NIU 7670 PRELIMINARY VOLTAGE TRIPLER BR GENERAL DESCRIPTION WM PACKAGE OUTLINE The NJU7670 is a voltage tripler incorporated CR os- cillator, voltage converter, reference voltage circuit and voltage regulator. {t can generates triple or double negative voltage of ~ an operating voltage ranging from -2.6V to -6V. Ee The application circuit of tripler requires three capacitors, and doubler requires only two capacitors. Furthermore, any kind of output voltage is available by the internal voltage regulator. NJU7670D NJUT670N Wi FEATURES WH PIN CONFIGURATION @ Triple / Double Voltage Output @ Operating Voltage - -2.6V ~ -6.0V @ High-efficiency Voltage Conversion Rate 7, - 95% ( lour=5mA ) cr Od Hz] v, @ High Output Current --- ( MAX 20mA,Vin=-5V ) cr Day Nc @ CR Oscillator ON-Chip co @ Stand-by Function By External Signal ty Piz] NC CON / OFF of Veee ) or Oe PID) Pon @ Package Outline DIP / DMP 14 ncLS pi] Rv @ C-W0S Techno! ogy ne(B] PS) Veen Vin CZ) rs] Vour @ BLOCK DIAGRAM Vo CR ' Osci I later oe Circuit Vin 1 t cr \ t00 Pow cl- Vol tage \ J C2 Converter | | Vol tage RV C2- i Regulator \ bp > View Lt I i Voltage 1 Your Regulation i Tripler I Circuit ! Circuit New Japan Radio Co, Lid. 4-27| NJIU767O MH TERMINAL DESCRIPTION NO. SYMBOL FUNCTION 1 Ci* Charge Pump Capacitor 1(+} Connecting Terminal 2 C1" Charge Pump Capacitor 1(-) Connecting Terminal 3 C2* Charge Pump Capacitor 2(+) Connecting Terminal 4 C27 Charge Pump Capacitor 2(-) Connecting Terminal 5 NC Non Connection 6 NC Non Connection 7 Vix Power Supply Terminal (-) 8 Vout Voltage Output Terminal 9 Vees Voltage Regulator Qutput Terminal 10 RV Voltage Regulator Adjustment Terminal 11 Poff V-eg Output Control Terminal 12 NC Non Connection 13 NC Non Connection 14 Vop Power_Supply Terminal (+) ME FUNCTIONAL DESCRIPTION (1) Voltage Converter The voltage converter generates double or triple voltage against Vin. Vop=0V Vin=-5V _ Vout=3Vin=-15V (2) Voltage Reference Circuit The voltage reference circuit is generating the reference voltage for a voltage regulator. (3-1) Voltage Regulator The voltage regulator output stablized voltage which regulated by using the external resistor against double or triple voltage of the input voltage. As this circuit incorporated output-off function, the voltage regulator output (ON/OFF) is performed by the signal come from system. Voo Pow Control Terminal Vol tage Regulator RV Rav = 100kQ~1MQ Vees 4-28 ew fapan Radio Co, Ld.(3-2) ON / OFF Control for V-oc Terminal NJIU76G7O0O Vreg Output ort Level ON "H ( Connect to Voo ) OFF "L ( Connect to Ves ) (3-3) Example of the Voltage Regulation The voltage regulator has a output terminal which can be adjusted the output voltage to any kind of voltage by resistance Rav. As the RV terminal imput impedace is high. Therefore special care against noise is required. (Use a sealed line or others noise-proof method) Tripler Operation + Voltage Regulator Operation sy CT + 1jcit vi 4 ~ - tom EE} nc [13] Ro & 100k~1MQ tour + + 1 - i) cz waver Par LiL} G NC RV [10 ' [Enc Veer |-5-}Sealed Line oO TT Vin Vout ps }-4+_-O Vren= 8V Vin= SV Vour= ~ 18V = Rey, +Hn H C3 10uF New Japan Radio Co. Lid. ___A.29NJU7 670 ABSOLUTE MAXIMUM RATINGS ( Ta=25 ) PARAMETER SYMBOL RATINGS UNIT Supply Vol tage Viw IVon - Vour |S 20 V Via Vin - 0.5~0.5 (Note 1) Input Voltage V Vie Vour - 0.5~0.5 (Note 2) Output Voltage Vout - 20.0 V Power Dissipation Pp 700 f DIP } mi 300 ( DMP Operating Temperature Range | Tor: -20~ + 75 c Storage Temperature Range Tots ~ 65 ~ +150 c (Note 1) Apply to Porr terminal. (Note 2) Apply to RV terminal. Mi ELECTRICAL CHARACTERISTIC ( Vov=0V, Vin=-5V, Ta=25C ) PARAMETER SYMBOL CONDITIONS MIN TYP MAX [UNIT Supply Vol tage Vin ~6.0 - 2.6 | V Vour -18.0 - - V Output Vol tage Veew | RL=00, ReveIMQ, Vour=-18V[-18.0 | - | -2.6 | V Regulator Vour -18.0 - 8.0 | V Operating Vol tage Vol tage Conye erter lopri RL=0o, Rev=1NQ - 60 100 J aA urrent Yonsumpt ion Regulator lopr2 RL=00, Rev=iMQ, Vour=-15V] - 5.0 12.0 | uA Current Consumption Output Impedance Rout lour=10mA - 150 200 Q Power Conversion Rate Pere lour= 5mA 90 95 - % . . AV res ~18V<Vour<-8V Line Regulation AVourVeee | Vere=8V, RLz00 - 0.2 - KV . AVe eg Vour=15V, Vreg=-B8V Load Conversion Ales 0<1.0.<10mA - 5.0 - 2 Output Satupation nce Rsat Reap=A Ws gagVoug iA Alves - 8.0 - Q Reference Vol tage Vav 2.3 | -1.5 | -1.0 | V Input Current 1 bina RV Terminal - - 1.0 | uA Input Current 2 bine Poff Terminal - - 2.0 | wA 4-30 New Japan Radio Co,Ltd.NUU7670 i APPLICATION CIRCUITS (1) (1-1) Tripler Operation sv Lay, louF C1 Lyct Viv [74 }-+ - ci nc {TS} + . 04F C2 as un = SCF ~ 4 }c2 Pore Pit} [3 nc RV [10 [eq ne Vree | 2] O___7] v Vour LS Oo Vin=5V is out LSS Vou =18V ty HW C3 10uF (1-2) Doubler Operation 5V Lt \ ) Cy ci- nC TUS] +3] co l0uF C2 ie C2 nc iz) 7 Te] cz harerd Por [IL}- [Sjnc av [io} Cenc Vree |3 J y TH Vin Vour [84 Oo we$ Vour= 10V tH H C3 10eF New Japan Radio Co,Ld. 4.3]WH APPLICATION CIRCUIT (2) NJIU767O (2) Parallel Connection wl YT) ue a cr Vo me 4 cl wy) Voo a RI - cr nc {0 - cr nc [a] aon + C2 nef * C2" ne RT T 10eF cz co; AMEE OB, ss $e co 5 oo} I leF Nc RV 104F gad RV PIGAARRR Vee (5 CEINC Vree [5 Setled Line o Vout Vin Vour O Vee = 10V [a po Vour= 15V + C3 re * The output impedance Rout can be redused by parallel connection. C3 is a stabilizing capacitor output for stabilized voltage. * In the parallel connection, one stabilizing capacitor using is better way. 4-32 ___ New Japan Radio Co,Ltd.