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UT01VS50L Schematic ( PDF Datasheet ) - Aeroflex Circuit Technology

Teilenummer UT01VS50L
Beschreibung Voltage Supervisor
Hersteller Aeroflex Circuit Technology
Logo Aeroflex Circuit Technology Logo 




Gesamt 15 Seiten
UT01VS50L Datasheet, Funktion
Standard Products
UT01VS50L Voltage Supervisor
Data Sheet
July 28, 2014
www.aeroflex.com/voltsupv
FEATURES
4.75V to 5.5V Operating voltage range
Power supply (VDD) monitor set by the internal voltage
reference at 4.65V
Precision Input Voltage Monitor using an internal 1.25V
voltage reference
Watchdog Timer Circuit monitoring activity on WDI input
- Nominal timeout 1.6s
RESET output responding to the VDD monitor and the
manual reset input MR
- Nominal RESET pulse width 200ms
RESET level valid for VDD>=1.2V
Operating Temperature Range -55oC to +125oC
Low Power, Typical 400uA
Operational environment:
- Total dose: 300 krad(Si)
- SEL Immune: <110 MeV-cm2/mg @125oC
- SET Immune: <80 MeV-cm2/mg
Packaging options:
- 8-lead dual-in-line flatpack
Standard Microelectronics Drawing (SMD) 5962-11213
- QML Q and V
INTRODUCTION
The UT01VS50L’s function is to monitor vital supply and signal
voltages in microprocessor systems. It provides for safe reset
during power up, power down and brownout conditions by using
an internal precision voltage reference.
The UT01VS50L monitors activity at an independent watchdog
input by employing an internal timer and a watchdog output that
goes low if the input is not toggled within 1.6s. It provides for
precision voltage threshold detection on an independent voltage
input which could be used for battery or supply-low monitoring
of a supply voltage other than VDD.
The UT01VS50L includes an active low manual reset with an
internal pull-up.
APPLICATIONS
Voltage Supervisor function for various systems including
microprocessors, microcontrollers, DSPs and FPGAs
Critical battery and power supply monitoring
Replacement of older discrete solutions to improve reliability,
accuracy and reduce complexity of the systems
MR
RESET &
DIGITAL CONTROL
VDD +
-
WDI TIMER
4.65 V
GND
VREF
1.25 V
WDI TRANSITION
DETECTOR
OSC
-
PFI +
Figure 1. UT01VS50L Functional Block Diagram
1
WDO
RESET
WDI
PFO






UT01VS50L Datasheet, Funktion
Notes:
1. For devices procured with a total ionizing dose tolerance guarantee, the post-irradiation performance at 25oC per MIL-STD-883 Method 1019, Condition A, up to
the maximum TID level procured (see ordering information).
2. Unless otherwise specified, VDD = 4.75V to 5.5V, -55°C < TC < +125°C. RESET is the only parameter operable within 1.2V and the minimum recommended
operating supply voltage.
3. VOL, VOH characteristics apply to WDO, PFO and RESET
4. Guaranteed by design, but not tested.
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UT01VS50L pdf, datenblatt
Figure 5. 8-pin Dual-In-Line Flatpack
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