ACE302 Low Voltage Detector with Built-in Delay Circuit Description ACE302 is a series of high precision voltage detector with ultra low current consumption (500nA typ. at VDD=3.0V) and a built-in delay circuit. It can work at very low voltage, which makes it perfect for system reset. ACE302 is composed of high precision voltage reference, comparator, delay circuit, output driver and resistor array. Internally preset detect voltage has a low temperature drift and requires no external trimming. Two type of output, CMOS and N-channel open-drain are available. Features High-precision detection Voltage：2% Detection Voltage：0.9V~6.0V (in 0.1V steps) Built-in Power on Reset Delay Time circuit::Refer to Selection Guide Operating Voltage range：0.7V~10V Ultra-low current consumption：500nA typ. (at VDD＝3.0V) Two Output forms: CMOS and N-channel open-drain (Active Low) Application Power monitor for portable equipment such as PDA, DSC, Mobile phone,Notebook,MP3 CPU and Logic Circuit Reset Battery Checker Battery Back-up Circuit Power Failure Detector Absolute Maximum Ratings Parameter Max Unit Input Voltage -0.3~10 V Output Voltage -0.3~12 V Output Current 70 mA Power Dissipation 250 mW Ambient temperature -40~85 ℃ Storage temperature -40~150 ℃ VER 1.5 1 ACE302 Low Voltage Detector with Built-in Delay Circuit Packaging Type SOT-23-3 SOT-23-3 Description 3 1 Function 1 VSS GND Pin 2 VOUT Voltage detection output pin 3 VDD Voltage input Pin 2 Ordering information ACE302 X XXX X XX + H Halogen - free Pb - free Package type BM: SOT-23-3 Delay time: A:50ms / B:100ms / C:150ms / D:200ms / E:250ms / F:300ms / G:400ms Detector Voltage: 090…0.9V / 100…1.0V / 263…2.63V / 300…3.0V / 465…4.65V…..600…6.0V (In 0.1V step) Output type: N: Nch C: CMOS Recommended Work Conditions Item Min Input Voltage (Vin) 0.7 Ambient Temperature (TJ) -40 Recommended 25 Max Unit 10 V 85 ℃ VER 1.5 2 ACE302 Low Voltage Detector with Built-in Delay Circuit Block diagram N channel open-drain CMOS output Electrical Characteristics ACE302N090DBM+ (0.9V) (Topt=25℃, Unless otherwise specified) Symbol Parameter -VDET ISS VDDH VDDL Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage IOUT Output current Conditions VDD=2.9V Nch VDS=0.05V，VDD=0.7V VDS=0.50V，VDD=0.8V Pch VDS=-2.1V，VDD=4.50V Reference data Min. Typ. Max. 0.882 0.9 0.918 1 1.5 10 0.5 0.01 0.05 0.05 0.50 1.0 2.0 Unit V uA V V mA mA ACE302N270DBM+ (2.7V) (Topt=25℃, Unless otherwise specified) Symbol Parameter -VDET ISS VDDH VDDL Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage IOUT Output current Conditions VDD=4.7V Reference data Min. Typ. Max. 2.646 2.7 2.754 0.5 1 10 0.5 Nch VDS=0.05V，VDD=0.7V 0.01 0.05 Pch VDS=-2.1V，VDD=4.50V 1.0 2.0 Unit V uA V V mA mA VER 1.5 3 ACE302 Low Voltage Detector with Built-in Delay Circuit ACE302N300DBM+ (3.0V) (Topt=25℃, Unless otherwise specified) Symbol Parameter -VDET ISS VDDH VDDL Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage IOUT Output current Conditions VDD=5.0V Reference data Min. Typ. Max. 2.94 3.0 3.06 0.5 1 10 0.5 Nch VDS=0.05V，VDD=0.7V 0.01 0.05 Pch VDS=-2.1V，VDD=4.50V 1.0 2.0 Unit V uA V V mA mA ACE302N340DBM+ (3.4V) (Topt=25℃, Unless otherwise specified) Symbol Parameter -VDET ISS VDDH VDDL Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage IOUT Output current Conditions VDD=5.0V Reference data Min. Typ. Max. 3.332 3.4 3.468 0.5 1 10 0.5 Nch VDS=0.05V，VDD=0.7V 0.01 0.05 Pch VDS=-2.1V，VDD=4.50V 1.0 2.0 Unit V uA V V mA mA ACE302N440DBM+ (4.4V) (Topt=25℃, Unless otherwise specified) Symbol Parameter -VDET ISS VDDH VDDL Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage IOUT Output current Conditions VDD=6.4V Reference data Min. Typ. Max. 4.312 4.4 4.488 0.5 1 10 0.5 Nch VDS=0.05V，VDD=0.7V 0.01 0.05 Pch VDS=-2.1V，VDD=8.0V 1.5 3.0 Unit V uA V V mA mA VER 1.5 4 ACE302 Low Voltage Detector with Built-in Delay Circuit Electrical Characteristics By Detector Threshold Detector Threshold Supply Current1 Supply Current2 -Vdet[V] Iss1[uA] Iss2[uA] Part Number Min Typ Max ACE302X090XXX+ 0.882 0.900 0.918 ACE302X100XXX+ 0.980 1.000 1.020 ACE302X110XXX+ 1.078 1.100 1.122 ACE302X120XXX+ 1.176 1.200 1.224 ACE302X130XXX+ 1.274 1.300 1.326 ACE302X140XXX+ 1.372 1.400 1.428 ACE302X150XXX+ 1.470 1.500 1.530 ACE302X160XXX+ 1.568 1.600 1.632 ACE302X170XXX+ 1.666 1.700 1.734 ACE302X180XXX+ 1.764 1.800 1.836 ACE302X190XXX+ 1.862 1.900 1.938 ACE302X200XXX+ 1.960 2.000 2.040 ACE302X210XXX+ 2.058 2.100 2.142 ACE302X220XXX+ 2.156 2.200 2.244 ACE302X230XXX+ 2.254 2.300 2.346 ACE302X240XXX+ 2.352 2.400 2.448 ACE302X250XXX+ 2.450 2.500 2.550 ACE302X260XXX+ 2.548 2.600 2.652 ACE302X270XXX+ 2.646 2.700 2.754 ACE302X280XXX+ 2.744 2.800 2.856 ACE302X290XXX+ 2.842 2.900 2.958 ACE302X300XXX+ 2.940 3.000 3.060 ACE302X310XXX+ 3.038 3.100 3.162 ACE302X320XXX+ 3.136 3.200 3.264 ACE302X330XXX+ 3.234 3.300 3.366 ACE302X340XXX+ 3.332 3.400 3.468 ACE302X350XXX+ 3.430 3.500 3.570 ACE302X360XXX+ 3.528 3.600 3.672 ACE302X370XXX+ 3.626 3.700 3.774 ACE302X380XXX+ 3.724 3.800 3.876 ACE302X390XXX+ 3.822 3.900 3.978 ACE302X400XXX+ 3.920 4.000 4.080 ACE302X410XXX+ 4.018 4.100 4.182 ACE302X420XXX+ 4.116 4.200 4.284 Condition Typ Max Vdd= (-Vdet) +0.1V Condition Typ Max 1.0 1.5 0.5 1.0 Vdd= 0.5 1.0 (-Vdet) +2V VER 1.5 5 ACE302 Low Voltage Detector with Built-in Delay Circuit ACE302X430XXX+ 4.214 4.300 4.386 ACE302X440XXX+ 4.312 4.400 4.488 ACE302X450XXX+ 4.410 4.500 4.590 ACE302X460XXX+ 4.508 4.600 4.692 ACE302X470XXX+ 4.606 4.700 4.794 ACE302X480XXX+ 4.704 4.800 4.896 ACE302X490XXX+ 4.802 4.900 4.998 ACE302X500XXX+ 4.900 5.000 5.100 ACE302X510XXX+ 4.998 5.100 5.202 ACE302X520XXX+ 5.096 5.200 5.304 ACE302X530XXX+ 5.194 5.300 5.406 ACE302X540XXX+ 5.292 5.400 5.508 ACE302X550XXX+ 5.390 5.500 5.610 ACE302X560XXX+ 5.488 5.600 5.712 ACE302X570XXX+ 5.586 5.700 5.814 ACE302X580XXX+ 5.684 5.800 5.916 ACE302X590XXX+ 5.782 5.900 6.018 ACE302X600XXX+ 5.880 6.000 6.120 Minimum Output Current1 Output Current2 Operating Voltage Iout1[mA] Condition N-ch VDS=0.05V,VDD=0.7V Iout2[mA] Min. Typ. Condition Detector Threshold Temperature Coefficient VDDL[V] Min. Typ. Typ. - Max. Condition Typ. 0.7 -40℃~ 85℃ 100 VDD=0.85V 0.1 0.5 0.01 0.05 N-ch,VDS=0.5V VDD=1.0V 0.2 1.0 0.5 VDD=1.5V 1.0 2.0 Electrical Characteristics By Output Delay Time Part Number Test Condition ACE302XXXXAXX+ ACE302XXXXBXX+ ACE302XXXXCXX+ ACE302XXXXDXX+ ACE302XXXXEXX+ ACE302XXXXFXX+ ACE302XXXXGXX+ VDD=1.0V to Vdet+1.0V Output Delay Time Min Typ Max 45 50 55 90 100 110 135 150 165 180 200 220 225 250 275 270 300 330 360 400 440 Unit ms VER 1.5 6 ACE302 Low Voltage Detector with Built-in Delay Circuit Function description High precision low temperature co-efficiency reference voltage is applied to the negative input of a comparator. Input voltage, divided by resistor array of Ra and Rb, is applied to the positive input of the comparator. Output of the comparator passes a delay circuit and a series of buffer to drive the output CMOS pair. VDET =VREF*(1+Ra/Rb) VER 1.5 7 ACE302 Low Voltage Detector with Built-in Delay Circuit No Operation status Output status I VDD>Vdet Output voltage is equal to the supply voltage II VDD drops below Vdet Output voltage equals to GND level III VDD drops further below VDDL Output voltage is undefined IV VDD rises above VDDL Output voltage equals to GND level V VDD rises above Vdet Output voltage equals to supply voltage after Tdelay Typical Circuits (1) Supply current test circuit ACE302 (3) N-ch Drive Output Current Test Circuit AC302 (2) Detector threshold test circuit ACE302 (4) P-ch Drive Output Current Test Circuit ACE302 VER 1.5 8 ACE302 Low Voltage Detector with Built-in Delay Circuit Typical Performance Characteristics 1. Supply current VS. Input Voltage Detector threshold=0.9V Input voltage (V) Detector threshold=3.0V Input voltage (V) Detector threshold=2.7V Input Voltage (V) Detector threshold=4.4V Input Voltage (V) 2. Detector Threshold VS. Temperature Detector threshold=0.9V Temperature (℃) Detector threshold=2.7V Temperature (℃) VER 1.5 9 ACE302 Low Voltage Detector with Built-in Delay Circuit Detector threshold=3.0V Temperature (℃) Detector threshold=4.4V Temperature (℃) 3. N-ch Driver Output Current VS. VDS ACE302X090XXX+H VDS (V) ACE302X300XXX+H VDS (V) ACE302X270XXX+H VDS (V) ACE302X440XXX+H VDS (V) VER 1.5 10 ACE302 Low Voltage Detector with Built-in Delay Circuit 4. N-ch Driver Output Current VS. Input Voltage Detector threshold=2.7V Input Voltage Vin (V) Detector threshold=3.0V Input Voltage Vin (V) 5. PCH Driver Output Current VS. Input Current Detector threshold=0.9V Input Voltage Vin (V) Detector threshold=2.7V Input Voltage Vin (V) Detector threshold=4.4V Input Voltage Vin (V) VER 1.5 11 ACE302 Low Voltage Detector with Built-in Delay Circuit Typical Applications ACE302 Note: 1. R0 is unnecessary for CMOS output products. 2. The value of R0 need to be selected in different application, Typical value is 470kΩ VER 1.5 12 ACE302 Low Voltage Detector with Built-in Delay Circuit Packing Information SOT-23-3 VER 1.5 13 ACE302 Low Voltage Detector with Built-in Delay Circuit Notes ACE does not assume any responsibility for use as critical components in life support devices or systems without the express written approval of the president and general counsel of ACE Electronics Co., LTD. As sued herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and shoes failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. ACE Technology Co., LTD. http://www.ace-ele.com/ VER 1.5 14