GRM188R61E105KA12D 데이터 시트보기 (PDF) - International Rectifier

부품명

상세내역

일치하는 목록

GRM188R61E105KA12D

9A Highly Integrated SupIRBuck™ Single‐Input Voltage, Synchronous Buck Regulator

International Rectifier 

9A Highly Integrated SupIRBuckTM

Single‐Input Vo- l1ta-ge, Synchronous Buck Regulator

PD‐97661

IR3899

FEATURES

 Single 5V to 21V application

 Wide Input Voltage Range from 1.0V to 21V with

external Vcc

 Output Voltage Range: 0.5V to 0.86× Vin

 Enhanced Line/Load Regulation with Feed‐Forward

 Programmable Switching Frequency up to 1.5MHz

 Internal Digital Soft‐Start/Soft‐Stop

 Enable input with Voltage Monitoring Capability

 Thermally Compensated Current Limit with robust

hiccup mode over current protection

 Smart internal LDO to improve light load and full

load efficiency

 External Synchronization with Smooth Clocking

 Enhanced Pre‐Bias Start‐Up

 Precision Reference Voltage (0.5V+/‐0.5%) with

margining capability

 Vp for Tracking Applications (Source/Sink Capability

+/‐9A)

 Integrated MOSFET drivers and Bootstrap Diode

 Thermal Shut Down

 Programmable Power Good Output with tracking

capability

 Monotonic Start‐Up

 Operating temp: ‐40oC < Tj < 125oC

 Small Size: 4mm x 5mm PQFN

 Lead‐free, Halogen‐free and RoHS Compliant

DESCRIPTION

The IR3899 SupIRBuckTM is an easy‐to‐use, fully integrated

and highly efficient DC/DC regulator. The onboard PWM

controller and MOSFETs make IR3899 a space‐efficient

solution, providing accurate power delivery.

IR3899 is a versatile regulator which offers programmable

switching frequency and the fixed internal current limit

while operates in wide input and output voltage range.

The switching frequency is programmable from 300kHz to

1.5MHz for an optimum solution.

It also features important protection functions, such as

Pre‐Bias startup, thermally compensated current limit,

over voltage protection and thermal shutdown to give

required system level security in the event of fault

conditions.

APPLICATIONS

 Netcom Applications

 Embedded Telecom Systems

 Server Applications

 Storage Applications

 Distributed Point of Load Power Architectures

BASIC APPLICATION

Figure 1: IR3899 Basic Application Circuit

98

96

94

92

90

88

86

84

82

80

12Vin,Internal bias,Frequency 600KHz

78

0.9 1.8 2.7 3.6 4.5 5.4 6.3 7.2 8.1 9

Load Current (A)

1.2Vout 3.3Vout

Figure 2: IR3899 Efficiency

1 JANUARY 18, 2013 |DATA SHEET | 3.6

Share Link: