R1211X 데이터 시트보기 (PDF) - RICOH Co.,Ltd.

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R1211X

STEP-UP DC/DC CONTROLLER

RICOH Co.,Ltd. 

R1211x

• R1211x002C

Symbol

VIN

VFB

∆VFB/∆T

IFB

fOSC

∆fOSC/∆T

IDD1

maxdty

REXTH

REXTL

IDLY1

IDLY2

VDLY

TSTART

VUVLO1

VUVLO2

IAMP1

IAMP2

Item

Operating Input Voltage

VFB Voltage Tolerance

VFB Voltage

Temperature Coefficient

VFB Input Current

Oscillator Frequency

Oscillator Frequency

Temperature Coefficient

Supply Current 1

Maximum Duty Cycle

EXT "H" ON Resistance

EXT "L" ON Resistance

Delay Pin Charge Current

Delay Pin Discharge Current

Delay Pin Detector Threshold

Soft-start Time

UVLO Detector Threshold

UVLO Detector Hysteresis

AMP "H" Output Current

AMP "L" Output Current

Conditions

VIN=3.3V

−40°C <= Topt <= 85°C

VIN=6V, VFB=0V or 6V

VIN=3.3V, VDLY=VFB=0V

−40°C <= Topt <= 85°C

VIN=6V, VDLY=VFB=0V,

EXT at no load

VIN=3.3V, EXT "H" side

VIN=3.3V, IEXT=−20mA

VIN=3.3V, IEXT=20mA

VIN=3.3V, VDLY=VFB=0V

VIN=VFB=2.5V, VDLY=0.1V

VIN=3.3V, VFB=0V,

VDLY=0V→2V

VIN=3.3V

VIN=3.3V→0V,

VDLY=VFB=0V

VIN=0V→3.3V,

VDLY=VFB=0V

VIN=3.3V, VAMP=1V,

VFB=0.9V

VIN=3.3V, VAMP=1V,

VFB=1.1V

Min.

2.5

0.985

Typ.

1.000

Topt=25°C

Max. Unit

6.0

V

1.015 V

±150

ppm/°C

−0.1

0.1

µA

240 300 360 kHz

±0.6

kHz/°C

300 500 µA

82

90

94

%

5

10

Ω

3

6

Ω

2.0

4.5

7.0

µA

2.5

5.5

9.0

mA

0.95 1.00 1.05

V

5.0 10.5 16.0 ms

2.1

2.2

2.3

V

0.08 0.13 0.18

V

0.45 0.90 1.50 mA

25

50

75

µA

6

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