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PDF BL8569 Data sheet ( Hoja de datos )
| Número de pieza | BL8569 | |
| Descripción | Dual 500mA High PSRR Linear Regulator | |
| Fabricantes | BELLING | |
| Logotipo |  |
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BL8569
Dual 500mA High PSRR Linear Regulator
DESCRIPTION
FEATURES
BL8569 dual,low-noise,low-dropout regulator
delivers at least 500mA of continuous output
current. The output voltage for each regulator
is set independently by trimming.Voltages are
selectable in 100mV steps within a range of
1.2V to 4.5V. The BL8569 includes two
independent logic-controlled shutdown inputs
and allows the output of each regulator to be
turned of independently.
BL8569 includes high accuracy voltage
reference, error amplifier, current limit circuit
and output driver module.
BL8569 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%.
BL8569 is available in SOT-23-6 package
which is lead(Pb)- free
• Two low dropout voltage regulators
• 500mA output current for each LDO
• Low output noise (50uVRMS)
• Low dropout Voltage:0.08V@150mA(Typ)
• Standby Mode: 0.1uA
• High Ripple Rijection:72dB@1000Hz (Typ)
• Excellent Line regulation: 0.05%/V
• Independent Shutdown controls
• 1.2V to 4.5V Factory-Preset Output
• Output Current Limit
• Highly Accurate: ±2%
APPLICATIONS
• Cellular phones
• Cordless phones and radio
communication equipment
• Battery Powered equipment
• Notebook and hand-hold equipment
• Wireless LAN
• GPS receivers
TYPICAL APPLICATION
ELECTRICAL CHARACTERISTICS
APPLICATION HINTS
NOTE:
Input capacitor (Cin=1uF) and Output
capacitor (Cout=1uF/3.3uF) are
recommended in all application circuit.
PSRR
80
70
60
50
40
30
20
10
0
0.01
Vout=3.3V
0.1 1
10
Freq(KHz)
100 1000
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1 page  
BL8569
TYPICAL PERFORMANCE CHARACTERISTICS
1) Output Voltage vs. Output Current (with
output short protection)
2) Output Voltage vs. Input Voltage
Current limit Vs. Vout
3.5
3
2.5
2
1.5
1
0.5
0
0 200 400 600 800 1000 1200 1400 1600
Iload(mA)
3) Dropout Voltage vs. Output Current
Dropout & Iout
180
160
140
120
100
80
60
40
20
0
0
Vout=3.3V
50 100 150 200 250 300 350
Iout(mA)
Line Regulation
3.313
3.3125
3.312
3.3115
3.311
3.3105
3 3.5 4 4.5 5 5.5 6
VIN(V)
Iout=14(mA)
4) Ripple rejection vs. Frequency
P SRR
80
70
60
50
40
30
20
10
0
0.01
Vout=3.3V
0.1 1
10
Freq(KHz)
100 1000
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5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet BL8569.PDF ] | |
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