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Manuel d’utilisation Ricoh RH5RH1A, RH5RH12B, RH5RH13B

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  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 1

    ELECTRONIC DEVICES DIVISION PWM STEP-UP DC/DC CONVERTER RH5RH ×× 1A/ ×× 2B/ ×× 3B SERIES APPLICA TION MANUAL NO.EA-023-9803 ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 2

    NO TICE 1. The products and the product specifications described in this application manual are subject to change or dis- continuation of production without notice for reasons such as improvement. Therefore, before deciding to use the products, please refer to Ricoh sales representatives for the latest information thereon. 2. This application manua ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 3

    OUTLINE ...................................................................................................... 1 FEA TURES .................................................................................................... 1 APPLICA TIONS ............................................................................................. 1 BLOCK DIA GRAM ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 4

    TYPICAL APPLICA TIONS ............................................................................ 23 • RH5RH × × 1A ................................................................................................. 23 • RH5RH × × 2B .................................................................................................. 23 • RH5 ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 5

    PWM STEP-UP DC/DC CONVER TER 1 RH5RH × × 1A/ × × 2B/ × × 3B SERIES OUTLINE The RH5RH ×× 1A/ × × 2B/ × × 3B Series are PWM Step-up DC/DC converter ICs by CMOS process. The RH5RH × × 1A IC consists of an oscillator, a PWM control circuit, a driver transistor (Lx switch), a refer- ence voltage unit, an error amplifier, a phase compensati ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 6

    2 RH5RH × × × × – × × ← Part Number ↑ ↑ ↑ a b c SELECTION GUIDE In RH5RH Series, the output voltage, the driver, and the taping type for the ICs can be selected at the user's request. The selection can be made by designating the part number as shown below : For example, the product with Output Voltage 5.0V, the External Driver ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 7

    3 • SOT-89-5 PIN CONFIGURA TION • SOT-89 PIN DESCRIPTION Pin No. × × 1B × × 2B × × 3B 1 1 5 2 2 2 3 — 4 — 3 3 — — 1 1 2 3 (mark side) 1 2 3 (mark side) 5 4 R H5RH Symbol Description V SS Ground Pin OUT Step-up Output Pin, Power Supply (for device itself) Lx Switching Pin (Nch Open Drain) EXT External Tr. Drive Pin (CMOS Output) CE ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 8

    4 R H5RH ABSOLUTE MAXIMUM RA TINGS Symbol Item V OUT Output Pin Voltage V LX Lx Pin Voltage V EXT EXT Pin Voltage V CE CE Pin Voltage I LX Lx Pin Output Current I EXT EXT Pin Current P D Power Dissipation Topt Operating Temperature Range Tstg Storage Temperature Range Tsolder Lead Temperature(Soldering) Rating Unit Note +12 V +12 V Note1 – 0.3 to ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 9

    5 ELECTRICAL CHARA CTERISTICS • RH5RH301A Symbol Item V OUT Output Voltage V IN Input Voltage Vstart Start-up Voltage Vhold Hold-on Voltage I DD 1 S upply Current 1 I DD 2 S upply Current 2 I LX Lx Switching Current I LX leak Lx Leakage Current fosc Oscillator Frequency Maxdty Oscillator Maximum Duty Cycle η Efficiency t start Soft-Start Time V ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 10

    6 R H5RH • RH5RH501A V OUT =5.0V Unless otherwise provided, V IN =3V, Vss=0V, I OUT =10mA, Topt=25˚C, and use External Circuit of Typical Application (FIG. 1). (Note 1) Soft-Start Circuit is operated in the following sequence : (1) V IN is applied. (2) The voltage (Vref) of the reference voltage unit is maintained at 0V for about 200µs after th ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 11

    7 R H5RH • RH5RH302B Symbol Item V OUT Output Voltage V IN Input Voltage Vstart Oscillator Start-up Voltage I DD 1 Supply Current 1 I DD 2 Supply Current 2 I EXTH EXT “H” Output Current I EXTL EXT “L” Output Current fosc Oscillator Frequency Maxdty Oscillator Maximum Duty Cycle t start Soft-Start Time Conditions MIN. TYP. MAX. Unit Note 2 ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 12

    8 • RH5RH303B Symbol Item V OUT Output Voltage V IN Input Voltage Vstart Start-up Voltage Vhold Hold-on Voltage η Efficiency I DD 1 S upply Current 1 I DD 2 S upply Current 2 I LX Lx Switching Current I LX leak Lx Leakage Current I EXTH EXT “H” Output Current I EXTL EXT “L” Output Current V CEH 1 CE “H” Level 1 V CEL 1 CE “L ” Le ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 13

    9 • RH5RH503B V OUT =5.0V R H5RH Unless otherwise provided, V IN =3V, V SS =0V, I OUT =10mA, Topt=25˚C, and use External Circuit of Typical Application (FIG. 3). (Note 1) Soft-Start Circuit is operated in the following sequence : (1) V IN is applied. (2) The voltage (Vref) of the reference voltage unit is maintained at 0V for about 200µs after ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 14

    10 OPERA TION OF STEP-UP DC/DC CONVER TER Step-up DC/DC Converter charges energy in the inductor when Lx Transistor (LxTr) is on, and discharges the energy with the addition of the energy from Input Power Source thereto, so that a higher output voltage than the input voltage is obtained. The operation will be explained with reference to the followi ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 15

    11 R H5RH When the output current (I OUT ) is relatively small, topen<toff as illustrated in the above diagram. In this case, the energy charged in the inductor during the time period of ton is discharged in its entirely during the time peri - od of toff, so that ILmin becomes zero (ILmin=0). When I OUT is gradually increased, topen eventually b ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 16

    12 R H5RH Therefore it is necessary that the setting of the input/output conditions and the selection of peripheral compo - nents should be made with ILmax taken into consideration. • Output Current in Continuous Conduction Mode When the operation enters into the continuous conduction mode by increasing the I OUT , ILmin becomes equal to Iconst ( ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 17

    13 R H5RH TYPICAL CHARA CTERISTICS 1) Output Voltage vs. Output Current RH5RH301A L=120µH V IN =1.0V 1.5V 2.0V 0 20 40 60 3.1 3.0 2.9 2.8 2.7 2.6 2.5 Output Current I OUT (mA) Output Voltage V OUT (V) L = 270µH 1.5V 3.1 3.0 2.9 2.8 2.7 2.6 2.5 Output Current I OUT (mA) Output Voltage V OUT (V) 0 10 20 30 40 50 60 V IN =1.0V 2.0V RH5RH501A L=120µ ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 18

    14 R H5RH 2) Efficiency vs. Output Current RH5RH301A L=120µH V IN =1.0V 1.5V 2.0V 0 10 20 30 90 80 70 60 50 40 Output Current I OUT (mA) Efficiency η (%) L=270µH 1.5V 2.0V 0 10 20 30 40 90 100 80 70 60 50 40 Output Current I OUT (mA) Efficiency η (%) V IN =1.0V RH5RH501A L=120µH V IN =1.0V 3.0V 4.0V 0 50 100 150 90 100 80 70 60 50 40 Output Cu ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 19

    15 R H5RH 3) Supply Curret (No Load) vs. Input Voltage 4) Output Current vs.Ripple Voltage RH5RH301A L=120µH 1.0 1.2 1.4 1.6 1.8 2.0 50 60 70 40 30 20 10 0 Input Voltage V IN (V) Supply Current I IN (µA) L=270µH 1.0 1.2 1.4 1.6 1.8 2.0 50 60 70 40 30 20 10 0 Input Voltage V IN (V) Supply Current I IN (µA) RH5RH501A L=120µH 1 2 3 4 200 150 100 ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 20

    16 5) Start-up/Hold-on Voltage vs. Output Current (Topt=25˚C) R H5RH RH5RH301A L=270µH 1 10 20 30 40 50 60 70 80 50 60 70 40 30 20 10 0 Output Current I OUT (mA) Ripple Voltage Vr (mV p-p) 2.0V 3.0V V IN =0.9V L=270µH 1 10 90 20 30 40 50 60 70 80 50 60 70 80 40 30 20 10 0 Output Current I OUT (mA) Ripple Voltage Vr (mV p-p) 2.0V 3.0V 4.0V V IN = ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 21

    17 R H5RH 6) Output Voltage vs.Temperature RH5RH302B L=28µH 0 20 40 60 80 100 1.0 1.2 1.4 0.8 0.6 0.4 0.2 0 Output Current I OUT (mA) Start-up/Hold-on Voltage Vstart/Vhold (V) Vstart Vhold L=28µH 1.0 1.2 1.4 0.8 0.6 0.4 0.2 0 0 20 40 60 80 100 Output Current I OUT (mA) Start-up/Hold-on Voltage Vstart/Vhold (V) Vstart Vhold RH5RH301A I OUT =10mA V ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 22

    18 R H5RH 9) Supply Current 1 vs.Temperature RH5RH501A 0.8 1.0 1.2 0.6 0.4 0.2 0 – 20 –40 0 20 40 60 80 T emperature T opt (˚C) Start-up Voltage Vstart(V) –40 – 20 0 20 40 60 80 T emperature T opt (˚C) 0.8 1.0 0.6 0.4 0.2 0 Hold-on Voltage Vhold(V) RH5RH501A –40 –20 0 20 40 60 80 T emperature T opt (˚C) 80 100 60 40 20 0 Supply Curre ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 23

    19 R H5RH 13) Oscillator Frequency vs. Temperature 14) Oscillator Duty Cycle vs. Temperature RH5RH301A I OUT =10mA V IN =2V L=120µH Oscillator Frequency fosc(kHz) 50 60 70 80 90 100 40 30 20 10 0 –20 0 20 40 60 80 100 –40 Temperature Topt(˚C) I OUT =10mA V IN =3V L=120µH –40 –20 0 20 40 60 80 100 T emperature T opt (˚C) Oscillator Frequ ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 24

    20 R H5RH 15) V LX Voltage Limit vs. Temperature RH5RH302B I OUT =10mA V IN =2V L=28µH –40 –20 0 20 40 60 80 T emperature T opt (˚C) Oscillator Duty Cycle Maxdty(%) 70 80 90 100 60 50 I OUT =10mA V IN =3V L=28µH –40 –20 0 20 40 60 80 T emperature T opt (˚C) Oscillator Duty Cycle Maxdty(%) 70 80 90 100 60 50 RH5RH501A –40 –20 0 20 40 ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 25

    21 R H5RH 18) Load Transient Response RH5RH301A I OUT =1mA-30mA V IN =2V L=120µH 0 20 40 60 80 Time t(ms) 3.0 3.5 4.0 4.5 5.0 2.5 2.0 1.5 1.0 Output Voltage V OUT (V) 150 180 210 240 120 90 60 30 0 Output Current I OUT (mA) Output Voltage Output Voltage Output Current I OUT =1mA-30mA V IN =3V L=120µH 0 20 40 60 80 Time t(ms) 5.0 5.5 6.0 6.5 7.0 4 ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 26

    22 R H5RH 19) Distribution of Output Voltage 0 5 10 15 20 25 30 35 Distribution (%) Output Voltage V OUT (V) 5.18~5.20 5.16~5.18 5.14~5.16 5.12~5.14 5.10~5.12 5.08~5.10 5.06~5.08 5.04~5.06 5.02~5.04 5.00~5.02 4.98~5.00 4.96~4.98 4.94~4.96 4.92~4.94 4.90~4.92 4.88~4.90 4.86~4.88 4.84~4.86 4.82~4.84 4.80~4.82 RH5RH501A 20) Distribution of Oscillator ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 27

    23 R H5RH TYPICAL APPLICA TIONS V IN Inductor Diode Lx OUT Vss V OUT + Capacitor Components Inductor (L) : 120µH (Sumida Electric Co., Ltd.) Diode (D) : MA721 (Matsushita Electronics Corporation, Schottky Type) Capacitor (C L ) : 22µF (Tantalum Type) FIG. 1 V IN Inductor Diode OUT Vss V OUT + Capacitor Cb Rb Tr EXT Components Inductor (L) : 28µH ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 28

    24 R H5RH V IN Inductor Diode Lx OUT Vss V OUT + Capacitor EXT CE NC Components Inductor (L) : 120µH (Sumida Electric Co., Ltd.) Diode (D) : MA721 (Matsushita Electronics Corporation, Schottky Type) Capacitor (C L ) : 22µF (Tantalum Type) FIG. 3 V IN Inductor Diode Lx OUT Vss V OUT + Capacitor Cb Rb Tr EXT CE NC Components Inductor (L) : 28µH (T ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 29

    25 V IN Inductor Diode Lx OUT Vss V OUT + Capacitor EXT CE NC RH5RH ×× 3B Pull-up resistor Tr CE R H5RH • CE pin Drive Circuit FIG. 5 ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 30

    26 V IN Inductor Diode OUT Vss V OUT + Capacitor EXT ZD:6.8V RH5RH502B Tr Cb R ZD Rb Starter Circuit (Note) When the Output Current is small or the Output Voltage is unstable,use the Rzd for flowing the bias current through the Zener diode ZD. FIG. 6 V IN Inductor Diode OUT Vss V OUT + Capacitor RH5RH ×× 1A Tr PNP Lx Rb1 Rb2 Starter Circuit (Note ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 31

    27 V IN Trance1:1 Diode OUT Vss V OUT + Capacitor Lx RH5RH ×× 1A Starter Circuit (Note) Use a RH5RH × × 2B,depend on the Output Current. FIG. 8 ZD ST R ST Tr V OUT side V OUT side V IN side V IN side Starter Circuit Starter Circuit ZDst 2.5V ≤ /ZDst ≤ Designation of Output Voltage Rst Input Bias Current of ZDst and Tr. (several k Ω to sev ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 32

    28 P A CKA GE DIMENSIONS (Unit: mm) T APING SPECIFICA TIONS (Unit: mm) • SOT-89 • SOT-89-5 • SOT-89 • SOT-89-5 R H5RH 4.5±0.1 0.4±0.1 0.4±0.1 1.5±0.1 1.6±0.2 1.5±0.1 ±0. 1 ±0. 1 ±0.1 1.5±0.1 2.5±0.1 0.4 MIN. 4.25MAX. 0.8 ø1.0 1 2 3 0.4 2 0. 4 7 0. 4 2 4.5 ± 0.1 1.5 ± 0.1 0.4 ± 0.1 0.4 ± 0.1 1.6 ± 0.2 1.5 ± 0.1 1.5 ± 0.1 ? ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 33

    29 R H5RH When using these ICs, be sure to take care of the following points : • Set external components as close as possible to the IC and minimize the connection between the components and the IC. In particular, when an external component is connected to OUT Pin, make minimum connection with the capacitor. • Make sufficient grounding. A large ...

  • Ricoh RH5RH1A, RH5RH12B, RH5RH13B - page 34

    RICOH COMPANY, LTD. ELECTRONIC DEVICES DIVISION HEADQUARTERS 13-1, Himemuro-cho, Ikeda City, Osaka 563-8501, JAPAN Phone 81-727-53-1111 Fax 81-727-53-6011 YOKOHAMA OFFICE (International Sales) 3-2-3, Shin-Yokohama, Kohoku-ku, Yokohama City, Kanagawa 222-8530, JAPAN Phone 81-45-477-1697 Fax 81-45-477-1694·1695 http://www.ricoh.co.jp/LSI/english/ RI ...

Fabricant Ricoh Catégorie Power Supply

Les documents que nous recevons du fabricant de l'appareilRicoh RH5RH1A, RH5RH12B, RH5RH13B peuvent être divisés en plusieurs groupes. Ceux-ci sont, entre autres:
- dessins techniques Ricoh
- manuels d’utilisations RH5RH1A, RH5RH12B, RH5RH13B
- fiches produit Ricoh
- dépliants
- ou étiquettes-énergie Ricoh RH5RH1A, RH5RH12B, RH5RH13B
Tous sont importants, mais les informations les plus importantes du point de vue de l'utilisation de l'appareil se trouvent dans le manuel d’utilisation Ricoh RH5RH1A, RH5RH12B, RH5RH13B.

Un groupe de documents appelé manuels d’utilisation est également divisé en types plus spécifiques, tels que: Manuels d’installation Ricoh RH5RH1A, RH5RH12B, RH5RH13B, manuels d’entretien, brefs manuels ou manuels de l’utilisateur Ricoh RH5RH1A, RH5RH12B, RH5RH13B. Selon vos besoins, vous devriez chercher le document dont vous avez besoin. Sur notre site, vous pouvez voir le manuel le plus populaire d’utilisation du produit Ricoh RH5RH1A, RH5RH12B, RH5RH13B.

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Manuel d’utilisation complet de l’appareil Ricoh RH5RH1A, RH5RH12B, RH5RH13B, quelle devrait-elle être?
Le manuel d’utilisation, également appelé le mode d’emploi, ou tout simplement le manuel, est un document technique destiné à aider à utiliser Ricoh RH5RH1A, RH5RH12B, RH5RH13B par les utilisateurs. Des manuels sont généralement écrits par un rédacteur technique, mais dans un langage accessible à tous les utilisateurs Ricoh RH5RH1A, RH5RH12B, RH5RH13B.

Le manuel d’utilisation complet Ricoh, devrait inclure plusieurs éléments de base. Certains d'entre eux sont moins importants, tels que: la couverture / page de titre ou pages d'auteur. Cependant, la partie restante, devrait nous fournir des informations importantes du point de vue de l'utilisateur.

1. Introduction et des conseils sur la façon d'utiliser le manuel Ricoh RH5RH1A, RH5RH12B, RH5RH13B - Au début de chaque manuel, nous devrions trouver des indices sur la façon d'utiliser le document. Il doit contenir des informations sur l'emplacement de la table des matières Ricoh RH5RH1A, RH5RH12B, RH5RH13B, FAQ ou des problèmes les plus fréquents - les points qui sont les plus souvent recherchés par les utilisateurs de chaque manuel
2. Table des matières - index de tous les conseils pour lRicoh RH5RH1A, RH5RH12B, RH5RH13B qui peuvent être trouvés dans le document courant
3. Conseils sur la façon d'utiliser les fonctions de base de l’appareil Ricoh RH5RH1A, RH5RH12B, RH5RH13B - qui devraient nous aider dans les premières étapes lors de l'utilisation Ricoh RH5RH1A, RH5RH12B, RH5RH13B
4. Troubleshooting - séquence systématique des activités qui nous aideront à diagnostiquer et ensuite résoudre les principaux problèmes de Ricoh RH5RH1A, RH5RH12B, RH5RH13B
5. FAQ - questions fréquemment posées
6. Détails du contact Informations sur l'endroit où chercher le contact avec le fabricant / service Ricoh RH5RH1A, RH5RH12B, RH5RH13B dans un pays donné, si le problème ne peut être résolu par nous-mêmes.

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