MM1027 MITSUMI | Alldatasheet
Document overview
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Technical content
Features
- Battery back-up 1. Low IC current consumption (loss current) 0.3µA typ. 2. Drop voltage inside IC (input/output voltage difference) IO=10µA 0.2V typ. 3. Reverse current (reverse leak current) 0.1µA max. 2. Normal operation MM1027 Drop voltage inside IC (input/output voltage difference) IO=70mA 0.2V typ. Output voltage VCC=5V IO=10mA 4.8V typ. Current consumption D.CONT OPEN 3.0mA max. External transistor drive current 25mA typ. MM1081 Drop voltage inside IC (input/output voltage difference) IO=120mA 0.25V typ. Output voltage VCC=5V IO=120mA 4.75V typ. Current consumption 350µA max. External transistor drive current (for output current increase) 25mA typ. TC source current 3.0µA typ. 3. Battery-Vcc switching voltage 3.3V typ. 4. Detection voltage (CS, CS 4.2V typ. 5. Battery checker 1 X type 2.70V typ. N type 2.50V typ. 6. Battery checker 2 X type 2.55V typ. N type 2.35V typ. Package TSOP-20A (MM1027XV, MM1027NV, MM1081XV) SOP-16A (MM1027XF, MM1027NF) DIP-16A (MM1027XD)
System Reset (with battery back-up) MM1027, 1081
Applications
- IC memory cards (RAM cards) 2. PCs, word processors 3. Fax machines, photocopiers, other office equipment 4. Other equipment with S-RAMs (equipment requiring back-up) Pin Assignment SOP-16A/DIP-16A 15 14 TSOP-20A 4 5 9 10 15 14 Function Pin no. TSOP-20A SOP-16A DIP-16A GND GND GND ADJ. NC NC NC ADJ. ADJ. TC TC TC NC CS CS CS NC NC NC CS CS CS DET.CONT DET.CONT NC Bat.DET1 Bat.DET1 DET.CONT NC NC Bat.DET1 Bat.DET2 Bat.DET2 NC Battery Battery Bat.DET2 VOUT VOUT NC External drive External drive Battery NC NC NC VCC VCC VOUT NC External drive VCC
System Reset (with battery back-up) MM1027, 1081 Block Diagram Absolute Maximum Ratings (Ta=25°C) Item Symbol Rating Units Storage temperature TSTG -40~+125 Operating temperature TOPR -20~+70 Power supply voltage VCC max. V Operating voltage VCCOP V Allowable loss Pd 300 mW Output current MM1027 IO1 mA MM1081 IO1 120 mA Output current IO2 200 µA Electrical Characteristics (Except where noted otherwise, Ta=25°C, VCC=5V, VBAT=3V) Item Symbol Measurement conditions Min. Typ. Max. Units Consumption MM1027 VCC=5V, VBAT=3V, IO=0mA 0.9 1.7 3.0 mA current 1 ICC1 D.CONT pin : OPEN MM1081 VCC=5V, VBAT=3V, IO=0mA 150 210 350 µA Consumption MM1027 ICC2 VCC=5V, VBAT=3V, IO=0mA 1.2 2.2 3.5 mA current 2 D.CONT pin : GND CS, CS detection voltage 1 VS1 VCC=H L, VBAT=3V, ADJ pin : OPEN 4.05 4.20 4.35 V CS, CS hysteresis voltage 1 VS1 VCC=L H 0.05 0.10 0.20 V Detection voltage MM1027 VS/ T ±0.08 %/°C temperature characteristic MM1081 ±0.06 CS, CS detection voltage 2 VS2 VCC=H L, VBAT=3V ADJ pin : 12kΩPULL UP (to VCC) 3.25 3.50 3.75 V CS, CS hysteresis voltage 2 VS2 VCC=L H 0.05 0.10 0.20 V CS output voltage L VCSL VCC=3V, ICS=3µA 0.05 0.10 V CS output voltage H VCSH VCC=5V, ICS=-3µA 4.85 4.95 V CS source current ICSH VCC=5V, VCS=4.6V current measured µA Note : IO1 expresses VCC output current value, and IO2 expresses VBATT output current value. All circuits CS•CS circuit unit
System Reset (with battery back-up) MM1027, 1081 Electrical Characteristics (Except where noted otherwise, Ta=25°C, VCC=5V, VBAT=3V) Item Symbol Measurement conditions Min. Typ. Max. Units CS sync current ICSL VCC=3.5, VCS=0.4V Current measured 0.5 2.0 mA CS VCC=5V, ICS=3µA 0.10 0.25 V CS VCC=4V, VOUT-VCSH, ICS=-3µA 0.14 0.40 V CS VCC=5V, VCS=0.4V Current measured 0.3 1.0 mA Operation limit voltage L VOPL Minimum power supply voltage at which 2.0 2.4 V CS pin can hold low level VCS <= 0.4V ON delay time 1 tPLH1 VCC=L H, TC : OPEN, C1=47pF µS OFF delay time 1 tPHL1 VCC=H L, TC : OPEN, C1=47pF 2.0 µS ON delay time 2 tPLH2 VCC=L H, TC : 1nF, C1=47pF 0.8 mS OFF delay time 2 tPHL2 VCC=H L, TC : 1nF, C1=47pF 2.0 µS BATT MM1027X VBD1 VCC=5V, R1=10kΩPULL UP 2.60 2.70 2.80 V detection voltage 1 MM1081N VBAT=H L (to VCC) BATT hysteresis voltage 1 VBD1 VCC=5V, R1=10kΩPULL UP 0.05 0.10 0.20 V VBAT=L H(to VCC) BATT MM1027X VBD2 VCC=5V, R2=10kΩPULL UP 2.45 2.55 2.65 V detection voltage 2 MM1081N VBAT=H L (to VCC) BATT hysteresis voltage 2 VBD2 VCC=5V, R2=10kΩPULL UP 0.05 0.10 0.20 V VBAT=L H (to VCC) BD output voltage L VBDL VCC=5V, VBAT=0V 0.2 0.4 V BD output sink current IBDSNK VCC=5V, VBAT=0V, VBD=4V 1.0 3.0 mA Leakage current IBDH VCC=5V, VBAT=3V, VBD=5V 0.2 µA I/O voltage MM1027 VSAT1 VCC=5V, IO=70mA 0.2 0.3 V difference 1 MM1081 VCC=5V, IO=120mA 0.25 0.4 I/O voltage difference 2 VSAT2 VBAT=3V, IO=10µA 0.2 0.3 V I/O voltage difference 3 VSAT3 VBAT=3V, IO=100µA 0.3 0.4 V External transistor driving current IBUD VCC=5V, V (TB) =4.5V mA Power supply switching voltage VBB VCC=H L, VBAT=3V 3.15 3.30 3.45 V Hysteresis voltage VBB VCC=L H, VBAT=3V 0.05 0.10 0.20 V Switching voltage MM1027 VBB/ T ±0.08 %/°C temperature characteristic MM1081 ±0.06 Loss current ILOS VCC=0V, VBAT=3V, IO=0µA 0.3 µA D.CONT pin : GND Reverse current IOREV VCC=0V, VBAT=3V, IO=0µA 0.1 µA D.CONT pin : OPEN TC source current ITCSCE VCC=5V, VTC=0V 2.0 3.0 5.0 µA CS
- CS circuit unit BD circuit unit Backup circuit unit VCSL VCSH ICSL
System Reset (with battery back-up) MM1027, 1081 Timing Chart VCC VBATT VOUT CS VBD1 VBD2 CS VS VBB VBD2 VBD1 VS1 VBB VBD2 VBD1
System Reset (with battery back-up) MM1027, 1081 Application Circuits (Example : MM1027XV)
System Reset (with battery back-up) MM1027, 1081 Characteristics (MM1027X) CS pin ON delay time VS. Capacitance ON delay time 100m 10m 100µ 10µ 0.1µ 0.01µ 0.001µ 100p 10p Delay time (S) Capacitance (F) OFF delay time Vs. Capacitance ON delay time OFF delay time Note : CS and CS Characteristics (MM1027 series) Current consumption I (mA) 5.000 .5000 /div .0000 .0000 5.000 VI .5000/div (V) CCONT GND CCONT OPEN Loss current during back-up IB (µA) 2.400 .6000 /div -3.600 .0000 VBAT=3V, IO=0µA 5.000 VI .5000/div (V) Output voltage 1 5.000 .5000 /div .0000 .0000 VO (V) -80.00 4.000 IO .8000/div (mA) /div .1000 VOUT VCC 5.000 VBAT=3V Shot key barrier diode reverse current IB (µA) 2.700 .9000 -6.300 .0000 /div VI .5000/div (V) 5.000 VBAT=0
System Reset (with battery back-up) MM1027, 1081 Output voltage 2 3 3.000 VO (V) .1000 2.000 .0000 /div -100.0 IO 10.00/div (V) VCC=0V ICS-VCS 1 ICS (mA) -20.00 2.000 .0000 .0000 /div 5.000 VCS .5000/div (V) CS pin Sink current VCC=4.5V VCS=Variable ICS-VCS 2 ICS (mA) -5.000 5.000 .0000 .0000 /div 3.500 VCS .3500/div (V) CS pin Sink current VCC=3.5V VCS=Variable ICS-VCS ICS (mA) 5.000 .5000 0000 000 /div 5.000 VCS .5000/div (V) VCC=5V VCS=Variable
- Connecting a resistor between ADJ pin and Vcc pin (effective only when lowering detection voltage) Calculated min. and max. values take into account resistance, etc. variance inside the IC. Refer to Figure 1 MITSUMI System Reset (with battery back-up) MM1027, 1081 ON delay time-Temperature PPM 800 750 700 -770 PPM/°C -706 PPM/°C -25 100 125 Tc pin (CT=1000PF±60PPM/ °C) Delay time Ambient temperature (°C) CS detection voltage adjustment (ADJ pin) 4.0 3.0 2.0 100 max. typ. min. Detection voltage (V) Resistor R1 (kΩ) CS detection voltage How to Adjust Detection Voltage Vs1 2. Using resistors to divide Vcc potential and connect to ADJ pin Detection voltage can be determined close to external resistance value by setting external R2 and R3 values small. Refer to Figure 2 (However, current increases when R2 and R3 are made smaller, so set at around R2+R3=6kΩ.)
System Reset (with battery back-up) MM1027, 1081 CS Output 0.5mS 2V/Div VCC CS *TC pin OPEN 0.5mS 2V/Div VCC CS *TC pin 1000pF CS 0.5mS 2V/Div VCC CS *TC pin OPEN VCC CS *TC pin 1000pF CS detection voltage adjustment (ADJ pin) CS detection voltage adjustment (ADJ pin) max. typ. min. Detection voltage Resistor R2 (kΩ)
System Reset (with battery back-up) MM1027, 1081 Characteristics (MM1081 series) Input/output voltage difference 1 (Vcc=5.0V) 4.0 4.5 5.0 50 60 70 80 90 100 110 120 130 140 150 Output voltage (V) Output current (mA) CS-CS 4.30 4.25 4.20 4.15 4.10 (V) -25 TEMP(°C) H L L H VCC-ICC VOUT-CS 47kΩ CS open 0.0000 5.000 .5000/div VCC (V) ICC (µA) 300.0 30.00/div .0000 Power supply switching voltage-Temperature 3.45 3.40 3.35 3.30 3.25 -25 TEMP(°C) (V) H L L H Timing Chart VCC VBATT VOUT CS BD1,BD2 D.CONT:OPEN BD1 D.CONT:GNO BD2 D.CONT:GNO CS 3.4V 3.6V 4.3V 5V 4.2V 3.5V 3.3V 3.4V3.6V 4.3V 4.2V 2.53V 2.38V 2.35V 2.50V 3.0V 3.5V3.3V The broken lines for CS and CS to VCC by 12kΩ.