BL78XX 3-Terminal 1A Positive Voltage Regulator BL78XX GENERAL DESCRIPTION The B L7 8XX se rie s of th re e -termina l po sitive reg u la to r are a va ila ble in the TO-220 pa cka ge an d with se ve ra l fix ed ou tp ut voltage s, mak in g th e m use fu l in a wide ran ge of a pp lica tio ns. Each t ype e mp lo ys in te rna l cu rren t limiting , therma l shu t d own and sa fe ope rating area p ro te c tion, mak in g it esse ntia lly ind estru ctible. If a deq ua te h ea t sink ing is p ro vided , th e y can de liver o ver 1A outpu t cu rren t. Althoug h de sign ed prima ril y a s fix ed vo ltage regu la tors, the se d e vice s can b e u se d with ex te rn a l c o mpon en ts to ob ta in a d justab le vo ltag es a nd cu rren ts. FEATURE Outpu t Cu rren t up to 1 A Therma l O ve rloa d P ro tec tion Short C ircu it P ro te c tio n Outpu t Tran sisto r Sa fe Opera ting A rea P ro te c tion Outpu t Vo ltag es : B L7805 : 5V B L78 06 : 6V B L7 808 : 8 V B L7 809 : 9V B L78 12: 12V B L781 5 :15V PIN CONNECTIONS Page1 www.belling.com.cn V1.0 BL78XX BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS (Ta =25°C ) Charac te ristics S ymb o l Value Units Vi 35 V Therma l Re sista nce Ju nc tion -Ca se Rθ JC 5 °C/W Therma l Re sista nce Ju nc tion -A ir Rθ JA 65 °C/W Opera ting Te mpe ra tu re Range TOPR -20~+8 5 °C Storag e Te mpe ra tu re R ange TSTG -55~+1 50 °C Inp ut Vo ltag e Page2 www.belling.com.cn V1.0 BL78XX BL7805 ELECTRICAL CHARACTERISTICS (Re fe r to the test circu it, -2 0 °C ＜ T J ＜ 85 °C , Io=500 mA , Vi= 10V, C i=0.33µ F, Co=0 .1µ F, unless o the rwise spe cifie d Charac te ristics S ymb o l Test Co nd ition s TJ=+25°C O u t p u t Vo l t a g e Line Regulation * Lo a d R e g u l a t i o n * Vo Regline Regload 5.0mA≤ Io≤ 1.0A,Po≤ 15W Vi = 7 V t o 2 0 V Min Typ Max 4.8 5.0 5.2 V 4.75 5.0 5.25 Vi = 7 V t o 2 5 V 4.0 100 Vi = 8 V t o 1 2 V 1.6 50 Io=5.0mA to 1.5A 15 100 4 50 5.0 8.0 0.03 0.5 0.3 1.3 mV TJ=+25°C mV TJ=+25°C Io=250mA to 750mA Quiescent Current IQ Quiescent Current Change Δ IQ TJ=+25°C Io=5.0mA to 1.0A mA mA Vi = 7 V t o 2 5 V O u t p u t Vo l t a g e D r i f t Unit Δ Vo / Δ T I o = 5 . 0 m A O u t p u t N o i s e Vo l t a g e VN f = 1 0 H z t o 1 0 0 K H z , T A = + 2 5 °C Ripple Rejection RR f=120Hz D r o p o u t Vo l t a g e VDrop Vi = 8 V t o 1 8 V Io=1A, TJ=+25°C 62 -0. 8 mV/°C 42 µ V/Vo 73 dB 2 V Short Circuit Current ISC Vi = 3 5 V, T A = + 2 5 ° C 230 mA Peak Current IPK TJ=+25°C 2.2 A *Loa d an d line reg u la tion are spec ifie d a t c o nstan t ju nc tion te mpe ra tu re . Cha nge s in Vo due to he a ting e ffe c ts must b e tak en in to a cc oun t sepa ra tel y. P u lse testing with lo w du ty is u sed . Page3 www.belling.com.cn V1.0 BL78XX BL7806 ELECTRICAL CHARACTERISTICS (Re fe r to th e test c ircu it, -20 °C ＜ T J ＜ 8 5 °C , Io=500 mA , Vi=11V, Ci=0.33µ F, C o=0.1µ F, unless o the rwise spe cifie d Charac te ristics S ymb o l Test Co nd ition s TJ=+25°C O u t p u t Vo l t a g e Line Regulation * Lo a d R e g u l a t i o n * Vo Regline Regload Quiescent Current IQ Quiescent Current Change Δ IQ O u t p u t Vo l t a g e D r i f t 5.0mA≤ Io≤ 1.0A,Po≤ 15W Vi = 8 V t o 2 1 V Min Typ Max 5.75 6.0 6.25 Unit V 5.7 6.0 6.3 Vi = 8 V t o 2 5 V 5.0 120 Vi = 9 V t o 1 3 V 1.5 60 Io=5.0mA to 1.5A 9 120 Io=250mA to 750mA 3 60 5.0 8.0 mV TJ=+25°C mV TJ=+25°C TJ=+25°C Io=5.0mA to 1.0A 0.5 Vi = 8 V t o 2 5 V 1.3 mA mA Δ Vo / Δ T I o = 5 . 0 m A O u t p u t N o i s e Vo l t a g e VN f = 1 0 H z t o 1 0 0 K H z , T A = + 2 5 °C Ripple Rejection RR f=120Hz D r o p o u t Vo l t a g e VDrop Vi = 9 V t o 1 9 V Io=1A, TJ=+25°C 59 -0. 8 mV/°C 45 µ V/Vo 75 dB 2 V Short Circuit Current ISC Vi = 3 5 V, T A = + 2 5 ° C 250 mA Peak Current IPK TJ=+25°C 2.2 A *Loa d an d line reg u la tion are spec ifie d a t c o nstan t ju nc tion te mpe ra tu re . Cha nge s in Vo due to he a ting e ffe c ts must b e tak en in to a cc oun t sepa ra tel y. P u lse testing with lo w du ty is u sed . Page4 www.belling.com.cn V1.0 BL78XX BL7808 ELECTRICAL CHARACTERISTICS (Re fe r to the test circu it, -2 0 °C ＜ T J ＜ 85 °C , Io=500 mA , Vi= 14V, C i=0.33µ F, Co=0 .1µ F, unless o the rwise spe cifie d Charac te ristics S ymb o l Test Co nd ition s TJ=+25°C O u t p u t Vo l t a g e Line Regulation * Lo a d R e g u l a t i o n * Vo Regline Regload Quiescent Current IQ Quiescent Current Change Δ IQ O u t p u t Vo l t a g e D r i f t 5.0mA≤ Io≤ 1.0A,Po≤ 15W Vi = 1 0 . 5 V t o 2 3 V Min Typ Max 7.7 8.0 8.3 Unit V 7.6 8.0 8.4 Vi = 1 0 . 5 V t o 2 5 V 5.0 160 Vi = 11 . 5 V t o 1 7 V 2.0 80 Io=5.0mA to 1.5A 10 160 Io=250mA to 750mA 5.0 80 5.0 8.0 Io=5.0mA to 1.0A 0.05 0.5 Vi = 1 0 . 5 V t o 2 5 V 0.5 1.0 mV TJ=+25°C mV TJ=+25°C TJ=+25°C mA mA Δ Vo / Δ T I o = 5 . 0 m A O u t p u t N o i s e Vo l t a g e VN f = 1 0 H z t o 1 0 0 K H z , T A = + 2 5 °C Ripple Rejection RR f=120Hz D r o p o u t Vo l t a g e VDrop Vi = 11 . 5 V t o 2 1 . 5 V Io=1A, TJ=+25°C 56 -0. 8 mV/°C 52 µ V/Vo 73 dB 2 V Short Circuit Current ISC Vi = 3 5 V, T A = + 2 5 ° C 230 mA Peak Current IPK TJ=+25°C 2.2 A *Loa d an d line reg u la tion are spec ifie d a t c o nstan t ju nc tion te mpe ra tu re . Cha nge s in Vo due to he a ting e ffe c ts must b e tak en in to a cc oun t sepa ra tel y. P u lse testing with lo w du ty is u sed . Page5 www.belling.com.cn V1.0 BL78XX BL7809 ELECTRICAL CHARACTERISTICS (Re fe r to the test circu it, -2 0 °C ＜ T J ＜ 85 °C , Io=500 mA , Vi= 15V, C i=0.33µ F, Co=0 .1µ F, unless o the rwise spe cifie d Charac te ristics S ymb o l Test Co nd ition s 8.68 TJ=+25°C O u t p u t Vo l t a g e Line Regulation * Lo a d R e g u l a t i o n * Vo Regline Regload Quiescent Current IQ Quiescent Current Change Δ IQ O u t p u t Vo l t a g e D r i f t Min 5.0mA≤ Io≤ 1.0A,Po≤ 15W Vi = 11 . 5 V t o 2 6 V Typ Max 9.0 9.32 Unit V 8.55 9.0 9.45 Vi = 11 . 5 V t o 2 6 V 5.0 150 Vi = 1 2 . 5 V t o 1 8 V 2.0 80 Io=5.0mA to 1.5A 10 160 Io=250mA to 750mA 5.0 80 5.0 8.0 Io=5.0mA to 1.0A 0.05 0.5 Vi = 11 . 5 V t o 2 6 V 0.5 1.0 mV TJ=+25°C mV TJ=+25°C TJ=+25°C mA mA Δ Vo / Δ T I o = 5 . 0 m A O u t p u t N o i s e Vo l t a g e VN f = 1 0 H z t o 1 0 0 K H z , T A = + 2 5 °C Ripple Rejection RR f=120Hz D r o p o u t Vo l t a g e VDrop Vi = 11 . 5 V t o 2 1 . 5 V Io=1A, TJ=+25°C 56 -0. 8 mV/°C 52 µ V/Vo 73 dB 2 V Short Circuit Current ISC Vi = 3 5 V, T A = + 2 5 ° C 230 mA Peak Current IPK TJ=+25°C 2.2 A *Loa d an d line reg u la tion are spec ifie d a t c o nstan t ju nc tion te mpe ra tu re . Cha nge s in Vo due to he a ting e ffe c ts must b e tak en in to a cc oun t sepa ra tel y. P u lse testing with lo w du ty is u sed . Page6 www.belling.com.cn V1.0 BL78XX BL7812 ELECTRICAL CHARACTERISTICS (Re fe r to the te st c irc uit, -2 0 °C ＜ T J ＜ 85 °C, Io=50 0 mA , Vi=19V, C i=0.33µ F, Co=0. 1µ F, unless o the rwise spe cifie d Charac te ristics S ymb o l Test Co nd ition s TJ=+25°C O u t p u t Vo l t a g e Line Regulation * Lo a d R e g u l a t i o n * Vo Regline Regload Quiescent Current IQ Quiescent Current Change Δ IQ O u t p u t Vo l t a g e D r i f t 5.0mA≤ Io≤ 1.0A,Po≤ 15W Vi = 1 4 . 5 V t o 2 7 V Min Typ Max 11.5 12 12.5 Unit V 11.4 12 12.6 Vi = 1 4 . 5 V t o 3 0 V 10 240 Vi = 1 6 V t o 2 2 V 3.0 120 Io=5.0mA to 1.5A 11 240 Io=250mA to 750mA 5.0 120 TJ=+25°C 5.1 8.0 Io=5.0mA to 1.0A 0.1 0.5 Vi = 1 4 . 5 V t o 3 0 V 0.5 1.0 mV TJ=+25°C mV TJ=+25°C mA mA Δ Vo / Δ T I o = 5 . 0 m A O u t p u t N o i s e Vo l t a g e VN f = 1 0 H z t o 1 0 0 K H z , T A = + 2 5 °C Ripple Rejection RR f=120Hz D r o p o u t Vo l t a g e VDrop Vi = 1 5 V t o 2 5 V Io=1A, TJ=+25°C 55 -1 mV/°C 76 µ V/Vo 71 dB 2 V Short Circuit Current ISC Vi = 3 5 V, T A = + 2 5 ° C 230 mA Peak Current IPK TJ=+25°C 2.2 A *Loa d an d line reg u la tion are spec ifie d a t c o nstan t ju nc tion te mpe ra tu re . Cha nge s in Vo due to he a ting e ffe c ts must b e tak en in to a cc oun t sepa ra tel y. P u lse testing with lo w du ty is u sed . Page7 www.belling.com.cn V1.0 BL78XX BL7815 ELECTRICAL CHARACTERISTICS (Re fe r to the test circu it, -2 0 °C ＜ T J ＜ 85 °C , Io=500 mA , Vi= 23V, C i=0.33µ F, Co=0 .1µ F, unless o the rwise spe cifie d Charac te ristics S ymb o l Test Co nd ition s TJ=+25°C O u t p u t Vo l t a g e Line Regulation * Lo a d R e g u l a t i o n * Vo Regline Regload Quiescent Current IQ Quiescent Current Change Δ IQ O u t p u t Vo l t a g e D r i f t 5.0mA≤ Io≤ 1.0A,Po≤ 15W Vi = 1 7 . 5 V t o 3 0 V Min Typ Max 14.4 15 15.6 Unit V 14.2 5 15 15.7 5 Vi = 1 7 . 5 V t o 3 0 V 11 300 Vi = 2 0 V t o 2 6 V 3.0 150 Io=5.0mA to 1.5A 12 300 Io=250mA to 750mA 4.0 150 5.2 8.0 mV TJ=+25°C mV TJ=+25°C TJ=+25°C Io=5.0mA to 1.0A 0.5 Vi = 1 7 . 5 V t o 3 0 V 1.0 mA mA Δ Vo / Δ T I o = 5 . 0 m A O u t p u t N o i s e Vo l t a g e VN f = 1 0 H z t o 1 0 0 K H z , T A = + 2 5 °C Ripple Rejection RR f=120Hz D r o p o u t Vo l t a g e VDrop Vi = 1 8 . 5 V t o 2 8 . 5 V Io=1A, TJ=+25°C 54 -1 mV/°C 90 µ V/Vo 70 dB 2 V Short Circuit Current ISC Vi = 3 5 V, T A = + 2 5 ° C 250 mA Peak Current IPK TJ=+25°C 2.2 A *Loa d an d line reg u la tion are spec ifie d a t c o nstan t ju nc tion te mpe ra tu re . Cha nge s in Vo due to he a ting e ffe c ts must b e tak en in to a cc oun t sepa ra tel y. P u lse testing with lo w du ty is u sed . Page8 www.belling.com.cn V1.0 BL78XX APPLICATION CIRCUIT Note s: (1 ) To spec ify an ou tpu t vo ltag e. su bstitu te vo ltag e va lue fo r "XX. " A co mmo n gro und is requ ired be twe en th e in pu t and the Outpu t vo lta ge . Th e in put vo ltage must re ma in typ ic a lly 2.0V a bo ve the ou tp u t voltage e ven during the lo w p oin t on the inpu t ripp le vo ltage . (2 ) C i is re qu ired if re g ulator is loc a ted an ap p rec iab le d istanc e fro m power Su pp ly filter. (3 ) Co imp ro ve s stab ility an d tran sien t respon se. Page9 www.belling.com.cn V1.0 BL78XX Page10 www.belling.com.cn V1.0 BL78XX CHARACTERISTIC CURVES Page11 www.belling.com.cn V1.0 BL78XX OUTLINE DRAWING TO -22 0 Page12 Un it:mm www.belling.com.cn V1.0