R1212D Datasheet, PDF (8/41 Pages) RICOH electronics devices division – STEP-UP DC/DC CONTOLLER

R1212D
• R1212D102A
Topt=25°C
Symbol
VIN
VFB
∆VFB/∆VIN
∆VFB/
∆Topt
IFB
AV
fT
fosc
∆fosc/
∆VIN
∆fosc/
∆Topt
IDD1
VREFOUT
IOUT
∆VREFOUT/
∆VIN
∆VREFOUT/
∆IROUT
Ilim
∆VREFOUT/
∆Topt
REXTH
REXTL
tr
tf
IDLY1
IDLY2
VDLY
VUVLO1
VUVLO2
VDTC0
VDTC20
VDTC80
Maxduty
IAMPH
IAMPL
Item
Operating Input Voltage
VFB Voltage Tolerance
VFB Voltage Line Regulation
VFB Voltage Temperature
Coefficient
VFB Input Current
Open Loop Voltage Gain
Unity Gain Frequency Band
Oscillator Frequency
Oscillator Frequency Line
Regulation
Oscillator Frequency
Temperature Coefficient
Supply Current 1
VREFOUT Voltage
VREFOUT Maximum Output
Current
VREFOUT Line Regulation
Conditions
VIN=3.3V
VIN: from 2.2V to 5.5V
−40°C ^<= Topt ^<= 85°C
VIN=5.5V, VFB=0V or 5.5V
VIN=3.3V
VIN=3.3V, AV=0
VIN=3.3V, VDLY=VFB=0V
VIN: from 2.2V to 5.5V
Min. Typ. Max.
3.3
5.5
0.985 1.000 1.015
3
±150
−0.1
0.1
100
1.0
595 700 805
50
−40°C ^<= Topt ^<= 85°C
±1.0
VIN=5.5V, VDLY=VFB=0V EXT at no load
600 1000
VIN=3.3V, IROUT=1mA
1.478 1.500 1.522
VIN=3.3V
10
VIN: from 2.2V to 5.5V
5
10
VREFOUT Load Regulation
VIN=3.3V, IROUT: from 0.1mA to 5.0mA
6
15
VREFOUT Short Current Limit
VIN=3.3V, VREFOUT=0V
VREFOUT Voltage Temperature
Coefficient
−40°C ^<= Topt ^<= 85°C
EXT "H" ON Resistance
VIN=3.3V, IEXT=−50mA
EXT "L" ON Resistance
VIN=3.3V, IEXT=50mA
EXT Rising Time
VIN=3.3V, CL=1000pF
EXT Falling Time
VIN=3.3V, CL=1000pF
DELAY Pin Charge Current
VIN=3.3V, VDLY=VFB=0V
DELAY Pin Discharge Current VIN=VFB=2.2V, VDLY=0.1V
DELAY Pin Detector Threshold VIN=3.3V, VFB=0V, VDLY=0V to 2V
UVLO Detector Threshold
VIN=3.3V to 0V, VDLY=VFB=0V
UVLO Released Voltage
VIN=0V to 3.3V, VDLY=VFB=0V
Duty=0% DTC Pin Voltage
Duty=20% DTC Pin Voltage
Duty=80% DTC Pin Voltage
Maximum Duty Cycle
AMP "H" Output Current
AMP "L" Output Current
VIN=3.3V
VIN=3.3V
VIN=3.3V
VIN=3.3V
VIN=3.3V, VAMP=1.0V, VFB=0.9V
VIN=3.3V, VAMP=1.0V, VFB=1.1V
20
±150
2.5 6.0
1.5 4.0
12
8
3.0 5.5 8.0
0.08 0.20 0.36
0.95 1.00 1.05
2.6 2.8 3.0
VUVLO1
+ 0.25
3.3
0.05 0.18 0.25
0.3
0.75
84 90 96
0.5 1.0 1.8
60 100 160
Unit
V
V
mV
ppm/
°C
µA
dB
MHz
KHz
KHz
KHz/
°C
µA
V
mA
mV
mV
mA
ppm/
°C
Ω
Ω
ns
ns
µA
mA
V
V
V
V
V
V
%
mA
µA
8