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Document overview

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Technical content

Features

  • 4.5μA supply current (typical) at 3.6V
  • Open-drain /RESET output
  • /RESET remains valid with VCC as low as 1V
  • 20ms, 140ms, or 1120ms (minimum) reset timeout options
  • 2.63V to 4.63V preset voltage threshold options
  • 2.5% voltage threshold accuracy over temperature
  • 3-pin SC70-3 package (2.0mm × 2.1mm)
  • 3-pin SOT-23 package (2.3mm × 2.9mm)
  • -40˚C to +125˚C junction temperature range

Applications

  • Critical microcomputer power monitoring
  • Portable equipment
  • Solid state drives
  • Printers/computers
  • Embedded controllers Typical Application VCC 100k VCC RESET VCC µPMIC803 GND GND RESET

Micrel, Inc. MIC803 August 3, 2015 2 Revision 1.2 Ordering Information(1) Part Number Marking(2) Nominal VTH (V) Minimum tRESET (3) (ms) Junction Temperature Range Package MIC803-46D2VC3 AS 4.63 20 –40° to +125°C SC70-3 MIC803-44D2VC3 AP 4.38 20 –40° to +125°C SC70-3 MIC803-41D2VC3 AK 4.10 20 –40° to +125°C SC70-3 MIC803-40D2VC3 A2 4.00 20 –40° to +125°C SC70-3 MIC803-31D2VC3 AG 3.08 20 –40° to +125°C SC70-3 MIC803-30D2VC3 AV 3.00 20 –40° to +125°C SC70-3 MIC803-29D2VC3 AD 2.93 20 –40° to +125°C SC70-3 MIC803-26D2VC3 AA 2.63 20 –40° to +125°C SC70-3 MIC803-46D3VC3 AT 4.63 140 –40° to +125°C SC70-3 MIC803-44D3VC3 AQ 4.38 140 –40° to +125°C SC70-3 MIC803-41D3VC3 AM 4.10 140 –40° to +125°C SC70-3 MIC803-40D3VC3 A5 4.00 140 –40° to +125°C SC70-3 MIC803-31D3VC3 A4 3.08 140 –40° to +125°C SC70-3 MIC803-30D3VC3 AX 3.00 140 –40° to +125°C SC70-3 MIC803-29D3VC3 AE 2.93 140 –40° to +125°C SC70-3 MIC803-26D3VC3 AB 2.63 140 –40° to +125°C SC70-3 MIC803-46D4VC3 AU 4.63 1120 –40° to +125°C SC70-3 MIC803-44D4VC3 AR 4.38 1120 –40° to +125°C SC70-3 MIC803-41D4VC3 AN 4.10 1120 –40° to +125°C SC70-3 MIC803-40D4VC3 A6 4.00 1120 –40° to +125°C SC70-3 MIC803-31D4VC3 AJ 3.08 1120 –40° to +125°C SC70-3 MIC803-30D4VC3 AZ 3.00 1120 –40° to +125°C SC70-3 MIC803-29D4VC3 A3 2.93 1120 –40° to +125°C SC70-3 MIC803-26D4VC3 AC 2.63 1120 –40° to +125°C SC70-3 MIC803-46D2VM3 AS 4.63 20 –40° to +125°C SOT23-3 MIC803-44D2VM3 AP 4.38 20 –40° to +125°C SOT23-3 MIC803-41D2VM3 AK 4.10 20 –40° to +125°C SOT23-3 MIC803-40D2VM3 A2 4.00 20 –40° to +125°C SOT23-3 MIC803-31D2VM3 AG 3.08 20 –40° to +125°C SOT23-3 MIC803-30D2VM3 AV 3.00 20 –40° to +125°C SOT23-3 MIC803-29D2VM3 AD 2.93 20 –40° to +125°C SOT23-3 MIC803-26D2VM3 AA 2.63 20 –40° to +125°C SOT23-3 MIC803-46D3VM3 AT 4.63 140 –40° to +125°C SOT23-3 Note: 1. All devices available in tape and reel only. (Order entry PN, add TR. Example: MIC803-26D4VM3 TR) Standard/full reel quantity is 3,000 pieces. Reel diameter is 7 inches. Hub diameter is 2 inches. Width is 8mm. 2. Underbar symbol (_) may not be to scale. 3. –40° to +85°C temperature range.

Micrel, Inc. MIC803 August 3, 2015 3 Revision 1.2 Ordering Information(1) (Continued) Part Number Marking(2) Nominal VTH (V) Minimum tRESET (3) (ms) Junction Temperature Range Package MIC803-44D3VM3 AQ 4.38 140 –40° to +125°C SOT23-3 MIC803-41D3VM3 AM 4.10 140 –40° to +125°C SOT23-3 MIC803-40D3VM3 A5 4.00 140 –40° to +125°C SOT23-3 MIC803-31D3VM3 A4 3.08 140 –40° to +125°C SOT23-3 MIC803-30D3VM3 AX 3.00 140 –40° to +125°C SOT23-3 MIC803-29D3VM3 AE 2.93 140 –40° to +125°C SOT23-3 MIC803-26D3VM3 AB 2.63 140 –40° to +125°C SOT23-3 MIC803-46D4VM3 AU 4.63 1120 –40° to +125°C SOT23-3 MIC803-44D4VM3 AR 4.38 1120 –40° to +125°C SOT23-3 MIC803-41D4VM3 AN 4.10 1120 –40° to +125°C SOT23-3 MIC803-40D4VM3 A6 4.00 1120 –40° to +125°C SOT23-3 MIC803-31D4VM3 AJ 3.08 1120 –40° to +125°C SOT23-3 MIC803-30D4VM3 AZ 3.00 1120 –40° to +125°C SOT23-3 MIC803-29D4VM3 A3 2.93 1120 –40° to +125°C SOT23-3 MIC803-26D4VM3 AC 2.63 1120 –40° to +125°C SOT23-3 Part Numbering Convention

Micrel, Inc. MIC803 August 3, 2015 4 Revision 1.2 Pin Configuration 3-Pin SC70 (Top View) 3-Pin SOT-23 (Top View) Pin Description Pin Number Pin Name Pin Function 1 GND Ground Pin. 2 /RESET /RESET goes low if VCC falls below the reset threshold (VTH), and remains asserted for one timeout period after VCC exceeds VTH. 3 VCC Power Supply Input and Monitored Voltage.

Micrel, Inc. MIC803 August 3, 2015 5 Revision 1.2 Absolute Maximum Ratings(4) Operating Ratings(5) Junction Thermal Resistance Electrical Characteristics(7) For typical values, VCC = 5.0V for MIC803-46/44/41/40, VCC = 3.3V for MIC803-31/30/29, VCC = 3.0V for MIC803-26; TJ = 25°C, Bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted. Parameter Conditions Min. Typ. Max. Units Power Supply Input Operating Voltage Range (VCC) V TJ = –40˚C to +125˚C 1.2 5.5 Supply Current (ICC) TJ = –40˚C to +85˚C VCC = 5.5V, No Load 5.5 15 µA VCC = 3.6V, No Load 4.5 10 TJ = +85˚C to +125˚C VCC = 5.5V, No Load 18 VCC = 3.6V, No Load 13 Voltage Threshold Reset Threshold (VTH) MIC803-46 TJ = –40˚C to +85˚C 4.50 4.63 4.75 V TJ = –40˚C to +125˚C 4.44 4.82 MIC803-44 TJ = –40˚C to +85˚C 4.25 4.38 4.50 TJ = –40˚C to +125˚C 4.20 4.56 MIC803-41 TJ = –40˚C to +85˚C 4.00 4.10 4.20 TJ = -40˚C to +125˚C 3.97 4.24 MIC803-40 TJ = –40˚C to +85˚C 3.89 4.00 4.10 TJ = –40˚C to +125˚C 3.80 4.20 MIC803-31 TJ = –40˚C to +85˚C 3.00 3.08 3.15 TJ = –40˚C to +125˚C 2.95 3.21 Notes: 4. Exceeding the absolute maximum ratings may damage the device. 5. The device is not guaranteed to function outside its operating ratings. 7. Specification for packaged product only.

Micrel, Inc. MIC803 August 3, 2015 6 Revision 1.2 Electrical Characteristics(7) (Continued) For typical values, VCC = 5.0V for MIC803-46/44/41/40, VCC = 3.3V for MIC803-31/30/29, VCC = 3.0V for MIC803-26; TJ = 25°C, Bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted. Parameter Conditions Min. Typ. Max. Units Voltage Threshold (Continued) Reset Threshold (VTH) MIC803-30 TJ = –40˚C to +85˚C 2.93 3.00 3.08 V TJ = –40˚C to +125˚C 2.90 3.11 MIC803-29 TJ = –40˚C to +85˚C 2.82 2.93 3.00 TJ = –40˚C to +125˚C 2.81 3.05 MIC803-26 TJ = –40˚C to +85˚C 2.55 2.63 2.70 TJ = –40˚C to +125˚C 2.50 2.76 Reset Time VCC to /RESET Delay (tD) VCC = VTH to (VTH – 100mV) 15 µs Reset Timeout Period (tRESET) TJ = –40˚C to +85˚C 20 35 44 ms TJ = –40˚C to +125˚C 16 48 TJ = –40˚C to +85˚C 140 230 360 TJ = –40˚C to +125˚C 112 420 TJ = –40˚C to +85˚C 1120 1800 2400 TJ = –40˚C to +125˚C 900 3200 Reset Output /RESET Output Voltage (VOL) VCC ≥ 4.0V, ISINK = 3.2mA 0.4 V VCC > 2.5V, ISINK = 1.2mA 0.3 V VCC ≥ 1.0V, ISINK = 50µA 0.3 V /RESET Output Leakage VCC > VTH, /RESET Deasserted 1 μA

Micrel, Inc. MIC803 August 3, 2015 7 Revision 1.2 Typical Characteristics VCC Operating Supply Current vs. Temperature -50 -20 10 40 70 100 130 TEMPERATURE (°C) SUPPLY CURRENT (µA) VCC = 3.6V VCC to /RESET Delay vs. Temperature -50 -20 10 40 70 100 130 TEMPERATURE (°C) VCC to /RESET DELAY (µs) VCC = VTH to VTH-100mV Reset Timeout Period (D3) vs. Temperature 200 220 240 260 280 300 -50 -20 10 40 70 100 130 TEMPERATURE (°C) RESET TIMEOUT PERIOD (ms) VCC = 5.5V Normalized Reset Threshold vs. Temperature 0.988 0.992 0.996 1.000 1.004 -50 -20 10 40 70 100 130 TEMPERATURE (°C) NORMALIZED RESET THRESHOLD (V) VCC Operating Supply Current vs. Supply Voltage 0 1 2 3 4 5 6 SUPPLY VOLTAGE (V) SUPPLY CURRENT (µA) VTH = 2.93V Maximum Transient Duration vs Overdrive 0 200 400 600 800 1000 OVERDRIVE VOLTAGE, VTH - VCC (mV) MAXIMUM TRANSIENT DURATION (µs) VTH = 2.93V

Micrel, Inc. MIC803 August 3, 2015 8 Revision 1.2 Timing Diagram VCC VTH RESET VOL tRESET tD tRESET Functional Diagram RESET GENERATOR VCC (3) GND (1) RESET (2) MIC803 - VTH

Micrel, Inc. MIC803 August 3, 2015 10 Revision 1.2 Package Information and Recommended Landing Pattern(8) 3-Pin SC70 (MM) Note:

Micrel, Inc. MIC803 August 3, 2015 11 Revision 1.2 Package Information and Recommended Landing Pattern(8) 3-Pin SOT-23 (MM)

Micrel, Inc. MIC803 August 3, 2015 12 Revision 1.2 MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com Micrel, Inc. is a leading global manufacturer of IC solutions for the worldwide high pe rformance linear and power, LAN, and timing & communications markets. The Company’s products include advanced mixed -signal, analog & power semiconductors; high- performance communication, clock management, MEMs-based clock oscillators & crystal-less clock generators, Ethernet switches, and physical layer t ransceiver ICs. Company customers include leading manufacturers of enterprise, consumer, industrial, mobile, telecommunications, automotive, and computer produ cts. Corporation headquarters and state -of-the-art wafer fabrication facilities are located in San Jose, CA, with regional sales and support offices and advanced technology design centers situated throughout the Americas, Europe , and Asia. Additionally, the Company maintains an extensive network of distributors and reps worldwide. Micrel makes no representations or warranties with respect to the accuracy or completeness of the inf ormation furnished in this data sheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. E xcept as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where mal function of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are inte nded for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2010 Micrel, Incorporated.