LM34966-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C TA
- Maximum operating temperature 150°C TJ
- Functional Safety-Capable
- Suited for wide input operating range car battery applications
- 3.5-V to 40-V operating range (45-V abs max)
- 2.97-V to 16-V when BIAS = VCC
- Minimum boost supply voltage 1.5 V when BIAS ≥ 3.5 V
- Input transient protection up to 45 V
- Minimized battery drain
- Low shutdown current ( IQ ≤ 2.6 µA )
- Low operating current ( IQ ≤ 490 µA )
- Small solution size and low cost
- Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
- Minimized undershoot during cranking (start-stop application)
- Higher efficiency with low-power dissipation
- 100-mV ±7% accurate current limit threshold
- Strong 1.0-A peak standard MOSFET driver
- Supports external VCC supply
- Avoid AM band interference and crosstalk
- Optional clock synchronization
- Dynamically programmable switching frequency from 100 kHz to 500 kHz
- Integrated protection features
- Constant peak current limiting over input voltage
- Hiccup mode overload protection
- Programmable line UVLO
- OVP protection
- Thermal shutdown
- Accurate ±1% accuracy feedback reference
- Programmable extra slope compensation
- Adjustable soft start
- PGOOD indicator
- 14-Pin HTSSOP package (5.0 mm × 4.4 mm)
- Create a custom design using the LM34966-Q1 with the WEBENCH power designer
The LM34966-Q1 is a wide input range, non-synchronous boost controller that uses peak current mode control. The device can be used in boost, SEPIC, and flyback topologies. The device can start up from a 1-cell battery with a minimum of 2.97 V if the BIAS pin is connected to the VCC pin. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.5 V. The internal VCC regulator also supports BIAS pin operation up to 40 V (45-V absolute maximum) for automotive load dump. The switching frequency is dynamically programmable with an external resistor from 100 kHz to 500 kHz.
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檢視所有 4 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LM34966-Q1 500kHz Wide VIN Non-synchronous Boost/SEPIC/Flyback Controller datasheet | PDF | HTML | 2020年 9月 23日 |
| Functional safety information | LM34966-Q1, LM5156x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution (Rev. C) | PDF | HTML | 2021年 4月 28日 | |
| EVM User's guide | LM34966EVM-FLY Flyback Evaluation Module | PDF | HTML | 2020年 9月 28日 | |
| Certificate | LM34966EVM-FLY EU Declaration of Conformity (DoC) | 2020年 9月 10日 |
設計與開發
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開發板
LM34966EVM-FLY — LM34966 返馳式控制器評估模組
The LM34966EVM-FLY evaluation module showcases the features and performance of the LM34966-Q1 as wide input non-synchronous flyback controller. The standard configuration is designed to provide a regulated output of 5V at 4A from an input of 18V to 36V, switching at 250 kHz. This evaluation (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTSSOP (PWP) | 14 | Ultra Librarian |
訂購與品質
內含資訊：
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊：
- 晶圓廠位置
- 組裝地點