R1282D002A Datasheet, PDF (4/18 Pages) RICOH electronics devices division – 2CH PWM DC/DC CONTROLLER

R1282D002A
ELECTRICAL CHARACTERISTICS
Symbol
Item
VIN
Operating Input Voltage
VREFOUT
VREFOUT Voltage Tolerance
IROUT
VREFOUT Output Current
∆VREFOUT/∆VIN VREFOUT Line Regulation
∆VREFOUT/∆IOUT VREFOUT Load Regulation
ILIM
VREFOUT Short Current Limit
∆VREFOUT/∆T
VREFOUT Voltage
Temperature Coefficient
VFB1
VFB1 Voltage
∆VFB1/∆T
∆VFB2/∆T
VFB1 Voltage
Temperature Coefficient
VFB2 Voltage
Temperature Coefficient
IVFB1,2
VFB1,2 Input Current
fOSC
Oscillator Frequency
IDD1
REXTH1
REXTL1
REXTH2
REXTL2
TDLY
VUVLOD
Supply Current
EXT1 "H" ON Resistance
EXT1 "L" ON Resistance
EXT2 "H" ON Resistance
EXT2 "L" ON Resistance
Delay Time for Protection
UVLO Detector Threshold
VUVLO
UVLO Released Voltage
VDTC10
VDTC1100
VDTC20
VDTC2100
AV1
FT1
CH1 Duty=0%
CH1 Duty=100%
CH2 Duty=0%
CH2 Duty=100%
CH1 Open Loop Gain
CH1 Single Gain
Frequency Band
VICR1
CH1 Input Voltage Range
IAMPL
CH1 Sink Current
IAMPH
AV2
FT2
VICR2
VFB2
CH1 Source Current
CH2 Open Loop Gain
CH2 Single Gain
Frequency Band
CH2 Input Voltage Range
CH2 Reference Voltage
Conditions
VIN=3.3V, IOUT=1mA
VIN=3.3V
2.5V ^<= VIN ^<= 5.5V
1mA ^<= IROUT ^<= 10mA VIN=3.3V
VIN=3.3V, VREFOUT=0V
−40°C ^<= Topt ^<= 85°C
VIN=3.3V
−40°C ^<= Topt ^<= 85°C
−40°C ^<= Topt ^<= 85°C
VIN=5.5V,VFB1 or VFB2=0V or 5.5V
EXT1,2 Pins at no load,
VIN=3.3V
VIN=5.5V, EXT1,2 pins at no load
VIN=3.3V, IEXT=−20mA
VIN=3.3V, IEXT=20mA
VIN=3.3V, IEXT=−20mA
VIN=3.3V, IEXT=20mA
VIN=3.3V, VFB1=1.1V→0V
VIN=3.3V
VIN=3.3V
VIN=3.3V
VIN=3.3V
VIN=3.3V
VIN=3.3V, AV1=0dB
VIN=3.3V
VIN=3.3V,
VAMPOUT1=1.0V,VFB1=VFB1+ 0.1V
VIN=3.3V,
VAMPOUT1=1.0V,VFB1=VFB1− 0.1V
VIN=3.3V
VIN=3.3V, AV2=0dB
VIN=3.3V
VIN=3.3V
Min.
2.5
1.478
20
0.985
−0.1
595
60
2.10
0.1
1.1
0.1
1.1
70
0.985
Typ.
1.500
2
6
25
±150
1.000
±150
±150
700
1.4
4.0
2.7
4.0
3.7
100
2.20
VUVLOD
+0.20
0.2
1.2
0.2
1.2
110
1.9
0.7 to
VIN
115
−1.4
60
600
−0.2 to
VIN−1.3
1.000
Topt=25°C
Max. Unit
5.5
V
1.522 V
mA
6
mV
12
mV
mA
ppm/°C
1.015 V
ppm/°C
ppm/°C
0.1
µA
805 kHz
3.0 mA
8.0
Ω
5.0
Ω
8.0
Ω
8.0
Ω
140 ms
2.35
V
2.48
V
0.3
V
1.3
V
0.3
V
1.3
V
dB
MHz
V
µA
−0.7 mA
dB
kHz
V
1.015 V
4