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参数资料
| 型号： | LM2592HV3.3MWC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 4 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, UUC |
| 封装： | WAFER |
| 文件页数： | 24/24页 |
| 文件大小： | 720K |
| 代理商： | LM2592HV3.3MWC |
Block Diagram
10129483
PIN FUNCTIONS
+V
IN (Pin 1) — This is the positive input supply for the IC
switching regulator. A suitable input bypass capacitor must
be present at this pin to minimize voltage transients and to
supply the switching currents needed by the regulator.
Output (Pin 2) — Internal switch. The voltage at this pin
switches between approximately (+V
IN VSAT) and approxi-
mately 0.5V, with a duty cycle of V
OUT/VIN.
Ground (Pin 3) — Circuit ground.
Feedback (Pin 4) — Senses the regulated output voltage to
complete the feedback loop. This pin is directly connected to
the Output for the fixed voltage versions, but is set to 1.23V
by means of a resistive divider from the output for the
Adjustable version. If a feedforward capacitor is used (Ad-
justable version), then a negative voltage spike is generated
on this pin whenever the output is shorted. This happens
because the feedforward capacitor cannot discharge fast
enough, and since one end of it is dragged to Ground, the
other end goes momentarily negative. To prevent the energy
rating of this pin from being exceeded, a small-signal Schot-
tky diode to Ground is recommended for DC input voltages
above 40V whenever a feedforward capacitor is present
(See
Figure 1). Feedforward capacitor values larger than 0.1
F are not recommended for the same reason, whatever be
the DC input voltage.
ON /OFF (Pin 5) — The regulator is in shutdown mode,
drawing about 90 A, when this pin is driven to a high level
(
≥ 2.0V), and is in normal operation when this Pin is left
floating or driven to a low level (
≤ 0.6V). The typical value of
the threshold is 1.3V and the voltage on this pin must not
exceed 25V.
LM2592HV
www.national.com
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2592HVS-3.3 | 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 |
| LM2592HVS-3.3/NOPB | 功能描述:直流/直流开关转换器 PWR CONVERTER 150KHz 2A ST-DOWN VLTG REG 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 |
| LM2592HVS-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 |
| LM2592HVS-5.0/NOPB | 功能描述:直流/直流开关转换器 PWR CONVERTER 150KHz 2A ST-DOWN VLTG REG 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 |
| LM2592HVS-5.0/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu |
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