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DC/DC 轉換器

LM2698

現行

SIMPLE SWITCHER® 1.35A 升壓穩壓器

立即訂購
產品規格表

LM2698

現行
立即訂購

產品詳細資料

Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 12 Vin (min) (V) 2.2 Vout (max) (V) 17 Vout (min) (V) 2.2 Switch current limit (typ) (A) 1.35 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0013 Duty cycle (max) (%) 85
Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 12 Vin (min) (V) 2.2 Vout (max) (V) 17 Vout (min) (V) 2.2 Switch current limit (typ) (A) 1.35 Features Enable, Nonsynchronous rectification Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0013 Duty cycle (max) (%) 85
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • 1.9-A, 0.2-Ω Internal Switch (Typical)
  • Operating Voltage as Low as 2.2 V
  • 600 kHz to 1.25 MHz Adjustable Frequency Operation
  • Switchers Made Simple® Software
  • 8-Pin VSSOP Package
  • 1.9-A, 0.2-Ω Internal Switch (Typical)
  • Operating Voltage as Low as 2.2 V
  • 600 kHz to 1.25 MHz Adjustable Frequency Operation
  • Switchers Made Simple® Software
  • 8-Pin VSSOP Package

The LM2698 device is a general purpose PWM boost converter. The 1.9-A, 18-V, 0.2-Ω internal switch enables the LM2698 to provide efficient power conversion to outputs ranging from 2.2 V to 17 V. It can operate with input voltages as low as 2.2 V and as high as 12 V. Current-mode architecture provides superior line and load regulation and simple frequency compensation over the device’s 2.2 V to 12 V input voltage range. The LM2698 sets the standard in power density and is capable of supplying 12 V at 400 mA from a 5-V input. The LM2698 can also be used in flyback or SEPIC topologies.

The LM2698 SIMPLE SWITCHER® features a pin selectable switching frequency of either 600 kHz or 1.25 MHz. This promotes flexibility in component selection and filtering techniques. A shutdown pin is available to suspend the device and decrease the quiescent current to 5 µA. 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. Switchers Made Simple® software is available to ensure a quick, easy, and assured design. The LM2698 is available in a low-profile, 8-pin VSSOP (DGK) package.

The LM2698 device is a general purpose PWM boost converter. The 1.9-A, 18-V, 0.2-Ω internal switch enables the LM2698 to provide efficient power conversion to outputs ranging from 2.2 V to 17 V. It can operate with input voltages as low as 2.2 V and as high as 12 V. Current-mode architecture provides superior line and load regulation and simple frequency compensation over the device’s 2.2 V to 12 V input voltage range. The LM2698 sets the standard in power density and is capable of supplying 12 V at 400 mA from a 5-V input. The LM2698 can also be used in flyback or SEPIC topologies.

The LM2698 SIMPLE SWITCHER® features a pin selectable switching frequency of either 600 kHz or 1.25 MHz. This promotes flexibility in component selection and filtering techniques. A shutdown pin is available to suspend the device and decrease the quiescent current to 5 µA. 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. Switchers Made Simple® software is available to ensure a quick, easy, and assured design. The LM2698 is available in a low-profile, 8-pin VSSOP (DGK) package.
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技術文件

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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 LM2698 SIMPLE SWITCHER® 1.35-A Boost Regulator datasheet (Rev. F) PDF | HTML 2016/9/15
應用說明 Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024/3/25
選擇指南 Power Management Guide 2018 (Rev. R) 2018/6/25
應用說明 AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013/4/24
使用指南 AN-1202 LM2698 Demoboard (Rev. C) 2013/4/24
應用說明 AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013/4/23
應用說明 AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013/4/23
應用說明 AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013/4/23
應用說明 AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013/4/23
應用說明 AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013/4/23
應用說明 Input and Output Capacitor Selection 2005/9/19
更多文件說明 SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005/7/12
應用說明 AN-643 EMI/RFI Board Design (Rev. B) 2004/5/3

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