POWER MONITORING OUTPUT, 5.5 V INPUT, 100 mA CMOS VOLTAGE REGULATOR WITH 0.5 μA SUPER LOW CURRENT CONSUMPTION
2. Power monitor block
2. 1 Power monitoring output
This is a function that divides the input voltage (VIN) of the regulator into VIN/2 or VIN/3 and outputs the voltage.
For example, a microcontroller can monitor a battery voltage by inputting output voltage (VPMOUT) to the microcontroller
2. 2 Output voltage (VPMOUT)
This is the voltage of the divided VIN, which is VIN/2 in the S-1740 Series and VIN/3 in the S-1741 Series.
2. 3 Output offset voltage (VPOF)
This is the power monitor block offset voltage when VIN, the load current and the temperature are in a certain
Caution If the certain condition is not satisfied, the output voltage may exceed the accuracy range of
±30 mV. Refer to " Electrical Characteristics" for details.
2. 4 Output impedance (RPS)
This is the power monitor block impedance. It shows how much VPMOUT changes when the load current changes.
For example, the output impedance can be used in sampling rate calculation as signal source impedance when
VPMOUT from the PMOUT pin is input to the A/D converter as a microcontroller input signal.
2. 5 Power-up time (tPU) (S-1740/1741 Series A / C type)
This is the time from when the power monitoring output is enabled until VPMOUT stabilizes.
VPMOUT, VPOF and RPS are not guaranteed until the power-up time elapses.
2. 6 "L" output Nch ON resistance (RPLOW) (S-1740/1741 Series A / C type)
The ON resistance of the N-channel transistor built into the power monitor block.
When the power monitoring output is disabled, VPMOUT is set to the VSS level by the built-in N-channel transistor.