IMP809 A1PROS | Alldatasheet

Document overview

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Technical content

Applications

u Battery operated systems u Intelligent instruments u Wireless communication systems u PDAs and handheld equipment u Improved Maxim MAX809/MAX810 replacement — Lower supply current…6µA — 80% lower maximum supply current u Monitor 5V , 3.3V and 3V supplies u 140ms min. reset pulse width u Active-low reset valid with 1.1V supply (IMP809) u Small 3-pin SOT-23 package u No external components u Specified over full temperature range — –40°C to 105°C Block Diagrams IMP809 (IMP810) VCC VCC VCC GND GND RESET (RESET) 809/10_01.eps µP RESET Input The IMP809/IMP810 are 3.0V , 3.3V and 5.0V power supply supervisor cir- cuits 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 V CC down to 1.1V . The IMP810 has an active-high RESET output. The reset comparator is designed to ignore fast transients on V CC. 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. Six voltage thresholds are available to support 3V to 5V systems: IMP809, IMP8IMP809, IMP8 1100 POWER MANAGEMENT Reset Threshold Suffix Voltage (V) L 4.63 M 4.38 J 4.00 T 3.08 S 2.93 R 2.63 IMP , Inc. San Jose, CA 408-432-9100/www.impweb.com

IMP809, IMP8IMP809, IMP8 1100

Ordering Information

(IMP810) GND (RESET) RESET VCC3 809/10_02.eps SOT23 Package Marking2 Part Number 1 Reset Threshold (V) Temperature Range Pin-Package (XX Lot Code) IMP809 Active LOW Reset IMP809LEUR-T 4.63 –40°C to +105°C 3-SOT23 AAXX IMP809MEUR-T 4.38 –40°C to +105°C 3-SOT23 ABXX IMP809JEUR-T 4.00 –40°C to +105°C 3-SOT23 CWXX IMP809TEUR-T 3.08 –40°C to +105°C 3-SOT23 ACXX IMP809SEUR-T 2.93 –40°C to +105°C 3-SOT23 ADXX IMP809REUR-T 2.63 –40°C to +105°C 3-SOT23 AFXX IMP810 Active HIGH Reset IMP810LEUR-T 4.63 –40°C to +105°C 3-SOT23 AGXX IMP810MEUR-T 4.38 –40°C to +105°C 3-SOT23 AHXX IMP810JEUR-T 4.00 –40°C to +105°C 3-SOT23 AIXX IMP810TEUR-T 3.08 –40°C to +105°C 3-SOT23 AJXX IMP810SEUR-T 2.93 –40°C to +105°C 3-SOT23 AKXX IMP810REUR-T 2.63 –40°C to +105°C 3-SOT23 ALXX Notes: 1. Tape and Reel packaging is indicated by the -T designation. 2. Devices may also be marked with full part number: 809L, 810M etc. XX r efers to lot.

Related Products

IMP809 IMP810 IMP811 IMP812 Max. Supply Current 15µA 15µA 15µA 15µA Package Pins 3 3 4 4 Manual RESET input n n Package Type SOT -23 SOT -23 SOT -143 SOT -143 Active-HIGH RESEToutput n n Active-LOW RESET output n n

IMP809, IMP8IMP809, IMP8 1100 Parameter Symbol Conditions Min Typ Max Units Input Voltage (VCC ) Range VCC TA = 0°C to 70°C 1.1 5.5 V TA = –40°C to 105°C 1.2 5.5 Supply Current ICC TA = –40°C to 85°C VCC < 5.5V, L/M/J 9 15 µA TA = –40°C to 85°C VCC < 3.6V, R/S/T 6 10 TA = 85°C to 105°C VCC < 5.5V, L/M/J 25 TA = 85°C to 105°C VCC < 3.6V, R/S/T 20 Reset Threshold VTH L devices TA = 25°C 4.56 4.63 4.70 V TA = –40°C to 85°C 4.50 4.75 TA = 85°C to 105°C 4.40 4.86 M devices TA = 25°C 4.31 4.38 4.45 TA = –40°C to 85°C 4.25 4.50 TA = 85°C to 105°C 4.16 4.56 J devices TA = 25°C 3.93 4.00 4.06 TA = –40°C to 85°C 3.89 4.10 TA = 85°C to 105°C 3.80 4.20 T devices TA = 25°C 3.04 3.08 3.11 TA = –40°C to 85°C 3.00 3.15 TA = 85°C to 105°C 2.92 3.23 S devices TA = 25°C 2.89 2.93 2.96 TA = –40°C to 85°C 2.85 3.00 TA = 85°C to 105°C 2.78 3.08 R devices TA = 25°C 2.59 2.63 2.66 TA = –40°C to 85°C 2.55 2.70 TA = 85°C to 105°C 2.50 2.76 Reset Threshold Stability 30 ppm/°C VCC to Reset Delay VCC = VTH to VTH - 100mV 20 µs Reset Active Timeout Period VOL TA = –40°C to 85°C 140 240 560 ms TA = 85°C to 105°C 100 840 Low RESET Output Voltage (IMP809) VOL VCC = VTH min., ISINK = 1.2mA, IMP809R/S/T 0.3 V VCC = VTH min., ISINK = 3.2mA, IMP809L/M/J 0.4 VCC > 1.1V, ISINK = 50µA 0.3 High RESET Output Voltage (IMP809) VOH VCC > VTH max., ISOURCE = 500µA, IMP809R/S/T 0.8VCC V VCC > VTH max., ISOURCE = 800µA, IMP809L/M/JVCC -1.5 Low RESET Output Voltage (IMP810) VOL VCC = VTH max., ISINK = 1.2mA, IMP810R/S/T 0.3 V VCC = VTH max., ISINK = 3.2mA, IMP810L/M/J 0.4 High RESET Output Voltage (IMP810) VOH 1.8V < VCC < VTH min., ISOURCE = 150µA 0.8VCC V Absolute Maximum Ratings Pin Terminal Voltage with Respect to Ground (Derate 4mW/° C above 70°C)

Electrical Characteristics

These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability Unless otherwise noted VCC is over the full voltage range, T A = –40° C to 105° C. Typical values at TA = 25° C, VCC = 5V for L/M/J devices, VCC = 3.3V for T/S devices and VCC = 3V for R devices. Notes: 1. Production testing done at TA = 25° C. Over-temperature specifications guaranteed by design only. 2.‘R‘E‘S‘E‘T output is active LOW for the IMP809 and RESET output is active HIGH for the IMP810

1 GND Ground

2 RESET RESET is asserted LOW if VCC falls below the reset threshold and remains LOW for the

(IMP809) 240ms typical reset timeout period (140ms minimum) after VCC exceeds the threshold.

2 RESET RESET is asserted HIGH if VCC falls below the reset threshold and remains HIGH for the

(IMP810) 240ms typical reset timeout period (140ms minimum) after VCC exceeds the threshold. Figure 1. Reset Timing Diagram

IMP809, IMP8IMP809, IMP8 1100 Package Dimensions E A C Le1A1 H e D S B a SOT -23 (3-Pin).eps Inches Millimeters Min Max Min Max Plastic SOT-23 (3-Pin) A 0.031 0.050 0.80 1.27 A1 0.004 0.010 0.10 0.25 B 0.015 0.020 0.37 0.51 C 0.003 0.007 0.085 0.18 D 0.110 0.120 2.80 3.04 E 0.047 0.055 1.20 1.40 e 0.035 0.040 0.89 1.03 e1 0.070 0.080 1.78 2.05 H 0.083 0.1039 2.10 2.64 L 0.027 REF 0.069 REF S 0.018 0.024 0.45 0.60 Plastic SOT-23 (3-Pin)

IMP809, IMP8IMP809, IMP8 1100 IMP, Inc. Corporate Headquarters 2830 N. First Street San Jose, CA 95134-2071 Tel: 408-432-9100 Tel: 800-438-3722 Fax: 408-434-0335 Fax-on-Demand: 1-800-249-1614 (USA) Fax-on-Demand: 1-303-575-6156 (International) e-mail: info@impinc.com http://www.impweb.com The IMP logo is a registered trademark of IMP, Inc. All other company and product names are trademarks of their respective owners. © 1998 IMP, Inc. Printed in USA Preliminary Part No.: IMP809-810 Document Number: IMP809-6-6/98