R1211D104A Просмотр технического описания (PDF) - RICOH Co.,Ltd.

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R1211D104A

STEP-UP DC/DC CONTROLLER

RICOH Co.,Ltd. 

R1211x

ELECTRICAL CHARACTERISTICS

• R1211x002A

Symbol

VIN

VFB

∆VFB/∆T

IFB

fOSc

∆fOSc/∆T

IDD1

Item

Operating Input Voltage

VFB Voltage Tolerance

VFB Voltage

Temperature Coefficient

VFB Input Current

Oscillator Frequency

Oscillator Frequency

Temperature Coefficient

Supply Current 1

maxdty

REXTH

REXTL

IDLY1

IDLY2

Maximum Duty Cycle

EXT "H" ON Resistance

EXT "L" ON Resistance

Delay Pin Charge Current

Delay Pin Discharge Current

VDLY

Delay Pin Detector Threshold

TSTART Soft-start Time

VUVLO1 UVLO Detector Threshold

VUVLO2 UVLO Detector Hysteresis

IAMP1

AMP "H" Output Current

IAMP2

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 at 90% of

rising edge

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

−0.1

595

Typ.

1.000

±150

700

±1.4

Topt=25°C

Max. Unit

6.0

V

1.015 V

ppm/°C

0.1

µA

805 kHz

kHz/°C

600 900 µA

82

90

94

%

5

10

Ω

3

6

Ω

2.5

5.0

7.5

µA

2.5

5.5

9.0

mA

0.95 1.00 1.05

V

4.5

9.0 13.5 ms

2.1

2.2

2.3

V

0.08 0.13 0.18

V

0.45 0.90 1.50 mA

30

60

90

µA

4

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