(China (Mainland))
Product Summary
The m51957bfp is a System Resetting IC for resetting of all types of logic circuits such as CPUs, and has the feature of setting the detection voltage by adding external resistance. The m51957bfp includes a built-in delay circuit to provide the desired retardation time simply by adding an external capacitor. The m51957bfp fined extensive applications, including battery checking circuit, level detecting circuit and waveform shaping circuit. Applications are reset circuit of Pch, Nch, CMOS, microcomputer, CPU and MCU, Reset of logic circuit, Battery check circuit, switching circuit back-up voltage, level detecting circuit, waveform shaping circuit, delay waveform generating circuit, DC/DC converter, over voltage protection circuit.
Parametrics
m51957bfp absolute maximum ratings: (1)Supply voltage VCC: 18 V; (2)Output sink current Isink: 6 mA; (3)Output voltage VO: 18 V; (4)Power dissipation Pd: 300 mW; (5)Operating temperature Topr: -30 to +85 °C; (6)Storage temperature Tstg: -40 to +125 °C; (7)Input voltage range VIN: -0.3 to VCC VCC ≤ 7 V, –0.3 to +7 V VCC > 7 V.
Features
m51957bfp features: (1)Few external parts; (2)Large delay time with a capacitor of small capacitance (td ≈ 100 ms, at 0.33 μF)(M51957, M51958); (3)Low threshold operating voltage (Supply voltage to keep low-state at low supply voltage): 0.6 V (Typ)at RL = 22 kΩ; (4)Wide supply voltage range: 2 V to 17 V; (5)Wide application range.
Diagrams
