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BL8509
Low Voltage Detector with Built-in Delay Circuit Outline:
BL8509 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. BL8509 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. BL8509 is available in SOT-23 which is Pb free.
Features
High-precision detection Voltage Detection Voltage 2% 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 500nA typ. (at
Ultra-low current consumption 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
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BL8509
Selection Guide 8509- XXX X X XX Pin Alignment
Package type RM SOT-23-3 Output type N Nch C CMOS 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)
Pin Description:
PIN Number
1 2 3
PIN Name
VSS VOUT VDD
Function
GND Pin Voltage detection output Pin Voltage input Pin
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BL8509
Block diagram:
N channel open-drain Absolute Maximum Ratings
CMOS output
Input Voltage range -------------------------------------------------------------------------------------0.3V~12V Output Voltage range-----------------------------------------------------------------------------------0.3V~12V Maximum Output current -----------------------------------------------------------------------------70mA Maximum power dissipation -------------------------------------------------------------------------150mW Ambient temperature ---------------------------------------------------------------------------------- -40~+70 C Storage temperature----------------------------------------------------------------------------------- -40~125 C Lead temperature and time --------------------------------------------------------------------------260 C,10S
Recommended Work Conditions
Item Input Voltage range Ambient temperature Min 0.7 -40 Recommended 25 Max 10 70 unit V
Electrical Characteristics
BL8509-090DNRM Symbol -VDET ISS VDDH VDDL 0.9V Conditions VDD=2.9V (Topt 25 ,Unless otherwise specified.) Unit V uA V V mA mA
Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage
Reference data Min. Typ. Max. 0.882 0.9 0.918 1 1.5 10 0.5
IOUT
Output current
Nch VDS=0.05V VDD=0.7V VDS=0.50V VDD=0.8V Pch VDS=-2.1V VDD=4.50V
0.01 0.05 1.0
0.05 0.50 2.0
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BL8509
BL8509-270DNRM Symbol -VDET ISS VDDH VDDL 2.7V Conditions VDD=4.7V (Topt 25 ,Unless otherwise specified.) Reference data Typ. Max. 2.7 2.754 0.5 1 10 0.5 Nch VDS=0.05V VDD=0.70V Pch VDS=-2.1V VDD=4.50V (Topt Conditions VDD=5.0V Unit V uA V V mA 0.01 0.05 mA 1.0 25 2.0 Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage
Min. 2.646
IOUT
Output current
BL8509-300DNRM Symbol -VDET ISS VDDH VDDL
3.0V
,Unless otherwise specified.) Reference data Typ. Max. 3.0 3.06 0.5 1 10 0.5 Unit V uA V V mA
Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage
Min. 2.94
IOUT
Output current
Nch VDS=0.05V Pch VDS=-2.1V
VDD=0.7V VDD=4.50V (Topt
0.01 1.0 25
0.05 2.0 mA
BL8509-340DNRM Symbol -VDET ISS VDDH VDDL
3.4V Conditions VDD=5.0V
,Unless otherwise specified.) Reference data Typ. Max. 3.4 3.468 0.5 1 10 0.5 Unit V uA V V mA
Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage
Min. 3.332
IOUT
Output current
Nch VDS=0.05V Pch VDS=-2.1V
VDD=0.7V VDD=4.50V
0.01 1.0
0.05 2.0 mA
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BL8509
BL8509-440DNRM Symbol -VDET ISS VDDH VDDL 4.4V Conditions VDD=6.4V (Topt 25 ,Unless otherwise specified.) Reference data Typ. Max. 4.4 4.488 0.5 1 10 0.5 Nch VDS=0.05V Pch VDS=-2.1V Unit V uA V V mA 0.01 1.5 0.05 3.0 mA
Parameter Detector Threshold Current consumption Maximum operating voltage Minimum Operating voltage
Min. 4.312
IOUT
Output current
VDD=0.7V VDD=8.0V
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BL8509
Electrical Characteristics By Detector Threshold
Detector Threshold Part Number Min. BL8509-0900XXXXX BL8509-1000XXXXX BL8509-1100XXXXX BL8509-1200XXXXX BL8509-1300XXXXX BL8509-1400XXXXX BL8509-1500XXXXX BL8509-1600XXXXX BL8509-170XXXX BL8509-180XXXX BL8509-190XXXX BL8509-200XXXX BL8509-210XXXX BL8509-220XXXX BL8509-230XXXX BL8509-240XXXX BL8509-250XXXX BL8509-260XXXX BL8509-270XXXX BL8509-280XXXX BL8509-290XXXX BL8509-300XXXX BL8509-310XXXX BL8509-320XXXX BL8509-330XXXX BL8509-340XXXX BL8509-350XXXX BL8509-360XXXX BL8509-370XXXX BL8509-380XXXX BL8509-390XXXX BL8509-400XXXX BL8509-410XXXX BL8509-420XXXX BL8509-430XXXX BL8509-440XXXX BL8509-450XXXX BL8509-460XXXX BL8509-470XXXX BL8509-480XXXX BL8509-490XXXX BL8509-500XXXX BL8509-510XXXX BL8509-520XXXX BL8509-530XXXX BL8509-540XXXX BL8509-550XXXX BL8509-560XXXX BL8509-570XXXX BL8509-580XXXX BL8509-590XXXX BL8509-600XXXX 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 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 -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 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 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 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 0.5 1.0 Vdd= (-Vdet) +0.1V 0.5 1.0 Vdd= (-Vdet) +2V 1.0 1.5 Condition Supply Current1 Iss1[uA] Typ. Max. Condition Supply Current2 Iss2[uA] Typ. Max.
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Output Current1 Iout1[mA] Condition Min. Typ. Condition Output Current2 Iout2[mA] Min. Vdd=0.8 0.1 5V Typ. 0.5 Minimum Detector Threshold Operating Voltage Temperature Coefficient VDDL[V] -VDET/ Tppm/C Typ. Max. Condition Typ.
Vdd=1.0V
0.2
1.0
NCH, VDS=0.05V NCH, 0.01 0.05 , VDS=0.5V VDD=0.7V VDD=1.5V
0.5
0.7
1.0
2.0
-40 C Topt 85 C
100
Electrical Characteristics by Output Delay Time
Part Number
8509-xxxAxxx 8509-xxxBxxx 8509-xxxCxxx 8509-xxxDxxx 8509-xxxExxx 8509-xxxFxxx 8509-xxxGxxx
Test Condition
Output Delay Time Min. Typ. Max.
45 90 135 180 225 270 360 50 100 150 200 250 300 400 55 110 165 220 275 330 440
Unit
VDD=1.0V to Vdet+1.0V
ms
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Function description:
Delay Comparator
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)
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BL8509
Detector Treshold(Vdet) =Release Voltage Minimum Operating Voltage
Supply Voltage
Output Voltage (OUT)
Tdelay
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
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BL8509
Test circuits
1 Supply current test circuit 2 Detector threshold test circuit
BL8509 BL8509
3
NCH Drive Output Current Test Circuit
4
PCH Drive Output Current Test Circuit
BL8509 BL8509
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Typical Performance Characteristics
1) Supply current VS. Input voltage
Detector threshold= 0.9V 1.E-05 Supply current (A) Supply current(A) 1.E-05 Detector threshold=2.7V
1.E-06 -40C 1.E-07 25C 70C 1.E-08 0 1 2 3 4 5 6 Input voltage (V)
1.E-06
1.E-07
-40C 25C 70C
1.E-08 0 1 2 3 4 5 6 Input voltage (V)
Detector threshold=3.0V 1.E-05 Supply current (A) Supply current(A) 1.E-05
Detector threshold=4.4V
1.E-06
1.E-06
1.E-07
-40C 25C 70C
1.E-07
-40C 25C 70C
1.E-08 0 1 2 3 4 5 6 Input voltage (V)
1.E-08 0 1 2 3 4 5 6 Input voltage (V)
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2) Detector Threshold VS. Temperature
Detector threshold= 0.9V 0.95 0.94 0.93 0.92 0.91 0.90 0.89 0.88 0.87 0.86 0.85 -50 -30 -10 10 30 50 70 90 Temperature (C) 2.78 Detector threshold(V) 2.74 2.70 2.66 2.62 2.58 2.54 -50 -30 -10 10 30 50 70 90 Temperature(C)
Detector threshold=2.7V
Detector threshold (V)
Detector threshold=3.0V
3.04 Detector threshold(V)
Detector threshold=4.4V 4.50 4.48 Detector threshold(V) 4.46 4.44 4.42 4.40 4.38 4.36 4.34 4.32 4.30 -50 -30 -10 10 30 50 70 90 Temperature(C)
3.02 3.00 2.98 2.96 2.94 2.92 2.90 -50 -30 -10 10 30 50 70 90 Temperature(C)
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BL8509
3 Nch Driver Output Current VS. VDS
BL8509-090xxx 8.00E-04 7.00E-04 Output current A) 6.00E-04 5.00E-04 4.00E-04 3.00E-04 2.00E-04 1.00E-04 0.00E+00 0.00 0.20 0.40 VDS (V) VDD=0.7V VDD=0.8V 0.60 0.80 Output current A) 1.20E-02 1.00E-02 8.00E-03 6.00E-03 4.00E-03 2.00E-03 0.00E+00 0.00
BL8509-270xxx
VDD=1.0V VDD=2.0V 0.50 1.00 1.50 2.00 2.50
VDS (V)
BL8509-300xxx 1.20E-02 1.00E-02 Output current A) 8.00E-03 6.00E-03 4.00E-03 2.00E-03 0.00E+00 0.00 VDD=1.0V VDD=2.0V 0.50 1.00 1.50 2.00 2.50 Output current A) 2.50E-02 2.00E-02 1.50E-02 1.00E-02 5.00E-03 0.00E+00 0.00
BL8509-440xxx
VDD=1.0V VDD=2.0V VDD=3.0V 1.00 2.00 VDS (V) 3.00 4.00
VDS (V)
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BL8509
4 NCH Driver Output Current vs. Input Voltage
Detector threshold=2.7V
1.E-02 Output Current Iout (A) -40C 25C 8.E-03 75C 1.E-02 Output Current Iout (A)
Detector threshold=3.0V
-40C 25C 8.E-03 75C
4.E-03
4.E-03
0.E+00 0 1 2 3 Input Voltage Vin (V)
0.E+00 0 1 2 3 Input Voltage Vin (V)
5
PCH Driver Output Current vs. Input Current
Detector threshold=0.9V Detector threshold=2.7V
20.0 Output Current Iout mA VDS=0.5V VDS=0.7V 15.0 10.0 5.0 0.0 0 2 4 Input Voltage Vin V 6 8 0 1 2 3 4 V 5 6 7 Input Voltage Vin VDS=0.5V VDS=1.0V VDS=1.5V VDS=2.0V
8.0 Output Current Iout(mA) 6.0 4.0 2.0 0.0
Detector threshold=4.4V
25.0 Output Current Iout mA 20.0 15.0 10.0 5.0 0.0 0 2 4 6 V 8 10 Input Voltage Vin VDS=0.5V VDS=1.0V VDS=1.5V VDS=2.0V
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Typical applications 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
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BL8509
Package Outline SOT-23-3:
Package SOT-23-3 Devices per reel 3000 Unit mm
Package dimension
Taping Specification
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Taping reel dimension
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