降压型直流电源变换器芯片(常规型) | |||||
产品型号 | 输入电压 | 输出电流 | 开关频率 | 电压版本 | 封装类型 |
XL1507 | 4.5V ~ 40V | 3A | 150KHz | Adj (1.23V)/3.3V/5V/12V | TO252-5L |
XL1509 | 4.5V ~ 40V | 2A | 150KHz | Adj (1.23V)/3.3V/5V/12V | SOP8L |
XL2596 | 4.5V ~ 40V | 3A | 150KHz | Adj (1.23V)/3.3V/5V/12V | TO263-5L/TO220-5L |
XL2576 | 4.5V ~ 40V | 3A | 52KHz | Adj (1.23V)/3.3V/5V/12V | TO263-5L/TO220-5L |
XL2576P | 4.5V ~ 40V | 2A | 52KHz | Adj (1.23V) | SOP8-EP |
Features
n Wide 4.5V to 40V Input Voltage Range
n 3.3V,5V,12V, and adjustable versions
n Output Adjustable from 1.23V to 37V
n Maximum Duty Cycle 100%
n Minimum Drop Out 1.5V
n Fixed 150KHz Switching Frequency
n 2A Constant Output Current Capability
n Internal Optimize Power Transistor
n High efficiency
n Excellent line and load regulation
n TTL shutdown capability
n ON/OFF pin with hysteresis function
n Built in thermal shutdown function
n Built in current limit function
n Built in second current limit function
n Available in SOIC8 package
Applications
n LCD Monitor and LCD TV
n Digital Photo Frame
n Set-up Box
n ADSL Modem
n Telecom / Networking Equipment
General Description
The XL1509 is a 150 KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 2A load with high
efficiency, low ripple and excellent line and
load regulation. Requiring a minimum
number of external components, the regulator
is simple to use and include internal
frequency compensation and a
fixed-frequency oscillator.
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An enable
function, an over current protection function
is built inside. When second current limit
function happens, the operation frequency
will be reduced from 150KHz to 50KHz. An
internal compensation block is built in to
minimize external component count.
Figure1. Package Type of XL1509
Features Wide 4.5V to 40V Input Voltage Range 3.3V,5V,12V, and adjustable versions Output Adjustable from 1.23V to 37V Maximum Duty Cycle 100% Minimum Drop Out 1.5V Fixed 150KHz Switching Frequency 3A Constant Output Current Capability Internal Optimize Power Transistor High efficiency Excellent line and load regulation TTL shutdown capability ON/OFF pin with hysteresis function Built in thermal shutdown function Built in current limit function Built in second current limit function Available in TO-252 packageApplications LCD Monitor and LCD TV Digital Photo Frame Set-up Box ADSL Modem Telecom / Networking EquipmentGeneral DescriptionThe XL1507 is a 150 KHz fixed frequencyPWM buck (step-down) DC/DC converter,capable of driving a 3A load with highefficiency, low ripple and exc...
可看货.有意者请电联张小姐15818717309 2A 150KHz 40V Buck DC to DC Converter XL1509 Rev 2.0 1 Features n Wide 4.5V to 40V Input Voltage Range n 3.3V,5V,12V, and adjustable versions n Output Adjustable from 1.23V to 37V n Maximum Duty Cycle 100% n Minimum Drop Out 1.5V n Fixed 150KHz Switching Frequency n 2A Constant Output Current Capability n Internal Optimize Power Transistor n High efficiency n Excellent line and load regulation n TTL shutdown capability n ON/OFF pin with hysteresis function n Built in thermal shutdown function n Built in current limit function n Built in second current limit function n Available in SOIC8 package Applications n LCD Monitor and LCD TV n Digital Photo Frame n Set-up Box n ADSL Modem n Telecom / Networking Equipment General Description The XL1509 is a 150 KHz fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 2A load with high efficiency, low ripple and excellent line and load regulation. R...