Converters | LM2595

降压稳压器，开关，1.0 A

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LM2595 系列降压开关稳压器是单片集成电路，提供了步降（降压）开关稳压器的所有有效功能，能够驱动 1A 负载，且具有卓越线路和负载调节。这些降压开关稳压器均须极少的外部部件，使用简单，包括了内部频率补偿和固定频率振荡器。LM2595 系列以 150 kHz 开关频率运行，因此比更低频率开关稳压器所需滤波器部件尺寸更小。提供带若干不同引线弯曲选项的标准 5 引线 TO-220 封装，以及 5 引线 D2PAK 表面贴装封装。适用于 LM2595 系列的标准电感器系列从若干不同制造商提供。此功能大幅简化了开关模式电源的设计。其他功能包括指定输入电压和输出负载条件下保证输出电压的 +/-4% 允差范围，振荡器频率为 +/-15%。包含了外部关断，待机电流为 80 uA。自保护功能包括用于降低输出开关电流限制的两级频率，以及用于故障条件下完整保护的高温关断。参见用于 3.0A 的 LM2596，以及用于 0.5A 的 LM2594。

  • Simple high-efficiency step-down (buck) regulator
  • On-card switching regulators
  • Positive to negative converter
  • LCD-TV SMPS
  • Adjustable output voltage range, 1.2V to 37V +/-4% max over line and load
  • Available in TO-220 and D2PAK packages
  • Guaranteed 1A output load current
  • Input voltage range up to 40V
  • Excellent line and load regulation specifications
  • 150 kHz fixed frequency internal oscillator
  • TTL shutdown capability
  • Low power standby mode, Iq typically 80 µA
  • Uses readily available standard inductors
  • Thermal shutdown and current limit

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LM2595DSADJR4G

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Active

CAD Model

Pb

A

H

P

D2PAK-5

936A-02

1

235

REEL

800

Y

Step-Down

Voltage Mode

4.5

40

1.25

1

85

150

$0.9602

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