Datasheet > XC9252

XC9252

更新时间： 2023-12-06 20:08:39

品牌	Logo	应用领域
特瑞仕 - TOREX		/
页数	文件大小	规格书
28页	1490K
描述
适应105℃工作于30V 低消耗电流

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XC9252 数据手册

XC9252Series

ETR05038-005

Low Power Consumption Step-down DC/DC Controller IC

■GENERAL DESCRIPTION

The XC9252 series is a 30V operation step-down DC/DC controller IC. The external P-ch driver transistor is used to achieve a stable operation

under low input voltage. Low ESR capacitors such as ceramic capacitors can be used for the load capacitor (C_L).

A 0.8V reference voltage source is incorporated, and the output voltage can be set freely from 1.5V using external resistors (R_FB1, R_FB2).

280kHz to 550kHz can be selected for the switching frequency by connecting an external resistor to the R_OSCpin. The generation of unneeded

noise can be reduced by this synchronization with an external CLK within ±25% of the internal clock using the MODE/SYNC pin. 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 can be set as desired by adding an external capacitance to the SS pin.

With the built-in UVLO function, the driver transistor is forced OFF when input voltage becomes 2.5V or lower.

Internal protection circuits include over current protection, short-circuit protection, and thermal shutdown circuits to enable safe use.

■APPLICATIONS

●Car navigation systems

●Car audios

■FEATURES

Input Voltage Range

FB Voltage

3.0V～30V (Absolute MAX. Rating: 36V)

: 0.8V (±2%)

Supply Current

: 30μA (@300kHz)

Oscillation Frequency

: 280kHz～550kHz (External Resistor)

●ETC automotives

External Clocking Synchronous :±25% of the internal clock

Control Method

: PWM control (MODE:H)

PWM/PFM (MODE:L)

Soft-Start

: External set (External C)

: Over current limit (External Resistor)

Automatic Return (XC9252A/B)

Integral latch protection (XC9252C)

Thermal shutdown

Protection Circuits

Output Capacitor

Operating Ambient Temperature

Packages

: Low ESR Capacitor

: -40℃～+105℃

: TSSOP-16 (XC9252A/C)

USP-10B (XC9252B)

Environmentally Friendly

: EU RoHS Compliant, Pb Free

■

TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE

CHARACTARISTICS

XC9252x08A(V_IN=12V, V_OUT=5.7V, ｆ_OSC=280kHz)

L=22 H(CLF12555-220M), C =10 F(GRM32ER71H106KA12L),

R_OSC=300k , C =22 (GRM32ER71E226KE15L),

μ ×2

R_SENSE=50m PchMOSFET:2SJ668, SBD:CMS15

Ω,

100

PFM(MODE=L)

PWM(MODE=H)

100

1000

10000

Output Current :I_OUT[mA]

1/28

12 3 4 5 6 7...28

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