Datasheet > XC9223B81SL

XC9223B81SL

更新时间： 2024-11-11 02:59:03

品牌	Logo	应用领域
特瑞仕 - TOREX		转换器驱动
页数	文件大小	规格书
25页	380K
描述
1A Driver Transistor Built-In Step-Down DC/DC Converters

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XC9223B81SL 数据手册

XC9223/XC9224Series

ETR0509_007

1A Driver Transistor Built-In Step-Down DC/DC Converters

☆GreenOperation-Compatible

■GENERAL DESCRIPTION

The XC9223/XC9224 series are synchronous step-down DC/DC converters with a 0.21Ω (TYP.) P-channel driver transistor and a

synchronous 0.23Ω (TYP.) N-channel switching transistor built-in. A highly efficient and stable current can be supplied up to 1.0A by

reducing ON resistance of the built-in transistor. With a high switching frequency of 1.0MHz or 2.0MHz, a small inductor is selectable;

therefore, the XC9223/XC9224 series are ideally suited to applications with height limitation such as HDD or space-saving

applications. Current limit value can be chosen either 1.2A (MIN.) when the LIM pin is high level, or 0.6A (MIN.) when the LIM pin is

low level for using the power supply which current limit value differs such as USB or AC adapter. With the MODE/SYNC pin, the

XC9223/XC9224 series provide mode selection of the fixed PWM control or automatically switching current limit PFM/PWM control.

As for preventing unwanted switching noise, the XC9223/XC9224 series can be synchronized with an external clock signal within the

range of ± 25% toward an internal clock signal via the MODE/SYNC pin. For protection against heat damage of the ICs, the

XC9223/XC9224 series build in three protection functions: integral latch protection, thermal shutdown, and short-circuit protection.

With the built-in U.V.L.O. (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when input voltage

becomes 1.8V or lower. The XC9223B/XC9224B series’ detector function monitors the discretional voltage by external resistors.

■APPLICATIONS

●HDD

■FEATURES

Input Voltage Range

: 2.5V ~ 6.0V

Output Voltage Range : 0.9V ~ VIN (set by FB pin)

Oscillation Frequency : 1MHz, 2MHz (+15% accuracy)

●Notebook computers

Output Current

Maximum Current

Limit

: 1.0A

●CD-R / RW, DVD

: 0.6A (MIN.) ~ 0.9A (MAX)

with LIM pin=’L’

: 1.2A (MIN.) ~ 2.0A (MAX.)

with LIM pin=’H’

: PWM/PFM or PWM by MODE pin

: Thermal shutdown

Integral latch method

●PDAs, Portable communication modems

●Digital cameras, Video recorders

●Various general-purpose power supplies

Controls

Protection Circuits

Short-circuit protection

: 1ms (TYP.) internally set

: B type (with VD function)

D type (without VD function)

: 0.21Ω

Soft-Start Time

Voltage Detector

Built-in P-channel

MOSFET

Built-in Synchronous

N-channel MOSFET

High Efficiency

: 0.23Ω

(No Schottky Barrier Diode Required)

: 95% (V_IN=5.0V, V_OUT=3.3V)

Synchronized with an External Clock Signal

Ceramic Capacitor Compatible

Packages

: MSOP-10, USP-10B, SOP-8

* SOP-8 package is available for the XC9223D type only.

■TYPICAL PERFORMANCE

CHARACTERISTICS

●Efficiency vs. Output Current

■TYPICAL APPLICATION CIRCUIT

XC9223B081Ax

VIN=5V, FOSC=1MHz, L=4.7uH(CDRH4D28C),

L=4.7μH (CDRH4D28C), CIN=10μF (ceramic), CL=10μF (ceramic)

CIN=10uF(ceramic), CL=10uF(ceramic)

VIN=5V, FOSC=1MHz,

100

VOUT=3.3V

VOUT=1.5V

(*1) A capacitor of 2200pF～0.1μF is recommended to place at the C_DDbetween the AGND

pin and the V_INpin.

PWM/PFM

PWM

Please refer to the page showing INSTRUCTION ON PATTERN LAYOUT for more detail.

100

1000

Output Current: IOUT (mA)

1/25

12 3 4 5 6 7...25

中文翻译

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与XC9223B81SL相关器件

型号	品牌	获取价格	描述	数据表
XC9223B81SR	TOREX	获取价格	1A Driver Transistor Built-In Step-Down DC/DC Converters
XC9223B82AL	TOREX	获取价格	1A Driver Transistor Built-In Step-Down DC/DC Converters
XC9223B82AR	TOREX	获取价格	1A Driver Transistor Built-In Step-Down DC/DC Converters
XC9223B82DL	TOREX	获取价格	1A Driver Transistor Built-In Step-Down DC/DC Converters
XC9223B82DR	TOREX	获取价格	1A Driver Transistor Built-In Step-Down DC/DC Converters
XC9223B82SL	TOREX	获取价格	1A Driver Transistor Built-In Step-Down DC/DC Converters
XC9223B82SR	TOREX	获取价格	1A Driver Transistor Built-In Step-Down DC/DC Converters
XC9223D01AL	TOREX	获取价格	1A Driver Transistor Built-In Step-Down DC/DC Converters
XC9223D01AR	TOREX	获取价格	1A Driver Transistor Built-In Step-Down DC/DC Converters
XC9223D01DL	TOREX	获取价格	1A Driver Transistor Built-In Step-Down DC/DC Converters

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