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Pericom Semiconductor Corporation

PT7M1813 Datasheet Preview

PT7M1813 Datasheet

Supervisory Circuit

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PT7M1818/1813
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Supervisory Circuit
Features
Highly accurate: 1.5% (25°C)
Accurate power monitoring: 2.5V, 2.9V, 3.0V
(PT7M1818), and 4.1, 4.3, 4.6V (PT7M1813)
Operating voltage range: 1.0V ~ 5.5V
Operating temperature range: -40°C to + 85°C
Detect voltage temperature characteristics: 2.5%
TYP
Efficient open-drain output with internal 5kpull-up
resistor
Maintains reset for 200ms after VCC returns to an in-
tolerance condition
Description
The series are designed to monitor power supplies in µP
and digital systems. It provides excellent circuit
reliability and low cost by eliminating external
components and adjustments.
This device performs a single function: it asserts a reset
signal whenever the VCC supply voltage falls below a
preset threshold. Reset remains asserted for 200ms after
VCC has risen above the reset threshold.
PT7M1818/1813 are bidirectional output, allowing it to
be directly connected to µP with bidirectional reset
inputs.
Pin Configuration
PT7M1818/1813
1 RST
GND 3
2 VCC
SOT23-3
Pin Description
Name
Type
RST
GND
VCC
I/O
P
P
Description
Reset Output and Pushbutton Input: RST is asserted when VCC drops below voltage threshold
VTH-. Active low. When other devices pull RST low, the reset condition occurs and will remain a
reset timeout period after the external signal is off.
Ground
Supply Voltage.
2014-08-0010
PT0190-7
09/11/14
1




Pericom Semiconductor Corporation

PT7M1813 Datasheet Preview

PT7M1813 Datasheet

Supervisory Circuit

No Preview Available !

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Maximum Ratings
Storage Temperature ............................................................-65oC to +150oC
Ambient Temperature with Power Applied.......................... -40oC to +85oC
Supply Voltage to Ground Potential (Vcc to GND) ..............-0.3V to +7.0V
DC Input Voltage (All inputs except Vcc and GND)......-0.3V to VCC+0.3V
DC Output Current (All outputs) ..........................................................30mA
Power Dissipation .......................................... 320mW (Depend on package)
PT7M1818/1813
Supervisory Circuit
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Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other
conditions above those indicated in the operational
sections of this specification is not implied. Exposure
to absolute maximum rating conditions for extended
periods may affect reliability.
DC Electrical Characteristics
(TA= -40~85ºC, unless otherwise noted. Typical values are at TA = +25ºC)
Description
Sym.
Test Conditions
Min Typ Max Unit
Supply Voltage
Supply Current
Voltage Threshold
Hysteresis
VCC
ICC
VTH-
VHYS
VCC = 5.5V. No load.
VCC = 3.6V. No load.
+25C
-40C~85C
VTH+ - VTH-*
1.0
-
-
(VTH-)
0.985
(VTH-)
0.975
-
- 5.5 V
- 12 µA
-
VTH-
VTH-
50
10
(VTH-)
1.015
(VTH-)
1.025
-
µA
V
V
mV
Output
Driving
Output low
IOH = 8mA, VCC = 5V
VOL IOH = 4mA, VCC = 3V
IOH = -50µA, VCC = 1V
- - 0.4
- - 0.3 V
- - 0.09
Internal pull-up resistor
Rp RST
3.75 5 6.25 k
Note: VTH- is voltage threshold when VCC falls from high to low. VTH+ is voltage threshold when VCC rises from low to high.
2014-08-0010
PT0190-7
09/11/14
2


Part Number PT7M1813
Description Supervisory Circuit
Maker Pericom Semiconductor Corporation
Total Page 6 Pages
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