Features: `Improved Maxim MAX809/MAX810 replacement
- Lower supply current.6µA
- 80% lower maximum supply current
`Monitor 5V, 3.3V and 3V supplies
`140ms min. reset pulse width
`Active-low reset valid with 1.1V supply (IMP809)
`Small 3-pin SOT-23 package
`No external components
`Specified over full temperature range
- 40°C to 105°CApplication·Embedded controllers
·Battery operated systems
·Intelligent instruments
·Wireless communication systems
·PDAs and handheld equipmentSpecificationsVCC . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3V to 6.0V
RESET, RESET. . . . . . . . . . . . . 0.3V to (VCC + 0.3V)
Input Current at VCC . . . . . . . . . . . . . . . . . . .. 20mA
Output Current: RESET, RESET . . . . . . . . ..... 20mA
Rate of Rise at VCC . . . . . . . . . . . . . . . . . . . . 100V/µs
Power Dissipation (TA= 70°C) . . . . . . . . . ... 320mW
Derate 4mW/°C above 70°C)
Operating Temperature Range . . . . 40°C to 105°C
Storage Temperature Range . . . . . . 65°C to 160°C
Lead Temperature (soldering, 10 sec) . . . . ... 300°C
These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliabilityDescriptionThe IMP809/IMP810 are 3.0V, 3.3V and 5.0V power supply supervisor circuits optimized for low-power microprocessor (µP), microcontroller (µC) and digital systems. The IMP809/810 are improved drop-in replacements for the Maxim MAX809/810 and feature 60% lower supply current.
A reset signal is issued if the power supply voltage drops below a preset reset threshold and is asserted for at least 140ms after the supply has risen above the reset threshold. The IMP809 has an active-low RESET output that is guaranteed to be in the correct state for VCC down to 1.1V. The IMP810 has an active-high RESET output. The reset comparator is
designed to ignore fast transients on VCC.
Low supply current makes the IMP809/IMP810 ideal for use in portable and battery operated equipment. The IMP809/IMP810 are available in a compact 3-pin SOT23 package.
The IMP809 is designed as one kind of 3.0V, 3.3V and 5.0V power supply supervisor that is optimized for low-power microprocessor (P), microcontroller (C) and digital systems. This device can be used in (1)embedded controllers; (2)battery operated systems; (3)intelligent instruments; (4)wireless communication systems; (5)PDAs and handheld equipment. Also it is available in a compact 3-pin SOT23 package.
Features of the IMP809 are:(1)improved Maxim MAX809/MAX810 replacement: lower supply current is 6A and 80% lower maximum supply current; (2)monitor 5V, 3.3V and 3V supplies; (3)140ms min. reset pulse width; (4)active-low reset valid with 1.1V supply (IMP809); (5)small 3-pin SOT-23 package; (6)no external components; (7)specified over full temperature range: -40°C to 105°C.
The absolute maximum ratings of the IMP809 can be summarized as:(1)Vcc:-0.3V to 6.0V;(2)RESET, RESET:-0.3V to (Vcc+0.3V);(3)input current at Vcc:20 mA;(4)output current: RESET, RESET:20 mA;(5)rate of rise at Vcc:100 V/s;(6)power dissipation (TA=70°C):320 mW;(7)operating temperature range:-40°C to 105°C;(8)storage temperature range:-65°C to 160°C;(9)lead temperature (soldering, 10 sec):300°C. If you want to know more information such as the electrical characteristics about the IMP809, please download the datasheet in www.seekic.com or www.chinaicmart.com .
IMP809 Data Sheet
