首頁 電源管理 AC/DC & DC/DC controllers (external FET)
首頁
電源管理
AC/DC & DC/DC controllers (external FET)

LM27213

現行

5 V 至 30 V 磁滯同步降壓控制器

立即訂購
產品規格表

LM27213

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 5 Vin (max) (V) 30 Iout (max) (A) 25 Operating temperature range (°C) -5 to 110 Rating Catalog Vout (min) (V) 0.7 Vout (max) (V) 1.708 Iq (typ) (A) 0.003 Duty cycle (max) (%) 85 Number of phases 1
Vin (min) (V) 5 Vin (max) (V) 30 Iout (max) (A) 25 Operating temperature range (°C) -5 to 110 Rating Catalog Vout (min) (V) 0.7 Vout (max) (V) 1.708 Iq (typ) (A) 0.003 Duty cycle (max) (%) 85 Number of phases 1
TSSOP (DGG) 48 101.25 mm² 12.5 x 8.1 WQFN (RHS) 48 49 mm² 7 x 7
  • Ideal Load and Line Transient Responses
  • 5V to 30V Input Range
  • On-Chip Gate Drive
  • Convenient CLK_EN# Signal
  • Input Under-Voltage Lockout
  • High Light-Load Efficiency
  • Adjustable Analog Soft Start
  • Peak Current Limit
  • Over-Voltage Protection
  • Error Correction for Good Static Accuracy
  • ±1% DAC Accuracy Over Temperature
  • Interfaces with the LM2647 System Supply
  • Available in TSSOP or WQFN Packages

All trademarks are the property of their respective owners.

  • Ideal Load and Line Transient Responses
  • 5V to 30V Input Range
  • On-Chip Gate Drive
  • Convenient CLK_EN# Signal
  • Input Under-Voltage Lockout
  • High Light-Load Efficiency
  • Adjustable Analog Soft Start
  • Peak Current Limit
  • Over-Voltage Protection
  • Error Correction for Good Static Accuracy
  • ±1% DAC Accuracy Over Temperature
  • Interfaces with the LM2647 System Supply
  • Available in TSSOP or WQFN Packages

All trademarks are the property of their respective owners.

The LM27213 is a single-phase synchronous buck regulator controller designed to fully support a portable microprocessor. On-chip gate drive makes for a compact, single chip solution. Output currents in excess of 25 Amps are possible.

The IC employs a current mode hysteretic control mechanism. Inductor current is sensed through a low value sense resistor.

The LM27213 will operate over an input voltage range of 5V to 30V. The output voltage is programmed through 6 Voltage Identification (VID) pins and ranges from 0.700V to 1.708V in 64 steps.

Since the error in the output voltage directly sets the inductor current, the dynamic response to a large, fast load transient is close to a square wave. This is optimal for mode transition requirements. Also, due to the intrinsic input voltage feedforward characteristic of hysteretic control, the line transient response is excellent as well.

The IC provides cycle-by-cycle peak current limit, over-voltage protection, and a power good signal. The LM27213 fully supports the Stop CPU and Sleep modes offered by some processors. When enabled, the IC enters a power-saving “diode emulator” mode which helps prolong battery runtime for portable systems.

The LM27213 also has a soft start feature for the external adjustment of soft start speed.

The LM27213 is a single-phase synchronous buck regulator controller designed to fully support a portable microprocessor. On-chip gate drive makes for a compact, single chip solution. Output currents in excess of 25 Amps are possible.

The IC employs a current mode hysteretic control mechanism. Inductor current is sensed through a low value sense resistor.

The LM27213 will operate over an input voltage range of 5V to 30V. The output voltage is programmed through 6 Voltage Identification (VID) pins and ranges from 0.700V to 1.708V in 64 steps.

Since the error in the output voltage directly sets the inductor current, the dynamic response to a large, fast load transient is close to a square wave. This is optimal for mode transition requirements. Also, due to the intrinsic input voltage feedforward characteristic of hysteretic control, the line transient response is excellent as well.

The IC provides cycle-by-cycle peak current limit, over-voltage protection, and a power good signal. The LM27213 fully supports the Stop CPU and Sleep modes offered by some processors. When enabled, the IC enters a power-saving “diode emulator” mode which helps prolong battery runtime for portable systems.

The LM27213 also has a soft start feature for the external adjustment of soft start speed.
open-in-new 尋找其它 AC/DC & DC/DC controllers (external FET)
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 2
類型 標題 日期
* Data sheet LM27213 Single Phase Hysteretic Buck Controller datasheet (Rev. A) 2013年 3月 28日
Application note AN-1487 Current Mode Hysteretic Buck Regulators (Rev. B) 2013年 5月 5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)。

封裝 引腳 下載
TSSOP (DGG) 48 檢視選項
WQFN (RHS) 48 檢視選項
適用 TI 的評估品項標準條款與條件。

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
  • 資格摘要
  • 進行中可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片