SGM803 SGMICRO [Shengbang Microelectronics Co, Ltd], SGM803 Datasheet

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SGM803

Manufacturer Part Number
SGM803
Description
Microprocessor Supervisory Circuit in 3-Pin SOT23
Manufacturer
SGMICRO [Shengbang Microelectronics Co, Ltd]
Datasheet

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GENERAL DESCRIPTION
The
monitor the power supply voltage in microprocessor and
digital systems. They provide a reset output during
power-up, power-down and brownout conditions. On
power-up, an internal timer holds reset asserted for 240 ms.
This holds the microprocessor in a reset state until
conditions have stabilized. The RESET output remains
operational with V
provides an active low reset signal ( RESET ) while the
SGM810 provides an active high signal (RESET) output.
The SGM809/SGM810 have push-pull outputs, whereas the
SGM803 has an open-drain output, which requires an
external pull-up resistor.
Seven reset threshold voltage options are available suitable
for monitoring 2.5V, 3V, 3.3V, and 5V supply voltages.
The reset comparator features built-in glitch immunity,
making it immune to fast transients on V
The low supply current of typically 17
SGM803/SGM809/SGM810 ideal for use in portable, battery
operated equipment. They are available in the 3-pin SOT23
package.
APPLICATIONS
Microprocessor Systems
Controllers
Intelligent Instruments
Automotive Systems
Safety Systems
Portable Instruments
TYPICAL OPERATION CIRCUIT
SGM803
SGM809
SGM810
SGM803/SGM809/SGM810
SGM803/SGM809
Shengbang Microelectronics Co, Ltd
Tel: 86/451/84348461
www.sg-micro.com
GND
V
CC
RESET
CC
as low as 1 V. The SGM803/SGM809
SGM803 only
R
PULL-UP
MICROPROCESSOR
RESET
supervisory
SYSTEM
CC
GND
.
µ
V
A makes the
CC
circuits
Microprocessor Supervisory
FEATURES
− Precision Voltage Monitor: 2.5V,3 V, 3.3 V, 5 V
− Superior Upgrade for MAX803/MAX809/MAX810
− Fully Specified over Temperature
− Low Power Consumption (17μA Typ)
− Reset Assertion Down to 1 V V
− 160 ms Min Power-On Reset
− Compact 3-Pin SOT23 Package
PIN CONFIGURATIONS(TOP VIEW)
Options
and SGM803/SGM809/SGM810
Open-Drain RESET Output(SGM803)
Push-Pull
Push-Pull RESET Output (SGM810)
RESET/RESET
RESET
Circuit in 3-Pin SOT23
GND
GND
RESET
1
2
1
2
SOT23-3(L-Type)
SGM803
SGM809
SGM810
SGM809-
SOT23-3
ZXN3L
Output (SGM809)
(only)
CC
3
3
V
V
CC
CC
REV. B

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SGM803 Summary of contents

Page 1

... RESET ) while the SGM810 provides an active high signal (RESET) output. The SGM809/SGM810 have push-pull outputs, whereas the SGM803 has an open-drain output, which requires an external pull-up resistor. Seven reset threshold voltage options are available suitable for monitoring 2.5V, 3V, 3.3V, and 5V supply voltages. ...

Page 2

... RANGE - 40°C to +125°C SGM803-LXN3 - 40°C to +125°C SGM803-MXN3 - 40°C to +125°C SGM803-TXN3 - 40°C to +125°C SGM803-SXN3 - 40°C to +125°C SGM803-RXN3 - 40°C to +125°C SGM803-ZXN3 - 40°C to +125°C SGM809-LXN3 - 40°C to +125°C SGM809-MXN3 - 40°C to +125°C SGM809-JXN3 - 40°C to +125°C SGM809-TXN3 - 40° ...

Page 3

... Active High reset. RESET remains high while V — 2 threshold, and remains high for 240 ms (typ) after V reset threshold Power supply voltage that is monitored. 3 ....................................................................... 250℃/W JA FUNCTION is below the reset CC rises above the CC is below the reset CC rises above the CC SGM803/809/810 ...

Page 4

... Low (SGM803L/M/J) Low (SGM809L/M/J) Low (SGM803R/S/T/L/M/J/Z) Low (SGM809R/S/T/L/M/J/Z) High (SGM809R/S/T/Z) High (SGM809L/M/J) Low (SGM810R/S/T/Z) Low (SGM810L/M/J) High (SGM810 R/S/T/L/M/J) RESET Open-Drain Output Leakage Current (SGM803) Specifications subject to change without notice. CONDITIONS T = 0°C to 70° 40°C to +125° < 5.5 V, SGM8_L/M/ 25° ...

Page 5

... Temperature(℃) Maximum Transient Duration Without Causing a Reset Pulse vs. RESET Comparator Overdrive 400 350 300 250 SGM8_L/M/J 200 150 100 50 SGM8_R/S/T 100 RESET Comparator Overdrive SGM803/809/810 = 200mV OD 90 110 130 110 130 1000 (mV) ...

Page 6

... TYPICAL PERFORMANCE CHARACTERISTICS RESET Output Voltage vs. Supply Voltage Supply Voltage 5V P-P SGM809R SGM809S 200ms/div RESET Output Voltage 6 SGM803/809/810 ...

Page 7

... SGM803/ SGM809/SGM810 series can operate effectively even when there are large degradations of the supply voltages. Another advantage of the SGM803/ SGM809/SGM810 series is its very accurate internal voltage reference circuit. These benefits combine to produce an exceptionally reliable voltage monitor circuit ...

Page 8

... SGM803/809/810 ...

Page 9

... Data Sheet changed from REV REV. B Changes to ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Shengbang Microelectronics Co, Ltd Unit 3, ChuangYe Plaza No.5, TaiHu Northern Street, YingBin Road Centralized Industrial Park Harbin Development Zone Harbin, HeiLongJiang 150078 P.R. China Tel.: 86-451-84348461 Fax: 86-451-84308461 www.sg-micro.com SGM803/809/810 9 Page ...

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