TDA7851L datasheet & equivalent | vs TDA7560
- Output Type: 4-Channel (Quad)
- Max Output Power x Channels@Load: 75W x 4 @ 2Ohm
- Voltage-Supply: 8V ~ 18V
- Package: 25-Flexiwatt (Vertical)

FREE delivery for orders over HK$250.00

Quick response, quick quotaton

Flash shipment,no worries after sales

Original channel,guarantee of the authentic products
TDA7851L 4-Channel Car Stereo Amplifier Board | 12V Amplifier Board | Connection Details | Tamil
TDA7851L Pinout
The TDA7851L is an integrated four-channel audio amplifier primarily designed for automotive audio systems. With its robust design and high-quality output, it effectively manages power and thermal requirements, providing clear audio amplification. The device features multiple control and feedback pins for enhanced functionality, ensuring superior audio performance and reliability.
Pin Number | Pin Name | Description |
---|---|---|
1 | TAB | Thermal connection tab (Ground) |
2 | P-GND2 | Power Ground for Channel 2 |
3 | OUT2- | Negative Output of Channel 2 |
4 | ST-BY | Standby Control (active low) |
5 | OUT2+ | Positive Output of Channel 2 |
6 | OUT1- | Negative Output of Channel 1 |
7 | P-GND1 | Power Ground for Channel 1 |
8 | OUT1+ | Positive Output of Channel 1 |
9 | SVR | Supply Voltage Ripple Rejection |
10 | IN1 | Input Signal for Channel 1 |
11 | IN2 | Input Signal for Channel 2 |
12 | IN3 | Input Signal for Channel 3 |
13 | IN4 | Input Signal for Channel 4 |
14 | S-GND | Signal Ground |
15 | AC-GND | AC Ground (Reference Voltage) |
16 | OUT3+ | Positive Output of Channel 3 |
17 | P-GND3 | Power Ground for Channel 3 |
18 | OUT3- | Negative Output of Channel 3 |
19 | Vcc | Supply Voltage |
20 | OUT4+ | Positive Output of Channel 4 |
21 | MUTE | Mute Control (active high) |
22 | OUT4- | Negative Output of Channel 4 |
23 | P-GND4 | Power Ground for Channel 4 |
24 | CD | Clip Detection |
25 | TAB | Thermal connection tab (Ground) |
The TDA7851L pin configuration highlights its advanced integration tailored for vehicle audio applications. Its specific pins offer critical functionalities like channel-specific outputs, power and signal grounding, mute and standby modes, and distortion detection, making it an ideal choice for high-performance automotive audio solutions.
TDA7851L Equivalent
Here is a concise comparison of several equivalent ICs to TDA7851L, featuring similar packaging (Flexiwatt-25) and close parameters.
Parameter | TDA7851L | TDA7850 | TDA7388 | TDA7560 |
---|---|---|---|---|
Package | Flexiwatt-25 | Flexiwatt-25 | Flexiwatt-25 | Flexiwatt-25 |
Number of Channels | 4 | 4 | 4 | 4 |
Max. Output Power | 4 × 75W @ 2Ω | 4 × 85W @ 2Ω | 4 × 45W @ 4Ω | 4 × 80W @ 2Ω |
Typical Output Power | 4 × 48W @ 4Ω | 4 × 50W @ 4Ω | 4 × 41W @ 4Ω | 4 × 51W @ 4Ω |
Supply Voltage Range | 8V – 18V | 8V – 18V | 8V – 18V | 8V – 18V |
Amplifier Class | Class AB (MOSFET) | Class AB (MOSFET) | Class AB (PNP/NPN) | Class AB (BCD Technology) |
Protection Features | Short-circuit, Thermal, Reverse Battery, Load dump, DC Offset | Short-circuit, Thermal, Reverse Battery, Load dump, DC Offset | Short-circuit, Thermal, Reverse Battery, Load dump | Short-circuit, Thermal, Reverse Battery, Load dump |
Bootstrap Capacitor | Not required | Not required | Not required | Not required |
Mute/Standby Function | Yes | Yes | Yes | Yes |
Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
TDA7850: Best direct equivalent with slightly higher output power, ideal for demanding audio applications.
TDA7388: More economical choice, suitable for standard automotive audio applications.
TDA7560: Offers high power suitable for high-end systems, though availability may vary as it is nearing end-of-life.
FAQ
1. How is the MUTE functionality utilized on the TDA7851L?
The MUTE pin enables silent operation by temporarily disabling audio outputs without turning off the entire device, useful during channel switching or signal interruptions.
2. What is the purpose of the SVR (Supply Voltage Ripple) pin?
The SVR pin helps minimize noise and hum by filtering power supply ripple, resulting in cleaner, clearer audio output.
3. What type of speakers can the TDA7851L drive?
The TDA7851L can efficiently drive automotive speakers typically rated from 4Ω to 8Ω impedance, suitable for most standard vehicle audio applications.