Datasheet > XC9236A00DMR

XC9236A00DMR

更新时间： 2024-11-02 09:17:47

品牌	Logo	应用领域
特瑞仕 - TOREX		/
页数	文件大小	规格书
23页	613K
描述
Switching Regulator/Controller

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中文翻译

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技术参数
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XC9236A00DMR 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	,	Reach Compliance Code：	compliant
风险等级：	5.77	湿度敏感等级：	1
Base Number Matches：	1

XC9236A00DMR 数据手册

XC9235/XC9236/XC9237

ETR0514-003

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

☆Green Operation 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. Two types of package, SOT-25 (250mW) and

USP-6C (100mW), 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

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

■TYPICAL APPLICATION CIRCUIT

■TYPICAL PERFORMANCE

CHARACTERISTICS

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

XC9237A18C

L=4.7μH(NR4018) CIN=4.7μF CL=10μF

PWM/PFM Automatic Switching Control

100

VIN = 4.2V

PWM Control

3.6V

2.4V

VIN= 4.2V

3.6V

2.4V

0.1

Output Current:IOUT(mA)

100

1000

1/23

12 3 4 5 6 7...23

中文翻译

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