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PDF BL8554 Data sheet ( Hoja de datos )
| Número de pieza | BL8554 | |
| Descripción | Linear Regulator | |
| Fabricantes | BELLING | |
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DESCRIPTION
BL8554 series is a group of positive voltage
output, low power consumption, low dropout
voltage regulator.
BL8554 can provide output value in the range
of 1.0V~4.5V every 0.1V step. It also can be
customized on command.
BL8554 includes high accuracy voltage
reference, error amplifier, current limit circuit
and output driver module。
BL8554 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%.
BL8554 is available in SOT-23-5, SC-70-5
and SOT23-3 packages which is lead free.
BL8554
300mA High PSRR, Linear Regulator
FEATURES
• Low Power Consumption: 25uA（Typ.）
• Low output noise (47uVRMS)
• Standby Mode: 0.1uA
• Low dropout Voltage: 0.16V@300mA
(Typ.)
• High Ripple Rejection: 73dB@100Hz
(Typ.)
• Low Temperature Coefficient: ±
100ppm/°C
• Excellent Line regulation: 0.05%/V
• Build-in chip enable circuit
• Output Voltage Range: 1.0V~4.5V
(customized on command every 0.1V
step)
• Highly Accurate: ±2%
• Output Current Limit
APPLICATIONS
• 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
TYPICAL APPLICATION
Input
Cin
On/Off
VDD
VOUT
BL8554
CE
GND
Output
Cout
NOTE: Input capacitor (Cin=1uF) and Output
capacitor (Cout=3.3uF/4.7uF) are
recommended in all application circuit.
Load Regulation
(VIN=4.5V)
3.35
3.3
3.25
3.2
3.15
3.1
3.05
3
0
50 100 150 200 250 300 350
Iout(mA)
ELECTRICAL CHARACTERISTICS
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1
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BL8554
TYPICAL PERFORMANCE CHARACTERISTICS
1) Output Voltage vs. Output Current (with output 2) Output Voltage vs. Input Voltage
short protection)
3.5
3
2.5
2
1.5
1
0.5
0
0
Current limit Vs. Vout
500 1000
Iload(mA)
1500
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)
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)
4) Ripple rejection vs. Frequency
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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5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet BL8554.PDF ] | |
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