BELLING BL8506-XXNRM Battery back-up circuit Datasheet

BL8506
High-Precision Low Voltage Detector
DESCRIPTION
FEATURES
BL8506 is a series of high precision voltage
detector with ultra low current consumption
(500nA typ. at Vdd=3.0V). It can work at very
low voltage, which makes it perfect for
system reset.


High-precision detection Voltage： 2%
Detection Voltage：0.9V~6.0V (in 0.1V
steps)
Precise hysteresis：4% typ.
Operating Voltage range：0.7V~10V
Ultra-low current consumption：500nA
typ. (at VDD＝3.0V)\
Two Output Forms ：CMOS(Active Low)
and N-channel open-drain(Active Low)



BL8506 is composed of high precision
voltage reference, comparator, output driver
and resistor array. Internally preset detect
voltage has a low temperature drift and
requires no external trimming.

APPLICATIONS
Two type of output, CMOS and N-channel
open-drain are available.

BL8506 is available in SOT-89-3, SOT-23-3,
TO92, SOT23-5 packages which are Pb free.
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




TYPICAL APPLICATION
ELECTRICAL CHARACTERISTICS
Detector threshold= 0.9V
1.E-05
Supply current(A)
BL8506
Note：


-40ºC
1.E-07
25ºC
70ºC
1.E-08
R0 is unnecessary for CMOS output
products.,
The value of R0 need to be selected in
different application, Typical value is 470k
Ω
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1.E-06
0
1
2
3
4
Input voltage (V)
1
5
6
BL8506
High-Precision Low Voltage Detector
Selection Guide：
Pin Assignment：
BL8506-XX X XX
Package Type：
RM： SOT-23-3
RN： SOT-23-5
RO： SOT23
SM： SOT-89-3
T： TO-92
（Default、Pb Free）
Output Type：
N：Nch Open-drain
C：CMOS
Detector Voltage：
09……0.9V
30……3.0V
……
50……5.0V
60……6.0V
Pin Description:
PIN Number
SOT-89-3
1
2
3
－
－
TO-92
3
1
2
－
－
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SOT-23-3/SOT23
1
3
2
－
－
SOT-23-5
1
2
3
4
5
2
PIN Name
Function
VOUT
VDD
VSS
NC
NC
Voltage detection output Pin
Voltage input Pin
GND Pin
No connection
No connection
BL8506
Product Classification:
Product Name
BL8506-XXNRM
BL8506-XXNRN
BL8506-XXNRO
BL8506-XXNSM
BL8506-XXNT
BL8506-XXCRM
BL8506-XXCRN
BL8506-XXCRO
BL8506-XXCSM
BL8506-XXCT
Detector Voltage
XX V
XX V
XX V
XX V
XX V
XX V
XX V
XX V
XX V
XX V
Output Type
Nch Open-Drain
Nch Open-Drain
Nch Open-Drain
Nch Open-Drain
Nch Open-Drain
CMOS
CMOS
CMOS
CMOS
CMOS
Package
SOT-23-3
SOT-23-5
SOT-23
SOT-89-3
TO-92
SOT-23-3
SOT-23-5
SOT-23
SOT-89-3
TO-92
Product Mark Information:
Product NO.
BL8506-09CSM
BL8506-20CT
BL8506-27CSM
BL8506-30CT
……
BL8506-09NRM
BL8506-11NRO
BL8506-21NRN
BL8506-27CRM
BL8506-30CRM
……
SOT-89-3
TO-92
Mark
8506
09CXX
8506
20CXX
8506
27CXX
8506
30CXX
……
N609
N611
N621
C627
C630
……
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Example：
BL8506-30NSM
8506
N30XX
XX:Lot No.
3
SOT-23-5
SOT-23-3/SOT23
Example：
BL8506-30CRM
C630
BL8506
ABSOLUTE MAXIMUM RATING
Parameter
Input Voltage
Output Voltage range
Maximum Output current
Ambient Temperature(Ta)
Power Dissipation
Value
-0.3V-10V
-0.3V-12V
70mA
-40C -85C
250mW
250mW
500mW
600mW
-40C -150C
260C,10S
SOT-23-3
SOT-23-5
SOT-89-3
TO-92
Storage Temperature(Ts)
Lead Temperature & Time
Note:
Exceed these limits to damage to the device.
Exposure to absolute maximum rating conditions may affect device reliability
RECOMMENDED WORK CONDITIONS
Item
Min
Input Voltage Range
Ambient Temperature
0.7
-40
Recommended
Max.
Unit
25
10
85
V
C
ELECTRICAL CHARACTERISTICS
BL8506CXXTR09C/N（0.9V）
Symbol
-VDET
VHYS
ISS
VDDH
VDDL
IOUT
TPLH
Parameter
Detector Threshold
Detector Threshold
Hysteresis
Current consumption
Maximum operating
voltage
Minimum Operating
voltage
Output current
(Topt＝25℃,Unless otherwise specified.)
Reference data
Min.
Typ.
Max.
0.882
0.9
0.918
Conditions
0.018
VDD=2.9V
Nch
VDS=0.05V，VDD=0.7V
VDS=0.50V，VDD=0.8V
Pch
VDS=-2.1V，VDD=4.50V
Output Delay Time
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V
0.036
0.054
V
1
2.5
uA
10
V
0.5
V
0.01
0.05
0.05
0.50
mA
1.0
2.0
mA
20
4
Unit
uS
BL8506
BL8506CXXTR25C/N（2.5V）
Symbol
-VDET
VHYS
ISS
VDDH
VDDL
IOUT
TPLH
Parameter
Detector Threshold
Detector Threshold
Hysteresis
Current consumption
Maximum operating
voltage
Minimum Operating
voltage
Output current
(Topt＝25℃,Unless otherwise specified.)
Reference data
Min.
Typ.
Max.
2.450
2.5
2.550
Conditions
0.050
VDD=4.5V
-VDET
VHYS
ISS
VDDH
VDDL
IOUT
TPLH
-VDET
VHYS
ISS
VDDH
VDDL
IOUT
1
2.5
uA
10
V
0.01
0.05
1.0
2.0
Output Delay Time
Parameter
Detector Threshold
Detector Threshold
Hysteresis
Current consumption
Maximum operating
voltage
Minimum Operating
voltage
Output current
(Topt＝25℃,Unless otherwise specified.)
Reference data
Min.
Typ.
Max.
2.646
2.7
2.754
Conditions
0.054
VDD=4.7V
Detector Threshold
Detector Threshold
Hysteresis
Current consumption
Maximum operating
voltage
Minimum Operating
voltage
Output current
V
V
1
2.5
uA
10
V
V
mA
0.01
0.05
1.0
2.0
mA
20
(Topt＝25℃,Unless otherwise specified.)
Reference data
Min.
Typ.
Max.
2.94
3.0
3.06
Conditions
0.060
VDD=5.0V
Nch
VDS=0.05V，VDD=0.7V
Unit
V
0.18
V
1
2.5
uA
10
V
V
mA
0.01
0.05
1.0
2.0
mA
20
5
uS
0.12
0.5
Output Delay Time
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Unit
0.162
0.5
Nch
VDS=0.05V，
VDD=0.70V
Pch
VDS=-2.1V，
VDD=4.50V
uS
0.108
Output Delay Time
Parameter
V
20
Pch
VDS=-2.1V，VDD=4.50V
TPLH
V
mA
BL8506CXXTR30C/N（3.0V）
Symbol
0.150
mA
BL8506CXXTR27C/N（2.7V）
Symbol
V
0.100
0.5
Nch
VDS=0.05V，
VDD=0.70V
Pch
VDS=-2.1V，
VDD=4.50V
Unit
uS
BL8506
BL8506CXXTR34C/N（3.4V）
Symbol
-VDET
VHYS
ISS
VDDH
VDDL
IOUT
Parameter
Detector Threshold
Detector Threshold
Hysteresis
Current consumption
Maximum operating
voltage
Minimum Operating
voltage
Output current
(Topt＝25℃,Unless otherwise specified.)
Reference data
Min.
Typ.
Max.
3.332
3.4
3.468
Conditions
0.068
VDD=5.0V
Pch
VDS=-2.1V，VDD=4.50V
TPLH
Symbol
-VDET
VHYS
ISS
VDDH
VDDL
IOUT
V
1
2.5
uA
10
V
Parameter
Detector Threshold
Detector Threshold
Hysteresis
Current consumption
Maximum operating
voltage
Minimum Operating
voltage
Output current
mA
0.01
0.05
1.0
2.0
mA
(Topt＝25℃,Unless otherwise specified.)
Reference data
Min.
Typ.
Max.
4.312
4.4
4.488
Conditions
0.088
VDD=6.4V
Nch
VDS=0.05V，VDD=0.7V
Unit
V
0.264
V
1
2.5
uA
10
V
V
mA
0.01
0.05
1.5
3.0
mA
20
6
uS
0.176
0.5
Output Delay Time
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V
20
Pch
VDS=-2.1V，VDD=8.0V
TPLH
0.204
Output Delay Time
BL8506CXXTR44C/N（4.4V）
V
0.136
0.5
Nch
VDS=0.05V，VDD=0.7V
Unit
uS
BL8506
Electrical Characteristics By Detector Threshold
Part Number
Detector Threshold
-Vdet[V]
Min.
Typ.
Max.
Detector Threshold Hysteresis
Vhys[V]
Min.
Typ.
Max.
BL8506CXXTR09C/N
0.882
0.900
0.918
0.018
0.036
0.054
BL8506CXXTR10C/N
0.980
1.000
1.020
0.020
0.040
0.060
BL8506CXXTR11C/N
1.078
1.100
1.122
0.022
0.044
0.066
BL8506CXXTR12C/N
1.176
1.200
1.224
0.024
0.048
0.072
BL8506CXXTR13C/N
1.274
1.300
1.326
0.026
0.052
0.078
BL8506CXXTR14C/N
1.372
1.400
1.428
0.028
0.056
0.084
BL8506CXXTR15C/N
1.470
1.500
1.530
0.030
0.060
0.090
BL8506CXXTR16C/N
1.568
1.600
1.632
0.032
0.064
0.096
BL8506CXXTR17C/N
1.666
1.700
1.734
0.034
0.068
0.102
BL8506CXXTR18C/N
1.764
1.800
1.836
0.036
0.072
0.108
BL8506CXXTR19C/N
1.862
1.900
1.938
0.038
0.076
0.114
BL8506CXXTR20C/N
1.960
2.000
2.040
0.040
0.080
0.120
BL8506CXXTR21C/N
2.058
2.100
2.142
0.042
0.084
0.126
BL8506CXXTR22C/N
2.156
2.200
2.244
0.044
0.088
0.132
BL8506CXXTR23C/N
2.254
2.300
2.346
0.046
0.092
0.138
BL8506CXXTR24C/N
2.352
2.400
2.448
0.048
0.096
0.144
BL8506CXXTR25C/N
2.450
2.500
2.550
0.050
0.100
0.150
BL8506CXXTR26C/N
2.548
2.600
2.652
0.052
0.104
0.156
BL8506CXXTR27C/N
2.646
2.700
2.754
0.054
0.108
0.162
BL8506CXXTR28C/N
2.744
2.800
2.856
0.056
0.112
0.168
BL8506CXXTR29C/N
2.842
2.900
2.958
0.058
0.116
0.174
BL8506CXXTR30C/N
2.940
3.000
3.060
0.060
0.120
0.180
BL8506CXXTR31C/N
3.038
3.100
3.162
0.062
0.124
0.186
BL8506CXXTR32C/N
3.136
3.200
3.264
0.064
0.128
0.192
BL8506CXXTR33C/N
3.234
3.300
3.366
0.066
0.132
0.198
BL8506CXXTR34C/N
3.332
3.400
3.468
0.068
0.136
0.204
BL8506CXXTR35C/N
3.430
3.500
3.570
0.070
0.140
0.210
BL8506CXXTR36C/N
3.528
3.600
3.672
0.072
0.144
0.216
BL8506CXXTR37C/N
3.626
3.700
3.774
0.074
0.148
0.222
BL8506CXXTR38C/N
3.724
3.800
3.876
0.076
0.152
0.228
BL8506CXXTR39C/N
3.822
3.900
3.978
0.078
0.156
0.234
BL8506CXXTR40C/N
3.920
4.000
4.080
0.080
0.160
0.240
BL8506CXXTR41C/N
4.018
4.100
4.182
0.082
0.164
0.246
BL8506CXXTR42C/N
4.116
4.200
4.284
0.084
0.168
0.252
BL8506CXXTR43C/N
4.214
4.300
4.386
0.086
0.172
0.258
BL8506CXXTR44C/N
4.312
4.400
4.488
0.088
0.176
0.264
BL8506CXXTR45C/N
4.410
4.500
4.590
0.090
0.180
0.270
BL8506CXXTR46C/N
4.508
4.600
4.692
0.092
0.184
0.276
BL8506CXXTR47C/N
4.606
4.700
4.794
0.094
0.188
0.282
BL8506CXXTR48C/N
4.704
4.800
4.896
0.096
0.192
0.288
BL8506CXXTR49C/N
4.802
4.900
4.998
0.098
0.196
0.294
BL8506CXXTR50C/N
4.900
5.000
5.100
0.100
0.200
0.300
BL8506CXXTR51C/N
4.998
5.100
5.202
0.102
0.204
0.306
BL8506CXXTR52C/N
5.096
5.200
5.304
0.104
0.208
0.312
BL8506CXXTR53C/N
5.194
5.300
5.406
0.106
0.212
0.318
BL8506CXXTR54C/N
5.292
5.400
5.508
0.108
0.216
0.324
BL8506CXXTR55C/N
5.390
5.500
5.610
0.110
0.220
0.330
BL8506CXXTR56C/N
5.488
5.600
5.712
0.112
0.224
0.336
BL8506CXXTR57C/N
5.586
5.700
5.814
0.114
0.228
0.342
BL8506CXXTR58C/N
5.684
5.800
5.916
0.116
0.232
0.348
BL8506CXXTR59C/N
5.782
5.900
6.018
0.118
0.236
0.354
BL8506CXXTR60C/N
5.880
6.000
6.120
0.120
0.240
0.360
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7
Supply Current1
Iss1[uA]
Condition
Typ.
Max.
Vdd=
(-Vdet)
+0.1V
0.5
2.5
Supply Current2
Iss2[uA]
Condition
Typ.
Max.
1.0
2.5
0.5
2.5
Vdd=
(-Vdet)
+2V
BL8506
Output Current1
Iout1[mA]
Condition Min. Typ.
Output Current2
Iout2[mA]
Condition
NCH,
VDS=0.05V
NCH,
0.01 0.05
,
VDS=0.5V
VDD=0.7V
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Min.
Typ.
Vdd=0.85V 0.1
0.5
Vdd=1.0V
1.0
0.2
Output
Delay
Time
TPLH[us]
Max.
20
VDD=1.5V
1.0
8
2.0
Minimum
Operating
Voltage
VDDL[V]
Typ. Max.
0.5
Detector Threshold
Temperature
Coefficient
-VDET
Condition
0.7 -40C -85C
Typ.
BL8506
BLOCK DIAGRAM
N Channel Open Drain
CMOS Output
FUNCTION DESCRIPTION
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 Rb and Rc, is applied
to the positive input of the comparator. Output of the comparator controls a pair of NMOS
and PMOS switches, generating the hysteresis. Output of the comparator passes a series
of buffer to drive the output CMOS pair.
+ VDET，- VDET，VHYS can be calculated as follows:
- VDET =VREF*(1+Ra/(Rb+Rc))
+ VDET =VREF*(1+(Ra+Rd)/Rb)= VREF *(1+(Ra+Rc)/Rb)
VHYS=+ VDET -(- VDET)= VREF*(Ra+Rb+Rc)(1/Rb-1/(Rb+Rc))
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9
BL8506
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
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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，VHYS=(+
VDET)-(- VDET)
10
BL8506
TEST CIRCUITS
（1）Supply current test circuit
（2）Detector threshold test circuit
BL8506
BL8506
（3）NCH Drive Output Current Test Circuit
（4）PCH Drive Output Current Test Circuit
BL8506
BL8506
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11
BL8506
TYPICAL PERFORMANCE CHARACTERISTICS
1) Output voltage VS. Input voltage
Detector threshold= 0.9V
（-40°C）
Vin(high to
low)
Vin(low to
high)
1.4
Output voltage (V)
1.2
1
0.8
0.6
0.4
0.2
1.2
1.0
0.8
0.6
0.4
0.9
1.1
1.3
1.5
Input voltage (V)
Output voltage (V)
Vin(low
to high)
2.0
0.7
0.9
1.1
1.3
1.5
1.0
0.5
2.5
2.7
2.9
2.0
2.5
Vin(low to
high)
2.0
1.5
1.0
0.5
1.0
0.5
0.0
2.5
2.7
2.9
2.8
3.0
3.2
Input voltage (V)
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Vin(high
to low)
2.5
Vin(low to
high)
2.0
1.5
1.0
0.5
3.1
2.3
Vin(hi
gh to
low)
3.4
2.9
3.1
Vin(hig
h to
low)
3.0
Vin(lo
w to
high)
2.0
2.7
Detector threshold=3.0V（70°C）
Detector threshold=3.0V（25°C）
2.5
2.5
Input voltage (V)
1.5
1.0
0.5
0.0
2.6
1.5
0.0
3.0
1.5
1.3
3.0
Vin(high
to low)
Input voltage (V)
Output voltage (V)
2.5
1.1
3.0
3.1
Vin(h
igh to
low)
Vin(l
ow to
high)
0.9
Detector threshold=2.7V（70°C）
2.3
Detector threshold=3.0V（-40°C）
0.7
Detector threshold=2.7V（25°C）
Input voltage (V)
3.0
0.4
Input voltage (V)
0.0
0.0
2.3
0.6
0.5
1.5
Output voltage (V)
Output voltage (V)
Vin(high
to low)
2.5
0.8
Input voltage (V)
Detector threshold=2.7V（-40°C）
3.0
1.0
0.0
0.5
Output voltage (V)
0.7
1.2
0.2
0.0
0.5
Vin(high to
low)
Vin(low to
high)
1.4
0.2
0
Output voltage (V)
Detector threshold= 0.9V
（70°C）
Output voltage (V)
Vin(high to
low)
Vin(low to
high)
1.4
Output voltage (V)
Detector threshold= 0.9V
（25°C）
2.5
Vin(low
to
high)
2.0
1.5
1.0
0.5
0.0
2.6
2.8
3.0
3.2
Input voltage (V)
12
3.4
2.6
2.8
3.0
3.2
Input voltage (V)
3.4
BL8506
1.0
Output voltage (V)
2.0
Vin(hi
gh to
low)
4.0
Output voltage (V)
3.0
Detector threshold=4.4V（70°C）
Detector threshold=4.4V（25°C）
Vin(hi
gh to
low)
Vin(lo
w to
high)
4.0
Vin(lo
w to
high)
3.0
2.0
1.0
0.0
0.0
4.0
4.2
4.4
4.6
4.8
Vin(hi
gh to
low)
4.0
Vin(lo
w to
high)
3.0
2.0
1.0
0.0
4.0
Input voltage (V)
4.2
4.4
4.6
4.8
4.0
Input voltage(V)
4.2
4.4
4.6
Input voltage (V)
2) Supply current VS. Input voltage
Detector threshold= 0.9V
Detector threshold=2.7V
1.E-05
Supply current (A)
Supply current(A)
1.E-05
1.E-06
-40ºC
1.E-07
25ºC
70ºC
1.E-06
-40ºC
1.E-07
25ºC
70ºC
1.E-08
1.E-08
0
1
2
3
4
5
6
0
1
2
3
4
Input voltage (V)
Input voltage (V)
Detector threshold=3.0V
Detector threshold=4.4V
1.E-05
5
6
1.E-05
Supply current (A)
Supply current(A)
Output voltage (V)
Detector threshold=4.4V（-40°C）
1.E-06
1.E-07
-40ºC
25ºC
1.E-06
1.E-07
-40ºC
25ºC
70ºC
70ºC
1.E-08
1.E-08
0
1
2
3
4
5
6
0
Input voltage (V)
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1
2
3
4
Input voltage (V)
13
5
6
4.8
BL8506
3) Detector Threshold Hysteresis VS. Temperature
Detector threshold=2.7V
0.95
0.94
0.93
0.92
0.91
0.90
0.89
0.88
0.87
0.86
0.85
2.78
Detector threshold(V)
Detector threshold (V)
Detector threshold= 0.9V
2.74
2.70
2.66
2.62
2.58
2.54
-50
-30
-10
10
30
50
70
90
-50
-30
-10
Temperature (°C)
30
50
70
90
50
70
90
Detector threshold=4.4V
Detector threshold=3.0V
4.50
3.04
4.48
3.02
Detector threshold(V)
Detector threshold(V)
10
Temperature(°C)
3.00
2.98
2.96
2.94
2.92
4.46
4.44
4.42
4.40
4.38
4.36
4.34
4.32
2.90
-50
-30
-10
10
30
50
70
90
4.30
-50
Temperature(°C)
-30
-10
10
30
Temperature(°C)
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14
BL8506
4）Nch Driver Output Current VS. VDS
BL8506-27CXX
BL8506-27CXX
BL8506-09CXX
BL8506-09CXX
1.20E-02
8.00E-04
1.00E-02
Output current（A)
Output current（A)
7.00E-04
6.00E-04
5.00E-04
4.00E-04
3.00E-04
2.00E-04
VDD=0.7V
VDD=0.8V
1.00E-04
0.00E+00
0.00
0.20
0.40
0.60
8.00E-03
6.00E-03
4.00E-03
2.00E-03
0.00E+00
0.00
0.80
VDD=1.0V
VDD=2.0V
0.50
VDS (V)
2.00
2.50
BL8506-44CXX
BL8506-44CXX
1.20E-02
2.50E-02
Output current（A)
1.00E-02
Output current（A)
1.50
VDS (V)
BL8506-30CXX
BL8506-30CXX
8.00E-03
6.00E-03
4.00E-03
0.50
1.00
1.50
2.00
1.50E-02
1.00E-02
0.00E+00
0.00
2.50
VDS (V)
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2.00E-02
VDD=1.0V
VDD=2.0V
VDD=3.0V
5.00E-03
VDD=1.0V
VDD=2.0V
2.00E-03
0.00E+00
0.00
1.00
1.00
2.00
VDS (V)
15
3.00
4.00
BL8506
5）NCH Driver Output Current vs. Input Voltage
Detector threshold=2.7V
1.E-02
-40ºC
Output Current Iout (A)
Output Current Iout (A)
1.E-02
Detector threshold=3.0V
25ºC
75ºC
8.E-03
4.E-03
0.E+00
-40ºC
25ºC
75ºC
8.E-03
4.E-03
0.E+00
0
1
2
3
0
1
Input Voltage Vin (V)
2
3
Input Voltage Vin (V)
6）PCH Driver Output Current vs. Input Current
Detector threshold=2.7V
Detector threshold=0.9V
20.0
Output Current Iout（mA）
Output Current Iout(mA)
8.0
VDS=0.5V
VDS=0.7V
6.0
4.0
2.0
0.0
15.0
10.0
5.0
0.0
0
2
4
6
8
0
Input Voltage Vin（V）
25.0
VDS=0.5V
VDS=1.0V
VDS=1.5V
VDS=2.0V
20.0
15.0
10.0
5.0
0.0
0
2
4
6
8
10
Input Voltage Vin（V）
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1
2
3
4
5
Input Voltage Vin（V）
Detector threshold=4.4V
Output Current Iout（mA）
VDS=0.5V
VDS=1.0V
VDS=1.5V
VDS=2.0V
16
6
7
BL8506
PACKAGE LINE
Package
SOT-23-3
Devices per reel
3000Pcs
Unit
mm
Devices per reel
3000Pcs
Unit
mm
Package dimension：
Package
SOT-23-5
Package Dimension:
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17
BL8506
Package
SOT-89-3
Devices per reel
Package Dimension:
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18
1000Pcs
Unit
mm
BL8506
Package
TO-92
Devices per Bag
Package Dimension:
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19
1000Pcs
Unit
mm