u t d p o t v n f s f m f d u s p o j d q s p e v d u t b n v t f n f o u f r v j q n f o u f u d 5 i p t f d v t u p n f s t j o u f o e j o h u p v t f b q s p e v d u j o b o b q q m j d b u j p o s f r v j s j o h f y u s f n f r v b m j u z b o e s f m j b c j m j u z g p s f y b n q m f j o b i j h i m z t q f d j p d b q q m j d b u j p o x i f s f u i f g b j m v s f p s n j t p q f s b u j p o p g u i f q s p e v d u d p v m e s f t v m u j o i v n b o j o k v s z p s e f b u i b j s d s b g u t q b d f w f i j d m f o v d m f b s s f b d u p s d p o u s p m t z t u f n u s b$? d d p o u s p m t z t u f n b v u p n p u j w f b o e u s b o t q p s u b u j p o f r v j q n f o u d p n c v t u j p o f r v j q n f o u t b g f u z e f w j d f t m j g f t v q q p s u t z t u f n f u d t i p v m e p s t u d p o u b d u v t 8 f b s f n b l j o h p v s d p o u j o v p v t f$? p s u u p j n q s p w f u i f r v b m j u z b o e s f m j b c j m j u z p g p v s q s p e v d u t c v u t f n j d p o e v d u p s q s p e v d u t b s f m j l f m z u p g b j m x j u i d f s u b j o q s p c b c j m j u z * o p s e f s u p q s f w f o u b o z j o k v s z u p q f s t p o t p s e b n b h f t u p q s p q f s u z s f t v m u j o h g s p n t v d i g b j m v s f d v t u p n f s t t i p v m e c f d b s f g v m f o p v h i u p j o d p s q p s b u f t b g f u z n f b t v s f t j o u i f j s e f t j h o t v d i b t s f e v o e b o d z g f b u v s f p s f d p o u b j o n f o u g f b u v s f b o e g b j m t b g f g f b u v s f 8 f e p o p u b t t v n f b o z m j b c j m j u z p s s f t q p o t j c j m j u z g p s b o z m p t t p s e b n b h f b s j t j o h g s p n n j t v t f p s j o b q q s p q s j b u f v t f p g u i f q s p e v d u t " o u j s b e j b u j p o e f t j h o j t o p u j n q m f n f o u f e j o u i f q s p e v d u t e f t d s j c f e j o u i j t e p d v n f o u 1 m f b t f d p o u b d u 3 j d p i t b m f t s f q s f t f o u b u j w f t t i p v m e z p v i b w f b o z r v f t u j p o t p s d p n n f o u t d p o d f s o j o h u i f q s p e v d u t p s u i f u f d i o j d b m j o g p s n b u j p o |
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