Datasheet > RS8407

RS8407

更新时间： 2022-06-24 15:40:12

品牌	Logo	应用领域
普诚科技 - PTC		/
页数	文件大小	规格书
4页	332K
描述
1.5MHz, 2A, Synchronous Step-Down DC/DC Converter

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RS8407 数据手册

RS8407

1.5MHz, 2A, Synchronous Step-Down

DC/DC Converter

DESCRIPTION

FEATURES

The RS8407 is a high efficiency monolithic synchronous

buck regulator using a constant frequency, current mode

architecture. The device is available in an adjustable

version. Supply current with no load is 45uA and drops to

<1uA in shutdown. The 2.7V to 5.5V input voltage range

makes the RS8407 ideally suited for single Li-Ion, two to

four AA battery-powered applications. 100% duty cycle

provides low dropout operation, extending battery life in

portable systems. In power saving mode, 45uA quiescent

current is very suitable for DSP/MCU in standby

operation; and in PWM mode, low output ripple voltage is

good enough for noise sensitive applications. The two

modes can be automatically switched according to the

load current.



High Efficiency: Up to 95%

1.5MHz Constant Switching Frequency

Integrated Main switch and synchronous rectifier.

No Schottky Diode Required



Shutdown Current: <1μA

2.7V to 5.5V Input Voltage Range

Output Voltage as Low as 0.6V

100% Duty Cycle in Dropout

Quiescent Current : 45μA (TYP.)

Slope Compensated Current Mode Control for

Excellent Line and Load Transient Response

Short Circuit Protection



<1uA Shutdown Current

APPLICATIONS

Switching frequency is internally set at 1.5MHz, allowing

the use of small surface mount inductors and capacitors.

The internal synchronous switch increases efficiency and

eliminates the need for an external Schottky diode. Low

output voltages are easily supported with the 0.6V

feedback reference voltage. The RS8407 is available in a

small SOT-23-5 package and SOT-23-6 package.

 Smart Phones

 Set Top Box

 Personal Information Appliances

 Wireless and DSL Modems

 MP3 Players

 Portable Instruments

BLOCK DIAGRAM

Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, No. 233-1, Baociao Rd., Sindian Dist., New Taipei City 23145, Taiwan

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