Datasheet > XC9237A40DDR

XC9237A40DDR

更新时间： 2023-01-03 04:39:13

品牌	Logo	应用领域
特瑞仕 - TOREX		/
页数	文件大小	规格书
7页	237K
描述
Analog Circuit

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数据手册

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XC9237A40DDR 数据手册

XC9235/9236/9237

Series

■ELECTRICAL CHARACTERISTICS

XC9237A18Cxx

VOUT=1.8V, FOSC=1.2MHz, Ta=25℃

PARAMETER

SYMBOL

VOUT

CONDITIONS

MIN.

TYP.

MAX.

UNIT CIRCUIT

When connected to external components,

CE=VIN, IOUT=30mA

Output Voltage

1.764 1.800 1.836

Operating Voltage Range

Maximum Output Current

VIN

1.8

6.0

VIN=VOUT + 1.5V,

IOUTMAX

600

When connected to external components

CE=VIN, VOUT=0V, Voltage which Lx pin

voltage holding "L" level

VIN=CE=3.6V, VOUT=set voltage×1.1V

VIN=3.6V, CE=0V,

U.V.L.O. Voltage

Supply Current

Stand-by Current

VUVLO

IDD

1.00

1.40

1.78

μA

Istb

1.0

VOUT=set voltage×1.1V

When connected to external components,

IOUT=100mA

When connected to external components,

CE=VIN, IOUT=1mA

Oscillation Frequency

FOSC

1020

1200

160

1380

kHz

PFM Switch Current

Maximum IPFM Limit

IPFM

MAXIPFM

100

200

Maximum Duty Ratio MAXDTY CE=VIN, VOUT=0V

Minimum Duty Ratio

MINDTY CE=VOUT=VIN

When connected to external components,

CE=VIN=3.0V, IOUT=100mA

Efficiency

EFFI

Lx SW “H” ON Resistance

Lx SW “L” ON Resistance

Lx SW “H” Leak Current

Lx SW “L” Leak Current

Current Limit

RLxH

RLxL

ILeakH

ILeakL

ILIM

CE=0.5VIN, VOUT=0V, ILx=100mA

CE=0.5VIN, ILx=100mA

VIN=VOUT=5.0V, CE=0V, Lx=0V

VIN=VOUT=5.0V, CE=0V, Lx=5.0V

VIN=CE=5.0V, VOUT=setting voltage x 0.9V

0.42

0.52

0.01

900

1.0

μA

Output Voltage

Temperature Characteristics

△

OUT

IOUT=30mA, -40℃≦Topr≦85℃

±100

ppm/ ℃

VOUT・△topr

VOUT=0V, When CE voltage is applied Lx

determine "H"

VOUT=0V, When CE voltage is applied Lx

determine "L"

CE “H” Voltage

CE “L” Voltage

VCEH

VCEL

0.65

VSS

VIN

0.25

PWM “H” Level Voltage

PWM “L” Level Voltage

CE “H” Current

VPWMH

VPWML

ICEH

VIN - 1.0

0.1

μA

VIN - 0.3

- 0.1

CE “L” Current

ICEL

0.1

When connected to external components,

CE=0V → VIN, IOUT=1mA

VIN=CE=5.0V, VOUT=Setting Voltage x

0.9V, Short Lx by 1Ω resistance

Soft-Start Time

Latch Time

TSS

Tlat

1.0

msec

1.0

20.0

The ratio to the output voltage becomes a

VSHORT threshold voltage

ex.) When VOUT=1.8V, VSHORT=0.9V (TYP.)

Short Protection

Threshold Voltage

5/7

1 2 3 456 7

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