Datasheet > XC9128

XC9128

更新时间： 2024-11-25 04:23:55

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
14页	326K
描述
1A Driver Transistor Built-In, Step-Up DC/DC Converters

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XC9128 数据手册

XC9128/XC9129Series

ETR0411-004

1A Driver Transistor Built-In, Step-Up DC/DC Converters

■GENERAL DESCRIPTION

The XC9128/XC9129 series are synchronous step-up DC/DC converters with a 0.2Ω (TYP.) N-channel driver transistor and a

synchronous 0.2Ω (TYP.) P-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 transistors. With a high switching frequency of 1.2MHz, a small inductor is

selectable making the series ideally suited for applications requiring low profile or space saving solutions. With the MODE

pin, the series provides mode selection of PWM control or PFM/PWM automatic switching control. In the PWM/PFM

automatic switching mode, the series switches from PWM to PFM to reduce switching loss when load current is small.

When load current is large, the series switches automatically to the PWM mode so that high efficiency is achievable over a

wide range of load conditions. The series also provides small output ripple from light to large loads by using the built-in

circuit which enables the smooth transition between PWM and PFM. When a voltage higher than the input voltage is

applied to the output during shut-down, the input and the output become isolated making it possible for the IC to work in

parallel with the likes of an AC adaptor.

■FEATURES

High Efficiency, Large Current Step-Up Converter

■APPLICATIONS

●Digital audio equipment

Output Current

: 150mA＠V_OUT=3.3V, V_IN=0.9V

500mA＠V_OUT=3.3V, V_IN=1.8V

: 0.8V~6.0V

: 1.8V~5.3V (Externally set)

Set up freely with a reference voltage

supply of 0.45V (±0.01V) & external

components

●Digital cameras, Video equipment

●Computer Mice

Input Voltage Range

Output Voltage Setting

Range

●Various multi-function power supplies using alkali cells (1

to 3 cells), nickel hydride batteries, or single lithium cells

Oscillation Frequency

: 1.2MHz (Fixed oscillation frequency

accuracy ±15%)

Input Current

: 1.0A

Maximum Current Limit

Control

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

: PWM, PWM/PFM control

externally selectable

High Speed

:100mV @ V_OUT=3.3V,

Transient Response

Protection Circuits

V_IN=1.8V, I_OUT=10mA→100mA

: Thermal shutdown

: Integral latch method (Over current limit)

: 5ms (TYP.) internally set

Soft-Start Time

Ceramic Capacitor Compatible

Adaptor Enable Function

Packages

Flag Output (FO)

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

: Open-drain output

■TYPICAL PERFORMANCE

CHARACTERISTICS

●Efficiency vs. Output Current

XC9128B45CDx

■TYPICAL APPLICATION CIRCUIT

V_OUT=5.0V, f_OSC=1.2MHz

L=4.7μH (CDRH4D28C), C_IN=10μF, C_L=32μF

100

3.7V

VIN=1.8V

PWM(MODE:H)

PWM/PFM(MODE:L)

0.1

100

1000

Output Current : IOUT (mA)

Output Current: I_OUT(mA)

1/14

12 3 4 5 6 7...14

中文翻译

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与XC9128相关器件

型号	品牌	获取价格	描述	数据表
XC9128_1	TOREX	获取价格	1A Driver Transistor Built-In, Step-Up DC/DC Converters
XC9128B45CAL	TOREX	获取价格	Switching Regulator/Controller
XC9128B45CAR	TOREX	获取价格	1A Driver Transistor Built-In, Step-Up DC/DC Converters
XC9128B45CAR-G	TOREX	获取价格	1A Driver Transistor Built-In, Step-Up DC/DC Converters
XC9128B45CDL	TOREX	获取价格	Switching Regulator/Controller
XC9128B45CDR	TOREX	获取价格	1A Driver Transistor Built-In, Step-Up DC/DC Converters
XC9128B45CDR-G	TOREX	获取价格	1A Driver Transistor Built-In, Step-Up DC/DC Converters
XC9128B45CSL	TOREX	获取价格	Switching Regulator/Controller
XC9128B45CSR	TOREX	获取价格	1A Driver Transistor Built-In, Step-Up DC/DC Converters
XC9128D45CAR	TOREX	获取价格	1A Driver Transistor Built-In, Step-Up DC/DC Converters

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