RP171x SERIES
150mA 10V INPUT LDO REGULATOR
NO.EA-245-170418
OUTLINE
The RP171x Series are CMOS-based LDO regulators featuring 150mA output current. Because of the 10V
maximum input voltage, RP171x can be used in 2 cell lithium-ion battery powered portable appliances and besides
a portable equipment. The supply current is Typ. 23µA though an excellent response characteristics.
The output voltage range from 1.2V is possible. The output voltage accuracy and temperature-drift coefficient
of output voltage of the RP171x Series are excellent.
RP171x has a fold-back protection circuit and a thermal shutdown circuit. Moreover, a standby mode with ultra-
low supply current can be realized with the chip enable function.
SC-88A and SOT-23-5 with high power dissipation packages are available.
FEATURES
•
Supply Current ............................................................. Typ. 23µA
•
Standby Mode .............................................................. Typ. 0.1µA
•
Dropout Voltage............................................................ Typ. 0.20V (I
OUT
=100mA,
V
OUT
=3.0V)
Typ. 0.40V (I
OUT
=150mA,
V
OUT
=2.8V)
•
Ripple Rejection ...........................................................Typ. 70dB (f=1kHz)
•
Temperature-Drift Coefficient of Output Voltage ..........Typ.
±80ppm/°C
•
Line Regulation ............................................................ Typ. 0.02%/V
•
Output Voltage Accuracy ..............................................
±1.0%
•
Packages ...................................................................... SC-88A, SOT-23-5
•
Input Voltage Range .....................................................2.6V to 10.0V
•
Output Voltage Range ..................................................1.2V to 6.0V (0.1V steps)
(
For other voltages, please refer to MARK INFORMATIONS.)
•
Built-in Fold Back Protection Circuit .............................Typ. 40mA (Current at short mode)
•
Built-in Thermal Shutdown Circuit ................................Shutdown Temperature at 165°C
•
Built-in Constant Slope Circuit (Soft-start Function)
•
Ceramic capacitors are recommended to be used with this IC .... 1.0µF 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 equipment.
Power source for home appliances.
1
RP171x
NO.EA-245-170418
BLOCK DIAGRAMS
RP171xxxxB
RP171xxxxD
V
DD
V
OUT
V
DD
V
OUT
Vref
Current Limit
Thermal Shutdown
Vref
Current Limit
Thermal Shutdown
CE
GND
CE
GND
SELECTION GUIDE
The output voltage, auto-discharge function, and package, etc. for the ICs can be selected at the user’s request.
Product Name
RP171Qxx2∗-TR-FE
RP171Nxx1∗-TR-FE
Package
SC-88A
SOT-23-5
Quantity per Reel
3,000 pcs
3,000 pcs
Pb Free
Yes
Yes
Halogen Free
Yes
Yes
xx : The output voltage can be designated in the range from 1.2V(12) to 6.0V(60) in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
∗
: The auto discharge function at off state are options as follows.
(B) without auto discharge function at off state
(D) with auto discharge function at off state
Auto-discharge function quickly lowers the output voltage to 0V by releasing the electrical charge accumulated in the
external capacitor when the chip enable signal is switched from the active mode to the standby mode.
2
RP171x
NO.EA-245-170418
PIN CONFIGURATIONS
•
SC-88A
5
4
•
SOT-23-5
5
4
(mark side)
(mark side)
1
2
3
1
2
3
PIN DESCRIPTIONS
•
SC-88A
Pin No.
1
2
∗
3
4
5
Symbol
CE
NC
GND
V
OUT
V
DD
Pin Description
Chip Enable Pin ("H" Active)
No Connection
Ground Pin
Output Pin
Input Pin
∗
Pin No. 2 is connected to the bottom of the IC. It is recommended that the pin be connected to the ground plane on the
board, or otherwise be left floating so that there is no contact with other potentials.
•
SOT-23-5
Pin No
1
2
3
4
5
Symbol
V
DD
GND
CE
NC
V
OUT
Input Pin
Ground Pin
Chip Enable Pin ("H" Active)
No Connection
Output Pin
Pin Description
3
RP171x
NO.EA-245-170418
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT
P
D
T
opt
T
stg
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current
Power Dissipation
∗
(SC-88A)
Power
Dissipation
∗
(SOT-23-5)
Item
Rating
12
12
−0.3
to V
IN
+0.3
330
380
420
−40
to 85
−55
to 125
°C
°C
Unit
V
V
V
mA
mW
Operating Temperature Range
Storage Temperature Range
∗
For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field.
The functional operation at or over these absolute maximum ratings is not assured.
RECOMMENDED OPERATING CONDITIONS
(ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
4
RP171x
NO.EA-245-170418
ELECTRICAL CHARACTERISTICS
V
IN
=Set
V
OUT
+1V,
I
OUT
=1mA,
unless otherwise noted.
The specifications in
are guaranteed by Design Engineering at - 40ºC
≤
Ta
≤
85ºC.
RP171xxxxB/D
Symbol
Topt=25°C
Item
T
opt
=25°C
Conditions
V
OUT
> 1.5V
V
OUT
≤
1.5V
V
OUT
> 1.5V
V
OUT
≤
1.5V
Min.
×0.99
−15
×0.974
−40
150
Typ.
Max.
×1.01
+15
×1.023
+35
Unit
V
mV
V
mV
mA
V
OUT
Output Voltage
−40°C
≤
T
opt
≤
85°C
I
OUT
Output Current
0.1mA
≤
I
OUT
≤
150mA
1.2V
≤
V
OUT
< 1.3V
1.3V
≤
V
OUT
< 1.5V
1.5V
≤
V
OUT
< 1.8V
∆V
OUT
/∆I
OUT
Load Regulation
5
-
-
-
-
0.400
0.300
0.250
23
0.1
±0.02
70
2.6
40
1.400
1.300
1.100
0.800
0.580
0.480
0.400
40
1.0
±0.2
mV
V
DIF
Dropout Voltage
I
OUT
=150mA
1.8V
≤
V
OUT
< 2.3V
2.3V
≤
V
OUT
< 3.0V
3.0V
≤
V
OUT
< 4.0V
4.0V
≤
V
OUT
≤
6.0V
V
I
SS
I
standby
∆V
OUT
/∆V
IN
RR
V
IN
∆V
OUT
/∆T
opt
I
SC
I
PD
V
CEH
V
CEL
T
TSD
T
TSR
en
R
LOW
Supply Current
Standby Current
Line Regulation
Ripple Rejection
Input Voltage
Output Voltage
Temperature Coefficient
Short Current Limit
CE Pull-down Current
CE Input Voltage "H"
CE Input Voltage "L"
Thermal Shutdown
Temperature
Thermal Shutdown
Released Temperature
Output Noise
Low Output Nch Tr.
ON Resistance
(of D version)
I
OUT
=0mA
V
IN
=10.0V,
V
CE
=GND
Set V
OUT
+0.5V
≤
V
IN
≤
10.0V
(In case that V
OUT
≤
2.1V,
2.6V
≤
V
IN
≤
10.0V)
f=1kHz, Ripple 0.2Vp-p, I
OUT
=30mA
(In case that V
OUT
< 2.0V, V
IN
=3.0V)
µA
µA
%/V
dB
10
±80
40
0.30
V
ppm/°C
mA
µA
V
−40°C
≤
T
opt
≤
85°C
V
OUT
=0V
1.7
0.8
Junction Temperature
Junction Temperature
BW=10Hz to 100kHz
V
IN
=7.0V
V
CE
=0V
165
110
100
250
V
°C
°C
µVrms
Ω
All of unit are tested and specified under load conditions such that Tj≈T
opt
=25°C
except for Output Noise, Ripple
Rejection, Output Voltage Temperature Coefficient and Thermal Shutdown.
5
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