R1141Q221D-TL-FA [RICOH]
Fixed Positive LDO Regulator, 2.2V, 0.35V Dropout, CMOS, PDSO4, MINI, PLASTIC, SC-82-AB, 4 PIN;
| 型号： | R1141Q221D-TL-FA |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Fixed Positive LDO Regulator, 2.2V, 0.35V Dropout, CMOS, PDSO4, MINI, PLASTIC, SC-82-AB, 4 PIN 光电二极管 输出元件 调节器 |
| 文件： | 总15页 (文件大小：115K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R1141Q_E/2004/01/07
SC-82 120mA LDO REGULATOR
R1141Q SERIES
OUTLINE
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
• Ultra-Low Supply Current ................................... Typ. 90µA
• Standby Mode..................................................... Typ. 0.1µA
• Low Dropout Voltage........................................... Typ.0.15V (IOUT=100mA Output Voltage=3.0V Type)
• High Ripple Rejection .......................................... Typ. 75dB (VOUT≤2.4V), 70dB (VOUT≥2.5V) (f=1kHz)
• Low Temperature-Drift Coefficient of Output Voltage･･･Typ. ±100ppm/°C
• Excellent Line Regulation.................................... Typ. 0.02%/V
• High Output Voltage Accuracy............................. ±1.5% or ±30mV (VOUT≤2.0V)
• Excellent Dynamic Response
• Small Package .................................................... SC-82AB (Super Mini-mold)
• Output Voltage.................................................... Stepwise setting with a step of 0.1V in the range of
1.5V to 4.0V is possible
• 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, camcorders, and hand-held communica-
tion equipment.
• Power source for battery-powered equipment.
• Very stable Voltage Reference
1
R1141Q
BLOCK DIAGRAM
R1141Qxx1B
R1141Qxx1D
VDD
1
VOUT
VDD
1 VOUT
4
4
-
-
+
+
Vref
Vref
Current Limit
Current Limit
CE
3
CE
3
2
GND
2 GND
SELECTION GUIDE
The output voltage, mask option, and the taping type for the ICs can be selected at the user's request. The
selection can be made with designating the part number as shown below;
R1141Qxx1x-xx
↑ ↑ ↑ ↑
←Part Number
a b c d
Code
Contents
Designation of Package Type :
Q:SC82-AB (Super Mini-mold)
a
Setting Output Voltage (VOUT) :
b
c
Stepwise setting with a step of 0.1V in the range of 1.5V to 4.0V is possible.
Designation of Mask Option :
B: Without auto discharge function at OFF state.
D: With auto discharge function at OFF state.
Designation of Taping Type :
d
Ex. TR, TL (refer to Taping Specifications; TR type is the standard direction.)
2
R1141Q
PIN CONFIGURATION
SC-82AB
4
3
(mark side)
1
2
PIN DESCRIPTION
Pin No.
Symbol
VOUT
GND
CE
Description
1
2
3
4
Output pin
Ground Pin
Chip Enable Pin
Input Pin
VDD
ABSOLUTE MAXIMUM RATINGS
Symbol
VIN
Item
Rating
Unit
V
Input Voltage
6.5
-0.3 ~ VIN+0.3
-0.3 ~ VIN+0.3
140
VCE
Input Voltage (CE Pin)
Output Voltage
V
VOUT
IOUT
V
Output Current
mA
mW
°C
°C
PD
Power Dissipation
150
Topt
Tstg
Operating Temperature Range
Storage Temperature Range
-40 ~ 85
-55 ~ 125
3
R1141Q
ELECTRICAL CHARACTERISTICS
• R1141Qxx1B/R1141Qxx1D
Topt=25°C
Symbol
Item
Conditions
VIN = Set VOUT+1V
1mA ≤ IOUT ≤ 30mA
(Note 1)
Min.
VOUT
×0.985
(-30mV)
Typ.
Max.
VOUT
×1.015
(+30mV)
Unit
VOUT
V
Output Voltage
IOUT
∆VOUT/∆IOUT
VDIF
Output Current
Load Regulation
Dropout Voltage
Supply Current
VIN - VOUT = 1.0V
120
mA
mV
VIN = Set VOUT+1V
1mA ≤ IOUT ≤ 120mA
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT
VOLTAGE
12
40
ISS
VIN = Set VOUT+1V
90
160
1.0
µA
µA
Istandby
Supply Current
(Standby)
VIN = VCE = Set VOUT+1V
0.1
Set VOUT+0.5V ≤ VIN ≤ 6V
IOUT = 30mA
(In case that VOUT ≤
1.6V,
∆VOUT/∆VIN
Line Regulation
0.02
0.10
%/V
2.2V ≤ VIN ≤ 6V)
f = 1kHz, Ripple
0.5Vp-p
VIN = Set VOUT+1V,
IOUT = 30mA
75
(70)
(Note
2)
RR
Ripple Rejection
Input Voltage
dB
V
(In case that VOUT
≤1.7V,
VIN - VOUT =1.2V)
VIN
2.2
6.0
Output Voltage
Temperature Coeffi-
cient
IOUT = 30mA
-40°C ≤ Topt ≤ 85°C
ppm
/°C
∆VOUT/∆T
±100
Ilim
RPU
Short Current Limit
CE Pull-up Resistance
CE Input Voltage “H”
CE Input Voltage “L”
VOUT = 0V
40
mA
MΩ
V
0.7
1.5
0.0
2.0
8.0
VIN
VCEH
VCEL
0.3
V
en
Output Noise
BW=10Hz to 100kHz
VCE=0V
30
60
µVrms
Low Output Nch Tr. ON
Resistance (of D ver-
sion)
RLOW
Ω
Note 1: ±30mV Tolerance at VOUT ≤ 2.0V
Note 2: 70dB at VOUT ≥ 2.5V
4
R1141Q
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt = 25°C
Dropout Voltage
Output Voltage
VOUT (V)
VDIF (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 ≤ VOUT ≤ 2.0
2.1 ≤ VOUT ≤ 2.7
2.8 ≤ VOUT ≤ 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.
5
R1141Q
TEST CIRCUITS
1
V
DD
4
3
1
2
V
DD
4
3
V
OUT
V
OUT
R1141Q
SERIES
R1141Q
SERIES
A
C2
C2
I
SS
2
CE
CE
GND
GND
V
C1
C1
I
OUT
VOUT
C1=Ceramic 1.0µF
C2=Ceramic 2.2µF
C1=Ceramic 1.0µF
C2=Ceramic 2.2µF
Fig.1 Standard test Circuit
Fig.2 Supply Current Test Circuit
1
2
V
DD
4
3
V
OUT
1
2
V
DD
4
3
V
OUT
R1141Q
SERIES
R1141Q
SERIES
C2
Pulse
C2
CE
Generator
P.G.
GND
C1
CE
GND
I
OUT
I
OUTa
I
OUTb
C1=Ceramic 1.0µF
C2=Ceramic
C2=Ceramic
Fig.3 Ripple Rejection, Line Transient
Response Test Circuit
Fig.4 Load Transient Response Test Circuit
TYPICAL APPLICATION
OUT
1
2
V
DD
4
3
IN
V
OUT
R1141Q
SERIES
C2
CE
GND
C1
(External Components)
Output Capacitor; Ceramic Type C1=1µF C2=2.2µF
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
IN=4.3V
V
V
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
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)
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
25°C
-40°C
1.0
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
V
IN=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
90
80
70
60
50
40
30
20
10
0
100
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
90
80
70
60
50
40
30
20
10
0
100
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
VIN=2.5V
VIN=3.0V
120
110
100
90
120
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
VIN=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
OUT=Ceramic 2.2µF
V
IN=3.8V+0.5Vp-p, CIN=none
OUT=Ceramic 2.2µF
C
C
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
OUT=Ceramic 2.2µF
C
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,
OUT=Ceramic 2.2µF
C
OUT=Ceramic 2.2µF
C
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,
OUT=Ceramic 2.2µF
C
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, 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
-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, 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
-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 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
-10
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
14
14
16
18
18
18
20
22
24
Time t(µs)
26
28
30
32
34
R1141Q281x
V
IN=3.8V, IOUT=50mA→100mA,
CIN=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
16
20
22
24
Time t(µs)
26
28
30
32
34
R1141Q281x
V
IN=3.8V, IOUT=50mA→100mA,
CIN=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
16
20
22
24
Time t(µs)
26
28
30
32
34
14
R1141Q
TECHNICAL NOTES
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 condi-
tions 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=10H
Z to 2MHZ,
C
IN=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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