SAYPSLIASS System Reset (with battery back-up} MM1025, 1174 Monolithic IC MM1025, 1174 These ICs were developed for D-RAM and dummy S-RAM battery back-up. D-RAM and dummy S-RAM power supplies differ from that of S-RAMs because 5V or 3.3V of power supply is required even during battery back-up. Therefore, these ICs provide voltage trom a stable power supply during both normal operation and back-up. Also, the internal stable power supply switches automatically to battery back-up if the main power supply voltage goes down for any reason. 1. Battery back-up MM1025 Current consumption 600A typ. Input/output voltage difference IL=40mA 0.25V typ. Output current 40mA max. MM1174 Current consumption 300A typ. Input/output voltage difference [=40mA 0.13V typ. Output current 40mA max. 2. Normal operation MM1025 Input/output voltage difference I=80mA (built-in transistor) 0.29V typ. Output current Vec=6V 80mA typ. External transistor drive current Vcc= 6V 15mA typ. Current consumption 900A max. MM11 74 (fer external transistor) Input/output voltage difference IL=200mA 0.13V typ. Output current Depends on external transistor External transistor drive current (no built-in TR} Vec=3.6V 10mA typ. Current consumption 500A max. 3. Switching voltage from Vec to Battery Vcoc=High-Low MM1025 4.9 typ. MM1174 3.25 typ. 4. Vcc-Battery forced switching and detection voltage adjustment possible SOP-8A 1. Memory cards (D-RAM cards, other) 2. PCs, word processors and other equipment with D-RAMs 3. Fax machines, photocopiers and other office equipment with D-RAMsSAYPSLIASS System Reset (with battery back-up} MM1025, 1174 GND GND cs Vepatr Vout Vee oo UPRIPE AMG ooo Se cee eeREBMORE S 2 Sse Se Forced switching and detection voltage adjustment GND GND cs VBATT Vour Vee Trp External transistor drive Vec @ VBATT @ Forced re | switching pin 19.2k $ a] Note: Circled section: Built-in for MMtozs CS External only for MM1174SAPS System Reset (with battery back-up} MM1025, 1174 Voo=6V, Vaarr-0V, I-OmA Vec=3.6V, Veatt=0V, 1=0mA 0.25 | 0.50 | 1.00 Vec=5V, Vaatr=0V, T=80mA 0.15 | 0.29 | 0.40 Vec=3.0V, Vaarr=0V, T=200mA 0.13 | 020 v Vec=0V, Vaatr=6V, 1=0mA 400 | 600 | 780 Vec=0V, Vearr=3.6V, 1=0mA 150 | 300 | 600 BA Vec=0V, Vaarr=5V, T=40mA 0.15 | 0.25 | 0.40 Vec=0V, Vearr=3.0V, I1=20mA 0.13 | 0.20 V Vcc=6V or Veatr=6V, D=5mA 48 | 5.0 | 52 Vec=3.6V or Vaatr=3.6V, I1=3mA. 3.14 | 8.27 | 3.40 v Vee : In=0-80m<A, Veatt : h=040mA 0.05 Vec=0V, Vaatt=3.6V, =0~20mA 0.05 mA Vec or Veatt=5.5~10V, IL=5mA 0.05 Vee or Vaart=3.6V~10V, L=3mA 0.05 av Vee or VaaTr=6V, =5mA 0.01 3 Vec or VeaTr=3.6V, h=3mA 0.01 ae Vec=6V 4V, Vaatr=6V, I=40mA 48 | 49 | 5.1 Vec=AV3V, Veatr=3.6V, 1=3mA 3.1 | 325) 3.4 V Vec=4V 6V, Vaatt=6V, IL=40mA 100 | 200 | 400 Voc=3V-4V, Veatr=3.6V, 1=3mA 15 30 60 mv Vec=6V, Voc>Ampere meter>8PIN | 9.0 | 15.0 | 20.0 Vec=3.6V, Vcc-Ampere meter+ 8PIN| 5.0 | 10.0 | 20.0 mA Vec=6V, Veatr=6V, VourVcs 0.10 | 0.50 Veco=3.6V, VeaTr=3.6V, Vour-Ves 0.10 | 0.50 v Vec=4V, Veatt=6V 0.50 Voc=3.0V, Vaarr=3.6V 0.50 V ' mi ' i i Voc - i i ut 1 ri ola 1 mt ota 1 ot ota 1 ot ota : ri pot 1 mt riye VOUT - 1 a Alt 1 tt a ! i Ni 1 mt tl 1 mt ' ' ri I VOUT-AVCSH 5 mt ! VCSL | | | |SAPS System Reset (with battery back-up} MM1025, 1174 (MM1025 series} # Output voltage and current consumption for Vcc voltage supply IBaTT Vout (mA) (V) 1.000 5.000 1000 .5000 idiv /div { 0000 .0000 0000 Veatt 1.000/div (V) 10.00 (Ri=1209) & Output voltage and current consumption for Vcc voltage supply lec Vout (mA) (V) 2.000 5.000 2000 5000 idiv idiv .0000 .0000 -0000 Vec 1.000/div (V) 10.00 (RL=-) &: Power supply switching voltage Vout loc (mA) 5.000 100.0 5000 10.00 idiv idiv .0000 0000 4.0000 6.000 Vec .2000/div (V) (Ta = ambient temperature) = Output voltage and current consumption for battery voltage supply Ipatt Vout (mA) (V) 100.0 5.000 10.00 .5000 div idiv -0000 .0000 -0000 VeaTt 1.000/div (V) 10.00 (Ri=1200) Output voltage and current consumption for battery voltage supply loc Vout (mA) (Vv) 100.0 5.000 10.00 .5000 /div idiv .0000 .0000 0000 10.00 Veatt 1.000/div (V) (i=~)SAPS 5.0 48 Output voltage (V) 46 0 500 Vearr output current ao > 5.0 g L 48 a a a 6 +8, 20 Output voltage (V) > oO @ oa - oOo oS (MM1174 series} c 500 2 2 450 Current consumption 1 a < 400 2 . 5 350 Current consumption 2 s weeeebeececpeeee 300 -25 90 25 50 75 Temperature (C) =-20mMA 80V 3.0 28 2.8 2.6 Output voltage (Vj -25 0 25 50 75 Temperature (C) 50 Current consumption 1-2 temperatures Input/output voltage difference 2 temperature System Reset (with battery back-up} MM1025, 1174 Vee output current (external power transistor) Vcc=6.0V VeaTT=0V External Tr 2SA1020Y 1000 IL (mA) Vec=0V VBaTT=6.0V 40 60 70 IL (mA) Vee output current (no external power transistor) (No external power transistor) Vec=6.0V Veatt=0V 100 IL (mA) Input/output voltage difference 1 temperature (external transistor 2SA1020) 3.0 2. 2. 2. 2.2 Output voltage (V} 2.0 250 50 100 150 lout (mA) 200 Output voltage- Temperature Output voltage (V} -25 0 25 50 75 Temperature (C)SHIP SRIAAY System Reset (with battery back-up) MM1025, 1174 Maximum base drive current- Temperature CS output voltage H-L temperature > (mV) ~ _I = 20 = @ on > < o @ 15 S S > CS output voltage H = 2 10 3 100 a a Oo 5 Oo 4 CS output volt oO "25.0 25 50 75 -25 0 25 50 75 Temperature (C} Temperature (C) Base drive current Voe- lee, Isat loc (mA) 20.00 5.000 5.000 < <= 2.000/div E i E ~ 2 = = 5000/d .5000/div 0000 .0000 .0000 0000 1 000/div 10.00 2.750 0200/div 2.950 Voc (V) Vee (V} Vec- Vour, Ves Ves (V) 5.0000 5.0000 = 2 Ves > 5000/div .500/div .0000 0000 0.0000 0.00 1.000/div Vec (V)