PT7M7811 Datasheet, PDF (1/13 Pages) List of Unclassifed Manufacturers – Precision supply-voltage monitor

Data Sheet
PT7M7803/7809-7812/7823-7825
µP Supervisor Circuits
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Features
Description
z Precision supply-voltage monitor
- 4.63V (PT7M78xxL)
- 4.38V (PT7M78xxM except PT7M7803/09/10M)
- 3.08V (PT7M78xxT)
- 2.93V (PT7M78xxS)
- 2.63V (PT7M78xxR)
- 2.32V (PT7M78xxZ)
- 2.20V (PT7M78xxY)
- 4.00V (PT7M78xxJ)
- 4.26V (PT7M7803/09/10M)
- 2.25V (PT7M7823/24K)
z 200ms reset pulse width
z Debounced CMOS-compatible manual-reset input
(7811, 7812, 7823, 7825)
z Reset Output Signal for Watchdog and Power
Abnormal, Manual Reset
z Reset Push-Pull output (PT7M7809,7811,7823,
7824,7825)
z Reset Open-Drain output (PT7M7803)
z Voltage monitor for power-fail or low battery
warning
z Guaranteed RESET/RESET valid at V_CC=1.0V
The PT7M78xx family microprocessor (µP)
supervisory circuits are targeted to improve reliability
and accuracy of power-supply circuitry in µP systems.
These devices reduce the complexity and number of
components required to monitor power-supply and
battery functions.
The main functions are:
1. Asserting reset output during power-up, power-
down and brownout conditions for µP system.
2. Detecting power failure or low-battery
conditions with a 1.25V threshold detector.
3. Watchdog functions
4. Manual reset.
Applications
z Power-supply circuitry in µP systems
Ordering Information
Part Number
Package
PT7M7803XTE Lead free and Green SOT23-3
PT7M7809XTE Lead free and Green SOT23-3
PT7M7810XTE Lead free and Green SOT23-3
PT7M7811XTAE Lead free and Green SOT23-5
PT7M7812XTAE Lead free and Green SOT23-5
PT7M7823XTAE Lead free and Green SOT23-5
Note: “X” refers to voltage range, see below table.
Part Number
PT7M7824XTAE
PT7M7825XTAE
PT7M7811XTBE
PT7M7812XTBE
PT7M7809XUWF
Package
Lead free and Green SOT23-5
Lead free and Green SOT23-5
Lead free and Green SOT143
Lead free and Green SOT143
Wafer form
Suffix: X—Monitored Voltage
X
L
M¹⁾
T
S
R
Z
Y
J
K²⁾
Reset Threshold (V) 4.63 4.38 3.08 2.93 2.63 2.32 2.20 4.00 2.25
Note1): Threshold voltage=4.38V can be applied to all parts except PT7M7803/09/10M. PT7M7803/09/10M’s threshold voltage
is 4.26V.
2): Threshold voltage=2.25V only for PT7M7823/24K.
PT0109(10/10)
1
Ver: 15