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ACE302
Technology Description
Low Voltage Detector with Built-in Delay Circuit
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. ACE302 is available in SOT-23-3 which is Pb free.
Features
* * * * * * * * * * *
High-precision detection Voltage 2% Detection Voltage0.9V~6.0V (in 0.1V steps) Built-in Power on Reset Delay Time circuit::Refer to Selection Guide Operating Voltage range0.7V~10V Ultra-low current consumption500nA typ. (at VDD3.0V) 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 Input Voltage Output Voltage Output Current Power Dissipation Ambient temperature Storage temperature Symbol Max -0.3~12 -0.3~12 70 150 -40~70 -40~125 Unit V V mA mW
VER 1.2
1

ACE302
Technology Packaging Type
SOT-23-3
3
Low Voltage Detector with Built-in Delay Circuit
1
2
Pin No Symbol Description 1 VSS GND Pin 2 VOUT Voltage detection output pin 3 VDD Voltage input Pin
Ordering information
Selection Guide 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 Input Voltage (Vin) Ambient Temperature (TJ) Min 0.7 -40 Typ. 25 Max 10 70 Unit V
VER 1.2
2

ACE302
Technology Block diagram
Low Voltage Detector with Built-in Delay Circuit
N channel open-drain
CMOS output
Electrical Characteristics
ACE302N090DBM+ (0.9V) Symbol -VDET ISS VDDH VDDL (Topt=25, Unless otherwise specified) Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage Conditions VDD=2.9V Reference data Unit Min. Typ. Max. 0.882 0.9 0.918 V 1 1.5 uA 10 V 0.5 V 0.01 0.05 1.0 0.05 0.50 2.0 mA mA
IOUT
Output current
Nch VDS=0.05VVDD=0.7V VDS=0.50VVDD=0.8V Pch VDS=-2.1VVDD=4.50V
ACE302N270DBM+ (2.7V) Symbol -VDET ISS VDDH VDDL
(Topt=25, Unless otherwise specified) Parameter Conditions VDD=4.7V Reference data Unit Min. Typ. Max. 2.646 2.7 2.754 V 0.5 1 uA 10 V 0.5 V 0.01 1.0 0.05 2.0 mA mA
Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage
IOUT
Output current
Nch VDS=0.05VVDD=0.7V Pch VDS=-2.1VVDD=4.50V
VER 1.2
3

ACE302
Technology
ACE302N300DBM+ (3.0V) Symbol -VDET ISS VDDH VDDL
Low Voltage Detector with Built-in Delay Circuit
(Topt=25, Unless otherwise specified) Parameter Conditions VDD=5.0V Reference data Unit Min. Typ. Max. 2.94 3.0 3.06 V 0.5 1 uA 10 V 0.5 V 0.01 1.0 0.05 2.0 mA mA
Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage
IOUT
Output current
Nch VDS=0.05VVDD=0.7V Pch VDS=-2.1VVDD=4.50V
ACE302N340DBM+ (3.4V) Symbol -VDET ISS VDDH VDDL
(Topt=25, Unless otherwise specified) Parameter Conditions VDD=5.0V Reference data Unit Min. Typ. Max. 3.332 3.4 3.468 V 0.5 1 uA 10 V 0.5 V 0.01 1.0 0.05 2.0 mA mA
Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage
IOUT
Output current
Nch VDS=0.05VVDD=0.7V Pch VDS=-2.1VVDD=4.50V
ACE302N440DBM+ (4.4V) Symbol -VDET ISS VDDH VDDL
(Topt=25, Unless otherwise specified) Parameter Conditions VDD=6.4V Reference data Unit Min. Typ. Max. 4.312 4.4 4.488 V 0.5 1 uA 10 V 0.5 V 0.01 1.5 0.05 3.0 mA mA
Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage
IOUT
Output current
Nch VDS=0.05VVDD=0.7V Pch VDS=-2.1VVDD=8.0V
VER 1.2
4

ACE302
Technology
Low Voltage Detector with Built-in Delay Circuit
Electrical Characteristics By Detector Threshold
Detector Threshold Part Number Min ACE302X090XXX+ ACE302X100XXX+ ACE302X110XXX+ ACE302X120XXX+ ACE302X130XXX+ ACE302X140XXX+ ACE302X150XXX+ ACE302X160XXX+ ACE302X170XXX+ ACE302X180XXX+ ACE302X190XXX+ ACE302X200XXX+ ACE302X210XXX+ ACE302X220XXX+ ACE302X230XXX+ ACE302X240XXX+ ACE302X250XXX+ ACE302X260XXX+ ACE302X270XXX+ ACE302X280XXX+ ACE302X290XXX+ ACE302X300XXX+ ACE302X310XXX+ ACE302X320XXX+ ACE302X330XXX+ ACE302X340XXX+ ACE302X350XXX+ ACE302X360XXX+ ACE302X370XXX+ ACE302X380XXX+ ACE302X390XXX+ ACE302X400XXX+ ACE302X410XXX+ ACE302X420XXX+ 0.882 0.980 1.078 1.176 1.274 1.372 1.470 1.568 1.666 1.764 1.862 1.960 2.058 2.156 2.254 2.352 2.450 2.548 2.646 2.744 2.842 2.940 3.038 3.136 3.234 3.332 3.430 3.528 3.626 3.724 3.822 3.920 4.018 4.116 -Vdet[V] Typ 0.900 1.000 1.100 1.200 1.300 1.400 1.500 1.600 1.700 1.800 1.900 2.000 2.100 2.200 2.300 2.400 2.500 2.600 2.700 2.800 2.900 3.000 3.100 3.200 3.300 3.400 3.500 3.600 3.700 3.800 3.900 4.000 4.100 4.200 Max 0.918 1.020 1.122 1.224 1.326 1.428 1.530 1.632 1.734 1.836 1.938 2.040 2.142 2.244 2.346 2.448 2.550 2.652 2.754 2.856 2.958 3.060 3.162 3.264 3.366 3.468 3.570 3.672 3.774 3.876 3.978 4.080 4.182 4.284 VER 1.2 5 0.5 1.0 1.0 1.5 Supply Current1 Iss1[uA] Condition Vdd= (-Vdet) +0.1V Typ 0.5 Max 1.0 Supply Current2 Iss2[uA] Condition Vdd= (-Vdet) +2V Typ Max

ACE302
Technology
ACE302X430XXX+ ACE302X440XXX+ ACE302X450XXX+ ACE302X460XXX+ ACE302X470XXX+ ACE302X480XXX+ ACE302X490XXX+ ACE302X500XXX+ ACE302X510XXX+ ACE302X520XXX+ ACE302X530XXX+ ACE302X540XXX+ ACE302X550XXX+ ACE302X560XXX+ ACE302X570XXX+ ACE302X580XXX+ ACE302X590XXX+ ACE302X600XXX+ 4.214 4.312 4.410 4.508 4.606 4.704 4.802 4.900 4.998 5.096 5.194 5.292 5.390 5.488 5.586 5.684 5.782 5.880 4.300 4.400 4.500 4.600 4.700 4.800 4.900 5.000 5.100 5.200 5.300 5.400 5.500 5.600 5.700 5.800 5.900 6.000
Low Voltage Detector with Built-in Delay Circuit
4.386 4.488 4.590 4.692 4.794 4.896 4.998 5.100 5.202 5.304 5.406 5.508 5.610 5.712 5.814 5.916 6.018 6.120 Minimum Operating Voltage VDDL[V] Min. Typ. Typ. 0.5 Max. 0.7
Output Current1 Iout1[mA] Condition Min. Typ.
Output Current2 Iout2[mA] Condition
Detector Threshold Temperature Coefficient -VDET/Tppm/C Condition -40 Topt 85 Typ. 100
VDD=0.85V 0.1 0.5 NCH, 0.01 0.05 NCH,VDS=0.5V VDD=1.0V 0.2 1.0 VDS=0.05V,VDD=0.7V VDD=1.5V 1.0 2.0
Electrical Characteristics By Output Delay Time
Part Number ACE302XXXXAXX+ ACE302XXXXBXX+ ACE302XXXXCXX+ ACE302XXXXDXX+ ACE302XXXXEXX+ ACE302XXXXFXX+ ACE302XXXXGXX+ Test Condition 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
VDD=1.0V to Vdet+1.0V
ms
VER 1.2
6

ACE302
Technology Function description
Low Voltage Detector with Built-in Delay Circuit
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)
No I II III IV V
Operation status VDD>Vdet VDD drops below Vdet VDD drops further below VDDL VDD rises above VDDL VDD rises above Vdet
Output status Output voltage is equal to the supply voltage Output voltage equals to GND level Output voltage is undefined Output voltage equals to GND level Output voltage equals to supply voltage after Tdelay
VER 1.2 7

ACE302
Technology Typical Circuits
(1) Supply current test circuit
Low Voltage Detector with Built-in Delay Circuit
(2) Detector threshold test circuit
ACE302
ACE302
(3) NCHply current test circuit
(2) Detector threshold test circuit
AC302
ACE302
Typical Performance Characteristics
1. Supply current VS. Input Voltage
Detector threshold=0.9V Detector threshold=2.7V
Input voltage (V)
Input Voltage (V)
VER 1.2
8

ACE302
Technology
Detector threshold=3.0V
Low Voltage Detector with Built-in Delay Circuit
Detector threshold=4.4V
Input voltage (V)
Input Voltage (V)
2. Detector Threshold VS. Temperature
Detector threshold=0.9V Detector threshold=2.7V
Temperature () Detector threshold=3.0V
Temperature () Detector threshold=4.4V
Temperature () Temperature ()
VER 1.2
9

ACE302
Technology
3. Nch Driver Output Current VS. VDS
ACE302X090XXX+
Low Voltage Detector with Built-in Delay Circuit
ACE302X270XXX+
VDS (V) ACE302X300XXX+
VDS (V) ACE302X440XXX+
VDS (V)
VDS (V)
4. Nch Driver Output Current VS. Input Voltage
Detector threshold=2.7V Detector threshold=3.0V
Input Voltage Vin (V)
Input Voltage Vin (V)
VER 1.2
10

ACE302
Technology
5. PCH Driver Output Current VS. Input Current
Detector threshold=0.9V
Low Voltage Detector with Built-in Delay Circuit
Detector threshold=2.7V
Input Voltage Vin (V) Detector threshold=4.4V
Input Voltage Vin (V)
Input Voltage Vin (V)
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 470k
VER 1.2
11

ACE302
Technology Packing Information
SOT-23-3
Low Voltage Detector with Built-in Delay Circuit
VER 1.2
12

ACE302
Technology
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 1.2
13

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