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XC9237A2ACML

更新时间： 2024-11-01 04:23:51

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
28页	761K
描述
600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters

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XC9237A2ACML 数据手册

XC9235/XC9236/XC9237Series

ETR0514-007

600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters

☆GreenOperation Compatible

■GENERAL DESCRIPTION

The XC9235/XC9236/XC9237 series is a group of synchronous-rectification type DC/DC converters with a built-in 0.42Ω

P-channel driver transistor and 0.52ΩN-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 600mA to be configured using only a coil and two

capacitors connected externally. Operating voltage range is from 2.0V to 6.0V. Output voltage is internally set in a range from

0.8V to 4.0V in increments of 50mV (accuracy: ±2.0%). With the built-in oscillator, ether 1.2MHz or 3.0MHz can be selected

for suiting to your particular application. As for operation mode, the XC9235 series is PWM control, the XC9236 series is

automatic PWM/PFM switching control and the XC9237 series can be manually switched between the PWM control mode and

the automatic PWM/PFM switching control mode, allowing fast response, low ripple and high efficiency over the full range of

loads (from light load to heavy load).

The soft start and current control functions are internally optimized. During stand-by, 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.

The XC9235B/XC9236B/XC9237B series provide short-time turn-on by the soft start function internally set in 0.25 ms (TYP).

The XC9235B(C)/XC9236B(C)/XC9237B(C) integrate C_Lauto discharge function which enables the electric charge at the output

capacitor C_Lto be discharged via the internal auto-discharge switch located between the L_Xand V_SSpins. When the devices

enter stand-by mode, output voltage quickly returns to the V_SSlevel as a result of this function.

Two types of package SOT-25 and USP-6C are available.

■FEATURES

■APPLICATIONS

●Mobile phones

●Bluetooth equipment

P-ch Driver Transistor Built-In : ON resistance 0.42Ω

N-ch Driver Transistor Built-In : ON resistance 0.52Ω

Input Voltage

: 2.0V ~ 6.0V

●PDAs, portable communication modem

●Portable games

Output Voltage

: 0.8V ~ 4.0V

High Efficiency

: 92% (TYP.)

●Digital cameras, video cameras

●Cordless phones

Output Current

: 600mA

Oscillation Frequency

Maximum Duty Cycle

Control Methods

: 1.2MHz, 3.0MHz (+15%)

: 100%

●Notebook computers

: PWM (XC9235)

PWM/PFM Auto (XC9236)

PWM/PFM Manual (XC9237)

Soft-Start Circuit Built-In

Current Limiter Circuit Built-In (Constant Current & Latching)

Low ESR Ceramic Capacitor Compatible

Packages

: SOT-25, USP-6C

C_LHigh Speed Discharge

（XC9235B(C)/XC9236B(C)/XC9237B(C) Series）

High Speed Soft Start

（XC9235B/XC9236B/XC9237B Series）

* Performance depends on external components and wiring on the PCB.

■TYPICAL APPLICATION CIRCUIT

■TYPICAL PERFORMANCE

CHARACTERISTICS

●Efficiency vs. Output Current（FOSC=1.2NHz, VOUT=1.8V）

PWM/PFM Automatic Sw itching Control

100

VIN= 4.2V

PWM Control

VIN= 4.2V

3.6V

2.4V

3.6V

2.4V

0.1

100

1000

Output Current:IOUT(mA)

1/28

12 3 4 5 6 7...28

中文翻译

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与XC9237A2ACML相关器件

型号	品牌	获取价格	描述	数据表
XC9237A2ACML-G	TOREX	获取价格	Switching Regulator/Controller
XC9237A2ACMR	TOREX	获取价格	600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters
XC9237A2ADEL	TOREX	获取价格	600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters
XC9237A2ADEL-G	TOREX	获取价格	Switching Regulator/Controller
XC9237A2ADER	TOREX	获取价格	600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters
XC9237A2ADML	TOREX	获取价格	600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters
XC9237A2ADML-G	TOREX	获取价格	Switching Regulator/Controller
XC9237A2ADMR	TOREX	获取价格	600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters
XC9237A2B6ML	TOREX	获取价格	Analog Circuit
XC9237A2B6MR	TOREX	获取价格	Analog Circuit

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