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PDF BL6331 Data sheet ( Hoja de datos )
| Número de pieza | BL6331 | |
| Descripción | MONAURAL 3W Non-Clip DIGITAL AUDIO POWER AMPLIFIER | |
| Fabricantes | BELLING | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de BL6331 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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BL6331
BL6331
MONAURAL 3W Non-Clip DIGITAL AUDIO POWER AMPLIFIER
Features
Professional non-clip output control function:
Maximum non-clip output
800mW(VDD=4.2v, RL=8Ω,NC1 mode)
Four mode can be selected with CTRL
terminal: NC1( NonClip1), NC2 (nonClip2),
NC_OFF (NonClip-off), shutdown
Maximum output (work in nonclip-off mode)
3W（VDD=5.0V, RL=4Ω, THD+N=10%）
0.82W（VDD=3.6V, RL=8Ω, THD+N=10%）
THD+N
0.06% (VDD = 3.6V, RL=8Ω, PO=0.4W, 1kHZ)
Efficiency With an 8Ω Speaker:
88% at 400 mW
80% at 150 mW
Optimized PWM Output Stage Eliminates LC
Output Filter
Improved PSRR (−75 dB) and Wide Supply
Voltage (2.5 V to 5.5 V) Eliminates Need for
a Voltage Regulator
Over-current and Thermal Protection function
Low voltage Malfunction prevention function
Available in space-saving package:
9-bump WLCSP
Applications
Mobile phone, PDA
MP3/4, PMP, GPS
Portable electronic devices
Pin Diagrams
12
3
A IN+
VDD
VO+
B GND
VREF
PGND
C IN-
CTRL
VO-
top view
General Description
BL6331 is a 3-W (VDD=5.0V, RL=4Ω) high efficiency
filter-free class-D audio power amplifier in a wafer
chip scale package (WLCSP).
BL6331 has a “Professional non-clip output control
circuit” which reducing distortion of output signal due
to either the over level input signal or power supply
voltage down with battery,
Features like 88% efficiency, −75dB PSRR, and
improved RF-rectification immunity make the BL6331
ideal for cellular handsets. In cellular handsets, the
earpiece, speakerphone, and melody ringer can each
be driven by the BL6331.
Application Circuit
C1
1.0uF
differential
input
CTRL1
CTRL2
Rctrl1
Rctrl2
Rctrl3
CIN
33nF
33nF
CIN
Cctrl
0.1uF
IN+ VDD
VO+
IN-
BL6331
CTRL
VREF
AGND
VO-
PGND
C2
1.0uF
Pin Description
Notice: CTRL terminal function is described in page 4.
PIN # Name
Description
A1 IN+ Positive differential input
A2 VDD Power Supply
A3 VO+ Positive BTL output
B1 AGND Analog Ground
B2 VREF Bypass capacitor connected
B3 PGND Power Ground
C1 IN- Negative differential input
C2 CTRL Mode select
C3 VO- Negative BTL output
http://www.belling.com.cn
-1-
Total 12 Pages
1 page  
Test Circuit
BL6331
Ci
Signal input
from
measurement
33nF
Vin
Ci
Ctrl
signal
33nF
0.1uF
IN+ VO+
IN- BL6331 VO-
CTRL
VREF
VDD GND PGND
C1
30KHz
LPF
Power +
Supply -
1uF
C2 1uF
Output
VO to
measurement
BL6331 Test Circuit
VO+
VO-
100
47nF
100
47nF
VO
30kHz LPF
30-kHz LPF for BL6331 test
Notes: 1>. C1 should be placed as close as possible to VDD/GND pad of the device
2>. Ci should be shorted for any Common-Mode input voltage measurement
3>. A 33uH inductor should be used in series with RL for efficiency measurement
4>. The 30 kHz LPF (shown in figure 5) is required even if the analyzer has an
internal LPF
http://www.belling.com.cn
-5-
Total 12 Pages
5 Page 
BL6331
VDD vs Maximum output
4500
4000
3500
3000
2500
2000
1500
1000
500 PO NC_OFF
0 PO_NC1
2.5 3 3.5 4 4.5 5 5.5
VDD(V)
Figure 8 Maximum output VS VDD @ RL=4ohm
Efficiency vs Po
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
Vdd=5V
Vdd=2.5
0.02 0.05 0.1 0.15 0.2 0.25 0.4 0.5 0.6 0.8 1 1.2
Po
Figure 9 Efficiency VS Po @ RL=8ohm
http://www.belling.com.cn
- 11 -
Total 12 Pages
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet BL6331.PDF ] | |
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