BL8072

BL8072
2A Low Consumption Linear Regulator
DESCRIPTION
FEATURES





BL8072 is a series of low power consumption, low
dropout voltage regulator with a typical dropout
voltage of 1.0V at 2A load current.
BL8072 can provide output value in the range of
1.2V~5.0V in 0.1V steps. It also can customized
on command.


Other than every voltage version can be used as
an adjustable voltage version, with which desired
voltage can be achieved by setting the values of
two external resistors of the application circuitry.
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APPLICATIONS
BL8072 has well load transient response and
good temperature characteristic, And it uses
trimming technique to guarantee output voltage
accuracy within±2%.
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
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BL8072 series is available in standard packages of
SOT-223 and TO-252.
TYPICAL APPLICATION
Vin
Vin
Cin
Low Power Consumption:3.0uA (Typ.)
Maximum output current : 2A
Maximum input voltage: 18V
Line regulation: 0.2% (Typical)
Output Voltage Range:1.2V~5.0V (customized
on command in 0.1V steps)
Highly Accurate:±2%(±1% customized)
Typical Dropout Voltage:
[email protected] (Vout=3.3V)
Operation environment Temperature:
-40 ~85
Battery Charger
Battery Powered equipment
Post Regulators for Switching Supplies
Reference Voltage Source Regulation after
Switching Power
ELECTRICAL CHARACTERISTICS
Vout
LC1222
BL8072
GND
Dropout
Vout
2.0
1.8
Cout
1.6
Dropout (V)
1.4
Fig1. BL8072 fixed voltage application circuit
1.0
0.8
0.6
Vout=1.2V
Vout=3.3V
Vout=5.0V
0.4
Note: Input capacitor (Cin=1uF) and Output capacitor
(Cout=1uF) are recommended in all application circuit.
ceramic capacitor is recommended.
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1.2
0.2
0.0
0.0
1
0.5
1.0
Iout(A)
1.5
2.0
BL8072
ORDERING INFORMATION
PIN CONFIGURATION
BL8072 □
1□
2□
3□
4□
5
Code
Product Classification
JJ: Product Code
XX: Output Voltage
LL: Lot No.
1
□
2
□
3
□
4
□
5
□
Description
Temperature&Rohs:
C: -40~85C, Pb Free Rohs Std.
Package type:
L: SOT-223
O:TO-252
Packing type:
TR: Tape&Reel (Standard)
Output voltage:
e.g. 18=1.8V
33=3.3V
50=5.0V
Voltage accuracy:
Blank(default):±2%
1: ±1%
BL8072CLTR□□
YYWW: Date Code
Product Classification
JJ: Product Code
XX: Output Voltage
LL: Lot No.
BL8072COTR□□
TO-252
YYWW: Date Code
ABSOLUTE MAXIMUM RATING
Parameter
Max Input Voltage
Operating Junction Temperature(Tj)
Ambient Temperature(Ta)
Package
SOT-223
Thermal
TO-252
Resistance
Storage Temperature(Ts)
Lead Temperature & Time
XX: Output voltage code, e.g. 12=1.2V, 25=2.5V, 33=3.3V;
YY: The Year of manufacturing, ”11” stands for year 2011,
”12” stands for year 2012, and “28”stands for year2028.
WW: The week of manufacturing. ”01” stands for week 1,
”02” stands for week 02, ”52” stands for week 52.
Value
20V
125C
-40C –85C
20C / W
12C / W
-40C -150C
260C,10S
Note:
Exceed these limits to damage to the device.
Exposure to absolute maximum rating conditions may
affect device reliability.
RECOMMENDED WORK CONDITIONS
Parameter
Input Voltage Range
Ambient Temperature
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Value
Max.18V
-40C –85C
2
BL8072
ELECTRICAL CHARACTERISTICS
(Test Conditions: Cin=1uF, Cout=1uF, TA=25C, Unless Otherwise Specified)
Symbol
Vin
Parameter
Output Voltage
Iout(Max.)
Maximum Output
Current
Vout
Vin  Vout
Input-Output
Voltage Differential
(note 3)
Vin-Vout=1.9V
Vin-Vout=1.5V
Vin-Vout=1V
Vout <1.5V
Iout1.5A
1.5VVout<2.0V
1.5VVout<2.0V
Vout  2.0V
Vout <1.5V
Max
Unit
18
Vout
X1.02
V
2
V
A
1600
1200
850
1800
1400
950
mV
0.1
0.3
%/V
Vin=Set Vout+1V
40
20
10
3.0
60
40
30
5.0
Iout=100mA
200
ppm/C
SOT-223
TO-252
20
12
C / W
Vout  2.0V
Iout=10mA
Set Vout+1V≤Vin≤18V
Vout
Load Regulation
(note 1,2)
1mA≤Iout≤1.5A
Iq
Quiescent Current
Output Voltage
Temperature
Coefficient
Thermal
Resistance
junction to case
 JC
Typ
Vout
x0.98
Line Regulation
(note 1)
Vout
T  Vout
Min
Input Voltage
Vout
Dropout
Voltage
Conditions
Vout <1.5V
1.5VVout<2.0V
Vout  2.0V
mV
uA
Note1: Line Regulation and Load Regulation in Table1 are tested under constant junction temperature.
Note2: When load current varies between 0~2A and Vin-Vout ranges from 1V~18V at constant junction temperature,
the parameter is satisfied the criterion in table.
Note3: Dropout Voltage is the voltage difference between the input and output pin when the input voltage is minimum
to maintain the lowest spec output voltage.
BLOCK DIAGRAM
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3
BL8072
DETAILED DESCRIPTION
BL8072 is a series of low dropout voltage and low power consumption regulator. Its application
circuitry requires minimum number of external components. Both fixed voltage and adjustable voltage
application circuits need input and output capacitors to assure output voltage stability. Any desired output
voltage from fixed voltage to 18V can be achieved by assigning proper values to two external resistors in its
application circuitry (as shown in Fig.3, as R1, R2 are the two external resistors.).
BL8072 uses trimming technique to assure the accuracy of output value within ±2%, at the same time,
temperature compensation is elaborately considered in this chip, which makes BL8072’s temperature
coefficient within 100ppm/℃。
TYPICAL APPLICATION
BL8072 has fixed voltage and adjustable voltage application mode, Fig.4 shows their typical application
circuitry.
A 1uF ceramic capacitor connected between input and GND as bypass capacitor and a 1uF ceramic
capacitor between output and GND are recommended for all application.
Using a bypass capacitor (CAdj) between the adjust terminal and ground can improve ripple rejection. The
bypass capacitor prevents ripple from being amplified in case the output voltage is increased. The
impedance of CAdj should be less than the resistance of R1 to prevent ripple from being amplified at any
frequency. As R1 is normally in the range of 1KΩ~10KΩ, the value of CAdj should satisfy the following
condition:
1/(2* FrequencyRipple *Cadj)<R1
A 0.1µF ceramic capacitor is recommended.
Fig 3. Typical Application of BL8072
EXPLANATION
The output voltage of adjustable application satisfies this followed equation:
Vout=VRef× (1+R2/R1)+IAdj×R2.
The second term IAdj×R2 can be ignored since the adjustable pin current IAdj (~ 2µA) is much less than the
current through R1 (~1mA).
The value of R1 is preferred in the range of 1KΩ～10KΩ and the value of VRef is the output voltage of typical
fixed voltage application circuit.
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BL8072
TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulaion
Load Regulaion
(Vout=1.2V)
3.5
1.2
3.0
1.0
Vout (V)
Vout (V)
(Vout=3.3V)
4.0
1.4
0.8
0.6
2.5
2.0
1.5
0.4
0.2
0.0
0.0
0.5
1.0
Iout(A)
1.5
Vin=4.3V
Vin=5V
Vin=6V
Vin=10V
1.0
Vin=3V
Vin=4V
Vin=5V
Vin=10V
0.5
0.0
2.0
0.0
0.5
Load Regulaion
1.5
2.0
Line Regulaion
(Vout=5.0V)
6
1.0
Iout(A)
6
5
5
Vout (V)
Vout (V)
4
4
3
2
3
2
1
Vin=6V
Vin=7V
Vin=8V
Vin=10V
1
0
0.0
0.5
0
0
1.0
Iout(A)
1.5
3
2.0
6
12
Vout=1.2V
Vout=3.3V
Dropout
15
18
Vout=1.8V
Vout=5.0V
IQ
2.0
16
1.8
14
1.6
12
Iq (uA)
1.4
Dropout (V)
9
Vin(V)
1.2
1.0
0.8
10
8
6
0.6
0.4
0.2
Vout=1.2V
4
Vout=3.3V
2
Vout=5.0V
0.0
0.0
0.5
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1.0
Iout(A)
1.5
0
2.0
0
5
3
6
9
Vin (V)
12
15
18
BL8072
Line Transient Response
Load Transient Response
Iout=100mA,Vin=3.3V to 4.3V
(Orange: Vin, Green: Vout)
Vin=3.3V, Iout=0.1A to 1A
(Pink: Iout, Green: Vout)
PACKAGE LINE
Package
TO-252
Devices per reel
2500
Package specification：
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6
Unit
mm
BL8072
Package
SOT-223
Devices per reel
2500
Package specification：
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7
Unit
mm