Datasheet > XC9268

XC9268

更新时间： 2024-09-18 02:51:31

品牌	Logo	应用领域
特瑞仕 - TOREX		/
页数	文件大小	规格书
30页	1103K
描述
36V Operation 600mA Synchronous Step-Down DC/DC Converters

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XC9268 数据手册

XC9268Series

36V Operation 600mA Synchronous Step-Down DC/DC Converters

ETR05071-001a

■GENERAL DESCRIPTION

The XC9268 series are 36V operation synchronous step-down DC/DC converter ICs with a built-in P-channel MOS driver transistor

and N-channel MOS switching transistor. The XC9268 series has operating voltage range of 3.0V~36.0V and high-efficiency power

supply up to an output current of 600mA. Low ESR capacitors such as ceramic capacitors can be used for the load capacitor (C_L).

A 0.75V reference voltage source is incorporated in the IC, and the output voltage can be set to a value from 1.0V to 25.0V using

external resistors (R_FB1, R_FB2).

1.2MHz or 2.2MHz can be selected for the switching frequency. In automatic PWM/PFM control, the IC operates by PFM control

when the load is light to achieve high efficiency over the full load range from light to heavy.

The soft-start time is internally set to 2.0ms (TYP.), but can be adjusted to set a longer time using an external resistor and capacitor.

With the built-in UVLO function, the driver transistor is forced OFF when input voltage becomes 2.7V or lower.

The output state can be monitored using the power good function.

Internal protection circuits include over current protection and thermal shutdown circuits to enable safe use.

■FEATURES

Input Voltage Range

Output Voltage Range

FB Voltage

■APPLICATIONS

● Electric Meter

3.0 ~ 36V (Absolute Max 40V

1.0 ~ 25V

● Gas Detector

0.75V ± 1.5%

● Various Sensor

Oscillation Frequency

Output Current

1.2MHz, 2.2MHz

● Industrial Equipment

● Home appliance

600mA

Quiescent Current

12.5μA (1.2MHz)

13.5μA (2.2MHz)

Control Methods

PWM/PFM Auto

Efficiency 83%@12V→5V、1mA

Adjustable by RC

Soft-start Time

Protection Circuits

Over Current Protection

Thermal Shutdown

Ceramic Capacitor

- 40℃ ~ + 105℃

Output Capacitor

Operating Ambient Temperature

Packages

SOT-89-5 (Without Power Good)

USP-6C (With Power Good)

EU RoHS Compliant, Pb Free

Environmentally Friendly

■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE

CHARACTERISTICS

V_IN

C_IN

R_FB1

2.2μF

C_FB

EN/SS

C_L

R_FB2

10μF×2

R_PG

GND

1/30

12 3 4 5 6 7...30

中文翻译

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