LMG5126
- Input voltage 6.5V to 42V
- Minimum 2.5V for V(BIAS) ≥ 6.5V or VOUT ≥ 6V
- Output Voltage 6V to 60V
- 2% accuracy, internal feedback resistors
- Bypass operation for VI
> VOUT
- Boot refresh out of audio >20kHz
- Dynamic output voltage tracking
- Digital PWM tracking (DTRK)
- Analog tracking (ATRK)
- Over voltage protection (65V, 50V, 35V, 25V)
- Low shutdown ISD of 5µA typical (100uA maximum)
- Low operating IQ of 1.5mA typical (2.5mA maximum)
- Stacking with interleaved multiphase
operation
- Up to 4-devices without external clock
- Switching frequency from 300kHz to
2.5MHz
- Synchronization to external clock (SYNCIN)
- Spread Spectrum (DRSS)
- Dynamically selectable switching modes (FPWM, Diode emulation)
- Current sense resistor or DCR sensing
- Average inductor current monitor
- Average input current limit
- Selectable current limit (29mV or 60mV)
- Selectable delay time (DLY)
- Power good indicator
- Programmable VI undervoltage lockout (UVLO)
- Lead-less RLF-22 package with wettable flanks
- Create a custom design using the LMG5126 with the WEBENCH Power Designer
The LMG5126 is a stackable multiphase synchronous boost converter. The device provides a regulated output voltage for lower or equal input voltage also supporting VI to VOUT bypass mode to save power. Up to 4 devices can be stacked with or without external clock.
VOUT can be dynamically programmed using the digital or analog ATRK/DTRK function. VI can be as low as 2.5V after startup as the internal VCC supply is automatically switched from VBIAS to VOUT for VBIAS < 6.5V. The fixed switching frequency is set between 300kHz and 2.5MHz via a resistor on the RT-pin or the SYNCIN clock. The switching modes FPWM or Diode emulation can be changed during operation.
The implemented protections peak current limit, average input current limit, 120% input current limit, average inductor current monitor, over- and undervoltage protection or the thermal shutdown protect the device and the application.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LMG5126 Wide-Input, 2.5MHz, Boost Converter datasheet (Rev. B) | PDF | HTML | 2026/5/20 | ||
| 技術文章 | 整合式 GaN 轉換器重新定義 高電流電源供應設計的四種方法 | PDF | HTML | PDF | HTML | 2026/4/24 | ||
| 證書 | LMG5126EVM EU Declaration of Conformity (DoC). | 2025/9/8 |
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)。
LMG5126EVM — LMG5126 評估模組
LMG5126 評估模組 (EVM) 展示了 LMG5126 寬輸入電壓同步 GaN 升壓轉換器的功能和性能。此 EVM 旨在簡化配置，讓使用者能夠在同一模組上評估多種不同應用。標準配置旨在提供穩定的 24V 輸出電壓，並以 400kHz 的頻率進行切換。輸出電壓可透過 ATRK、DTRK 針腳進行動態調整。
LMG5126-CALC — LMG5126 quick start calculator
PMP31404 — 3V 至 42V 同步 GaN 升壓轉換器參考設計
這款參考設計旨在實現高升壓比與高效率。這款設計可在寬廣的輸入電壓範圍內運作，最低輸入電壓為 3V，此電壓由內建氮化鎵 (GaN) 場效電晶體 (FET) 的 LMG5126 升壓轉換器提供。這款參考設計具備多項功能，例如展頻、電流限制、過熱自動開機、過電壓保護及欠壓鎖定。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN-FCRLF (VBT) | 22 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。