STM1831 Datasheet, PDF (4/24 Pages) STMicroelectronics – Voltage detector with sense input and external delay capacitor

List of figures
List of figures
STM1831
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SOT23-5 pin connections (top view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Application hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Timing waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Supply current vs. sense voltage, V_CC = 3.0 V, V_DET = 2.0 V . . . . . . . . . . . . . . . . . . . . . . . 9
Supply current vs. input voltage, V_SEN = 1.9 V (RST asserted) . . . . . . . . . . . . . . . . . . . . . . 9
Detect voltage vs. ambient temperature, V_DET = 2.4 V . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Detect voltage vs. supply voltage, V_DET = 2.4 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Hysteresis voltage vs. ambient temperature, V_DET = 2.4 V . . . . . . . . . . . . . . . . . . . . . . . . 11
C_D pin sink current vs. supply voltage, V_SEN = 0 V, V_CD = 0.5 V . . . . . . . . . . . . . . . . . . . . 11
Output voltage vs. sense voltage, V_DET = 2.4 V, T_A = 25 °C, external pull-up resistor
on RST is 100 kΩ, C_D pin open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Output voltage vs. supply voltage, V_SEN = V_CC, external pull-up resistor
on RST is 100 kΩ, C_D pin open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Output current vs. supply voltage, V_SEN = 0 V, V_RST = 0.5 V. . . . . . . . . . . . . . . . . . . . . . . 13
Relative delay resistance vs. ambient temperature, V_CC = 5 V, V_SEN = 6 V, V_CD = 0 V . . 13
Release delay time vs. delay capacitance, T_A = 25 °C. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Detect delay time vs. delay capacitance, T_A = 25 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
RST output leakage current vs. ambient temperature,
V_CC = V_SEN = V_OUT = 6.0 V, C_D pin open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
RST output leakage current vs. output voltage, V_CC = V_SEN = 6.0 V,
T_A = 85 °C, C_D pin open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Sense current vs. supply voltage, V_SEN = 1.9 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Sense current vs. ambient temperature, V_CC = V_SEN = 5 V . . . . . . . . . . . . . . . . . . . . . . . . 16
AC testing input/output waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SOT23-5 - 5-lead small outline transistor package mechanical drawing . . . . . . . . . . . . . . 21
4/24
Doc ID 18180 Rev 1