|
|
PDF RT9108NB Data sheet ( Hoja de datos )
| Número de pieza | RT9108NB | |
| Descripción | 15W Stereo Class-D Audio Power Amplifier | |
| Fabricantes | Richiek | |
| Logotipo |  |
|
 1. 15W Stereo Audio Power Amplifier  Hay una vista previa y un enlace de descarga de RT9108NB (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
|
No Preview Available !
®
Preliminary
RT9108NB
15W Stereo Class-D Audio Power Amplifier
General Description
Features
The RT9108NB is a 15W per channel, high efficiency
Class D stereo audio amplifier for driving Bridge Tied Load
(BTL) speakers. The RT9108NB can drive stereo speakers
with load as low as 4Ω. Its high efficiency eliminates the
need for an extra heat sink when playing music. The gain
of the amplifier can be controlled by two gain select pins.
The outputs are fully protected against shorts to GND,
PVCC, and output to output with an auto recovery feature
and monitored output.
The RT9108NB is available in a TSSOP-28 (Exposed Pad)
package.
z 8V to 26V Input Supply Range
z 6W/CH for an 8Ω Load, 10V Supply at 10% THD +N
z 15W/CH for an 8Ω Load, 16V Supply at 10% THD +N
z 90% Efficiency Eliminates Need for Heat Sinks
z Four Selectable or Fixed Gain Settings
z Mute Function Amplifier
z Robust Pin - to- Pin Short Circuit Protection
z Thermal Protection with Auto Recovery Option
z Speaker Protection with Adjustable Power Limit
z Surface Mount TSSOP-28 (Exposed Pad) Package
z RoHS Compliant and Halogen Free
Applications
Ordering Information
z LCD-TV
RT9108NB
z Monitors
Package Type
CP : TSSOP-28 (Exposed Pad-Option 3) z DVD Players
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
RT9108NB
GCPYMDNN
RT9108NBGCP : Product Number
YMDNN : Date Code
Simplified Application Circuit
PVCC
Audio
Source
GAIN0
GAIN1
RT9108NB
PVCCx
BSPL
LINP
GAIN0
OUTPL
PGND
OUTNL
BSNL
GAIN1
BSNR
OUTNR
RINP
PGND
OUTPR
BSPR
AGND
FB
FB
FB
FB
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9108NB-P01T00 April 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
Preliminary
RT9108NB
Absolute Maximum Ratings (Note 1)
z Supply Voltage, PVCCR, PVCCL, AVCC --------------------------------------------------------------- −0.3V to 30V
z Input Voltage, SD, GAIN0, GAIN1, FAULT ------------------------------------------------------------- −0.3V to (AVCC + 0.3V)
z Output Voltage, OUTPR, OUTPL, OUTNR, OUTNL ------------------------------------------------- −0.3V to (PVCCx + 0.3V)
z Bootstrap Voltage, BSPR, BSPL, BSNR, BSNL ---------------------------------------------------- −0.3V to (PVCCx + GVDD)
z Other Pins ------------------------------------------------------------------------------------------------------ −0.3V to (GVDD + 0.3V)
z Power Dissipation, PD @ TA = 25°C
TSSOP-28 (Exposed pad) ---------------------------------------------------------------------------------- 3.44W
z Package Thermal Resistance (Note 2)
TSSOP-28 (Exposed pad), θJA ---------------------------------------------------------------------------- 29°C/W
TSSOP-28 (Exposed pad), θJC --------------------------------------------------------------------------- 1.2°C/W
z Junction Temperature ---------------------------------------------------------------------------------------- 150°C
z Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------ 260°C
z Storage Temperature Range ------------------------------------------------------------------------------- −65°C to 150°C
z ESD Susceptibility (Note 3)
HBM (Human Body Model) --------------------------------------------------------------------------------- 2kV
MM (Machine Model) ---------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 4)
z Supply Voltage, PVCCR = PVCCL ---------------------------------------------------------------------- 8V to 26V
z Junction Temperature Range ------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range ------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(PVCCx = 12V, RL = 8Ω, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
SD, GAIN0,
GAIN1, MUTE
Input Voltage
Logic-High VIH
Logic-Low VIL
Low Level Output Voltage
VOL
FAULT, RPULL-UP = 100kΩ
High Level Input Current
IIH
SD, GAIN0, GAIN1, MUTE, VI = 3V,
Low Level Input Current
IIL
Class-D Output Offset Voltage
(measured differentially)
|VOS|
SD, GAIN0, GAIN1, MUTE, VI = 0.8V,
VI = 0V, Gain = 36dB
Quiescent Supply Current
Quiescent Supply Current in
Shutdown Mode
Drain-Source On-State
Resistance
IQ
IQ_SHDN
RDS(ON)
VSD = 3V, no load
VSD = 0.8V, no load
IO = 500mA, TJ = 25°C
High Side
Low Side
Gain
VGAIN1 = 0.8V
G
VGAIN1 = 3V
VGAIN0 = 0.8V
VGAIN0 = 3V
VGAIN0 = 0.8V
VGAIN0 = 3V
Min
3
--
--
--
--
--
--
--
--
--
19
25
31
35
Typ Max Unit
-- -- V
-- 0.8 V
-- 0.8 V
-- 50 μA
-- 10 μA
10 25 mV
20 35 mA
-- 2 mA
250 -- mΩ
200 --
20 21
26 27
dB
32 33
36 37
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9108NB-P01T00 April 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
Preliminary
RT9108NB
Power Limit
The voltage at pin 10 can used to limit the power to levels
below that which is possible based on the supply rail. Add
a resistor divider from GVDD to ground to set the voltage
at the PLIMIT pin. An external reference may also be
used if tighter tolerance is required. Also add a 1uF capacitor
from pin 10 to ground.
The PLIMIT circuit sets a limit on the output peak-to-peak
voltage. The limiting is done by limiting the duty cycle to fixed
maximum value. This limit can be thought of as a " virtual"
voltage rail which is lower than the supply connected to
PVCC. This " virtual" rail is 5 times the voltage at the
PLIMIT pin. This output voltage can be used to calculate
the maximum output power for a given maximum input
voltage and speaker impedance.
POUT
=
ææ
ççè
ç
è
RL
RL
ö
÷
+ 2 x RS ø
2 x RL
ö2
x VP ÷÷ø
Where:
for unclipped power
RS is the total series resistance including RDS(on),
and any resistance in the output filter.
RL is the load resistance.
VP is the peak amplitude of the output possible
within the supply rail.
VP = 5 × PLIMIT voltage if PLIMIT < 5 × VP
POUT (10%THD) = 1.25 × POUT (unclipped)
Test Conditions ()
PVCC=24V, Vin=1Vrms,
RL=8Ω, Gain=26dB
PVCC=24V, Vin=1Vrms,
RL=8Ω, Gain=26dB
PVCC=24V, Vin=1Vrms,
RL=8Ω, Gain=26dB
PVCC=24V, Vin=1Vrms,
RL=8Ω, Gain=26dB
PVCC=24V, Vin=1Vrms,
RL=8Ω, Gain=20dB
PVCC=24V, Vin=1Vrms,
RL=8Ω, Gain=20dB
PVCC=24V, Vin=1Vrms,
RL=8Ω, Gain=20dB
PVCC=12V, Vin=1Vrms,
RL=8Ω, Gain=20dB
PVCC=12V, Vin=1Vrms,
RL=8Ω, Gain=20dB
PLIMIT Typical Operation with RT9108NB
PLIMIT Voltage
GVDD
Output Power (W)
36.3 (thermally limited)
Output Voltage
Amplitude (VP-P)
46
2.94 18.5 31.8
2.34 12.3 25.5
1.62 6.2 18.2
GVDD
11.6
29.6
3.00 10.4 26.6
1.86 5.2 17.3
GVDD
9.35
23.4
1.76 5 16.4
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9108NB-P01T00 April 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet RT9108NB.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RT9108NB | 15W Stereo Class-D Audio Power Amplifier | Richiek |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |