参数资料
型号: LM2588T-5.0/NOPB
厂商: National Semiconductor
文件页数: 21/38页
文件大小: 0K
描述: IC REG MULTI CONFIG 5V TO220-7
产品培训模块: SIMPLE SWITCHER® Regulators
标准包装: 45
系列: SIMPLE SWITCHER®
类型: 升压(升压),回扫,正向转换器
输出类型: 固定
输出数: 1
输出电压: 5V
输入电压: 4 V ~ 40 V
PWM 型: 电流模式
频率 - 开关: 100kHz ~ 200kHz
电流 - 输出: 5A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 通孔
封装/外壳: TO-220-7 成形引线
包装: 管件
供应商设备封装: TO-220-7
产品目录页面: 1304 (CN2011-ZH PDF)
配用: 551011367-051-ND - BOARD WEBENCH BUILD IT LM2586/88
其它名称: *LM2588T-5.0
LM2588T-5.0
Figure 43. T1 - Top View
Schott 67141450
Figure 45. T3 - Top View
Schott 67140920
SNVS117D – APRIL 1998 – REVISED APRIL 2013
Figure 44. T2 - Top View
Schott 67140860
Figure 46. T4 - Top View
Schott 67140930
Step-Up (Boost) Regulator Operation
Figure 47 shows the LM2588 used as a step-up (boost) regulator. This is a switching regulator that produces an
output voltage greater than the input supply voltage.
A brief explanation of how the LM2588 Boost Regulator works is as follows (refer to Figure 47 ). When the NPN
switch turns on, the inductor current ramps up at the rate of V IN /L, storing energy in the inductor. When the
switch turns off, the lower end of the inductor flies above V IN , discharging its current through diode (D) into the
output capacitor (C OUT ) at a rate of (V OUT ? V IN )/L. Thus, energy stored in the inductor during the switch on time
is transferred to the output during the switch off time. The output voltage is controlled by adjusting the peak
switch current, as described in the Flyback Regulator section.
Figure 47. 12V Boost Regulator
By adding a small number of external components (as shown in Figure 47 ), the LM2588 can be used to produce
a regulated output voltage that is greater than the applied input voltage. The switching waveforms observed
during the operation of this circuit are shown in Figure 48 . Typical performance of this regulator is shown in
Copyright ? 1998–2013, Texas Instruments Incorporated
Product Folder Links: LM2588
21
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LM2588T-ADJ 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
LM2588T-ADJ 制造商:Texas Instruments 功能描述:SWITCHING REG 5A ADJ 2588 TO2207
LM2588T-ADJ/NOPB 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
LM258AD 功能描述:运算放大器 - 运放 Dual Operational Amplifier RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比(最小值):63 dB 输入补偿电压:1 mV 输入偏流(最大值):10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel
LM258ADE4 功能描述:运算放大器 - 运放 Dual Operational Amplifier RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比(最小值):63 dB 输入补偿电压:1 mV 输入偏流(最大值):10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel