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XC9237C2CCML

更新时间： 2024-01-18 14:52:34

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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技术参数
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XC9237C2CCML 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	TSOP, TSOP5/6,.11,37	Reach Compliance Code：	compliant
风险等级：	5.77	控制模式：	CURRENT-MODE
JESD-30 代码：	R-PDSO-G5	JESD-609代码：	e3
湿度敏感等级：	1	端子数量：	5
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	0.6 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSOP	封装等效代码：	TSOP5/6,.11,37
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE
认证状态：	Not Qualified	子类别：	Switching Regulator or Controllers
表面贴装：	YES	最大切换频率：	3450 kHz
温度等级：	INDUSTRIAL	端子面层：	Tin (Sn)
端子形式：	GULL WING	端子节距：	0.95 mm
端子位置：	DUAL	Base Number Matches：	1

XC9237C2CCML 数据手册

XC9235/XC9236/XC9237 Series

■ELECTRICAL CHARACTERISTICS

XC9237A18Cxx, V_OUT=1.8V, FOSC=1.2MHz, Ta=25℃

PARAMETER

SYMBOL

CONDITIONS

MIN. TYP. MAX. UNIT CIRCUIT

When connected to external components,

V_IN=V_CE=5.0V, I_OUT=30mA

Output Voltage

V_OUT

V_IN

1.764 1.800 1.836

①

Operating Voltage Range

Maximum Output Current

2.0

6.0

V_IN=V_OUT(E)+2.0V, V_CE=1.0V,

I_OUTMAX

600

When connected to external components ^(*9)

V_CE=V_IN, V_OUT=0V,

U.V.L.O. Voltage

V_UVLO

1.00 1.40 1.78

②

Voltage which Lx pin holding “L” level ^{(*1, *11)}

Supply Current

Stand-by Current

I_DD

I_STB

V_IN=V_CE=5.0V, V_OUT=V_OUT(E)×1.1V

V_IN=5.0V, V_CE=0V, V_OUT=V_OUT(E)×1.1V

1.0

μA

③

When connected to external components,

V_IN=V_OUT(E)+2.0V, V_CE=1.0V, I_OUT=100mA

Oscillation Frequency

PFM Switching Current

FOSC

I_PFM

1020 1200 1380 kHz

①

When connected to external components,

120

160

200

V_IN=V_OUT(E)+2.0V, V_CE=V_IN, I_OUT=1mA ^(*12)

Maximum I_PFMLimit

Maximum Duty Cycle

Minimum Duty Cycle

MAXI_PFM

MAXDTY

MINDTY

V_CE=V_IN=(C-1), I_OUT=1mA ^(*12)

200

①

②

V_IN=V_CE=5.0V, V_OUT=V_OUT(E)×0.9V

V_IN=V_CE=5.0V, V_OUT=V_OUT(E)×1.1V

100

When connected to external components,

V_CE=V_IN=V_OUT(E)+1.2V, I_OUT=100mA

Efficiency ^(*2)

EFFI

①

Lx SW "H" ON Resistance 1

Lx SW "H" ON Resistance 2

Lx SW "L" ON Resistance 1

Lx SW "L" ON Resistance 2

Lx SW "H" Leak Current ^(*5)

Lx SW "L" Leak Current ^(*5)

Current Limit ^(*10)

R_LxH

V_IN=V_CE=5.0V, V_OUT=0V, I_Lx=100mA ^(*3)

V_IN=V_CE=3.6V, V_OUT=0V, I_Lx=100mA ^(*3)

V_IN=V_CE=5.0V ^(*4)

0.35 0.55

0.42 0.67

0.45 0.66

0.52 0.77

④

R_LxL

V_IN=V_CE=3.6V ^(*4)

I_LeakH

I_LeakL

I_LIM

V_IN=V_OUT=5.0V, V_CE=0V, Lx=0V

V_IN=V_OUT=5.0V, V_CE=0V, Lx=5.0V

V_IN=V_CE=5.0V, V_OUT=V_OUT(E)×0.9V ^(*8)

0.01

1.0

μA

⑤

⑥

900 1050 1350

Output Voltage

Temperature Characteristics V_OUT・△topr

△V_OUT

I_OUT=30mA, -40℃≦Topr≦85℃

±100

ppm/

℃

①

③

V_OUT=0V, Applied voltage to V_CE

CE "H" Voltage

CE "L" Voltage

V_CEH

V_CEL

0.65

V_SS

V_IN

Voltage changes Lx to “H” level ^(*11)

V_OUT=0V, Applied voltage to V_CE

0.25

Voltage changes Lx to “L” level ^(*11)

When connected to external components,

_OUT=1mA ^(*6), Voltage which oscillation

V_IN-

1.0

PWM "H" Level Voltage

V_PWMH

①

frequency becomes 1020 kHz≦FOSC≦

1380kHz ^(*13)

When connected to external components,

I_OUT=1mA ^(*6), Voltage which oscillation

frequency becomes FOSC＜1020kHz ^(*13)

V_IN=V_CE=5.0V, V_OUT=0V

V_IN–

0.25

PWM "L" Level Voltage

V_PWML

①

CE "H" Current

CE "L" Current

I_CEH

I_CEL

- 0.1

0.1

μA

⑤

V_IN=5.0V, V_CE=0V, V_OUT=0V

When connected to external components,

Soft Start Time

T_SS

0.5

1.0

2.5

①

⑦

V_CE=0V → V_IN, I_OUT=1mA

V_IN=V_CE=5.0V, V_OUT=0.8×V_OUT(E)

Latch Time

T_LAT

1.0

20.0

Short Lx at 1Ω resistance ^(*7)

Sweeping V_OUT, V_IN=V_CE=5.0V, Short Lx at

1Ω resistance, V_OUTvoltage which Lx

becomes “L” level within 1ms

Short Protection

Threshold Voltage

V_SHORT

0.675 0.900 1.150

⑦

Test conditions: Unless otherwise stated, VIN=5.0V, VOUT(E)=Setting Voltage

NOTE:

*1: Including hysteresis operating voltage range.

*2: EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100

*3: ON resistance (Ω)= (VIN - Lx pin measurement voltage) / 100mA

*4: R&D value

*5: When temperature is high, a current of approximately 10μA (maximum) may leak.

*6:The CE/MODE pin of the XC9237A series works also as an external switching pin of PWM control and PWM/PFM control. When the IC is in the

operation, control is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than VIN minus

0.3V, and to the PWM mode when the CE/MODE pin voltage is equal to or lower than VIN minus 1.0V and equal to or greater than VCEH.

*7:Time until it short-circuits VOUT with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.

*8: When VIN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.

*9: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.

If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.

*10: Current limit denotes the level of detection at peak of coil current.

*11: “H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V

*12: XC9235 series exclude IPFM and MAXIPFM because those are only for the PFM control’s functions.

*13: XC9235/9236 series exclude VPWMH and VPWML because those are only for the XC9237 series’ functions.

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