Speaker Amplifier. BD78324EFJ-M Datasheet

BD78324EFJ-M Amplifier. Datasheet pdf. Equivalent

Part BD78324EFJ-M
Description Monaural Speaker Amplifier
Feature Datasheet Class-AB Speaker Amplifier Series 1.2 W Monaural Speaker Amplifier for Automotive BD783x.
Manufacture ROHM
Datasheet
Download BD78324EFJ-M Datasheet



BD78324EFJ-M
Datasheet
Class-AB Speaker Amplifier Series
1.2 W
Monaural Speaker Amplifier for Automotive
BD783xxEFJ-M Series (Including products under development)
General Description
BD783xxEFJ-M Series are Class-AB monaural speaker
amplifiers designed for automotive. Class-AB amplifiers
have no requirements for care about EMI noise. Adopting
power package HTSOP-J8 achieves high output power.
Low quiescent current can reduce battery consumption.
Shutdown current is also very low (0.1 µA Typ) and pop
noise level when switching to shutdown is very small, so
this device is suitable for applications in which the mode
often changes between “shutdown state” and “active
state”.
Features
AEC-Q100 Qualified(Note 1)
Pop Noise Reduction Function
Shutdown Function
Protection Functions
- Over Current Protection
- Thermal Shutdown
- Under Voltage Lock Out (UVLO)
Power Package with Thermal Pad HTSOP-J8
(Note 1) Grade2
Applications
Automotive Instruments
Key Specifications
Output Power
1.2 W (Typ)
(VDD = 5 V, RL = 8 Ω, THD+N = 1 %)
Quiescent Current
2.5 mA (Typ)
Shutdown Current
0.1 µA (Typ)
Total Harmonic Distortion + Noise
(RL = 8 Ω, f = 1 kHz)
Output Noise Voltage
0.05 % (Typ)(Note 2)
15 μVRMS (Typ)(Note 2)
Voltage Gain
6.0 dB to 26.0 dB (Typ)
Operating Temperature Range -40 ºC to +105 ºC
(Note 2) Characteristic of BD78306EFJ-M
Package
HTSOP-J8
W (Typ) x D (Typ) x H (Max)
4.90 mm x 6.00 mm x 1.00 mm
HTSOP-J8
Typical Application Circuit
1 SDB
From System
Control
C1
2 BIAS
0.47 µF
Input
Signal
C2
3 INP
0.47 µF
C3
4 INN
0.47 µF
OUTN 8
GND 7
VDD 6
C4
10 µF
VDD
OUTP 5
Figure 1
Product structure : Silicon integrated circuit
www.rohm.com
© 2019 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
This product has no designed protection against radioactive rays.
1/25
TSZ02201-0C1C0EC00760-1-2
19.Jul.2019 Rev.001



BD78324EFJ-M
BD783xxEFJ-M Series (Including products under development)
Pin Configuration
(TOP VIEW)
SDB 1
BIAS 2
INP 3
INN 4
EXP-PAD
8 OUTN
7 GND
6 VDD
5 OUTP
Caution:
VDD and GND pins adjoin each other. In case that these pins are shorted each other, it may make characteristics of power
supply device worse, or it may damage power supply device.
Considering this point, select power supply device which has protection functions as over current protection.
Pin Description
Pin No.
1
2
3
4
5
6
7
8
-
Pin Name
SDB
BIAS
INP
INN
OUTP
VDD
GND
OUTN
EXP-PAD
Function
Shutdown
Bias
Positive differential input
Negative differential input
Positive output
Power supply
Ground
Negative output
Connect the EXP-PAD to Ground
Control Pin’s Setting
SDB pin
High
Low
Operating Mode
Active
Shutdown
Block Diagram
INP
3
INN
4
BIAS
2
6
VDD
Rf
Ri
Ri
Rf
Ri
Rf
Ri
Rf
Bias
SDB
1
GND
7
Figure 2
OUTP 5
OUTN 8
Over Current
Pro tection
Thermal
Shu tdo wn
Under Vol tage
Lock O ut
Part Number
BD78306EFJ-M
BD78308EFJ-M*1
BD78310EFJ-M
BD78312EFJ-M*1
BD78314EFJ-M*1
BD78316EFJ-M*1
BD78318EFJ-M*1
BD78320EFJ-M*1
BD78322EFJ-M*1
BD78324EFJ-M*1
BD78326EFJ-M
*1 Under Development
Ri[]
(Typ)
90
80
70
60
50
40
36
30
24
20
16
Rf[]
(Typ)
90
80
110
120
130
140
144
150
156
160
164
www.rohm.com
© 2019 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
2/25
TSZ02201-0C1C0EC00760-1-2
19.Jul.2019 Rev.001





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