IMP809TEUR

IMP809, IMP810 ISO 9001 Registered POWER MANAGEMENT General Description Key Features The IMP809/IMP810 are 2.5V,3.0V, 3.3V and 5.0V power supply supervisor circuits optimized for lowpower microprocessor (µP), microcontroller (µC) and digital systems. The IMP809/810 are improved dropin 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. Seven voltage thresholds are available to support 2.5V to 5V systems: - Improved Maxim MAX809/MAX810 replacement —Lower supply current…6µA —80% lower maximum supply current - Monitor 5V, 3.3V , 3V and 2.5V 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 125°C Applications - Embedded controllers - Battery operated systems Reset Threshold Suffix Voltage (V) L M J T S R Z - Intelligent instruments 4.63 4.38 4.00 3.08 2.93 2.63 2.32 - Wireless communication systems - PDAs and handheld equipment Pin Assignments SOT23 GND IMP809 (IMP810) VCC ¯¯¯¯¯¯ (RESET)RESET Daily Silver IMP www.ds-imp.com.cn 1 IMP809, IMP810 ISO 9001 Registered POWER MANAGEMENT Pin Descriptions Pin Number Name Function 1 GND Ground 2 (IMP809) ¯¯¯¯¯¯ RESET ¯¯¯¯¯¯ is asserted LOW if VCC falls below the reset threshold and remains LOW RESET for the 240ms typical reset timeout period (140ms minimum) after VCC exceeds the threshold. 2 (IMP810) RESET RESET is asserted HIGH if VCC falls below the reset threshold and remains HIGH for the 240ms typical reset timeout period (140ms minimum) after VCC exceeds t he threshold. VCC Power supply input voltage (3.0V, 3.3V, 5.0V) 3 Absolute Maximum Ratings Pin Terminal Voltage with Respect to Ground VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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 125°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 reliability. Block Diagram VCC VCC IMP809 (IMP810) ¯¯¯¯¯¯ RESET RESET GND Daily Silver IMP www.ds-imp.com.cn VCC ¯¯¯¯¯¯ RESET Input GND 2 IMP809, IMP810 ISO 9001 Registered POWER MANAGEMENT Electrical Characteristic Unless otherwise noted VCC is over the full voltage range, TA = –40°C to 125°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. VCC=2.5V for Z devices Parameter Input Voltage (VCC) Range Supply Current Reset Threshold Symbol Conditions Min VCC TA = 0°C to 70°C TA = – 40°C to 125°C 1.1 1.2 ICC TA TA TA TA VTH = – 40°C to 85°C = – 40°C to 85°C = 85°C to 125°C = 85°C to 125°C VCC VCC VCC VCC < 5.5V, L/M/J < 3.6V, R/S/T/Z < 5.5V, L/M/J < 3.6V, R/S/T/Z Low RESET Output Voltage (IMP810) High RESET Output Voltage (IMP810) Daily Silver IMP µA TA = 25°C TA = – 40°C to 85°C TA = 85°C to 125°C 4.31 4.25 4.16 4.38 M devices 4.45 4.50 4.56 TA = 25°C TA = – 40°C to 85°C TA = 85°C to 125°C 3.93 3.89 3.80 4.00 J devices 4.06 4.10 4.20 TA = 25°C TA = – 40°C to 85°C TA = 85°C to 125°C 3.04 3.00 2.92 3.08 T devices 3.11 3.15 3.23 TA = 25°C TA = – 40°C to 85°C TA = 85°C to 125°C 2.89 2.85 2.78 2.93 S devices 2.96 3.00 3.08 TA = 25°C TA = – 40°C to 85°C TA = 85°C to 125°C 2.59 2.55 2.50 2.63 R devices 2.66 2.70 2.76 TA = 25°C TA = – 40°C to 85°C TA = 85°C to 125°C 2.27 2.24 2.22 2.32 Z devices 2.37 2.39 2.42 140 100 VCC = VTH min., ISINK = 3.2mA, IMP809L/M/J VCC > 1.1V, ISINK = 50µA High RESET Output Voltage (IMP809) 15 10 25 20 4.70 4.75 4.86 VCC = VTH min., ISINK = 1.2mA, IMP809R/S/T/Z Low RESET Output Voltage (IMP809) 9 6 4.63 TA = 85°C to 125°C VOL V 4.56 4.50 4.40 TA = – 40°C to 85°C VCC > VTH max., ISOURCE = 500µA, IMP809R/S/T/Z 0.8VCC VCC > VTH max., ISOURCE = 800µA, IMP809L/M/J VCC -1.5 VOH V 30 ppm/°C 20 µs 240 560 840 ms 0.3 0.4 0.3 V VOH VOL Units 5.5 5.5 TA = 25°C TA = – 40°C to 85°C TA = 85°C to 125°C VCC = VTH to VTH - 100mV Reset Active Timeout Period Ma L devices Reset Threshold Stability VCC to Reset Delay Typ V VCC = VTH max., ISINK = 1.2mA, IMP810R/S/T/Z 0.3 0.4 VCC = VTH max., ISINK = 3.2mA, IMP810L/M/J 1.8V < VCC < VTH min., ISOURCE = 150µA www.ds-imp.com.cn 0.8VCC V V 3 ISO 9001 Registered IMP809, IMP810 POWER MANAGEMENT Typical Performance Characteristics Reset Timing The reset signal is asserted–LOW for the IMP809 and HIGH for the IMP810–when the VCC signal falls below the threshold trip voltage and remains asserted for 140ms minimum after the VCC has risen above the threshold. VCC 5V VTH Active Reset Timeout Period 0V ¯¯¯¯¯¯ RESET 140ms minimum 5V IMP809 0V 5V RESET IMP810 0V Figure 1. Reset Timing Diagram Negative VCC Transients The IMP809/810 protect µPs from brownouts and low VCC. Short duration transients of 100mV amplitude and 20µs or less duration typically do not cause a false RESET. Valid Reset with VCC under 1.1V To ensure logic inputs connected to the IMP809 ¯¯¯¯¯¯ RESET pin are in a known state when VCC is under 1.1V, a 100kΩ pull ¯¯¯¯¯¯ is needed. The value is not critical. A pull-up resistor to VCC is needed with the IMP810. -down resistor at RESET Daily Silver IMP www.ds-imp.com.cn 4 IMP809, IMP810 ISO 9001 Registered POWER MANAGEMENT Typical Performance Characteristics (Continued) VCC VCC 100kΩ IMP809 Power Supply Power Supply IMP810 ¯¯¯¯¯¯ RESET RESET 100kΩ GND GND Figure 2. ¯¯¯¯¯¯¯ RESET Valid with VCC Under 1.1V Figure 3. RESET Valid with VCC Under 1.1V Bi-directional Reset Pin Interfacing The IMP809/810 can interface with µP/µC bi-directional reset pins by connecting a 4.7kΩ resistor in series with the IMP809/810 reset output and the µP/µC bi-directional reset pin. BUF Buffered ¯¯¯¯¯¯ RESET VCC IMP809 µC or µP Power Supply 4.7kΩ ¯¯¯¯¯¯ RESET ¯¯¯¯¯¯ RESET Input GND GND Bi-directional I/O Pin (Example: 68HC11) Figure 4. Bi-directional Reset Pin Interfacing Daily Silver IMP www.ds-imp.com.cn 5 IMP809, IMP810 ISO 9001 Registered POWER MANAGEMENT Ordering Information Part Number 1 Reset Threshold (V) Package Marking2 (XXX Lot Code) Temperature Range Pin-Package 4.63 4.38 4.00 3.08 2.93 2.63 2.32 – 40°C to +125°C – 40°C to +125°C – 40°C to +125°C – 40°C to +125°C – 40°C to +125°C – 40°C to +125°C – 40°C to +125°C 3-SOT23 3-SOT23 3-SOT23 3-SOT23 3-SOT23 3-SOT23 3-SOT23 AAXXX ABXXX CWXXX ACXXX ADXXX AFXXX ZAXXX 4.63 4.38 4.00 3.08 2.93 2.63 2.32 – 40°C to +125°C – 40°C to +125°C – 40°C to +125°C – 40°C to +125°C – 40°C to +125°C – 40°C to +125°C – 40°C to +125°C 3-SOT23 3-SOT23 3-SOT23 3-SOT23 3-SOT23 3-SOT23 3-SOT23 AGXXX AHXXX AIXXX AJXXX AKXXX ALXXX ZBXXX IMP809 Active LOW Reset IMP809LEUR/T IMP809MEUR/T IMP809JEUR/T IMP809TEUR/T IMP809SEUR/T IMP809REUR/T IMP809ZEUR/T IMP810 Active HIGH Reset IMP809LEUR/T IMP810MEUR/T IMP810JEUR/T IMP810TEUR/T IMP810SEUR/T IMP810REUR/T IMP810ZEUR/T 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. XXX refers to lot. Related Products Max. Supply Current Package Pins IMP809 IMP810 IMP811 IMP812 15µA 15µA 15µA 15µA 3 3 4 4 ■ Manual RESET input Package Type SOT-23 Daily Silver IMP SOT-143 ■ Active-HIGH RESET output Active-LOW RESET output SOT-23 ■ ■ SOT-143 ■ ■ www.ds-imp.com.cn 6 IMP809, IMP810 ISO 9001 Registered POWER MANAGEMENT Mechanical Dimensions Plastic SOT-23 (3-Pin) Dimensions In Inches Symbol Min Dimensions In Millimeters Max Min Max A 0.035 0.045 0.900 1.150 A1 0.000 0.004 0.000 0.100 A2 0.035 0.041 0.900 1.050 b 0.012 0.020 0.300 0.500 c 0.003 0.006 0.080 0.150 D 0.110 0.118 2.800 3.000 E 0.047 0.055 1.200 1.400 E1 0.089 0.100 2.250 2.550 e 0.035 0.040 0.900 1.030 e1 0.071 0.079 1.800 2.000 L 0.022 REF 0.550 REF L1 0.012 0.020 0.300 0.500 θ 0° 8° 0° 8° Daily Silver IMP www.ds-imp.com.cn 7 ISO 9001 Registered IMP809, IMP810 POWER MANAGEMENT ISO 9001 Registered Daily Silver IMP Microelectronics Co.,Ltd 7 keda Road ,Hi-Tech Park, NingBo,Zhejiang,P.R.C Post Code:315040 Tel:(086)-574-87906358 Fax:(086)-574-87908866 Email:sales@ds-imp.com.cn http://www.ds-imp.com.cn @2015 Daily Silver IMP Printed in china Revision: G Issue Date: 14th.Oct.15 Type: Product The IMP logo is a registered trademark of Daily Silver IMP. All other company and product names are trademarks of their respective owners Daily Silver IMP www.ds-imp.com.cn 8