Typical Performance Characteristics (Circuit of Figure 2)
Continuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD =1A
L = 47 H, C
OUT = 68 F, COUTESR=50 m
Discontinuous Mode Switching Waveforms
V
IN = 20V, VOUT = 5V, ILOAD = 300 mA
L = 15 H, C
OUT = 68 F (2x), COUTESR=25 m
01280318
Horizontal Time Base: 1 s/div
A: VSW Pin Voltage, 10 V/div.
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
01280319
Horizontal Time Base: 1 s/div
A: VSW Pin Voltage, 10 V/div.
B: Inductor Current, 0.5 A/div
C: Output Ripple Voltage, 20 mV/div AC-Coupled
Load Transient Response for Continuous Mode
V
IN = 20V, VOUT = 5V, ILOAD =1A
L = 47 H, C
OUT = 68 F, COUTESR=50 m
Load Transient Response for Discontinuous Mode
V
IN = 20V, VOUT = 5V,
L = 47 H, C
OUT = 68 F, COUTESR=50 m
01280320
Horizontal Time Base: 50 s/div
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 200 mA to 1A Load Pulse
01280321
Horizontal Time Base: 200 s/div
A: Output Voltage, 100 mV/div, AC-Coupled.
B: Load Current: 100 mA to 400 mA Load Pulse
LM2675
www.national.com
7
相关PDF资料
LM2682MX/NOPB SWITCHED CAPACITOR CONVERTER, 15 kHz SWITCHING FREQ-MAX, PDSO8
LM2682M/NOPB SWITCHED CAPACITOR CONVERTER, 15 kHz SWITCHING FREQ-MAX, PDSO8
LM2685MTCX/NOPB SWITCHED CAPACITOR REGULATOR, 180 kHz SWITCHING FREQ-MAX, PDSO14
LM2686MTCX/NOPB SWITCHED CAPACITOR REGULATOR, 180 kHz SWITCHING FREQ-MAX, PDSO14
LM2787BPX/NOPB 0.01 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PBGA8
LM2787TP/NOPB 0.01 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PBGA8
LM2787BP/NOPB 0.01 A SWITCHED CAPACITOR REGULATOR, 450 kHz SWITCHING FREQ-MAX, PBGA8
LM285AH-1.2 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.235 V, MBCY2
相关代理商/技术参数
LM2675-5.0EVAL 功能描述:电源管理IC开发工具 LM2675-5.0 EVAL BOARD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
LM2675-5.0EVAL/NOPB 制造商:National Semiconductor Corporation 功能描述:Semi,Regulator,Eval
LM2675EP 制造商:NSC 制造商全称:National Semiconductor 功能描述:Enhanced Plastic SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
LM2675LD-12 制造商:NSC 制造商全称:National Semiconductor 功能描述:SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
LM2675LD-12/NOPB 功能描述:IC REG BUCK 12V 1A 16LLP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:SIMPLE SWITCHER® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:降压(降压) 输出类型:固定 输出数:1 输出电压:3.3V 输入电压:4.5 V ~ 24 V PWM 型:- 频率 - 开关:- 电流 - 输出:125mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 包装:Digi-Reel® 供应商设备封装:SOT-6 其它名称:MAX1836EUT33#TG16DKR
LM2675LD-3.3 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:
LM2675LD-3.3/NOPB 功能描述:IC REG BUCK 3.3V 1A 16LLP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:SIMPLE SWITCHER® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:降压(降压) 输出类型:固定 输出数:1 输出电压:3.3V 输入电压:4.5 V ~ 24 V PWM 型:- 频率 - 开关:- 电流 - 输出:125mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 包装:Digi-Reel® 供应商设备封装:SOT-6 其它名称:MAX1836EUT33#TG16DKR
LM2675LD-5.0 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT