ELM73xxxxxxA
CMOS Voltage detector with delay circuit and Manual Reset function
ELM73xxxxxxA is CMOS voltage detector IC with delay function; delay time is adjustable by external capacitor. It operates with very low current consumption; 260nA(typ.). The type with Manual Reset function is also available in ELM73xxxBxxA series; reset condition can be manually asserted at any time. There are two output forms available; N-ch opendrain and CMOS output. The output logic is positive, therefore, the output becomes low level when VDD is lower than detection voltage. The standard detection voltages are 2.2V, 2.7V, 3.0V and 4.0V; ELM73 series can also be made as semi-custom IC within the range of 1.4~5.0V by 0.1V step.
| Detection voltage range | 1.4V to 5.0V(by 0.1V) |
|---|---|
| Low power operation | Typ.260nA (Vdd=VdetN+1V) |
| Accuracy of detection voltage | ±30mV(VdetN<2.5V) ±1.2%(VdetN>=2.5V) |
| Accuracy of delay time | Typ.15%(ExtC=4.7nF) |
| Hysteresis voltage | Typ.VdetN×1.04 |
| Manual reset input | MR pin (ELM73xxxBxxA only, Built-in pull-up resistor) |
| Package | SC-82AB(SOT-343) SC-70-5(SOT-353) SOT-25 WSON6-1.6x1.6 |
| Datasheet | ELM73series |
- Application
- Reset for microcomputers
- Voltage power shortage detectors
- Switch of back-up power source
- Battery checkers
Absolute Maximum Ratings
| Parameter | Symbol | Limit | Unit |
|---|---|---|---|
| Power supply voltage | Vdd | Vss-0.3 to 7.0 | V |
| Apply voltage to OUT pin | Vout | N-ch:Vss-0.3 to 7.0 CMOS:Vss-0.3 to Vdd+0.3 | V |
| Apply voltage to ExtC pin | VExtC | Vss-0.3 to Vdd+0.3 | V |
| Apply voltage to MR pin | Vmr | Vss-0.3 to Vdd+0.3 | V |
| Output current | Iout | 100 | mA |
| Power dissipation | Pd | 250(SOT-25) 150(SC-70-5(SOT-353)) 150(SC-82AB(SOT-343)) 500(WSON6-1.6x1.6) | mW |
| Operating temperature | Top | -40 to +85 | °C |
| Storage temperature | Tstg | -55 to +125 | °C |
Block diagram
ELM73xxNAxxA
ELM73xxCAxxA
ELM73xxNBxxA
ELM73xxCBxxA
