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AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM3224

現行

615kHz/1.25MHz 升壓 PWM DC/DC 轉換器

立即訂購
產品規格表

LM3224

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 2.7 Vin (max) (V) 7 Switching frequency (min) (kHz) 615 Switching frequency (max) (kHz) 1250 Features Enable, Nonsynchronous rectification Vout (min) (V) 1.26 Vout (max) (V) 20 Iq (typ) (A) 0.0013
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 2.7 Vin (max) (V) 7 Switching frequency (min) (kHz) 615 Switching frequency (max) (kHz) 1250 Features Enable, Nonsynchronous rectification Vout (min) (V) 1.26 Vout (max) (V) 20 Iq (typ) (A) 0.0013
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Operating Voltage Range of 2.7V to 7V
  • 615kHz/1.25MHz Pin Selectable Frequency Operation
  • Over Temperature Protection
  • Optional Soft-Start Function
  • 8-Lead VSSOP Package

All trademarks are the property of their respective owners.

  • Operating Voltage Range of 2.7V to 7V
  • 615kHz/1.25MHz Pin Selectable Frequency Operation
  • Over Temperature Protection
  • Optional Soft-Start Function
  • 8-Lead VSSOP Package

All trademarks are the property of their respective owners.

The LM3224 is a step-up DC/DC converter with a 0.15Ω (typ.), 2.45A (typ.) internal switch and pin selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM3224 is an ideal part for biasing TFT displays. With the high current switch it is also ideal for driving high current white LEDs for flash applications. The LM3224 can be operated at switching frequencies of 615kHz and 1.25MHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting frequency compensation, which makes possible the use of small, low ESR ceramic capacitors at the output. An external soft-start pin allows the user to control the amount of inrush current during start up. The LM3224 is available in a low profile 8-lead VSSOP package.

The LM3224 is a step-up DC/DC converter with a 0.15Ω (typ.), 2.45A (typ.) internal switch and pin selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM3224 is an ideal part for biasing TFT displays. With the high current switch it is also ideal for driving high current white LEDs for flash applications. The LM3224 can be operated at switching frequencies of 615kHz and 1.25MHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting frequency compensation, which makes possible the use of small, low ESR ceramic capacitors at the output. An external soft-start pin allows the user to control the amount of inrush current during start up. The LM3224 is available in a low profile 8-lead VSSOP package.
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類型 標題 日期
* Data sheet LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter datasheet (Rev. C) 2013年 3月 7日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
EVM User's guide AN-1394 LM3224 Evaluation Board (Rev. A) 2013年 4月 26日

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