Datasheet > XCL226

XCL226

更新时间： 2024-11-10 01:23:51

品牌	Logo	应用领域
特瑞仕 - TOREX		/
页数	文件大小	规格书
27页	761K
描述
0.5A Inductor Built-in Step-down âmicro DC/DCâ Converter

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XCL226 数据手册

XCL225/XCL226Series

ETR28014-003

0.5A Inductor Built-in Step-down “micro DC/DC” Converter

■GENERAL DESCRIPTION

The XCL225/XCL226 series are 18V operation synchronous step-down DC/DC converter ICs with a built-in high-side / low-side

driver transistor. The XCL225/XCL226 series has operating voltage range of 3.0V～18.0V and it can support 0.5A as an output

current with high-efficiency. Compatible with Low ESR capacitors such as ceramic capacitors for the load capacitor (C_L).

0.75V reference voltage source is incorporated in the IC, and the output voltage can be set to a value from 1.0V to 15.0V using

external resistors (R_FB1, R_FB2).

1.2MHz can be selected for the switching frequency. In PWM/PFM automatic switchover control, IC can change the control method

between PWM and PFM based on the output current requirement and as a result IC can achieve high efficiency over the full load

range.

XCL225/XCL226 has a fixed internal soft start time which is 1.0ms (TYP.), additionally the time can be extended by using an external

resistor and capacitor.

■FEATURES

■APPLICATIONS

Input Voltage Range

FB Voltage

3～18V（Absolute Max 20V）

0.75V±1.5%

● Hot water supply system

● Recorders, Camcorders

● Refrigerators, Air-conditioners

● Low Power Systems

Oscillation Frequency

Output Current

1.2MHz

0.5A

Control Methods

PWM control

PWM/PFM Automatic

Efficiency 85%@12V→5V, 1mA

Adjustable by RC

Soft-start Time

Protection Circuits

Over Current Protection

Integral Latch Method

(XCL225A/XCL226A)

Automatic Recovery

(XCL225B/XCL226B)

Thermal Shutdown

Package

DFN3030-10B

Environmentally Friendly

EU RoHS Compliant, Pb Free

■TYPICAL PERFORMANCE

■TYPICAL APPLICATION CIRCUIT

CHARACTERISTICS

XCL225/226 V_IN=12V, V_OUT=5.0V

100

R_PG

V_OUT

V_EN/SS

EN/SS

C_L

C_FB

R_FB1

V_IN

C_IN1

C_IN2

PGND

AGND

R_FB2

XCL225

XCL226

0.1

100

1000

Output Current : I_OUT[mA]

1/27

12 3 4 5 6 7...27

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