XCL221 datasheet(4/20 Pages) TOREX

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XCL221/XCL222 Series

■

ELECTRICAL CHARACTERISTICS

●

XCL221Bxx1ER-G/XCL222Bxx1ER-G

Ta=25℃

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNITS

CIRCUIT

Output Voltage

VOUT

When connected to external conponets,

IOUT =30mA

<E-1>

<E-2>

<E-3>

①

Operating Voltage Range

VIN

2.5

5.5

①

Maximum Output Current

IOUTMAX

When connected to external components,

VIN =<C-1>

500

①

UVLO Voltage (*2)

VUVLO

Vout=0.6V,

Voltage which Lx pin holding ”L” level (*6)

1.35

2.0

2.48

③

Quiescent Current

(XCL222)

VOUT =VOUT(E) ×1.1V

μA

②

Quiescent Current

(XCL221)

VOUT =VOUT(E) ×1.1V

250

450

μA

②

Stand-by Current

ISTB

VCE =0V

0.0

1.0

μA

②

Minimum ON time (*2)

tONmin

When connected to external components,

VIN =VCE=<C-1>, IOUT=1mA

<E-5>

<E-6>

<E-7>

①

Thermal Shutdown

TTSD

150

℃

①

Thermal shutdown

Hysteresis

THYS

℃

①

LxSW ”H” ON

Resistance

RLXH

VOUT=0.6V, ILX=100mA (*3)

0.24

0.37

Ω

④

LxSW ”L” ON

Resistance (*4)

RLXL

VOUT=VOUT(T) × 1.1V, ILX=100mA (*3)

0.16

0.30

Ω

④

LxSW ”H” Leakage

Current

ILeakH

VIN=5.5V, VCE=0V, VOUT=0V, VLX=5.5V

0.0

30.0

μA

⑤

LxSW ”L” Leakage

Current

ILeakL

VIN=5.5V, VCE=0V, VOUT=0V, VLX=0V

0.0

1.0

μA

⑤

Current Limit (*5)

ILIMH

VOUT=0.6V, ILx until Lx pin oscillates

1.3

1.5

2.5

⑥

Output Voltage

Temperature

Characteristics

∆VOUT/

(VOUT・∆topr)

IOUT=30mA

-40℃≦Topr≦105℃

±100

ppm/℃

①

CE”H” Voltage

VCEH

VOUT=0.6V, Applied voltage to VCE,

Voltage changes Lx to “H” level (*6)

1.4

VIN

③

CE”L” Voltage

VCEL

VFB=0.6V, Applied voltage to VCE,

Voltage changes Lx to “L” level (*6)

AGND

0.3

③

CE”H” Current

ICEH

VIN=5.5V, VCE=5.5V, VOUT=0V

-0.1

0.1

μA

⑤

CE”L” Current

ICEL

VIN=5.5V, VCE=0V, VOUT=0V

-0.1

0.1

μA

⑤

Soft-start Time

tSS

VCE=0V→5.0V, VOUT=VOUT(T)V × 0.9

After "H" is fed to CE, the time by

when clocks are generated at Lx pin.

0.10

0.30

0.50

③

Short Protection

Threshold Voltage

VSHORT

Sweeping VOUT, VOUT voltage which Lx

becomes “L” level (*6)

0.17

0.27

0.37

③

CL Discharge

RDCHG

VCE=0V, VOUT=4.0V

210

300

Ω

⑦

Inductance

Test Freq.=1MHz

4.7

μH

Inductor Rated Current

IDC

∆T=+40deg

700

Unless otherwise stated, VIN=5.0V, VCE=5.0V, VOUT(T)=Nominal Voltage

NOTE:

(*1) When the difference between the input and the output is small, 100% duty might come up and internal control circuits keep P-ch driver

turning on even though the output current is not so large.

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

(*2) Including UVLO detect voltage, hysteresis operating voltage range for UVLO release voltage.

(*3) RLXH=(VIN - Lx pin measurement voltage) / 100mA, RLXL=Lx pin measurement voltage / 100mA

(*4) Design value for the XCL222 series

(*5) Current limit denotes the level of detection at peak of coil current.

(*6) "H"

=VIN～VIN - 1.2V, "L"=- 0.1V～+ 0.1V

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