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Low Voltage Input Buck ICs

Datasheet
LP3219-LV Buck
2.5-5.5Input Voltage(V):
0.6 to VinOutput Voltage(V):
1.5MSwitch Frequency(Hz):
2000Output Current(mA):
95Efficiency(%):
95Quiescent Current(mA):
PWM,Shutdown,SS(Internal)OTP,OCPSpecial Features:
SOT23-5Package:


1.5MHz, 2A Step-down Converter



General Description

The LP3219 is a 1.5MHz constant frequency current mode PWM step-down converter. It is ideal for portable equipment requiring very high current up to 2.0A from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions. The LP3219 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 LP3219 can supply up to 2.0A output load current from a 2.5V to 5.5V input voltage and the output voltage can be regulated as low as 0.6V. The high switching frequency minimizes the size of external components while keeping switching losses low. The internal slope compensation setting allows the device to operate with smaller inductor values to optimize size and provide efficient operation. The LP3219 is available with adjustable (0.6V to VIN) output voltage. The device is available in a Pb-free, SOT23-6 package and is rated over the-40°C to +85°C temperature range.
 


Applications
 

Portable Instruments
DSP Core Supplies
Cellular Phone and Smart mobile phone
PDA
GPS Applications

 


Features
 

Input Voltage Range: 2.5V to 5.5V
Output Voltage Range: 0.6V to VIN
2.0A Output Current
Low R(DSON) Internal Switches:130mΩ
High Efficiency :Up to 95%
100% Duty Cycle in Dropout
Low Shutdown Current: <1uA
1.5MHz Switching Frequency
Soft star Function
Short Circuit Protection
Thermal Fault Protection
SOT23-6Package
RoHS Compliant and 100% Lead (Pb)-Free
 

Marking Information
 

Please see specification. 
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We will send a copy to you as fast as we can.
 






 

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