PD‐97661
9A Highly Integrated SupIRBuckTM
Single‐Input Voltage, Synchronous Buck Regulator
-1-
FEATURES
IR3899
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.
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
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.
Enhanced Line/Load Regulation with Feed‐Forward
Programmable Switching Frequency up to 1.5MHz
Internal Digital Soft‐Start/Soft‐Stop
The switching frequency is programmable from 300kHz to
1.5MHz for an optimum solution.
Enable input with Voltage Monitoring Capability
Thermally Compensated Current Limit with robust
hiccup mode over current protection
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.
Smart internal LDO to improve light load and full
load efficiency
External Synchronization with Smooth Clocking
Enhanced Pre‐Bias Start‐Up
APPLICATIONS
Precision Reference Voltage (0.5V+/‐0.5%) with
margining capability
Netcom Applications
Vp for Tracking Applications (Source/Sink Capability
+/‐9A)
Embedded Telecom Systems
Server Applications
Integrated MOSFET drivers and Bootstrap Diode
Storage Applications
Thermal Shut Down
Distributed Point of Load Power Architectures
Programmable Power Good Output with tracking
capability
Monotonic Start‐Up
Operating temp: ‐40oC
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免费人工找货- 国内价格
- 1+21.54540
- 10+19.88800
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- 1000+16.57340
- 国内价格
- 1+18.29564
- 10+14.44122
- 30+11.05694
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