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PDF RP111N181B5 Data sheet ( Hoja de datos )
| Número de pieza | RP111N181B5 | |
| Descripción | Good Transient Response Low Voltage 500mA LDO | |
| Fabricantes | RICOH electronics | |
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RP111x Series
Good Transient Response Low Voltage 500mA LDO
NO.EA-241-150204
OUTLINE
The RP111x Series are CMOS-based LDO regulators featuring 500mA output current. The input voltage is as
low as 1.4V and the output voltage can be set from 0.7V. Due to a built-in 0.46Ω (at VOUT=2.8V) on-resistor, RP111x
can provide a low dropout voltage. RP111x also features an excellent line transient response, ripple rejection at
75dB, and low noise. The output voltage accuracy is as high as ±0.8% and the temperature drift coefficient of
output voltage is low at ±30ppm/C. The accuracy of the output voltage of RP111x includes the temperature
characteristics and the load transient response has been improved. The typ. and max value of under/overshoot
for various output current are shown in the typical characteristics in the datasheet, therefore the accuracy of the
output voltage estimation will be easy on the actual operating cases.
In addition to a fold-back protection circuit built into conventional regulators, RP111x contains a thermal
shutdown circuit and an inrush current limit circuit. SOT-23-5 and SOT-89-5 packages, a 1.2mm square
DFN1212-6 package are available.
FEATURES
Supply Current ......................................................Typ. 80A
Standby Current....................................................Typ. 0.1A
Dropout Voltage ....................................................Typ. 0.23V (IOUT500mA, VOUT2.5V)
Ripple Rejection....................................................Typ. 75dB (f1kHz)
Typ. 70dB (f10kHz)
Output Voltage Accuracy.......................................0.8% (VOUT ≥1.8V)
Output Voltage Temperature Coefficient ...............Typ. 30ppm/C (VOUT ≥1.8V)
Line Regulation .....................................................Typ. 0.02%/V
Packages ..............................................................DFN1212-6, SOT-23-5, SOT-89-5,
Input Voltage Range .............................................1.4V to 5.25V
Output Voltage Range...........................................0.7V to 3.6V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
Built-in Foldback Protection Circuit.......................Typ. 50mA (Current at short mode)
Thermal Shutdown Temperature...........................165C
Inrush Current Limit ..............................................Typ.400mA (for 180s after start-up)
Ceramic capacitors are recommended to be used with this IC .....1.0F or more
APPLICATIONS
Power source for portable communication equipment.
Power source for electrical appliances such as cameras, VCRs and camcorders.
Power source for battery-powered equipments.
Power source for electrical home appliances.
1
1 page  
RP111x
NO.EA-241-150204
ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN=Set VOUT +1.0V(VOUT >1.5), VIN=2.5V(VOUT 1.5V), IOUT=1mA, CIN=COUT=1.0μF.
The specifications surrounded by
are guaranteed by Design Engineering at 40°C Topt 85°C.
RP111xxx1B/D
Topt25C
Symbol
Item
VOUT
Output Voltage
IOUT Output Current
VOUT/IOUT Load Regulation
VTRLD
Load Transient
Response
VDIF
ISS
Istandby
Dropout Voltage
Supply Current
Standby Current
VOUT/VIN Line Regulation
VTRLN
Input Transient
Response
RR Ripple Rejection
VIN Input Voltage
VOUT/Topt
Output Voltage
Temperature Coefficient
ISC Short Current Limit
IPD CE Pull-down Current
VCEH
VCEL
TTSD
TTSR
CE Input Voltage "H"
CE Input Voltage "L"
Thermal Shutdown
Temperature
Thermal Shutdown
Released Temperature
en Output Noise
Conditions
Min. Typ.
Topt=25C
VOUT ≥ 1.8V
VOUT < 1.8V
0.992
18
-40C Topt
85C
VOUT ≥ 1.8V
VOUT < 1.8V
0.985
55
500
1mA IOUT 500mA
1
IOUT :1mA⇔250ｍA
(trtf0.5s)
COUT1F
COUT2.2F
75
+45
55
+35
IOUT 1mA⇔250ｍA
(trtf5.0s)
COUT1F
20
+15
Please refer to “Dropout Voltage”.
IOUT0mA
80
VCE0V
0.1
Set VOUT0.5V VIN 5.25V,
VIN ≥ 1.4V
VINSet VOUT0.5V⇔
Set VOUT1.5V(trtf5.0s),
VIN ≥ 1.4V,IOUT30mA
f1kHz,Ripple0.2Vp-p,
VINSet VOUT1.0V,IOUT30mA
(VOUT ≤ 2.0V, VIN3.0V)
0.02
1.5
+1.5
75
1.4
40C Topt 85C
VOUT ≥ 1.8V
VOUT < 1.8V
30
100
VOUT0V
50
0.3
1.0
Junction Temperature
Junction Temperature
BW10Hz~100kHz
VOUT ≥ 1.8V
VOUT < 1.8V
165
100
20
VOUT
40
VOUT
Max.
1.008
18
1.015
50
20
125
1.0
0.10
5.25
0.6
0.4
Unit
V
mV
V
mV
mA
mV
mV
A
A
%/V
mV
dB
V
ppm
/C
mA
A
V
V
C
Vrms
5
5 Page 
CIN1.0µF, COUT1.0µF, IOUT1mA Peak Output Current (tr=tf=5.0s)
RP111x
NO.EA-241-150204
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
0
TYP.
MAX.
100 200 300 400 500
Peak Output Current [mA]
35
30
25
20
15
10
5
0
0
MAX.
TYP.
100 200 300 400 500
Peak Output Current [mA]
Input Transient Response has the output voltage dependency. Please refer to the characteristics examples
below.
VIN: Set VOUT+0.5VSet VOUT+1.5V (trtf5.0µs), VIN≧1.4V,
COUT1.0µF, IOUT30mA
40
MAX.
3
TYP.
-1
2 -2
1
0
0.4
1.2 2.0 2.8 3.6
Set Output Voltage VREG (V)
-3
-4
0.4
MAX.
TYP.
1.2 2.0 2.8 3.6
Set Output Voltage VREG (V)
The graphs shown above are reference data.
For the better transient response, a capacitor with higher capacitance is recommended and the wire
impedance of GND and VOUT should be minimized as possible.
The transient response characteristics depend on the external parts and PCB layout. Therefore, the
operating conditions for the transient response in the application should be considered and evaluation is
necessary.
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet RP111N181B5.PDF ] | |
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