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The L9924L is a controlled multifunctional alternator regulator intended to be used in cars, commercial and agricultural vehicles, with support for 12 V and 24 V systems. The control can be achieved through different communication protocols: LIN, RCV, PCM, C_term, BSS. It is a System-In-Package solution with smart power alternator regulator IC coupled with a 8-bit microcontroller (non-monolithic approach). It includes the control section, fault diagnostic circuit which drives a warning lamp, and the protection against short circuits.
This device regulates in closed loop the output of an automotive generator by controlling the field winding current by means of a Pulse-Width Modulation (PWM) of an external high side or low side driver at fixed frequency.
Key Features
- AEC-Q100 qualified
- System in package smart power alternator regulator and 8-bit microcontroller (non-monolithic approach)
- Protected high/low side field pre-driver for external MOS
- Field short circuit protection
- Regulated voltage driven by ECU (programmable protocol driven)
- Regulated voltage thermally compensated (without protocol)
- Lamp driver (wake up and warning detection)
- Diagnostic via LIN
- LIN 2.1 interface for programming and control
- Self start function
- Load response control (LRC)
- Field monitor (FM) output
- Thermal shutdown
- Package TQFP44EP (10 x 10 mm)
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| L9924LTR |
Active
|
TQFP 44 10x10x1.0 | Automotive | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| L9924LTR | No availability of distributors reported, please contact our sales office |
Active
|
EAR99 | NEC | Tape And Reel | TQFP 44 10x10x1.0 | -40 | 150 | PHILIPPINES | |||
Marketing Status
ActiveECCN (US)
EAR99Budgetary Price (US$)*/Qty
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors
