| Ordering number: EN3892B __| Monolithic Linear IC L88R05 Series 5 V, 1 A Voltage-regulator ICs with Reset Function Overview Package Dimensions The L88R05 Series is a series of low-saturation voltage unit : mm regulator ICs that are equipped with a function that generates a = 33.9 79-T0220-5H reset signal when the power supply for a microcontroller system is turned on or off. (L88R05 Series] Applications * Prevents malfunction when the microcontroller power supply is turned on or off. Designed to handle malfunction caused by momentary power interruptions. oO * Suited for portable electronic equipment, mobile electronic 0.8 att one equipment, and other battery-powered equipment with little 0.9 7) on capacity to handle fluctuation in input voltage; also suited for equipment with large fluctuations in the primary power 0-8 lls supply, J | roe | tf nizh-7i7 r +5. Functions SANYO : TO220-5H * Power supply reset generation function; the reset threshold voltages are ranked. L88RO5C: Vp7 = 4.5 V L88RO5D: Vpy = 4.2 V L88ROSE: Ver = 3.9 V * 5 V, 1 A output characteristics Features * Minimum I/O voltage difference is small (0.5 V typ.), making power conservation possible, and makes smaller heatsink and transformers possible. External capacitor for reset signal output delay time adjustment. Sink/source reset output provides compatibility with logic circuitry that has an internal pull-down resistor. Active pull-up facilitates noise suppression. Various types of protective circuits on chip (fold back current limiting, thermal protection), The package is the 7O220-SH; this package facilitates designs for the radiation of heat during the mounting process. SANYO Electric Co.,Ltd. Semiconductor Business Headquarters TOKYO OFFICE Tokyo Bldg.,1-10,1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN O15S96HAMD/5272TS No.3892-1/6L88R05 Series Specifications Maximum Ratings at Ta = 25C Parameter Symbol Conditions Ratings Unit Maximum input voltage Vin max 18 Vv Reset pin voltage VRES max 18 V ' Ta = 25C, ind dent IC 1.7 Ww Allowable power dissipation Pd max spen - - S : Te = 50C, ideal radiation of heat 20 Ww Junction-to-ambiet thermal . resistance Oya a4 CN Junction-to-case thermal : resisitance : Oj-c 5 C/W Operating temperature Topr -40 to +85 C Storge temperature Tstg 55 to +150 C Operating Conditions at Ta = 25 C Parament Symbol Conditions Ratings Unit Input voltage VIN 5.6 to 17 Vv Output current . lout Oto 1 A Reset output source current loRH 0 to 200 pA Reset output sink current loRL Otoz2 mA Operating Characteristics at Tj = 25 C, Vi, = 8 V, Iovry = 1 A, Cour = 47 MA for specified circuits Parameter | Symbol | Condition | min | typ [| max | Unit [Power Supply] Output voltage Vout 4.85 5.0 | 5.15 Vv VpROP1 o5 | 10] V 1 Dropout voltage Vorop2 _|lour = 300 mA o25 | 050 | V Line regulation AVoLN 5.6V Vin S17 V 10 70 | mV Load regulation AVoLD 5mA lout 1A 50 150 mV Peak output current lop 1 1.8 A Output short-circuit current lose 0.3 1.2 A , ley lour = 9 2.1 4 mA Current drain lap aD 80 | mA Output noise voltage VNO 10Hz Sf = 100 kHz 70 yvims Output voltage temperature AVolATa | Tj =25 to 125 C 05 mVAC coefficient Ripple rejection ratio Rrej f=120Hz,6V SViy S17V 60 d6 [Reset] High-level reset output voltage Voruy lonpH = 200 UA, CD open - 4.83 | 4.98 | 5.13 Vv Low-level reset output voltage Vor lonL = 2 mA, CD grounded 100 | 200 | mV C-rank 43 4.5 4.7 Vv Reset threshold voltage Vat D-rank 4.0 42 4.4 Vv E-rank . 3.7 3.9 4.4 Vv Reset hysteresis voltage Viys 50 100 200 mv Output delay time ty Cd = 0.1 pF 7.5 10 | 12.5 ms Pin Assignments oO of 1.Vin 2.Cd o 3.GND Top view No.3892-2/6L88R05 Series Equivalent Circuit Block Diagram VIN Oo ipin 1.2V Reference voltage Starter circuit GNO a3pin Measurement Circuit + ; VouT Error O ifi ba amplifier { Spin Overcurrent 7 limiting Thermal = + protection 7, 7 \23-404 cd = 2.4v oO + epin __ - AES + 0 = 4pin ADOoB24 Vout 5 O L88R05 c AES + ee T 3 4 /o - Unit (capacitance: F) aco2z25 No.3892-3/6Sample Application Circuit VIN CIN + aaa - +1) Cd Notes: L88R05 Series ' L88R05 To Vpp of peripheral circuit td=100XCd (pF) [ms] Court 3304 1. Set Cour to be 47 uF or greater and select it according to the applications. 2. Use the capacitators for Coy and Cd with high-temperature stability. L88RO05Cs Reset Operation VOUT (v} RES Vv) Voo RES CPU Yss AcQga27 1 Unit (capacitance: F) A00Re6 No.3892-4/6Output voltage, Vg V Current drain, Iq - mA Cutput voltage, Vo - V Reset voltage, Vags V 6.94 6.0 Vo-lo L88R05 Series Vin=8V Ta=25C 5.9 4.0 3.0 / 2.0 [ y 1.0 [ 5.02 .00 4.98 4.96 4.92 4.90 4.88 4.86 =40 % 0.2 0.4 0.6 0.6 1.0 1.2 4 16 Output current, lo - A Vo - Ta la -lo -20. 6 zo) 40 Ambient temperature, Ta 60 C Bo 1.8 2.0 10 60 50 Vin=8V Ta=25C 40 ZL 30) Y 20 Y | | CT % 0.1 0.2 0.3 04 0.5 0.6 0.7 0.8 0.9 1.0 1.1 Output current, lo -A Vas Vo C-type Io=5mA Ta= 25C J il! 2 3 4 Output voltage, Vo - V Dropout voltage, Vprop V Current drain, la mA Cutput voltage, Vo V Reset voltage, Vages V Vo Vin 0.64~ Io=1A Ta=25C 0 2 4 60 50 6 6 10 Ig Vin 12 Input voltage, Vin V 4 #16) 16 [\ Ig=1A Ta=25C 40 4 NY 30 20 10 0.5 0.4 03 0.2 6 B 10 12 Input voltage, Viq Vprop ~ |p 14 16 -V 16 20 Viny=12V Ta=25C / | /) 0 01 0.2 0.3 04 0.5 0.6 O07 08 09 10 1) Output current, lg -A Vues Vo 6 wut - D-type Io=5mA 5|Ta=25C fle 3 2 | IT % 1 5 2 3 4 Output voltage, Vo V No.3892-5/6 20Le8R05 Series Ves - Vo Pd max - Ta 6 = 22-~__,, E-type | | Infinite heatsink Sillicon grease on heatsink - Ip=5mA x 20} 39 Necm mounting torque 5/Ta= 25C ba 271 > = 16 8a = 714C i - cL 16 & n > tit 5s * g aS 412 > 3 & 100 x 100 x 2 mm? Al plate 1 = a So = pt | [M 3 2 o 50 x 50 x 2 mm Al plate AN # = 6 SN cr a 6, [a 1 a . hd _| f G 2| No heatsink . o = 1.75 | fe J o So Qa 0 1 ? : 4 5 6 =z 40 -20 0 20 40 60 #8085 10 120 140 160 Output voltage, Vo V Ambient temprature, Ta - C lm No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disastar/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. . m@ Anyone purchasing any products described or contained herein for an above-mentioned use shall: @ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., Its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: @) Not impose any responsibility for any fault or negtigence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of thelr officers and employees jointly or severally. @ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANY believes information herein is accurate and reliable, bul no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of October, 1996. Specifications and information herein are subject to change without notice. No.3892-6/6