R1141Q251B-TR-FE [RICOH]
120mA LDO REGULATOR;
| 型号： | R1141Q251B-TR-FE |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | 120mA LDO REGULATOR 光电二极管 输出元件 调节器 |
| 文件： | 总16页 (文件大小：219K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R1141Q SERIES
120mA LDO REGULATOR
OUTLINE
NO.EA-082-111027
The R1141Q Series consist of CMOS-based voltage regulator ICs with high output voltage accuracy, low
supply current, low ON-resistance, and high ripple rejection. Each of these voltage regulator ICs consists of a
voltage reference unit, an error amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip
enable circuit.
Output Current Limit circuit is embedded in the R1141Q Series to prevent the break down of the IC caused by
excess current.
Chip enable circuit realizes standby mode and makes consumption current extremely small.
These ICs perform with low dropout voltage and a chip enable function. The line transient response and load
transient response of the R1141Q Series are excellent, making these ICs very suitable for the power supply for
hand-held communication equipment.
Their output voltage is internally fixed with high accuracy. Since the package for these ICs is SC-82AB (Super
Mini-mold) package, high density mounting of the ICs on boards is possible.
FEATURES
• Supply Current.............................................................Typ. 90μA
• Standby Mode..............................................................Typ. 0.1μA
• Dropout Voltage ...........................................................Typ. 0.15V (IOUT=100mA, Output Voltage=3.0V Type)
• Ripple Rejection...........................................................Typ. 75dB (VOUT 2.4V)
>
Typ. 70dB (VOUT 2.5V) (f=1kHz)
• Temperature-Drift Coefficient of Output Voltage..........Typ. ±100ppm/°C
• Line Regulation............................................................Typ. 0.02%/V
• Output Voltage Accuracy..............................................±1.5% or ±30mV (VOUT 2.0V)
=
• Excellent Dynamic Response
• Package .......................................................................SC-82AB (Super Mini-mold)
• Output Voltage Range..................................................1.5V to 4.0V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
• Built-in Chip Enable Circuit (B/D : active high)
• Built-in Fold-back Protection Circuit............................ Typ. 40mA (Short Current)
• Ceramic capacitor can be used for Output pin ........... Recommended value is 2.2µF or more.
APPLICATIONS
• Power source for cellular phones such as GSM, CDMA and various kinds of PCS.
• Power source for electrical appliances such as cameras, VCRs and camcorders,
and hand-held communication equipment.
• Power source for battery-powered equipment.
• Very stable Voltage Reference
1
R1141Q
BLOCK DIAGRAMS
R1141Qxx1B
R1141Qxx1D
4
4
1
1
VDD
VDD
VOUT
VOUT
Vref
Current Limit
Vref
Current Limit
CE
3
CE
3
2
2
GND
GND
SELECTION GUIDE
The output voltage, auto discharge function for the ICs can be selected at the user’s request.
Product Name
Package
Quantity per Reel
Pb Free
Halogen Free
SC-82AB
3,000 pcs
Yes
Yes
R1141Qxx1∗-TR-FE
xx: The output voltage can be designated in the range from 1.5V(15) to 4.0V(40) 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
2
R1141Q
PIN CONFIGURATION
z SC-82AB
4
3
(mark side)
1
2
PIN DESCRIPTION
Pin No
Symbol
Pin Description
1
2
3
4
VOUT
Output Pin
Ground Pin
GND
CE
Chip Enable Pin ("H" Active)
Input Pin
VDD
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
6.5
Unit
V
VIN
Input Voltage
VCE
Input Voltage (CE Pin)
Output Voltage
6.5
V
VOUT
IOUT
V
−0.3 to VIN +0.3
140
Output Current
mA
mW
°C
°C
Power Dissipation (SC-82AB)∗
Operating Temperature Range
Storage Temperature Range
PD
380
Topt
Tstg
−40 to 85
−55 to 125
∗) 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.
3
R1141Q
ELECTRICAL CHARACTERISTICS
• R1141Qxx1B/D
Topt=25°C
Symbol
VOUT
Item
Output Voltage
Conditions
Min.
Typ.
Max.
Unit
VIN = Set VOUT+1.0V
×0.985
(-30mV)
×1.015
(+30mV)
V
1mA
IOUT
30mA(*1)
=
IOUT
Output Current
VIN- VOUT=1.0V
120
mA
mV
VIN = Set VOUT+1.0V
Load Regulation
12
40
ΔVOUT/ΔIOUT
1mA
IOUT
120mA
=
Refer to the ELECTRICAL CHARACTERISTICS
by OUTPUT VOLTAGE
VDIF
Dropout Voltage
ISS
Supply Current
VIN = Set VOUT+1.0V
90
160
1.0
μA
μA
Istandby
Supply Current (Standby)
0.1
VIN=VCE= Set VOUT+1.0V
Set VOUT+0.5V VIN 6.0V
=
IOUT = 30mA
(In case that VOUT 1.6V,
Line Regulation
0.02
0.10
%/V
ΔVOUT/ΔVIN
=
2.2V VIN 6.0V)
=
f = 1kHz, Ripple 0.5Vp-p
VIN = Set VOUT+1V,
IOUT = 30mA
(In case that VOUT 1.7V,
VIN-VOUT=1.2V)
75
(70)
(*2)
RR
Ripple Rejection
Input Voltage
dB
V
VIN
2.2
6.0
ppm/
°C
Output Voltage Temperature
Coefficient
IOUT=30mA
ΔVOUT/ΔTopt
±100
−40°C Topt 85°C
=
=
ISC
RPU
VCEH
VCEL
en
Short Current Limit
CE Pull-up resistance
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
40
mA
MΩ
V
VOUT=0V
0.7
1.5
0.0
2.0
8.0
VIN
0.3
V
BW=10Hz to 100kHz
VCE=0V
30
60
µVrms
Low Output Nch Tr. ON
Resistance (of D version)
RLOW
Ω
*1: ±30mV Tolerance at VOUT 2.0V
=
>
*2: 70dB at VOUT 2.5V
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
R1141Q
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Output Voltage
Dropout Voltage VDIF (V)
VOUT (V)
Condition
Typ.
0.36
0.32
0.30
0.28
0.24
0.18
Max.
0.70
0.60
0.50
0.40
0.35
0.28
VOUT = 1.5
VOUT = 1.6
VOUT = 1.7
IOUT = 120mA
<
1.8
2.1
2.8
VOUT
VOUT
VOUT
2.0
2.7
4.0
=
=
=
<
<
TECHNICAL NOTES
When using these ICs, consider the following points:
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, be sure to use a 2.2µF or more capacitor COUT with good frequency characteristics and ESR
(Equivalent Series Resistance).
(Note: When the additional ceramic capacitors are connected to the Output Pin with Output capacitor for
phase compensation, the operation might be unstable. Because of this, test these ICs with as same external
components as ones to be used on the PCB.)
PCB Layout
Make VDD and GND lines sufficient. When their impedance is high, picking up the noise or unstable operation
may result. Connect a capacitor with as much as 1.0µF capacitor between VDD and GND pin as close as
possible.
Set external components, especially output capacitor as close as possible to the ICs and make wiring as short
as possible.
TYPICAL APPLICATION
1
2
4
3
OUT
V
OUT
V
DD
IN
R1141Q
SERIES
C2
C1
GND
CE
(External Components)
Output Capacitor; Ceramic Type C1=1.0μF C2=2.2μF
5
R1141Q
TEST CIRCUITS
1
2
4
3
V
OUT
V
DD
R1141Q
SERIES
V
C2
C1
IOUT
V
OUT
GND
CE
∗C1=Ceramic 1.0μF
C2=Ceramic 2.2μF
Fig.1 Standard test Circuit
1
2
4
3
V
OUT
V
DD
R1141Q
SERIES
A
C2
C1
ISS
GND
CE
∗C1=Ceramic 1.0μF
C2=Ceramic 2.2μF
Fig.2 Supply Current Test Circuit
1
2
4
3
V
OUT
V
DD
R1141Q
SERIES
Pulse
Generator
C2
IOUT
PG
GND
CE
C2=Ceramic
Fig.3 Ripple Rejection, Line Transient Response Test Circuit
1
2
4
3
V
OUT
V
DD
R1141Q
SERIES
C2
C1
GND
CE
IOUT
a
IOUT
b
∗C1=Ceramic1.0μF
C2=Ceramic
Fig.4 Load Transient Response Test Circuit
6
R1141Q
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
R1141Q151x
R1141Q201x
1.6
2.5
2.0
1.5
1.0
0.5
0.0
1.4
2.5V 3.0V
IN=2.3V
2.0V
V
IN=1.8V
3.5V
1.2
1.0
0.8
0.6
0.4
0.2
0.0
V
2.5V
4.0V
0
50
100 150
200 250 300
0
50
100 150
200 250 300
Output Current IOUT(mA)
Output Current IOUT(mA)
R1141Q281x
R1141Q401x
3.0
2.5
2.0
1.5
1.0
0.5
0.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
3.3V 3.8V
IN=3.1V
4.8V
4.5V 6.0V
V
V
IN=4.3V
5.0V
0
50
100 150
200 250 300
0
50
100 150
200 250 300
Output Current IOUT(mA)
Output Current IOUT(mA)
2) Output Voltage vs. Input Voltage
R1141Q151x
R1141Q201x
1.6
2.2
2.0
1.8
1.6
1.4
1.2
1.0
1.5
1.4
1.3
1.2
1.1
1.0
I
I
I
OUT=-1mA
OUT=-30mA
OUT=-50mA
I
I
I
OUT=-1mA
OUT=-30mA
OUT=-50mA
1
2
3
4
5
6
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
7
R1141Q
R1141Q281x
R1141Q401x
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
4.2
4.0
3.8
3.6
3.4
3.2
3.0
IOUT=-1mA
IOUT=-30mA
IOUT=-50mA
I
I
I
OUT=-1mA
OUT=-30mA
OUT=-50mA
1
2
3
4
5
6
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
3) Dropout Voltage vs. Output Current
R1141Q151x
R1141Q201x
0.4
0.3
0.2
0.1
0.0
1.2
85°C
25°C
-40°C
85°C
1.0
25°C
-40°C
0.8
0.6
0.4
0.2
0.0
0
20
40
60
80
100 120
0
20
40
60
80
100 120
Output Current IOUT(mA)
Output Current IOUT(mA)
R1141Q281x
R1141Q401x
0.25
0.20
0.15
0.10
0.05
0.00
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0.00
85°C
25°C
-40°C
85°C
25°C
-40°C
0
20
40
60
80
100 120
0
20
40
60
80
100 120
Output Current IOUT(mA)
Output Current IOUT(mA)
8
R1141Q
4) Output Voltage vs. Temperature
R1141Q151x
V
IN=2.5V, IOUT=30mA
1.54
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
2.04
2.02
2.00
1.98
1.96
1.94
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(°C
)
Temperature Topt(°C)
R1141Q281x
R1141Q401x
VIN=3.8V, IOUT=30mA
VIN=5.0V, IOUT=30mA
2.86
2.84
2.82
2.80
2.78
2.76
2.74
4.08
4.06
4.04
4.02
4.00
3.98
3.96
3.94
3.92
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(°C
)
Temperature Topt(°C)
5) Supply Current vs. Input Voltage (Topt=25°C)
R1141Q151x
R1141Q201x
100
100
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
9
R1141Q
R1141Q281x
R1141Q401x
100
100
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
6) Supply Current vs. Temperature
R1141Q151x
R1141Q201x
V
IN=2.5V
V
IN=3.0V
120
120
110
100
90
110
100
90
80
80
70
70
60
-50
60
-50
0
50
100
0
50
100
Temperature Topt(°C
)
Temperature Topt(°C)
R1141Q281x
R1141Q401x
V
IN=3.8V
VIN=5.0V
120
120
110
100
90
110
100
90
80
80
70
70
60
-50
60
-50
0
50
100
0
50
100
Temperature Topt(°C
)
Temperature Topt(°C
)
10
R1141Q
7) Dropout Voltage vs. Set Output Voltage
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
10mA
30mA
50mA
120mA
1.0
2.0
3.0
4.0
Set Output Voltage VREG(V)
8) Ripple Rejection vs. Frequency
R1141Q151x
R1141Q281x
V
IN=2.5V+0.5Vp-p, CIN=none
V
IN=3.8V+0.5Vp-p, CIN=none
COUT=Ceramic 2.2μF
COUT=Ceramic 2.2μF
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
0.1
1
10
100
Frequency f(kHz)
Frequency f(kHz)
R1141Q401x
V
IN=5.0V+0.5Vp-p, CIN=none
C
OUT=Ceramic 2.2μF
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
Frequency f(kHz)
11
R1141Q
9) Ripple Rejection vs. Input Bias
R1141Q281x
R1141Q281x
I
OUT=1mA, CIN=none,
I
OUT=30mA, CIN=none,
C
OUT=Ceramic 2.2µF
C
OUT=Ceramic 2.2µF
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
1kHz
1kHz
10kHz
10kHz
100kHz
100kHz
2.8
2.9
3
3.1
3.2
3.3
2.8
2.9
3
3.1
3.2
3.3
Input Voltage VIN(V)
Input Voltage VIN(V)
R1141Q281x
I
OUT=50mA, CIN=none,
C
OUT=Ceramic 2.2µF
100
90
80
70
60
50
40
30
20
10
0
1kHz
10kHz
100kHz
2.8
2.9
3
3.1
3.2
3.3
Input Voltage VIN(V)
12
R1141Q
10) Input Transient Response
R1141Q281x
V
IN=3.8V to 4.8V, IOUT=30mA, COUT=Ceramic 1.0μF, T =Tf=5.0μs
r
2.83
2.82
2.81
2.80
2.79
2.78
2.77
6
5
4
3
2
1
0
Input Voltage
Output Voltage
-20
-10
-10
-10
0
10
20
30
40
50
60
70
80
Time t(μs)
R1141Q281x
V
IN=3.8V to 4.8V, IOUT=30mA, COUT=Ceramic 2.2μF, T =Tf=5.0μs
r
2.83
2.82
2.81
2.80
2.79
2.78
2.77
6
5
4
3
2
1
0
Input Voltage
Output Voltage
-20
0
10
20
30
40
50
60
70
80
Time t(μs)
R1141Q281x
V
IN=3.8V to 4.8V, IOUT=30mA, COUT=Ceramic 4.7μF, Tr=Tf=5.0μs
2.83
2.82
2.81
2.80
2.79
2.78
2.77
6
5
4
3
2
1
0
Input Voltage
Output Voltage
-20
0
10
20
30
40
50
60
70
80
Time t(μs)
13
R1141Q
11) Load Transient Response
R1141Q281x
V
IN=3.8V, IOUT=50mA→100mA,
C
IN=Ceramic 1.0μF COUT=Ceramic 1.0μF, Tr=Tf=5.0μs
3.00
2.95
2.90
2.85
2.80
2.75
2.70
150
100
50
Output Current
Output Voltage
0
14
16
18
20
22
24
Time t(μs)
26
28
30
32
34
R1141Q281x
V
IN=3.8V, IOUT=50mA→100mA,
C
IN=Ceramic 1.0μF COUT=Ceramic 2.2μF, Tr=Tf=5.0μs
3.00
2.95
2.90
2.85
2.80
2.75
2.70
150
100
50
Output Current
Output Voltage
0
14
16
18
20
22
24
Time t(μs)
26
28
30
32
34
R1141Q281x
V
IN=3.8V, IOUT=50mA→100mA,
C
IN=Ceramic 1.0μF COUT=Ceramic 4.7μF, Tr=Tf=5.0μs
3.00
2.95
2.90
2.85
2.80
2.75
2.70
150
100
50
Output Current
Output Voltage
0
14
16
18
20
22
24
Time t(μs)
26
28
30
32
34
14
R1141Q
ESR vs. Output Current
When using these ICs, consider the following points:
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, be sure to use a capacitor COUT with good frequency characteristics and ESR (Equivalent Series
Resistance) of which is in the range described as follows:
The relations between IOUT (Output Current) and ESR of Output Capacitor are shown below. The conditions
when the white noise level is under 40µV (Avg.) are marked as the hatched area in the graph.
<Test conditions>
(1) VIN=VSET+1V
(2) Frequency band: 10Hz to 30MHz
(3) Temperature: 25°C
R1141Q151x
R1141Q281x
f=10H
Z to 2MHZ,
f=10HZ to 2MHZ,
CIN=Ceramic 1.0μF, COUT=Ceramic 2.2μF
C
IN=Ceramic 1.0μF, COUT=Ceramic 2.2μF
100
10
100
10
1
1
0.1
0.01
0.1
0.01
0
30
60
90
120
0
30
60
90
120
Output Current IOUT (mA)
Output Current IOUT (mA)
15
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discontinuation of production without notice for reasons such as improvement. Therefore, before
deciding to use the products, please refer to Ricoh sales representatives for the latest information
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incorporate safety measures in their design, such as redundancy feature, fire containment feature and
fail-safe feature. We do not assume any liability or responsibility for any loss or damage arising from
misuse or inappropriate use of the products.
7.Anti-radiation design is not implemented in the products described in this document.
8.Please contact Ricoh sales representatives should you have any questions or comments concerning
the products or the technical information.
Ricoh is committed to reducing the environmental loading materials in electrical devices
with a view to contributing to the protection of human health and the environment.
Ricoh has been providing RoHS compliant products since April 1, 2006 and Halogen-free products since
Halogen Free
April 1, 2012.
http://www.e-devices.ricoh.co.jp/en/
Sales & Support Offices
RICOH ELECTRONIC DEVICES CO., LTD.
Higashi-Shinagawa Office (International Sales)
3-32-3, Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-8655, Japan
Phone: +81-3-5479-2857 Fax: +81-3-5479-0502
RICOH EUROPE (NETHERLANDS) B.V.
Semiconductor Support Centre
Prof. W.H. Keesomlaan 1, 1183 DJ Amstelveen, The Netherlands
Phone: +31-20-5474-309
RICOH ELECTRONIC DEVICES KOREA CO., LTD.
3F, Haesung Bldg, 504, Teheran-ro, Gangnam-gu, Seoul, 135-725, Korea
Phone: +82-2-2135-5700 Fax: +82-2-2051-5713
RICOH ELECTRONIC DEVICES SHANGHAI CO., LTD.
Room 403, No.2 Building, No.690 Bibo Road, Pu Dong New District, Shanghai 201203,
People's Republic of China
Phone: +86-21-5027-3200 Fax: +86-21-5027-3299
RICOH ELECTRONIC DEVICES CO., LTD.
Taipei office
Room 109, 10F-1, No.51, Hengyang Rd., Taipei City, Taiwan (R.O.C.)
Phone: +886-2-2313-1621/1622 Fax: +886-2-2313-1623
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