LM51561
- Functional Safety-Capable
- Suited for wide input operating range battery applications
- 3.5-V to 60-V operating range (65-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 65 V
- Minimized battery drain
- Low shutdown current (IQ ≤ 2.6 µA)
- Low operating current (IQ ≤ 490 µA)
- Small solution size and low cost
- Maximum switching frequency of 2.2 MHz
- 12-Pin WSON package (3 mm × 2 mm)
- Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
- EMI mitigation
- Selectable dual random spread spectrum
- Lead-less package
- Higher efficiency with low-power dissipation
- 100-mV ±7% accurate current limit threshold
- Strong 1.5-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 2.2 MHz
- Integrated protection features
- Constant peak current limiting over input voltage
- Optional hiccup mode overload protection (see the Device Comparison Table)
- Programmable line UVLO
- OVP protection
- Thermal shutdown
- ±1% accuracy feedback reference
- Supports additional slope compensation
- Programmable soft start
- PGOOD indicator
- Create a custom design using the LM5156x with the WEBENCH power designer
The LM5156x (LM5156 and LM51561) device 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 LM5156x 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.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LM5156x 2.2-MHz Wide VIN 65-V Non-synchronous Boost/SEPIC/Flyback Controller with Dual Random Spread Spectrum datasheet | PDF | HTML | 2021年 1月 28日 |
Application note | How to Implement the Soft Start in a Flyback | PDF | HTML | 2023年 7月 10日 | |
Application note | How to Design a Boost Converter Using the LM5156 (Rev. A) | PDF | HTML | 2022年 11月 14日 | |
Application note | EMI Reduction Technique, Dual Random Spread Spectrum (Rev. A) | 2022年 10月 19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 | |
Technical article | Lowering audible noise in automotive applications with TI’s DRSS technology | PDF | HTML | 2021年 3月 18日 | |
EVM User's guide | LM5156EVM-BST User's Guide (Rev. A) | 2020年 6月 22日 |
設計與開發
如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。
LM5156EVM-BST — LM5156 升壓控制器評估模組
The LM5156EVM-BST evaluation module showcases the features and performance of the LM5156-Q1 wide-input voltage non-synchronous boost controller. The standard configuration is designed to provide a regulated output of 12 V at 3 A from an input of 3 V to 12 V, switching at 440 kHz.
This EVM is (...)
Unencrypted LM5156-Q1 PSpice Transient Model Package (Rev. H)
SNVC240 — LM5155/56 Flyback Controller Quick Start Calculator
支援產品和硬體
產品
AC/DC 和 DC/DC 控制器 (外部 FET)
硬體開發
開發板
SNVR481 — LM5155/56 SEPIC Controller Quick Start Calculator
支援產品和硬體
產品
AC/DC 和 DC/DC 控制器 (外部 FET)
硬體開發
開發板
PMP31246 — 具調變輸出電壓的非連續模式 SEPIC 參考設計
PMP30805 — 小型汽車 SEPIC 參考設計
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WSON (DSS) | 12 | Ultra Librarian |
訂購與品質
- 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
- 晶圓廠位置
- 組裝地點