R1171x SERIES
2.0A/1.5A LDO REGULATOR
NO. EA-125-111027
OUTLINE
The R1171x Series are CMOS-based positive voltage regulator ICs. The R1171x Series have features of low
dropout voltage, high output voltage accuracy, low consumption current. Each of these ICs consists of a voltage
reference unit, an error amplifier, resistor net for setting output voltage, a current limit circuit at short mode, a
chip enable circuit, and thermal shutdown circuit. The output voltage of R1171 is fixed in the IC.
Low consumption current by the merit of CMOS process and built-in transistors with low ON-resistance make
low dropout voltage and chip enable function prolongs the battery life. These regulators are remarkable
improvement on the current regulators in terms of input transient response, and load transient response.
Thus, the R1171x Series are suitable for various power sources.
Since the packages for these ICs are high wattage HSOP-6J package, TO-252-5-P1, high density mounting of
the ICs on boards is possible.
FEATURES
•
Supply Current ............................................................. Typ. 130μA
•
Standby Current ........................................................... Typ. 0.1μA
•
Output Current ............................................................. Min. 1.5A (V
IN
=V
OUT
+1.0V,
R1171Sxx1A/B)
Min. 2.0A (V
IN
=V
OUT
+1.0V,
R1171Jxx1C/D)
•
Input Voltage ................................................................ 2.1V to 6.0V
•
Output Voltage ............................................................. 1.5V to 5.0V (0.1V steps) (R1171Sxx1A/B)
1.8V to 5.0V (0.1V steps) (R1171Jxx1C/D)
(
For other voltages, please refer to MARK INFORMATIONS.)
•
Output Voltage Accuracy..............................................
±
2.0%
•
Dropout Voltage ........................................................... Typ. 0.09V (V
OUT
=3.0V,
I
OUT
=300mA)
•
Temperature-drift Coefficient of Output Voltage........... Typ.
±
100ppm/°C
•
Line Regulation ............................................................ Typ. 0.05%/V
•
Packages ..................................................................... HSOP-6J, TO-252-5-P1
•
Built-in Current Limit Circuit
•
Built-in Thermal Shutdown Circuit
•
Ceramic capacitor for phase compensation ................ C
IN
=C
OUT
=Ceramic
10μF (V
OUT
<1.8V)
C
IN
=C
OUT
=Ceramic
4.7μF (V
OUT
>
1.8V)
=
APPLICATIONS
•
•
•
•
Local Power source for Notebook PC.
Local Power source for portable appliances, cameras, and videos.
Local Power source for equipment of battery-use.
Local Power source for home appliances.
1
R1171x
BLOCK DIAGRAMS
R1171xxx1A/C
R1171xxx1B/D
V
DD
V
OUT
V
DD
V
OUT
Vref
Current Limit
Thermal Shutdown
GND
Vref
Current Limit
Thermal Shutdown
GND
CE
GND
CE
GND
SELECTION GUIDE
The output voltage, chip enable polarity, package for the ICs can be selected at the user’s request.
Product Name
R1171Sxx1∗-E2-FE
R1171Jyy1$-T1-F
Package
HSOP-6J
TO-252-5-P1
Quantity per Reel
1,000 pcs
3,000 pcs
Pb Free
Yes
Yes
Halogen Free
Yes
No
xx : The output voltage can be designated in the range from 1.5V(15) to 5.0V(50) in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
yy : The output voltage can be designated in the range from 1.8V(18) to 5.0V(50) in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
∗
: CE pin polarity are options as follows.
(A) "L" active
(B) "H" active
$ : CE pin polarity are options as follows.
(C) "L" active
(D) "H" active
2
R1171x
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
CE
V
OUT
P
D
Topt
Tstg
Input Voltage
Input Voltage (
CE
or CE Input Pin)
Output Voltage
Power Dissipation (HSOP-6J)
∗
1
Power Dissipation (TO-252-5-P1)
∗
1
Operating Temperature
Storage Temperature
Item
Rating
7.0
−0.3
to V
IN
+0.3
−0.3
to V
IN
+0.3
1700
1900
−40
to 85
−55
to 125
°C
°C
Unit
V
V
V
mW
∗)
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
R1171x
ELECTRICAL CHARACTERISTICS
•
R1171Sxx1A
Symbol
V
OUT
ΔV
OUT
/
ΔI
OUT
Item
Output Voltage
Load Regulation
Conditions
V
IN
−V
OUT
=1.0V,
I
OUT
=200mA
V
IN
−V
OUT
=1.0V
1mA
<
I
OUT
<
300mA
=
=
1.5
1.6
V
DIF
Dropout Voltage
I
OUT
=300mA
1.7
1.8
2.0
2.5
I
SS
I
standby
ΔV
OUT
/ΔV
IN
RR
V
IN
ΔV
OUT
/
ΔT
opt
I
LIM
I
SC
R
PU
V
CEH
V
CEL
T
TSD
T
TSR
Supply Current
Standby Current
Line Regulation
Ripple Rejection
Input Voltage
Output Voltage
Temperature Coefficient
Output Current
Short Current Limit
Pull-up resistance for
CE
pin
CE
Input Voltage "H"
CE
Input Voltage "L"
Thermal Shutdown
Junction Temperature
Detector Threshold Temperature
Thermal Shutdown
Junction Temperature
Released Temperature
<
=
<
=
<
=
<
=
<
=
<
=
Topt=25°C
Min.
×0.98
Typ.
Max.
×1.02
Unit
V
mV
10
0.16
0.14
0.13
0.12
0.10
0.09
130
0.1
60
0.35
0.32
0.28
0.24
0.21
0.18
320
2.0
V
OUT
<1.6
V
OUT
<1.7
V
OUT
<1.8
V
OUT
<2.0
V
OUT
<2.5
V
OUT
<
=
V
5.0
V
IN
−V
OUT
=1.0V,
V
CE
=0V
V
IN
−V
OUT
=1.0V,
V
IN
=V
CE
I
OUT
=200mA
f=1kHz, Ripple 0.5Vp-p
I
OUT
=10mA
−40°C
<
T
opt
=
V
OUT
=0V
2.5
1.2
0
μA
μA
Refer to the following table
2.1
6.0
±100
1.5
200
5.0
10.0
V
IN
0.25
150
120
V
ppm/°C
A
mA
MΩ
V
V
°C
°C
Topt=25°C
<
=
85°C
V
IN
−V
OUT
=1.0V
•
Line Regulation by Output Voltage
Output Voltage
V
OUT
(V)
1.5
1.6
<
=
<
=
Line Regulation
ΔV
OUT
/ΔV
IN
(%/V)
Condition
I
OUT
=200mA,
2.1V
<
=
Typ.
<
=
<
=
Max.
0.30
V
OUT
< 1.6
V
OUT
<
=
V
IN
6.0V
V
IN
<
=
5.0
I
OUT
=200mA,
V
OUT
+0.5V
0.05
6.0V
•
Ripple Rejection by Output Voltage
Output Voltage
V
OUT
(V)
1.5
4.7
<
=
<
=
Topt=25°C
Ripple Rejection RR (dB)
Condition
f=1kHz, Ripple 0.5Vp-p, V
IN
−V
OUT
=1.0V
f=1kHz, Ripple 0.5Vp-p, V
IN
=5.75V
Typ.
50
V
OUT
< 4.7
V
OUT
<
=
5.0
5
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
