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R1211D103C Datasheet(PDF) 7 Page - RICOH electronics devices division

Part # R1211D103C
Description  STEP-UP DC/DC CONTROLLER
PDF  40 Pages
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Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division

R1211D103C Datasheet(HTML) 7 Page - RICOH electronics devices division

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R1211x
7
• R1211x002D
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
VIN
Operating Input Voltage
2.5
6.0
V
VFB
VFB Voltage Tolerance
VIN
=3.3V
0.985
1.000
1.015
V
∆VFB/∆T
VFB Voltage
Temperature Coefficient
−40°C <
= Topt <
= 85°C
±150
ppm/
°C
IFB
VFB Input Current
VIN
=6V, VFB=0V or 6V
−0.1
0.1
µA
fOSC
Oscillator Frequency
VIN
=3.3V, VDLY=VFB=0V
240
300
360
kHz
∆fOSC/∆T
Oscillator Frequency
Temperature Coefficient
−40°C <
= Topt <
= 85°C
±0.6
kHz/
°C
IDD1
Supply Current 1
VIN
=6V, VDLY=VFB=0V,
EXT at no load
300
500
µA
maxdty
Maximum Duty Cycle
VIN
=3.3V, EXT "H" side
82
90
94
%
REXTH
EXT "H" ON Resistance
VIN
=3.3V, IEXT=−20mA
5
10
Ω
REXTL
EXT "L" ON Resistance
VIN
=3.3V, IEXT=20mA
3
6
Ω
IDLY1
Delay Pin Charge Current
VIN
=3.3V, VDLY=VFB=0V
2.0
4.5
7.0
µA
IDLY2
Delay Pin Discharge Current
VIN
=VFB=2.5V, VDLY=0.1V
2.5
5.5
9.0
mA
VDLY
Delay Pin Detector Threshold
VIN
=3.3V, VFB=0V,
VDLY
=0V→2V
0.95
1.00
1.05
V
TSTART
Soft-start Time
VIN
=3.3V
5.0
10.5
16.0
ms
VUVLO1
UVLO Detector Threshold
VIN
=3.3V→0V,
VDLY
=VFB=0V
2.1
2.2
2.3
V
VUVLO2
UVLO Detector Hysteresis
VIN
=0V→3.3V,
VDLY
=VFB=0V
0.08
0.13
0.18
V
ISTB
Standby Current
VIN
=6V, VCE=0V
0
1
µA
ICEH
CE "H" Input Current
VIN
=6V, VCE=6V
−0.5
0.5
µA
ICEL
CE "L" Input Current
VIN=6V, VCE=0V
−0.5
0.5
µA
VCEH
CE "H" Input Voltage
VIN=6V, VCE=0V
→6V
1.5
V
VCEL
CE "L" Input Voltage
VIN=2.5V, VCE=2V
→0V
0.3
V



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