IP1827 datasheet(1/39 Pages) IRF

部件名	IP1827

功能描述	Highly Integrated 25A Single.input Voltage, Synchronous Buck Regulator

PDF	39 Pages

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制造商	IRF [International Rectifier]

网页	http://www.irf.com

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1 / 39 page

iP1827

Highly Integrated 25A Single‐input Voltage,

Synchronous Buck Regulator

March 5, 2012 | V1.4

1

97599

FEATURES

 Wide input application 1.5V―16V

 Single 3.3V or single 5V application

 Output Voltage Range: 0.6V to 0.75*Vin

 0.5% accurate Reference Voltage

 Programmable Switching Frequency up to 1.5MHz

 Programmable Soft‐Start

 Enable input with Voltage Monitoring Capability

 Remote Sense Amplifier with True Converter

Voltage Sensing

 Thermally compensated Hiccup Mode

Over Current Protection

 Over‐voltage protection

 Pre‐Bias Start up

 Body Braking to improve transient

 Integrated MOSFET drivers and Bootstrap diode

 Operating temp: ‐40oC<Tj<125oC

 Thermal Shut Down

 Power Good Output with Window Comparator

 Small Size 7.7mmx7.7mm LGA

 Halogen Free, Pb‐Free and RoHS Compliant

BASIC APPLICATION

Figure 1 : iP1827 Basic Application Circuit

DESCRIPTION

The iP1827 iPOWIR

TM is an easy‐to‐use, fully integrated

and highly efficient DC/DC regulator. The onboard PWM

controller and MOSFETs make iP1827 a space‐efficient

solution, providing accurate power delivery for low output

voltage and high current applications.

iP1827 is a versatile regulator which offers programmability

of switching frequency and current limit while operating in

wide input and output voltage range.

The switching frequency is programmable from 250kHz to

1.5MHz for an optimum solution.

It also features important protection functions, such as

Pre‐Bias startup, hiccup current limit and thermal

shutdown to give required system level security in the

event of fault conditions.

APPLICATIONS

 Server Application

 Netcom Applications

 Embedded Telecom Systems

 Distributed Point of Load Power Architectures

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97

2.5

5

7.5

10

12.5

15

17.5

20

22.5

25

Iout (A)

Vo=1.8V

Vo=3.3V

Vin=12V

Vcc=3.3V

No Airflow

Includes biasing loss as well as inductor

losses and stray PCB losses

Figure 2: iP1827 Efficiency

iP1827

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