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LM27213

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5V 至 30V 滞后同步降压控制器

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数据表

LM27213

正在供货
数据表 立即订购

产品详情

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.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM27213 Single Phase Hysteretic Buck Controller 数据表 (Rev. A) 2013年 3月 28日
应用手册 AN-1487 Current Mode Hysteretic Buck Regulators (Rev. B) 2013年 5月 5日
应用手册 Application Note 1487 Current Mode Hysteretic Buck Regulators (cn) 2006年 8月 29日

设计和开发

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封装 引脚 下载
TSSOP (DGG) 48 查看选项
WQFN (RHS) 48 查看选项
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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