M51998P RENESAS | Alldatasheet
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Regarding the change of names mentioned in the document, such as Mitsubishi Electric and Mitsubishi XX, to Renesas Technology Corp. The semiconductor operations of Hitachi and Mitsubishi Electric were transferred to Renesas Technology Corporation on April 1st 2003. These operations include microcomputer, logic, analog and discrete devices, and memory chips other than DRAMs (flash memory, SRAMs etc.) Accordingly, although Mitsubishi Electric, Mitsubishi Electric Corporation, Mitsubishi Semiconductors, and other Mitsubishi brand names are mentioned in the document, these names have in fact all been changed to Renesas Technology Corp. Thank you for your understanding. Except for our corporate trademark, logo and corporate statement, no changes whatsoever have been made to the contents of the document, and these changes do not constitute any alteration to the contents of the document itself. Note : Mitsubishi Electric will continue the business operations of high frequency & optical devices and power devices. Renesas Technology Corp. Customer Support Dept. April 1, 2003 7tENESAS Renesas Technology Corp.
MITSUBISHI<Standard Linear ICs> Switching Regulator Control Description. PIN CONFIGURATION(TOP VIEW) M51998 is a primary side switching regulator control IC suitable for converting AC power supply to stabilized DC voltage. Collector i) [19] Vec Basic functions provided are from M51995A and limited to the Vout [2] = [9] CLM indispensable. This device is housed in 10pin SOP, 14pin DIP. Emitter [al B Ta] GND Features. ovp [a| a [7] cT “Toerece cura Outline 10P2N-A Start-up threshold 16V .Stop voltage 10V Collector Vee *Pulse-by-pulse current limit NC [al = hl NC. #10 pin SOP,14 pin DIP package Emitt = a ovp [5] a [1] CT Application F/B [el Lol rt Flyback regulator ne. [7 [a] Nc. Outline 14P4 BLOCK DIAGRAM Vee F/B oleic: © elaine ° sienna ' I t \\ t : ! ; C) Collector I Ll I l e | l [ l l | osc | C) Emitter if ' I Be SH pm SOS SLIe eas Sears sae) oe RT CT CLM GND Aug.17, 2000 7tENESAS (14)
MITSUBISHI<Standard Linear ICs> Switching Regulator Control ABSOLUTE MAXIMUM RATINGS(Ta=25°C, unless otherwise noted.) | vec | Supplyvotage PT | Ve | Collectorterminalvotage [TT | Pek et fe [owewen | eae} ClMTeminalvotage [SSCS [ove —[ovPreminalvotage [SSCS SCY AY [Ves | FBteminalvotage ——[SSSCSC~d mt id [Pa | Power dssipaton [SCS _ | [Ki | Theraml erating rato [SSCS Sm ELECTRICAL CHARACTERISTICS(Ta=25°C, Vec=5V, unless otherwise noted.) § | symbot Parameter Test conditions Unit | Vesta] Operation startvotage [15.2 | 162 | 172 | v | | VecistoP) | Operation stopvoitage | sf 8.0 | 89 | 109 | Vv | Dvec-veasTannvensron| 60 | 63 | 76 | V_| Voo=14.5V, Ta=25°C Start-up current a spawn __[Weestasv-20<T=<@5°6 {40 [100 [200 [=A Wee=30V [s | 12 | 21 | ma | Icc ove | Circuit current in OVP state Voo=25V Veo=9.6V [ remind | Currentato% duty [2.40 | 1.54 | 1.00 | ma | F |[eemaxo_| Current at maximum auy || -0.90 | -0.56 | -0.40_| mA | 7 Dire=Ireuino-Irewaxo | -1.35 | -0.99 | -0.70 | ma_| | vre | FiBterminalvotage [| 4 | 59 | 71 |v [pre | F/B terminal resistance |__| 420 600 | 7e0 | a | [LViioven [OVP term. Htwresholdvok |__| 40] 750 | 960 | my 7 OvP term. hysterisis vott_| avrHove-vtHovenvruover | - | 30 | - | my | | timove | ove term inputcurent [80 t50 [250 | OA | Aug.17, 2000 2tENESAS (2/4)
MITSUBISHI<Standard Linear ICs> Switching Regulator Control 8 Symbol Parameter Test conditions [in [| Typ. | Max. | Gem [75 | 90 | 10 |v | © | Vec(sToP) | Operation stop volt. V_ | -vecovpc | -OVP reset supply voltage 0.55 | 1.20 v P i Current from OVP termnal VPt TH _| fo OE reset © [vinci |OlMienimartiestod vor [| 180 | 200 | 220 | mv L [iow | —CUMterminalcurent [| -2a0 | -200 | 140 | oA] M | Trocim [Delay time fom GiMiovew [it - | 90 |. | as | [75 [2 | wiz - — RT=27k0,CT=470pF | -©8_| ate Lowerlimitvottof OSC waveform | | 4.76 | 1.96 | 246 | Vv | [avosc | Upperiowertimtvokaitrence | +f 211 | 24t{ 271 | v_| RIDA Vec=18V,lo=1oma | - | 0.04 | o4 | V_ | Vee=18V, lo=t00mA] - | o7 | 14 | v_| Output low volt eNO Voo=5v,lo=ima | - | o85 | 10 | vy | Veo=sv.to=100ma | - | 13 [| 20 | v | Gunananwonage MeE=tBV,lo=10ma | 160[ 167 | - |v ONO _Neo= tv, to=-100mal 15.5 | 165 [= | v_ | [tase | Oupatvetagersetme [| | 0 | = | as | Outputvoltagefalltime [Ts Ts | Aug.17, 2000 7tENESAS (3/4)
MITSUBISHI<Standard Linear ICs> Switching Regulator Control if bs CT e os F= O O O oar O Q ane ot-O [e} =) faa} I . 5 % 3s O oe 2 S § = foe)
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