Key facts
- Brand
- STMicroelectronics
- Model
- L9904
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-08
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STMicroelectronics L9904 Motor Bridge Controller Datasheet
The L9904 is a control circuit designed for power MOS bridge drivers in automotive applications. It features an integrated charge pump to drive high-side switches, reverse battery protection, and compatibility with the ISO 9141 bus interface.
Key capabilities include programmable cross conduction protection time, real-time diagnostics via an open-drain output, and various protection mechanisms such as overvoltage, undervoltage, short circuit, and thermal shutdown. The device operates with a supply voltage ranging from 8V to 28V or can utilize an internal step-up converter for 6V operation.
STMicroelectronics L9904 specifications
| Operating Supply Voltage | 8V to 28V (6V with step-up converter) |
|---|---|
| Overvoltage Max. | 40V |
| Quiescent Current (Standby) | Less than 50uA |
| PWM Operation Frequency | Up to 30kHz |
| Operating Junction Temperature | -40 to 150 °C |
Source: STMicroelectronics L9904 Motor Bridge Controller Datasheet
All STMicroelectronics L9904 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the operating supply voltage range?
The device operates with a supply voltage from 8V to 28V, or 6V if an implemented step-up converter is used.
From: STMicroelectronics L9904 Motor Bridge Controller Datasheet
Does the L9904 include reverse battery protection?
Yes, it includes a charge pump for driving a power MOS as reverse battery protection.
From: STMicroelectronics L9904 Motor Bridge Controller Datasheet
What voltage level must be exceeded for the device to switch to a specific startup state?
The device switches to a specific behavior when the voltage over Cpgg exceeds 3.5V.
From: STMicroelectronics AN2229 L9903/L9904 Startup Behavior Application Note
What is the minimum supply voltage required before enabling the device?
The supply voltage (Vs) must be greater than 7V before the EN pin is set high.
From: STMicroelectronics AN2229 L9903/L9904 Startup Behavior Application Note