R1212D Datasheet, PDF (5/41 Pages) RICOH electronics devices division – STEP-UP DC/DC CONTOLLER

R1212D
• R1212D100B
Topt=25°C
Symbol
Item
Conditions
VIN Operating Input Voltage
VFB VFB Voltage Tolerance
VIN=3.3V
∆VFB/∆VIN VFB Voltage Line Regulation VIN: from 2.2V to 5.5V
∆VFB/ VFB Voltage Temperature
∆Topt Coefficient
−40°C ^<= Topt ^<= 85°C
IFB
VFB Input Current
VIN=5.5V, VFB=0V or 5.5V
AV Open Loop Voltage Gain
VIN=3.3V
fT
Unity Gain Frequency Band VIN=3.3V, AV=0
fosc Oscillator Frequency
VIN=3.3V, VDLY=VFB=0V
∆fosc/ Oscillator Frequency Line
∆VIN Regulation
VIN: from 2.2V to 5.5V
∆fosc/ Oscillator Frequency
∆Topt Temperature Coefficient
−40°C ^<= Topt ^<= 85°C
IDD1 Supply Current 1
VIN=5.5V, VDLY=VFB=0V EXT at no load
VREFOUT VREFOUT Voltage
VIN=3.3V, IROUT=1mA
IOUT
VREFOUT Maximum Output
Current
VIN=3.3V
∆VREFOUT/
∆VIN
VREFOUT Line Regulation
VIN: from 2.2V to 5.5V
∆VREFOUT/
∆IROUT
VREFOUT Load Regulation
VIN=3.3V, IROUT: from 0.1mA to 5.0mA
Ilim
VREFOUT Short Current Limit
VIN=3.3V, VREFOUT=0V
∆VREFOUT/ VREFOUT Voltage Temperature
∆Topt Coefficient
−40°C ^<= Topt ^<= 85°C
REXTH EXT "H" ON Resistance
VIN=3.3V, IEXT=−50mA
REXTL EXT "L" ON Resistance
VIN=3.3V, IEXT=50mA
tr
EXT Rising Time
VIN=3.3V, CL=1000pF
tf
EXT Falling Time
VIN=3.3V, CL=1000pF
IDLY1 DELAY Pin Charge Current VIN=3.3V, VDLY=VFB=0V
IDLY2
VDLY
DELAY Pin Discharge Current VIN=VFB=2.2V, VDLY=0.1V
DELAY Pin Detector
Threshold
VFB=0V, VDLY=0V to 2V
VUVLO1 UVLO Detector Threshold
VIN=3.3V to 0V, VDLY=VFB=0V
VUVLO2 UVLO Released Voltage
VIN=0V to 3.3V, VDLY=VFB=0V
VDTC0
VDTC20
VDTC80
VDTC100
IAMPH
IAMPL
Duty=0% DTC Pin Voltage
Duty=20% DTC Pin Voltage
Duty=80% DTC Pin Voltage
Duty=100% DTC Pin Voltage
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
Min.
2.2
0.985
−0.1
1.19
1.478
10
3.0
0.08
0.95
1.8
0.05
0.80
0.5
60
Typ.
1.000
3
±150
100
1.0
1.40
100
±2.0
900
1.500
5
6
20
±150
2.5
1.5
12
8
5.5
0.20
1.00
1.9
VUVLO1
+ 0.2
0.18
0.3
0.75
0.87
1.0
100
Max. Unit
5.5 V
1.015 V
mV
ppm/
°C
0.1 µA
dB
MHz
1.61 MHz
KHz
KHz
/°C
1800 µA
1.522 V
mA
10 mV
15 mV
6.0
4.0
8.0
0.36
mA
ppm/
°C
Ω
Ω
ns
ns
µA
mA
1.05 V
2.0 V
2.2 V
0.25 V
V
V
1.00 V
1.8 mA
160 µA
5