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STI8021

STI8021
零售价
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1000
产品编号
Vin Range (V):
2.5 to 5.5
Output Channels:
2
Iout (A):
1.2/ 1.2
Switching Frquency (Hz):
1.5M
VFB (V):
0.6
Iq of each Channel (μA):
40
Functions:
2 Channel Low Voltage Buck
Package:
DFN3x3-10
Status:
MP
数量
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FEATURES
参数
GENERAL DESCRIPTION
APPLICATIONS
TYPICAL APPILCATION

• High Efficiency:Up to 96%
• 1.5MHz Constant Frequency Operation
• 1.2A Output Current of Each Channel
• No Schottky Diode Required
• 2.3V to 6V Input Voltage Range
• Output Voltage as Low as 0.6V
• PFM for High Efficiency in Light Load
• 100%Duty Cycle in Dropout Operation
• Low Quiescent Current:40μAof Each Channel
• Short Circuit Protection
• Thermal Fault Protection
• Inrush Current Limit and Soft Start
• Input overvoltage protection(OVP)
• <1μA Shutdown Current

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The STI8021 is a 1.5MHz constant frequency current mode,dual-channel high-efficiency PWM step-down converter.It is ideal for portable equipment requiring very high current up to 1.2A each channel from single-cell Lithium-ion batteries while still achieving over 90%efficiency during peak load conditions.The STI8021 also can run at 100%duty cycle for low dropout operation,extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications.The STI8021 can supply up to 1.2A output load current each channel from a 2.5V to 5.5V input voltage and the output voltage can be regulated as low as 0.6V.The internal slope compensation setting allows the device to operate with smaller inductor values to optimize size and provide efficient operation.The output voltage of STI8021 is available in adjustable from 0.6V to VIN.The device is available in a Pb-free,DFN3*3-10 package and is rated over the-40°C to+85°C temperature range.Operation modes,PWM control and PFM Mode switching control,allow a high efficiency over the wider range of the load.

• Cellular and Smart Phones
• Wireless and DSL Modems
• PDAs
• Portable Instruments
• Digital Still and Video Cameras
• PC Cards

Figure 1.Basic Application Circuit

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2020-09-14 15:10:12
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