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LM2678-5.0_2000 [SIMPLE SWITCHER® High Efficiency 5A Step-Down Voltage Regulator ]

other parts : LM2678_2000  LM2678-12_2000  LM2678-3.3_2000  LM2678-ADJ_2000  LM2678S-12_2000  LM2678T-12_2000  LM2678T-3.3_2000  LM2678S-ADJ_2000  LM2678S-5.0_2000  LM2678T-5.0_2000 

National-Semiconductor
National ->Texas Instruments

General Description
The LM2678 series of regulators are monolithic integrated circuits which provide all of the active functions for a stepdown (buck) switching regulator capable of driving up to 5A 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 3.3V, 5V and 12V and an adjustable output version.

Features
■ Efficiency up to 92%
■ Simple and easy to design with (using off-the-shelf
    external components)
■ 120 mΩ DMOS output switch
■ 3.3V, 5V and 12V fixed output and adjustable (1.2V to
    37V) versions
■ 50µA standby current when switched OFF
■ ±2%maximum output tolerance over full line and load
    conditions
■ Wide input voltage range: 8V to 40V
■ 260 KHz fixed frequency internal oscillator
■ −40 to +125˚C operating junction temperature range
   
Applications
■ Simple to design, high efficiency (>90%) step-down
    switching regulators
■ Efficient system pre-regulator for linear voltage
    regulators
■ Battery chargers
   

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LM2678-5.0 [SIMPLE SWITCHER® High Efficiency 5A Step-Down Voltage Regulator ]

other parts : LM2678  LM2678-12  LM2678-3.3  LM2678-ADJ  LM2678S-12  LM2678T-12  LM2678SD-12  LM2678S-ADJ  LM2678S-5.0  LM2678S-3.3 

National-Semiconductor
National ->Texas Instruments

General Description
The LM2678 series of regulators are monolithic integrated circuits which provide all of the active functions for a stepdown (buck) switching regulator capable of driving up to 5A 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 3.3V, 5V and 12V and an adjustable output version.

Features
■ Efficiency up to 92%
■ Simple and easy to design with (using off-the-shelf
    external components)
■ 120 mΩ DMOS output switch
■ 3.3V, 5V and 12V fixed output and adjustable (1.2V to
    37V) versions
■ 50µA standby current when switched OFF
■ ±2%maximum output tolerance over full line and load
    conditions
■ Wide input voltage range: 8V to 40V
■ 260 KHz fixed frequency internal oscillator
■ −40 to +125˚C operating junction temperature range
   
Applications
■ Simple to design, high efficiency (>90%) step-down
    switching regulators
■ Efficient system pre-regulator for linear voltage
    regulators
■ Battery chargers
   

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