RP171N Series
AEC-Q100 Grade 2 Compliant
150 mA 10 V LDO Regulator for Automotive Applications
NO. EC-245-150210
OUTLINE
The RP171x is a LDO regulator featuring 150 mA output current that is developed with CMOS process
technology. The RP171x offers the maximum input voltage of 10 V which makes it ideal for the use in car audio
equipment, car navigation system and ETC system. The RP171x provides a supply current as low as Typ. 23 µA
and achieves fast-response characteristics.
The RP171x offers an output voltage as low as 1.2 V. Compared to existing high-speed lines, the RP171x
provides excellent output voltage accuracy and output voltage temperature coefficient
Internally, the RP171x consists of a fold-back protection circuit and a thermal shutdown circuit. A standby mode
with ultra low supply current has been realized by a chip enable function.
The RP171x is available in a 5-pin SOT-23-5 package with high power dissipation.
FEATURES
Input Voltage Range (Absolute Maximum Ratings) ········ 2.6 V to 10 V (12 V)
Operating Temperature ···········································
−40°C
to 105°C
Supply Current ······················································ Typ. 23 µA (V
IN
= V
SET
+1.0 V)
Standby Current ··················································· Typ. 0.1µA (V
IN
= 10.0 V, CE = “L”)
Output Voltage Range ····································· 1.2 V/1.5 V/1.8 V/2.5 V/2.8 V/3.0 V/3.3 V/3.4 V/5.0 V/6.0 V
* Contact Ricoh sales representatives for other voltages.
Output Voltage Accuracy ········································ ±1.0%
Output Voltage Temperature Coefficient ····················· Typ. ±80 ppm/°C
Line Regulation ···················································· Typ. 0.02%/V
Dropout Voltage···················································· Typ. 0.4 V (I
OUT
= 150 mA, V
SET
= 2.8 V)
Ripple Rejection ··················································· Typ. 70 dB (f = 1 kHz)
Fold-back Protection Circuit ···································· Typ. 40 mA
Constant Slope Circuit (Soft-start Function)
Thermal Shutdown Circuit ······································· Stops at 165°C
Auto-discharge Function ········································· RP171xxxxD
Package ····························································· SOT-23-5
Ceramic Capacitor Compatible ································ 1.0 µF or more
APPLICATIONS
Power source for car audio equipment, car navigation system, ETC system, etc.
1
RP171N
NO. EC-245-150210
BLOCK DIAGRAM
RP171xxxxB Block Diagram
V
DD
V
OUT
RP171xxxxD Block Diagram
V
DD
V
OUT
Vref
Current Limit
Thermal Shutdown
Vref
Current Limit
Thermal Shutdown
CE
GND
CE
GND
SELECTION GUIDE
The set output voltage, the auto-discharge function and the automotive class are user-selectable options.
Product Name
RP171Nxx1-TR-#E
Package
SOT-23-5
Quantity per Reel
3,000 pcs
Pb Free
Yes
Halogen Free
Yes
xx: Specify the set output voltage (V
SET
) within the range of
1.2 V / 1.5 V / 1.8 V / 2.5 V / 2.8 V / 3.0 V / 3.3 V / 3.4 V / 5.0 V / 6.0 V
* Contact Ricoh sales representatives for other voltages.
Select
from (B) CE = Active-high without auto-discharge function or (D) CE = Active-high with Auto-
discharge function.
#: Specify the automotive class code.
Operating
Temperature Range
−40°C
to 105°C
−40°C
to 105°C
Guaranteed Specs
Temperature Range
25°C
−40°C
to 105°C
Screening
High temperature
High and low temperature
A
J
*1
Auto-discharge function quickly lowers the output voltage to 0 V 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
RP171N
NO. EC-245-150210
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
I
OUT
P
D
Tj
Tstg
*1
Item
Input Voltage
Input Voltage (CE Pin)
Output Voltage
Output Current
Power Dissipation (Standard Land Pattern)
*1
Junction Temperature
Storage Temperature Range
Rating
12
12
−0.3
to V
IN
+0.3
330
525
−40
to 150
−55
to 150
Unit
V
V
V
mA
mW
°C
°C
Refer to
PACKAGE INFORMATION
for detailed 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
Symbol
V
IN
Ta
Item
Input Voltage
Operating Temperature Range
RECOMMENDED OPERATING CONDITIONS
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 ratings by momentary electronic noise or surge. And
the semiconductor devices may receive serious damage when they continue to operate over the recommended
operating conditions.
Rating
2.6 to 10
−40
to 105
Unit
V
°C
4
RP171N
NO. EC-245-150210
ELECTRICAL CHARACTERISTICS
V
IN
= V
SET
+ 1.0 V, I
OUT
= 1 mA, unless otherwise noted.
The specifications surrounded by
RP171x (-AE)
Symbol
are guaranteed by design engineering at –40°C
≤
Ta
≤
105°C.
(Ta = 25°C)
Item
1.5 V <
V
SET
Conditions
Ta = 25°C
−40°C ≤
Ta
≤
105°C
Ta = 25°C
−40°C ≤
Ta
≤
105°C
Min.
V
SET
x 0.99
V
SET
x0.965
−15
−53
150
Typ.
Max.
V
SET
x 1.01
V
SET
x 1.03
15
45
Unit
V
V
OUT
Output Voltage
V
SET
≤
1.5
V
mV
mA
I
OUT
V
OUT
/I
OUT
V
DIF
I
SS
Istandby
V
OUT
/V
IN
I
SC
I
PD
V
CEH
V
CEL
T
TSD
T
TSR
R
LOW
Output Current
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Line Regulation
Short Current Limit
CE Pull-down Current
CE Input Voltage “H”
CE Input Voltage “L”
Thermal Shutdown
Temperature
Thermal Shutdown
Released Temperature
Auto-discharge
Nch Tr. ON Resistance
(RP171xxxxD)
Junction Temperature
Junction Temperature
V
CE
= 0 V, V
IN
= 7.0 V
0.1 mA
≤
I
OUT
≤
150 mA
I
OUT
=150 mA
I
OUT
= 0 mA
V
IN
= 10.0 V, V
CE
= GND
V
SET
+ 0.5 V
≤
V
IN
≤
10.0 V
Note: When V
OUT
≤
2.1 V,
2.6 V
≤
V
IN
≤
10.0 V
V
OUT
= 0 V
5
45
mV
Refer to the
Product-specific
Electrical Characteristics
23
0.1
±0.02
40
0.30
1.7
0.8
165
110
250
45
1.2
±0.25
µA
µA
%/V
mA
µA
V
V
°C
°C
Ω
All test items listed under
ELECTRICAL CHARACTERISTICS
are done under the pulse load condition (Tj
≈
Ta = 25°C).
5
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