SP809EK-L-4-6/TR Exar Corporation, SP809EK-L-4-6/TR Datasheet

no-image

SP809EK-L-4-6/TR

Manufacturer Part Number
SP809EK-L-4-6/TR
Description
IC MPU RESET CIRC 4.6V SOT23-3
Manufacturer
Exar Corporation
Type
Simple Reset/Power-On Resetr
Series
-r
Datasheet

Specifications of SP809EK-L-4-6/TR

Package / Case
TO-236-3, SC-59, SOT-23-3
Number Of Voltages Monitored
1
Output
Push-Pull, Totem Pole
Reset
Active Low
Reset Timeout
140 ms Minimum
Voltage - Threshold
4.6V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Internal Hysteresis
No
Operating Temperature Range
- 40 C to + 85 C
Output Type
Push-Pull
Manual Reset
No
Watchdog
No
Battery Backup Switching
No
Power-up Reset Delay (typ)
20 us
Supply Voltage (max)
6 V
Supply Voltage (min)
0.9 V
Supply Current (typ)
1 uA
Maximum Power Dissipation
320 mW
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SP809EK-L-4-6/TR
Manufacturer:
SIPEX
Quantity:
20 000
Part Number:
SP809EK-L-4-6/TR
Manufacturer:
EXAR
Quantity:
11 572
February 2011
GENERAL DESCRIPTION
The
microprocessor (μP) supervisory circuits used
to monitor power supplies in μP and digital
systems.
They provide applications with benefits of
circuit reliability and low cost by eliminating
external
voltage falls below preset threshold then a
reset signal is asserted for at least 140ms
after V
Both the SP809 and SP810 were designed with
a reset comparator to help identify invalid
signals, which last less than 140ms. The only
difference between them is that they have an
active-low
RESET
current (1μA) makes SP809/SP810 ideal for
portable equipment.
The devices are available in 3 pin SOT-23
package.
TYPICAL APPLICATION DIAGRAM
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
Part Number
CC
SP809/SP810
SP809N
output,
has risen above the reset threshold.
SP809
SP810
components.
RESET
respectively.
output
If
are
Open Drain Active Low
Push-Pull Active High
the
Output Type
Push-Pull Low
and
Fig. 1: SP809 / SP810 Application Diagram
low
Low
VCC
active-high
supply
supply
power
3
3
P
P
i
i
n
n
APPLICATIONS
FEATURES
• Portable Electronic Devices
• Electrical Power Meters
• Digital Still Cameras
• µP Power Monitoring
• Ultra Low Supply Current 1µA (typ)
• Guaranteed Reset valid to V
• 140ms Power-On Reset Pulse Width
• Internally Fixed Threshold
• 1.5% Voltage Threshold Tolerance
• 3 Pin SOT-23 Package
M
M
2.3V, 2.6V, 2.9V, 3.1V, 4.4V, 4.6V
i
i
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
c
c
r
r
o
o
p
p
r
r
o
o
c
c
e
e
s
s
s
s
o
o
r
r
S
S
S
S
u
u
P
P
p
p
8
8
e
e
0
0
r
r
v
v
9
9
i
i
s
s
www.exar.com
CC
/
/
o
o
r
r
= 0.9V
S
S
C
C
Rev. 2.0.0
P
P
i
i
r
r
8
8
c
c
1
1
u
u
0
i
0
i
t
t

Related parts for SP809EK-L-4-6/TR

SP809EK-L-4-6/TR Summary of contents

Page 1

... SP809/SP810 ideal for portable equipment. The devices are available in 3 pin SOT-23 package. Part Number Open Drain Active Low SP809N SP809 Push-Pull Active High SP810 TYPICAL APPLICATION DIAGRAM Exar Corporation 48720 Kato Road, Fremont CA 94538, USA ...

Page 2

... Reset Delay V CC TRIP Reset Active Timeout Period T RP RESET Output Voltage V OH RESET Output Voltage V OL RESET Output Voltage V OH RESET Output Voltage V OL Note 1: RESET output is for SP809; RESET output is for SP810. © 2011 Exar Corporation OPERATING RATINGS Input Voltage Range V Junction Temperature Range ..................... -40° ...

Page 3

... BLOCK DIAGRAM PIN ASSIGNMENT PIN DESCRIPTION Name Pin Number 1 GND RESET 2 RESET © 2011 Exar Corporation Fig. 2: SP809 / SP810 Block Diagram Fig. 3: SP809 / SP810 Pin Assignment Ground Signal Active Low Output Pin. RESET Output remains high while VCC is below the reset threshold Active High Output Pin ...

Page 4

... A SP809EK-L-2-6/TR -40°C≤T ≤+85°C A SP809EK-L-2-9/TR -40°C≤T ≤+85°C A SP809EK-L-3-1/TR -40°C≤T ≤+85°C A SP809EK-L-4-6/TR -40°C≤T ≤+85°C A SP809NEK-L-2-3/TR -40°C≤T ≤+85°C A SP809NEK-L-2-9/TR -40°C≤T ≤+85°C A SP809NEK-L-3-1/TR -40°C≤T ≤+85°C A SP809NEK-L-4-6/TR -40°C≤T ≤+85°C ...

Page 5

... TYPICAL PERFORMANCE CHARACTERISTICS All data taken 25°C, unless otherwise specified - Schematic and BOM from Application Information section of this A datasheet. Fig. 4: Supply Current versus Temperature Fig. 6: Power-Down Reset Delay versus Temperature Fig. 8: Normalized Reset Threshold versus Temperature © 2011 Exar Corporation Fig. 5: Power-Down Reset Delay versus Temperature Fig ...

Page 6

... CMOS logic inputs connecting to RESET can drift to undetermined voltages. Therefore, SP809/810 with CMOS is perfect for most applications of V down to 0.9V. CC However in applications where RESET must be valid down to 0V, adding a pull-down resistor to RESET causes any leakage currents to flow to ground, holding RESET low. © 2011 Exar Corporation ...

Page 7

... PACKAGE SPECIFICATION 3-P SOT23 IN © 2011 Exar Corporation 7 Rev. 2.0.0 ...

Page 8

... While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ...

Related keywords