Document
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.
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TSZ02201-0C1C0EC00760-1-2 19.Jul.2019 Rev.001
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 BD.