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LM2677的基本参数
  • 制造厂商:TI
  • 产品类别:电源管理
  • 技术类目:直流/直流开关稳压器 - 降压稳压器
  • 功能描述:具有同步的 SIMPLE SWITCHER 高效 5A 降压电压稳压器
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LM2677的产品详情:

The LM2677 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 5-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low on-resistance DMOS power switch. The series consists of fixed output voltages of 3.3-V, 5-V, and 12-V and an adjustable output version.

The SIMPLE SWITCHER® concept provides for a complete design using a minimum number of external components. The switching clock frequency can be provided by an internal fixed frequency oscillator (260 kHz) or from an externally provided clock in the range of 280 kHz to 400 kHz, which allows the use of physically smaller-sized components. A family of standard inductors for use with the LM2677 are available from several manufacturers to greatly simplify the design process. The external Sync clock provides direct and precise control of the output ripple frequency for consistent filtering or frequency spectrum positioning.

The LM2677 series also has built-in thermal shutdown, current-limiting, and an ON/OFF control input that can power down the regulator to a low 50-µA quiescent-current standby condition. The output voltage is ensured to a ±2% tolerance.

LM2677的优势和特性:
  • Efficiency up to 92%
  • Simple and Easy to Design Using Off-the-Shelf External Components
  • 100-mΩ DMOS Output Switch
  • 3.3-V, 5-V, and 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions
  • 50-μA Standby Current When Switched OFF
  • ±2% Maximum Output Tolerance Over Full Line and Load Conditions
  • Wide Input Voltage Range: 8 V to 40 V
  • External Sync Clock Capability (280 kHz to 400 kHz)
  • 260-kHz Fixed Frequency Internal Oscillator
  • –40°C to 125°C Operating Junction Temperature Range
LM2677的参数(英文):
  • Vin (Min) (V)
  • 8
  • Vin (Max) (V)
  • 40
  • Vout (Min) (V)
  • 1.23
  • Vout (Max) (V)
  • 37
  • Iout (Max) (A)
  • 5
  • Iq (Typ) (uA)
  • 4200
  • Switching frequency (Min) (kHz)
  • 260
  • Switching frequency (Max) (kHz)
  • 260
  • Features
  • Frequency Synchronization, Over Current Protection
  • Rating
  • Catalog
  • Regulated outputs (#)
  • 1
  • Control mode
  • Voltage Mode
  • Duty cycle (Max) (%)
  • 91
LM2677具体的完整产品型号参数及价格(美元):

LM2677的完整型号有:LM2677S-12/NOPB、LM2677S-3.3/NOPB、LM2677S-5.0/NOPB、LM2677S-ADJ/NOPB、LM2677SD-3.3/NOPB、LM2677SD-5.0/NOPB、LM2677SD-ADJ/NOPB、LM2677SX-12/NOPB、LM2677SX-3.3/NOPB、LM2677SX-5.0/NOPB、LM2677SX-ADJ/NOPB、LM2677T-12/NOPB、LM2677T-3.3/NOPB、LM2677T-5.0/NOPB、LM2677T-ADJ/NOPB、LM2677S-5.0、LM2677T-ADJ,以下是这些产品的关键参数及官网采购报价:

LM2677S-12/NOPB,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTW)-7,包装数量MPQ:45个,MSL 等级/回流焊峰值温度:Level-3-245C-168 HR,引脚镀层/焊球材料:SN,TI官网LM2677S-12/NOPB的批量USD价格:2.97(1000+)

LM2677S-3.3/NOPB,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTW)-7,包装数量MPQ:45个,MSL 等级/回流焊峰值温度:Level-3-245C-168 HR,引脚镀层/焊球材料:SN,TI官网LM2677S-3.3/NOPB的批量USD价格:2.97(1000+)

LM2677S-5.0/NOPB,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTW)-7,包装数量MPQ:45个,MSL 等级/回流焊峰值温度:Level-3-245C-168 HR,引脚镀层/焊球材料:SN,TI官网LM2677S-5.0/NOPB的批量USD价格:2.97(1000+)

LM2677S-ADJ/NOPB,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTW)-7,包装数量MPQ:45个,MSL 等级/回流焊峰值温度:Level-3-245C-168 HR,引脚镀层/焊球材料:SN,TI官网LM2677S-ADJ/NOPB的批量USD价格:2.97(1000+)

LM2677SD-3.3/NOPB,工作温度:-40 to 125,封装:VSON (NHM)-14,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2677SD-3.3/NOPB的批量USD价格:2.475(1000+)

LM2677SD-5.0/NOPB,工作温度:-40 to 125,封装:VSON (NHM)-14,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2677SD-5.0/NOPB的批量USD价格:2.475(1000+)

LM2677SD-ADJ/NOPB,工作温度:-40 to 125,封装:VSON (NHM)-14,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2677SD-ADJ/NOPB的批量USD价格:2.475(1000+)

LM2677SX-12/NOPB,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTW)-7,包装数量MPQ:500个,MSL 等级/回流焊峰值温度:Level-3-245C-168 HR,引脚镀层/焊球材料:SN,TI官网LM2677SX-12/NOPB的批量USD价格:2.475(1000+)

LM2677SX-3.3/NOPB,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTW)-7,包装数量MPQ:500个,MSL 等级/回流焊峰值温度:Level-3-245C-168 HR,引脚镀层/焊球材料:SN,TI官网LM2677SX-3.3/NOPB的批量USD价格:2.475(1000+)

LM2677SX-5.0/NOPB,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTW)-7,包装数量MPQ:500个,MSL 等级/回流焊峰值温度:Level-3-245C-168 HR,引脚镀层/焊球材料:SN,TI官网LM2677SX-5.0/NOPB的批量USD价格:2.475(1000+)

LM2677SX-ADJ/NOPB,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTW)-7,包装数量MPQ:500个,MSL 等级/回流焊峰值温度:Level-3-245C-168 HR,引脚镀层/焊球材料:SN,TI官网LM2677SX-ADJ/NOPB的批量USD价格:2.475(1000+)

LM2677T-12/NOPB,工作温度:-40 to 125,封装:TO-220 (NDZ)-7,包装数量MPQ:45个,MSL 等级/回流焊峰值温度:Level-1-NA-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2677T-12/NOPB的批量USD价格:2.475(1000+)

LM2677T-3.3/NOPB,工作温度:-40 to 125,封装:TO-220 (NDZ)-7,包装数量MPQ:45个,MSL 等级/回流焊峰值温度:Level-1-NA-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2677T-3.3/NOPB的批量USD价格:2.475(1000+)

LM2677T-5.0/NOPB,工作温度:-40 to 125,封装:TO-220 (NDZ)-7,包装数量MPQ:45个,MSL 等级/回流焊峰值温度:Level-1-NA-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2677T-5.0/NOPB的批量USD价格:2.475(1000+)

LM2677T-ADJ/NOPB,工作温度:-40 to 125,封装:TO-220 (NDZ)-7,包装数量MPQ:45个,MSL 等级/回流焊峰值温度:Level-1-NA-UNLIM,引脚镀层/焊球材料:SN,TI官网LM2677T-ADJ/NOPB的批量USD价格:2.475(1000+)

LM2677S-5.0,工作温度:-40 to 125,封装:DDPAK/TO-263 (KTW)-7,包装数量MPQ:45个,MSL 等级/回流焊峰值温度:Level-3-235C-168 HR,引脚镀层/焊球材料:SNPB,TI官网LM2677S-5.0的批量USD价格:4.084(1000+)

LM2677T-ADJ,工作温度:-40 to 125,封装:TO-220 (NDZ)-7,包装数量MPQ:45个,MSL 等级/回流焊峰值温度:Level-1-NA-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LM2677T-ADJ的批量USD价格:3.589(1000+)

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