Actual Packageversion is SC-59, not SOT-23 This Anachip datasheet is replaced with Diodes Inc. datasheet AP1701/2/3/4 AP1701/2/3/4 3-Pin Microprocessor Reset Circuits Features General Description - Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power-Supply Voltages - Fully Specified Over Temperature - Available in Three Output Configurations - Push-Pull RESET Low Output (AP1701/3) - Push-Pull RESET High Output (AP1702/4) - 200ms min Power-On Reset Pulse Width - 20A Supply Current (Typ.) - Guaranteed Reset Valid to VCC = +1V - Power Supply Transient Immunity - No External Components - 3-pin SOT23, TSOT23, Pb-Free Package The AP1701/2/3/4 are used for microprocessor (P) supervisory circuits to monitor the power supplies in P and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V powered circuits. These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 240ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. The AP1701/2/3/4 have push pull outputs. The AP1701/3 have an active low RESET output, while the AP1702/4 has an active high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. Low supply current makes the AP1701/2/3/4 ideal for use in portable equipment. The AP1701/2/3/4 is available in a 3-pin SOT23,TSOT23 package. Applications - Computers - Controllers - Intelligent Instruments - Critical P and C Power Monitoring - Portable/Battery Powered Equipment - Automotive Pin Descriptions Pin Assignments (Top View) GND GND 1 AP1701 AP1702 RESET (RESET) Name RESET (RESET) 3 VCC VCC 2 Description Ground Reset output pin L: for AP1701/3 H: for AP1702/4 Operating voltage input SOT-23/TSOT23 (Top View) RESET (RESET) GND 1 AP1703 AP1704 3 VCC 2 SOT-23/TSOT23 This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 1.4 Nov. 10, 2005 1/9 Actual Packageversion is SC-59, not SOT-23 This Anachip datasheet is replaced with Diodes Inc. datasheet AP1701/2/3/4 AP1701/2/3/4 3-Pin Microprocessor Reset Circuits Ordering Information AP170X X X Enable Voltage Package 1: Active-Low 2: Active-High 3: Active-Low 4: Active-High A: 4.63 B: 4.38 C: 4.00 D: 3.08 E: 2.93 F: 2.63 G: 2.25 W:SOT23 TW:TSOT23 Absolute Maximum Ratings Symbol VCC VRESET Parameter Rating Terminal Voltage (with respect to GND) RESET, RESET (push-pull) Unit -0.3 to +6.0 V -0.3 to (VCC + 0.3) V ICC Input Current, VCC 20 mA IO 20 mA 320 mW TOP Output Current, RESET, RESET Continuous Power Dissipation (TA = +70C), de-rate 4mW/C above +70C Operating Temperature Range -40 to +105 C TST Storage Temperature Range -65 to +150 C +300 C PD TLEAD Lead Temperature (soldering, 10s) This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 1.4 Nov. 10, 2005 2/9 Actual Packageversion is SC-59, not SOT-23 This Anachip datasheet is replaced with Diodes Inc. datasheet AP1701/2/3/4 AP1701/2/3/4 3-Pin Microprocessor Reset Circuits Electrical Characteristics Symbol Parameter VCC VCC Range ICC Supply Current VTH TS TDELAY Reset Threshold TA=25C Reset Threshold Tempco Set-up Time Reset Active Timeout Period VOL RESET Output Voltage Low VOH RESET Output Voltage-High VOL VOH RESET Output Voltage-Low RESET Output Voltage-High (TA=25C) Conditions TA = 0 C to +70oC VTH+1.0V AP1701/2/3/4A AP1701/2/3/4B AP1701/2/3/4C AP1701/2/3/4D AP1701/2/3/4E AP1701/2/3/4F AP1701/2/3/4G Min. 1.0 o 4.54 4.29 3.92 3.02 2.87 2.57 2.20 Typ. 20 4.63 4.38 4.00 3.08 2.93 2.63 2.25 Max. 5.5 30 4.72 4.47 4.08 3.14 2.99 2.68 2.30 o 100 o TA = 0 C to +70 C 100 VCC = VTH min, ISINK = 1.2mA, AP1701/3 VCC = VTH min, ISINK = 3.2mA VCC > 1.0V, ISINK = 50uA VCC > VTH max, ISOURCE = 500uA, 0.8VCC AP1701/3 VCC -1.5 VCC > VTH max, ISOURCE = 800uA VCC = VTH max, ISINK = 1.2mA, AP1702/4 VCC = VTH max, ISINK = 3.2mA 1.8V < VCC < VTH min, ISOURCE = 150uA, 0.8 VCC AP1702/4 V ppm/oC 30 VCC = 0 to (VTH - 100mV) Unit V A s 240 600 ms 0.3 0.4 0.3 V V 0.3 0.4 V V Application Circuit VCC VCC VCC Microprocessor AP170X RESET INPUT RESET (RESET) GND GND Anachip Corp. www.anachip.com.tw Rev. 1.4 Nov. 10, 2005 3/9 Actual Packageversion is SC-59, not SOT-23 This Anachip datasheet is replaced with Diodes Inc. datasheet AP1701/2/3/4 AP1701/2/3/4 3-Pin Microprocessor Reset Circuits Function Description When VCC falls below 1V, the AP1701/3 RESET output no longer sinks current--it becomes an open circuit. Therefore, high-impedance CMOS logic inputs connected to RESET can drift to undetermined voltages. This presents no problem in most applications since most P and other circuitry is inoperative with VCC below 1V. However, in applications where RESET must be valid down to 0V, adding a pull down resistor to RESET causes any stray leakage currents to flow to ground, holding RESET low. R1's value is not critical; 100k is large enough not to load RESET and small enough to pull RESET to ground. For the AP1702/4 if RESET is required to remain valid for VCC < 1V. A microprocessor's (P's) reset input starts the P in a known state. The AP1701/2/3/4 assert reset to prevent code-execution errors during power-up, power-down, or brownout conditions. They assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 240ms after VCC has risen above the reset threshold. The AP1701/2/3/4 have a push-pull output stage. Applications Information Negative-Going VCC Transients In addition to issuing a reset to the P during power-up, power-down, and brownout conditions, the AP1701/2/3/4 are relatively immune to short-duration negative-going VCC transients (glitches). The AP1701/2/3/4 do not generate a reset pulse. The graph was generated using a negative going pulse applied to VCC, starting 0.5V above the actual reset threshold and ending below it by the magnitude indicated (reset comparator overdrive). The graph indicates the maximum pulse width a negative going VCC transient can have without causing a reset pulse. As the magnitude of the transient increases (goes farther below the reset threshold), the maximum allowable pulse width decreases. Typically, a VCC transient that goes 100mV below the reset threshold and lasts 100s or less will not cause a reset pulse. A 0.1F bypass capacitor mounted as close as possible to the VCC pin provides additional transient immunity. Benefits of Highly Accurate Reset Threshold Most P supervisor ICs have reset threshold voltages between 5% and 10% below the value of nominal sup-ply voltages. This ensures a reset will not occur within 5% of the nominal supply, but will occur when the supply is 10% below nominal. When using ICs rated at only the nominal supply 5%, this leaves a zone of uncertainty where the supply is between 5% and 10% low, and where the reset may or may not be asserted. Ensuring a Valid Reset Output Down to VCC = 0 RESET is guaranteed to be a logic low for VCC > 1V. Once VCC exceeds the reset threshold, an internal timer keeps RESET low for the reset timeout period; after this interval, RESET goes high. If a brownout condition occurs (VCC dips below the reset threshold), RESET goes low. Any time VCC goes below the reset threshold, the internal timer resets to zero, and RESET goes low. The internal timer starts after VCC returns above the reset threshold, and RESET remains low for the reset timeout period. Anachip Corp. www.anachip.com.tw Rev. 1.4 Nov. 10, 2005 4/9 Actual Packageversion is SC-59, not SOT-23 This Anachip datasheet is replaced with Diodes Inc. datasheet AP1701/2/3/4 AP1701/2/3/4 3-Pin Microprocessor Reset Circuits Function Block Driver RESET / RESET Delay Circuit VREF Performance Characteristics Threshold 2.928 24 20 2.926 16 2.924 Iq 12 8 2.922 4 2.92 0 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Temp ( C ) Iq v.s Temp -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Temp Threshold v.s. Temp Anachip Corp. www.anachip.com.tw Rev. 1.4 Nov. 10, 2005 5/8 Actual Packageversion is SC-59, not SOT-23 This Anachip datasheet is replaced with Diodes Inc. datasheet AP1701/2/3/4 AP1701/2/3/4 3-Pin Microprocessor Reset Circuits Timing Diagram VTH VCC TDELAY TDELAY Active Low TS Active High TDELAY TDELAY Giltch Immunity Maximum Transient Duration(us) 3500 3000 3000 2500 2000 1500 1000 500 900 270 0 0 100 200 140 300 90 400 70 500 58 600 50 700 50 800 48 48 900 1000 1100 RESET COMPARATOR OVERDRIVE(mV) Anachip Corp. www.anachip.com.tw Rev. 1.4 Nov. 10, 2005 6/9 Actual Packageversion is SC-59, not SOT-23 This Anachip datasheet is replaced with Diodes Inc. datasheet AP1701/2/3/4 AP1701/2/3/4 3-Pin Microprocessor Reset Circuits Marking Information (Top View) 3 XX : Identification code XX Y M X 1 2 (See Appendix) Y : Year: 0-9 M : Month: A~L SOT23-3L/TSOT23-3L Appendix Part Number AP1701A AP1701B AP1701C AP1701D AP1701E AP1701F AP1701G AP1702A AP1702B AP1702C AP1702D AP1702E AP1702F AP1702G Identification Code EA EB EC ED EE EF W1 E0 E2 E3 E4 E5 E6 W2 Part Number AP1703A AP1703B AP1703C AP1703D AP1703E AP1703F AP1703G AP1704A AP1704B AP1704C AP1704D AP1704E AP1704F AP1704G Anachip Corp. www.anachip.com.tw Identification Code EG EH EI EJ EK EL W3 E7 E8 E9 EM EN EP W4 Rev. 1.4 Nov. 10, 2005 7/9 Actual Packageversion is SC-59, not SOT-23 This Anachip datasheet is replaced with Diodes Inc. datasheet AP1701/2/3/4 AP1701/2/3/4 3-Pin Microprocessor Reset Circuits Package Information HE E (1) Package Type: SOT23-3L e A A1 A2 b C D E e HE L Dimensions In Millimeters Min. 1.00 0.00 1.00 0.35 0.10 2.70 1.40 1.70 2.40 0.30 Nom. 1.20 1.15 0.175 2.90 1.60 2.00 2.70 - L C A1 b Symbol A A2 D Max. 1.40 0.10 1.30 0.50 0.25 3.10 1.80 2.30 3.00 0.55 Anachip Corp. www.anachip.com.tw Dimensions In Inches Min. 0.039 0.000 0.039 0.014 0.004 0.106 0.055 0.067 0.094 0.012 Nom. 0.047 0.045 0.007 0.114 0.063 0.079 0.106 - Max. 0.055 0.004 0.051 0.020 0.010 0.122 0.071 0.091 0.118 0.022 Rev. 1.4 Nov. 10, 2005 8/9 Actual Packageversion is SC-59, not SOT-23 This Anachip datasheet is replaced with Diodes Inc. datasheet AP1701/2/3/4 AP1701/2/3/4 3-Pin Microprocessor Reset Circuits Package Information (Continued) (2) Package Type: TSOT23-3L D L E E1 L1 R b C L2 A2 e1 A 2 Symbol A A1 A2 b C D E E1 e e1 L L1 L2 y R 1 2 4x1 A1 y Dimensions In Millimeters Min. Nom. Max. 0.75 0.90 0.00 0.10 0.70 0.75 0.80 0.35 0.51 0.10 0.25 2.80 2.90 3.00 2.60 2.80 3.00 1.50 1.60 1.70 0.95 BSC. 1.90 BSC. 0.37 0.60 REF. 0.25 BSC. 0.10 0.10 o o 0 8 o 7 NOM. 5o NOM. Anachip Corp. www.anachip.com.tw GAUGE PLANE e Dimensions In Inches Min. Nom. Max. 0.030 0.035 0.000 0.004 0.028 0.030 0.031 0.014 0.020 0.004 0.010 0.110 0.114 0.118 0.102 0.110 0.118 0.059 0.063 0.067 0.037 0.075 0.015 0.024 0.010 0.004 0.004 o o 0 8 o 7 NOM. 5o NOM. Rev. 1.4 Nov. 10, 2005 9/9