DC/DC转换器和控制器

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产品名称: DC/DC转换器和控制器
产品型号: XC9253R
产品展商: TOREX
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简单介绍

DC/DC转换器和控制器 The XC9253R series is a group of synchronous-rectification type DC/DC converters with a built-in 0.6ΩP-channel driver transistor and 0.7ΩN-channel switching transistor,


DC/DC转换器和控制器  的详细介绍
DC/DC转换器和控制器

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概要

The XC9253R series is a group of synchronous-rectification type DC/DC converters with a built-in 0.6ΩP-channel driver transistor and 0.7ΩN-channel switching transistor, designed to allow the use of ceramic capacitors. The ICs enable a high efficiency, stable power supply with an output current of 500mA to be configured using only a coil and two capacitors connected externally. Minimum operating voltage is 2.0V~6.0V. Output voltage is 3.3V(accuracy: ±2.0%). With the built-in oscillator, oscillation frequency is set to 600kHz. As for operation mode, the XC9253R series is automatic PWM/PFM switching control allowing fast response, low ripple and high efficiency over the full range of load (from light load to high output current conditions). ,The soft start and current control functions are internally optimized. During standby, all circuits are shutdown to reduce current consumption to as low as 1.0μA or less. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when input voltage becomes 1.4V or lower. Two types of package, SOT-25 and USP-6B, are available.

特点

P-Ch Driver Tr. Built-In ON resistance 0.6Ω
N-Ch DriverTr. built-in ON resistance 0.7Ω
Input Voltage Range 2.0V~6.0V
Output Voltage Range 3.3V
Low Power Consumption 15μA (TYP.) (VIN=3.6V)
Control Method PWM/PFM Automatic
High Efficiency 92% (TYP.)(VIN=4.5V, VOUT=3.3V, IOUT=100mA)
Output Current 500mA
Oscillation Frequency 600kHz (±15%)
Low Output Ripple 10mV
Maximum Duty Ratio 100%
Soft-Start Soft-Start Circuit Built-In
Protection Circuit Current Limiter Circuit Built-In (Constant Current & Latching)
Capacitor Low ESR Ceramic Capacitor Compatible
Packages SOT-25, USP-6B
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