M5290P MITSUBISHI | Alldatasheet

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MITSUBISHI <Dig./Ana. INTERFACE> MS290P,FP +5SV TRACKING REGULATOR WITH RESET CIRCUIT DESCRIPTION ; PIN CONFIGURATION (TOP VIEW) M5290 is a semiconductor integrated circuit designed for voltage regulator which is dual tracking type (positive/ —Voo [6] Voc negative output voltage) with system reset circuit. BeSTOR EMITTER OUTPUT(+) Since the output voltage is fixed inside, User can omit the EMITTER OUTPUT -) COLLECTOR outside resistors, and this IC includes the system reset circuit ne fH alee for detecting the abnormal status of Power Supply. When oureur(—sy) ourpute sy) Power Supply of system is in abnormal status, this IC sends BALANCE cnence nour the system reset output (Low) to the MPU/CPU, so User can ansustment [6] REFERENCE INP make the system operate safely. DELAY CAPACITANCE [10] onorr ESET OUTPUT SND FEATURES 4 2] © Fixed output voltage Soest Vom 5V @ Internal system reset circuit (with hysteresis) -Vvee DO [i€} Veo detectable voltage ----s--ssssrisseeesssrtsseneeessteeed 2V COLLECTOR EMITTER OUTPUT(+) (deray time is variable by connecting capacity at 7pin EMITTER QUTPUT(-} cone (6pin for the FP)) ourun-on fa] & NC © Current limiting circuit, thermal protection circuit BALANCE 8 ourpurte sv) © Capable of ON/OFF control (10pin) ADJUSTMENT q REFERENCE INPUT © Very Low input-output voltage differential operation by DeLay capacitance [6] using transistor RESET OUTPUT [10] ON/OFF © Variable output voltage (with external resistors connected ne [8] [a] sno between terminals ) and GND and between positive NC.NO CONNECTION output terminals). Outline 16P2S-A APPLICATION Dual power supply for CD players and stereo set pre-/main- amplifiers FMITIER COLLECTOR outpuT DELAY BLOCK DIAGRAM OUTPUTI+) OUTPUTIH) NC (+50) CAPACTTANC foc Q | = | REFERENCE | i mE » ia 1 > Z RESET eel -O mt | AH EEHC Youre RENCE SRCUT) [OVERREAT 3 voutage paorecrion ono) = C4 ON/OFF ON/OFF JCONTROY \\ | O C) BALANCE ml ADJUSTMENT UiMiTeR 1 Veo enter coulgctor = Ne suTpur OUTPUP(-) OUTPUT) (-3v) Oe ae ' 740 ELECTRIC .

MITSUBISHI <Dig./Ana. INTERFACE> MS290P,FP +5V TRACKING REGULATOR WITH RESET CIRCUIT ABUSOLUTE MAXIMUM RATINGS (1a=25°, unless othenwse noted) | tox amientersne P| A ELECTRICAL CHARACTERISTICS (1a=25C. Voo= +8V, 1L= +10mA, unless otherwise noted) REGULATOR PART Vo lovoutveinge as a ses | [ REG-o | tossravotaas wean | om 0-aoma a0 | 00 mw | RESET PART ee wre TBS . 141

MITSUBISHI <Dig./Ana. INTERFACE> MS290P,FP +SV TRACKING REGULATOR WITH RESET CIRCUIT APPLICATION EXAMPLE 1. Standard application example (1k =+30mA) Crer Connection of this capacitor gives the following charac- teristics.

1 The rise time of the output voltage can be adjusted

tee (slowed). 2. The ripple rejection ratio is improved. fe 3 Output noise voltage is reduced down to 1/10 of three 47 nF oz [tar terminal regulator IC. + ftH—o © ) + 2200pF 47 nF = fi} fo} fo] “Heo EMITTER COWECTOR NC tvo REFN. ON/OFF GND COLLECTOR EMITTER DELAY RESET Vee OUT(-} OUT NC =Vo BALANCE c OUT a LJ Ls] [3] TO BE CONNECTED TO A MICROCOMPUTER + OR OTHER RESET TERMINAL 47 nF J cg 10k 9 F a7 pF oe ti The output is cut off when 10pin is con- + . i nected to the GND terminal. Vee NOTE: Ensure that the capacitance of the employed capacitor does not significantly vary with the temperature. 2. Very Low input-out voltage differential operation Stable operations are expected even if the input-output +Vec voltage. Differences are quite low as 0.2V. 4 ler + H 47 pF Ly NP 2200f ’ a pr [e]__fs]_ [vs] [i] fol [a] AVee ene COL EGTOR NC +Vo REF IN ON/OFF GNO COLLECTOR EMITTER DELAY = RESET. =Vee OUT(-1 OuT NC Vo _BARANCE Cc OuT LJ Ls] Ls] L] TO BE CONNECTED TO & MICROCOMPUTER ° CdS 10K FQ 47 nF TR 100 ,.F 2 ty sv 5 + —Vee It is possible to drive 1A by connecting Power Transistor. By shorting the 10pin to the GND, the output is shut down.

4 MITSUBISHI

7-42 ELECTRIC .

MITSUBISHI <Dig./Ana. INTERFACE> MS290P,FP +5V TRACKING REGULATOR WITH RESET CIRCUIT (3) Foldback Protection Circuit Application Example (M5290P Foldback System) The input/output voltage differential Vio should be ad- justed to be high enough considering the voltage difference developed at Ri. +Veo 5V 9 S 7.100 .F 9 9 ° one Ede] * fo] fo] fo] COLLECTOR , <Vee OUTPUT) OUTPUT) NC —Yo_ BALANCE oysaci tance OUTPUT Puy oe ee 0 10k “ut esa Fa | “ Ry sv ) [r.] 100 .F —Vee When two protective transistors are employed, the M5290P/FP can provide foldback characteristic for pro- tection purposes. The I, and | values are determined according to the external resistance. ve R+R. = Ret Rs / We RRL %0-65 (A) i ' . Ro H ht— a ' baht gig x2 (A) t i bh lp is Cases where Ii(peax)=!2* 500mA and 11~ 100mA Ry=Ry1= 139, Ro=Ro2=2kQ, Rg=Rg3=2k2 The required input/output voltage differential is 8V or greater. P ELECTRIC . 7-43

MITSUBISHI <Dig./Ana. INTERFACE> MS290P,FP +5V TRACKING REGULATOR WITH RESET CIRCUIT ATTENTION 1. In adjusting the output voltage (use (pin) 1 > ivr

1 H M5290P, FP is fixed the output voltage by inside resistors,

+S! but user can adjst it by using the outside resistor. is} (inside resistor:2.4kQ (to ®, 7.6k2 @ to @) | 1 Lo-4 2. In adjusting the tracking voltage (use ®pin (®pin on FP)) (P] trp) (2) ! ! 1 M5290P, FPis fixed the tracking voltage by inside resistor, | 1 i I 1 ! i but user can adjust it by using the output resistor. © f 1 @ i ' (insice resistor:(2 to © © to &, 10k@ for the M5290P ) ts} tsi 1@ to 6) © to ®, 10k for the M5290FP Lois LoI-d 3. Explaining figure of reset operation Positive When the positive output voltage is normal, the Reset VOLTAGE output is High. If it is lower than 4.2V, the Reset output is low. t (delay time is variable by connecting capacity at 7pin (6pin for the FP)) RESET tpa=7.0X10*x C(sec) OuTPUI " “ C:delay time capacity ‘_o_ — ' 7-44 . ELECTRIC