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Overview
| Topology | Buck Converter |
| Input voltage | 4.5-24 V |
| Switching frequency | 400-500 kHz |
| IC revision | A |
Description
The IS32AP2123 is a Class-D audio amplifier for driving a mono speaker in BTL (Bridge-Tied-Load) configuration. It is capable of delivering 20W into 4Ω speaker at less than 1% THD+N from a 14.4V power supply. It is a mono Class-D audio amplifier designed for automotive applications, such as emergency call (eCall), telematics, and instrument cluster, and infotainment applications. With a wide operating voltage range of 4.5V to 24V makes it ideal for start/stop or backup battery operation. The IS32AP2123 comes with onboard load diagnostic hardware accessible via a standard I2C port. The internal diagnostics evaluate the output impedance to check for shorts across the outputs, to the battery, or to ground. The I2C interface allows the system to read diagnostic and protection device parameters.The integrated 40V load-dump protection reduces external voltage clamp cost and size, for reliable automotive audio systems. The highly efficient (85%) IS32AP2123 comes in a thermally enhanced eTSSOP-16 package requiring no heatsink for typical operation.
Features
- 4.5V to 24V operating range
- Mono BTL digital power amplifier
- Differential analog input
- 24W output power at 10% THD+N into 4Ω
- 70dB power supply rejection ratio (PSRR)
- Up to 85% efficiency into 4Ω
- Support spread spectrum to optimize EMI
- I2C Interface
- Query and set up critical device parameters
- Automatic load diagnostic functions during power up and after fault events:
- Open and shorted output load
- Output-to-power and -ground shorts
- Support AM avoidance (400 and 500kHz modulation frequency)
- AGC function with adjustable power limiter
- Protection and monitoring functions:
- Short-circuit (to ground, VCC or output-to-output) protection
- 40V load dump protection
- Output DC level detection while music is playing
- Over temperature protection
- Over and under voltage protection
- Dynamic temperature control to avoid thermal run away
- Designed for automotive EMC requirements
- AEC-Q100 Qualified
- -40°C to +125°C ambient operating temperature
Typical applications
- Emergency call (eCall), telematics, and instrument cluster, and infotainment applications
- Automotive applications
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT (A) | RDC max. (mΩ) | fres (MHz) | Size | Version | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7443251000 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCI SMT Flat Wire High Current Inductor | 10 | 9.5 | – | 17.93 | 21 | 1050 | SMT | 4 | 8.5 | 16.3 | Superflux | ||
 | 744771122 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PD SMT Power Inductor | 22 | 6 | 3.7 | 36 | 13.5 | 1260 | Standard | 3.7 | 4.8 | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7443251000 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | |
| 744771122 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT (A) | RDC max. (mΩ) | fres (MHz) | Size | Version | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | Material | Samples |
|---|