BL6312 Datasheet PDF - BELLING
| Part Number | BL6312 | |
| Description | 2.7W/CH Stereo Filter-Free Class-D Audio Power Amplifier | |
| Manufacturers | BELLING | |
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BL6312
2.7 W/CH Stereo Filter-Free Class-D Audio Power Amplifier
Features
Output power:
2.7W/Ch with 4Ω loader at VDD=5V
1.5W/Ch with 8Ω loader at VDD=5V
Low supply current (Typical 7mA quiescent current)
Low shutdown current (Typical 0.4µA shutdown current)
Thermal protection and output over current protection are designed
Optimized PWM output stage eliminates LC output filter
Independent shutdown control for each channel
Select gain of 6, 12, 18, 24 dB
Internally generated 300-kHz switching frequency eliminates capacitor and resistor
Internal pull-down resistor on shutdown terminal
General Description
The BL6312 is a 2.7-W high efficiency, stereo, filter-free class-D audio power amplifier in
QFN20 package that requires only two external components.
Features like 88% efficiency, improved RF-rectification immunity make the BL6312 ideal for
cellular handsets. In cellular handsets, the earpiece, speaker phone, and melody ringer can each be
driven by the BL6312.
Applications
Mobile phone、PDA
MP3/4、PMP
Portable electronic devices
USB Speakers
Educational toys
Notebook PC
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- Page 1 of 8 -
Ver1.0
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Electrical Characteristics
BL6312
The following specifications apply for the circuit shown in Figure 5.
TA = 25℃, unless otherwise specified.
Symbol
Parameter
Conditions
ISD Shutdown Current
IQ Quiescent Current
VIN=0V, VSDB=0V, No Load
VDD = 2.5V, VIN = 0V, No Load
VDD = 3.6V, VIN = 0V, No Load
VDD = 5.5V, VIN = 0V, No Load
V
OS
Output Offset Voltage
VDD = 2.5V to 5.5V
CMRR Common Mode Rejection Ratio
Channel crosstalk
Inputs shorted together,
VDD = 2.5V to 5.5V
f=1k Hz
FSW Modulation frequency
VDD = 2.5V to 5.5V
G1=0.35v, G0=0.35v
AV Closed-loop voltage gain
TWU Wake-up time from shutdown
Resistance from SDBR/SDBL to GND
G1=0.35v, G0= VDD
G1= VDD , G0=0.35v
G1= VDD , G0= VDD
VDD = 3.6V
Drain-Source resistance
rDS(on)
(on-state)
Input impedance
AV=6 dB
AV=12dB
AV=18dB
AV=24dB
VDD = 5.5V
VDD = 3.6V
VDD = 2.5V
Min.
Spec
Typ.
0.1
3.5
4.3
7
Max.
1.5
6
7.5
11
Units
uA
mA
7 25 mV
-70 dB
-110 dB
250 300 350 kHz
5.5 6 6.5
11.5 12 12.5
dB
17.5 18 18.5
23.5 24 24.5
1 mS
142 150 158 kΩ
400
500 mΩ
700
28.1
17.3
kΩ
9.8
5.2
Operating Characteristics
VDD = 5V, TA = 25℃, unless otherwise specified.
Symbol Parameter
Conditions
Output Power
PO
( per channel )
Total Harmonic
THD+N
Distortion + Noise
Supply ripple
KSVR
rejection ratio
Common Mode
CMRR
Rejection Ratio
THD+N=10%, f=1KHz, RL = 4Ω
THD+N=10%, f=1KHz, RL = 8Ω
Po=1.0Wrms, f=1kHz, RL = 8Ω, AV=6dB
Po=0.5Wrms, f=1kHz, RL = 8Ω, AV=6dB
VDD = 5V, AV=6dB f=217Hz,
V(Ripple)=200mVPP
VDD = 5V, VIC = 1 VPP, f=217Hz
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- Page 5 of 8 -
Min.
Spec
Typ.
2.7
1.6
0.12
0.13
Units
Max.
W
%
-63 dB
-70 dB
Ver1.0
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for BL6312 electronic component. |
| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ BL6312.PDF Datasheet ] | |
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