Synchronous Step-Down DC/DC Converter with Built-In LDO Regulator in Parallel plus Voltage Detector

XC9509HxxCAx

% Common Characteristics

% DC/DC Converter (2.2V product)

% Regulator (1.8V product)

VMH

IROUT=30mA

IDOUT=30mA

-40

MODE 'H' Level Voltage

0.6

Connected to the external components,

IDOUT=10mA

-

1

IMH

- 0.1

Connected to the external components,

IDOUT=30mA

1

V

3

IDD2

3

MODE 'L' Level Current

µΑ

IML

- 0.1

-

MODE 'H' Level Current

MODE 'L' Level Voltage

VML

VSS

- 0.1

CONDITIONS

µΑ

-

0.25

V

0.1

µΑ

Ta=25

1

0.1

2

Ta=25

mA

3

mV

7

7

2

ppm

/

V

2

- 0.1

-

0.1

21

UNITS

mA

-

3

-

-

0.25

-

VDD

0.1

-

1.2

-

38

30

CE 'L' Level Voltage

VCEL

VSS

3

VDD

µΑ

1

V

1

3

V

1.40

2.5

-

µΑ

-

6.0

1.78

Supply Current 2

-

µΑ

1

300

-

µΑ

1

-

240

PARAMETER

SYMBOL

MIN.

IDD1

VIN=CE=DCOUT=5.0V

MAX.

V

3

mA

2

mS

VROUT=VSS

VIN={VOUT(T) + 1.0} VDC + 0.5Vp-pAC

IROUT=30mA, f=1kHz

-60

2

6

-

0.5

-

5

3

-

-

-

-

MAX.

3

TYP.

±100

3

TEST CIRCUIT

PFM Duty Ratio

CONDITIONS

%

Ω

UNITS

-%

0%

-

Connected to the external components,

No Load

DCOUT=VIN

TEST CIRCUIT

2.156

2.200

2.244

V

3

MIN.

TYP.

MAX.

Manimum Duty Ratio

MINDUTY

3

4

MAXDUTY

1.02

Oscillation Frequency

FOSC

Maximum Duty Ratio

DCOUT=0V

PFMDUTY

3

1.20

1.38

MHz

100

-

--

4

RLXL

LX SW 'High' On Resistance

(note 3)

RLXH

-

Ω

DCOUT=0V, LX=VIN-0.05V

0.5

600

%

Connected to the external components,

IDOUT=100mA

-90

-A

-

Efficiency (note 4)

EFFI

Temperature Characteristics

Output Voltage

! VOUT

TSS

-

PARAMETER

SYMBOL

MIN.

Connected to the external components,

CE=0V

"VIN, IDOUT=1mA

Latch Time (note 5)

Tlat

CONDITIONS

%/V

2

Maximum Output Current

IMAX2

200

-

Load Regulation

! VROUT

Dropout Voltage 1 (note 6)

Vdif 1

mV

2

15

50

mV

2

30

-

-

85

-

0.6

Current Limit

Line Regulation

ILIM2

Output Voltage

VROUT(E)

CE 'H' Level Current

ICEH

! VOUT

Soft Start Time

Stand-by Current (note 1)

ISTB

CE 'H' Level Voltage

VCEH

VIN

Input Voltage Range

VUVLO

U.V.L.O. Voltage (note 2)

Supply Current 1

XC9509 Series

Ta=25

TYP.

VIN=CE=5.0V, DCOUT=0V

V

-

0.6

-

-

VIN=6.5V, CE=0V

1.00

2.4

ILIM1

Current Limit

PARAMETER

Output Voltage

SYMBOL

DCOUT

Maximum Output Current

IMAX1

LX SW 'Low' On Resistance

CE 'L' Level Current

ICEL

IDOUT=30mA

-40

mS

-

ppm

/

5

Connected to the external components,

VIN=CE=5.0V,

Short DCOUT by 1

Ω resistor

-8

1.800

1.764

1.836

1mA<IROUT<100mA

IROUT=30mA

IROUT=100mA

-

-

-dB

VROUT(T)+1V<VIN<6V

VROUT=VROUT(E)x0.9

-

-

mA

300

-

-

0.2

PSRR

! VOUT

-

-

-

±100

IROUT=30mA

30

Ripple Rejection Rate

Dropout Voltage 2

Vdif 2

Short-Circuit Current

ISHORT

-

Temperature Characteristics

Output Voltage

Semiconductor Ltd.

Data Sheet

4