BELLING BL8568

BL8568
500mA High PSRR, Low Noise, Fast Response Linear Regulator
DESCRIPTION
FEATURES
BL8568 series is a group of positive voltage output,
low power consumption, low dropout voltage
regulator.
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BL8568 can provide output value in the range of
1.2V~4.5V every 0.1V step. It also can be customized
on command.
BL8568 includes high accuracy voltage reference,
error amplifier, current limit circuit and output driver
module with discharge capability.
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Low Power Consumption: 30uA(Typ.)
Low output noise (50uVRMS)
Standby Mode: 0.1uA
Low dropout Voltage: [email protected] (Typ.)
High Ripple Rejection: [email protected] (Typ.)
Low Temperature Coefficient: ±100ppm/oC
Excellent Line regulation: 0.05%/V
Build-in chip enable and discharge circuit
Output Voltage Range: 1.2V~4.5V (customized on
command every 0.1V step)
Highly Accurate: ±2%
Output Current Limit
BL8568 has excellent load and line transient response
and good temperature characteristics, which can
assure the stability of chip and power system. And it
uses trimming technique to guarantee output voltage
accuracy within ±2%.
APPLICATIONS
BL8568 is available in SOT-23-5, SC-70-5 packages
which is lead free.
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TYPICAL APPLICATION CIRCUIT
Power source for cellular phones and various kind
of PCSs
Battery Powered equipment
Power Management of MP3, PDA, DSC, Mouse,
PS2 Games
Reference Voltage Source
Regulation after Switching Power
ELECTRICAL CHARACTERISTICS
Load Regulation (Vin=4.5V, Vout=3.3V)
NOTE: Input capacitor (Cin=1uF) and Output capacitor
(Cout≥1uF) are recommended in all application circuit.
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BL8568
PIN CONFIGURATION
ORDERING INFORMATION
BL8568 
Code
Part No.
Description

Temperature&Rohs:
C: -40~85oC ,Pb Free Rohs Std.

Package type:
A5: SC-70-5
B5A: SOT-23-5(A)
B5B: SOT-23-5(B)
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Packing type:
TR:Tape&Reel (Standard)
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Output voltage:
e.g. 15=1.5V
18=1.8V
45=4.5V

Voltage accuracy:
Blank(default)=±2%
F: product
code
ZZ: date code
Part No.
BL8568CB5ATR□□□
Marking
F: product
code
X: output
voltage
FXZZ
ZZ: date code
Part No.
BL8568CB5BTR□□□
Marking
F: Product Code
X: Output Voltage
Code
X: output
voltage
FXZZ
MARKING DESCRIPTION
Vout
BL8568CA5TR□□□
Marking
F: product
code
Vout
Code
Vout
Code
2.6V
6
4.1V
1
FXZZI
X: output
voltage
1.2V
2
2.7V
7
4.2V
2
ZZ: date code
1.3V
3
2.8V
8
4.3V
3
1.4V
4
2.9V
9
4.4V
4
| : Type B
1.5V
5
3.0V
0
4.5V
5
1.6V
6
3.1V
1
1.7V
7
3.2V
2
1.8V
8
3.3V
3
1.9V
9
3.4V
4
2.0V
0
3.5V
5
2.1V
1
3.6V
6
2.2V
2
3.7V
7
2.3V
3
3.8V
8
2.4V
4
3.9V
2.5V
5
4.0V
PIN DESCRIPTION
Pin
Description
Vss
Gound
Vin
Input voltage supply
Vout
Output voltage
9
CE
Chip enable
0
NC
No connection
Date code 1 st Z: The year of manufacturing, "8" for
year 2008, and "0" for year 2010.
Date code 2nd Z: The week of manufacturing, "A" for
week 1, "Z" for week 26, "A" for week 27, "Z" for week
52.
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BL8568
BLOCK DIAGRAM
DIAGRAM EXPLANATION
BL8568 includes high accuracy voltage
reference, error amplifier, current limit
circuit and output driver module with
discharge capability.
BL8568 has excellent load and line
transient response and good temperature
characteristics, which can assure the
stability of chip and power system. And
it uses trimming technique to guarantee
output voltage accuracy within ±2%.
Low ESR ceramic capacitor can be used for
BL8568 for both input and output ends.
Both 1uF can keep BL8568 work stable.
However, a larger output capacitor, such
as 3.3uF /4.7uF is always recommended to
compensate dymanic load current change.
ABSOLUTE MAXIMUM RATING
Parameters
Value
Input Voltage
-0.3 ~ 6 V
Operation Junction Temperature (Tj)
150 oC
Output Current
600 mA
Storage Temperature
Power Dissipation
-65 ~ 150 oC
SC70-5
250 mW
SOT23-5
360 mW
IR Reflow Lead Temperature and Time
ESD Rating, Human Body Mode
260oC , 10s
3000 V
Note:
Exceed these limits to damage to the device.
Exposure to absolute maximum rating conditions may affect device reliability.
RECOMMENDED OPERATION RANGE
Parameters
Input Voltage
Operation Ambient Temperature
Value
1.2 ~ 6 V
-40 ~ 85 oC
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BL8568
ELECTRICAL CHARACTERISTICS
o
Test condition: Cin=1uF, Cout=1uF, TA=25 C, unless otherwise specified.
BL8568, for arbitrary output voltage (Voutset)
Symbol
Vin
Vout
IoutMAX
Vdrop
∆Vout
∆Vin ⋅ Vout
∆Vout / ∆Iout
Iss
Ishutdown
Parameters
Condition
Input Voltage
Output Voltage
Vin=Voutset+1V
1mA≤Iout≤30mA
Maximum Output Current
Voutset
x 0.98
Voutset
Max.
Unit
6
V
Voutset
x 1.02
V
600
mA
Iout=50mA
25
40
mV
Iout=100mA
50
75
mV
Iout=150mA
75
115
mV
Iout=400mA
220
280
mV
Line Reguation
Iout=40mA; 2.8V≤Vin≤6V
0.05
0.1
%/V
Load Regulation
Vin=Voutset+1V
1mA≤Iout≤500mA
100
150
mV
Supply Current when Operation
Vin=Voutset+1V
30
50
uA
0.1
1
uA
Dropout Voltage, Vout≥2.8V
Supplay Current when Shut Down Vin=Voutset+1V, Vce=0V
Vin=Set Vout+1V
Iout=30mA
PSRR
Power Supply Ripple Rejection
Rate
Ilimit
Output Short Current Limit
Vceh
CE Input Voltage for “High”
Vcel
CE Input Voltage for “Low”
en
Typ.
1.2
Output Voltage Temperature
Coefficient
∆Vout
∆T ⋅ Vout
Min.
Output Noise
±50
ppm/oC
F=1000Hz, Ripple=0.5Vpp
Vin=Voutset+1V
72
dB
Vout=0V
500
mA
1.4
V
0.25
Bandwith=10~100KHz
50
V
uVrms
NOTE:
Voutset is the nominal output voltage that BL8568 is set to, for example, 3.3V.
Vdrop=Vin-(Vout*0.98), in which Vout is the output voltage when Vin=Vout set+1.0V at different output current, and Vin is the
input voltage at which the output voltage becomes 98% of Vout after gradually decreasing the input voltage.
.
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BL8568
TYPICAL PERFORMANCE CHARACTERISTICS
o
Test condition: Cin=1uF, Cout=1uF, TA=25 C, CE pin is tied to Vin, Voutset=3.3V, unless otherwise specified.
1) Output Voltage vs. Output Current
2) Output Voltage vs. Input Voltage
3) Dropout Voltage vs. Output Current
4) Ripple Rejection vs. Frequency
.
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BL8568
TYPICAL PERFORMANCE CHARACTERISTICS (Cont')
o
Test condition: Cin=1uF, Cout=1uF, TA=25 C, CE pin is tied to Vin, Voutset=3.3V, unless otherwise specified.
5) Line Transient Response (Ch1: Vin 4↔5V; Ch2: Vout)
6) Load Transient Response (Ch1: Iout 1↔50mA; Ch2: Vout)
7) Startup by CE (Ch1: Vout; Ch2: CE)
8) Shutdown by CE (Ch1: Vout; Ch2: CE)
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BL8568
PACKAGE OUTLINE DIMENSION
Package
Devices per reel
SC70-5
3000
Dimension (mm)
Package
Devices per reel
SOT23-5
3000
Dimension (mm)
上海贝岭股份有限公司
www.belling.com.cn
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