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参数资料
| 型号： | R5220D251B-TR |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 稳压器 |
| 英文描述： | 0.8 A SWITCHING REGULATOR, 1440 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | 0.85 MM HEIGHT, TSON-6 |
| 文件页数： | 18/22页 |
| 文件大小： | 627K |
| 代理商： | R5220D251B-TR |
R5220D
5
R5220DxxxB
(Topt
=25℃)
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
VIN
Operating Input Voltage
2.8
5.5
V
ISS1
Supply Current 1
(Standby mode)
VIN
=VOUT1+1.0V,VCE=VMODE=0V
VOUT
=VSET1:DC/DC Set Output Voltage
0.1
1.0
A
ISS2
Supply Current 2
(Power Save mode)
VIN
=VCE=VMODE=VOUT2+1.0V,
VOUT2:VR Set Output Voltage,IOUT
=0mA
5
10
A
ISS3
Supply Current 3
VIN
=VCE=3.6V,VMODE=GND
350
450
A
DC/DC Part
(Topt
=25℃)
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
VOUT1 >
= 1.5V
×0.98
×1.02
VOUT1
Output Voltage
VIN
=3.6V
IOUT
=50mA
VOUT1<1.5V
0.03
+0.03
V
fosc
Oscillator Frequency
VIN
=VSET1+1.5V
0.96
1.20
1.44
MHz
VOUT1<1.5V
0.15
0.30
TSTART
Soft-start Time
VIN
=3.6V
VOUT1 >
= 1.5V
0.20
0.35
ms
RONP
ON Resistance of Pch Transistor
VIN
=3.6V,ILX=100mA
0.5
RONN
ON Resistance of Nch Transistor VIN
=3.6V,ILX=100mA
0.5
ILXLEAK
LX Leakage Current
VIN
=5.5V,VCE=0V,LX=5.5V/0V
1.0
A
VOUT/
Topt
Output Voltage
Temperature Coefficient
40℃ <
= Topt <
= 85℃
±150
ppm/℃
Maxduty Oscillator Maximum Duty Cycle VOUT
=0V
100
%
ILXlim
LX Current Limit
VIN
=3.6V
500
800
mA
TPROT
Protection Delay Circuit
VIN
=3.6V
1.0
3.0
7.0
ms
VUVLO1
UVLO Threshold Voltage
VCE
=VIN,VMODE=GND, VOUT=0V
2.00
2.35
2.75
V
VUVLO2
UVLO Released Voltage
VCE
=VIN,VMODE=GND, VOUT=0V
2.05
2.45
2.80
V
VMODEH
MODE "H" Input Voltage
1.0
V
VMODEL
MODE "L" Input Voltage
0.0
0.3
V
VR Part
(Topt
=25℃)
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
VOUT2 >
= 1.5V
×0.98
×1.02
VOUT2
Output Voltage
VIN
=VOUT2+1.0V
IOUT
=10mA
VOUT2<1.5V
0.03
+0.03
V
IOUT
Output Current
VIN
=VOUT2+1.0V
50
mA
VOUT2<2.3V
15
40
VOUT2/
IOUT
Load Regulation
VIN
=VOUT2+1.0V
10
A <
= IOUT <
= 25mA
VOUT2 >
= 2.3V
25
50
mV
VOUT2<1.8V
0.7
VDIF
Dropout Voltage
IOUT
=50mA
VOUT2 >
= 1.8V
0.3
V
VOUT2<2.3V
VOUT2/
VIN
Line Regulation
IOUT
=25mA
2.8V <
= VIN <
= 5.5V
VOUT2
+0.5V <
= VIN <
= 5.5V
VOUT2 >
= 2.3V
0.2
%/V
RR
Ripple Rejection
Refer to Typical Characteristics
dB
VOUT/
Topt
Output Voltage
Temperature Coefficient
IOUT
=30mA,
40℃ <
= Topt <
= 85℃
±100
ppm/℃
Ilim
Short Current Limit
VOUT
=0V
60
mA
IPDC
CE pull-down current
0.12
0.40
0.70
A
VCEH
CE "H" Input Voltage
1.0
V
VCEL
CE "L" Input Voltage
0.0
0.3
V
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