R1140Q221D-TL [RICOH]
Fixed Positive LDO Regulator, 2.2V, 0.4V Dropout, CMOS, PDSO4, SC-82AB, 4 PIN;
| 型号： | R1140Q221D-TL |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Fixed Positive LDO Regulator, 2.2V, 0.4V Dropout, CMOS, PDSO4, SC-82AB, 4 PIN 光电二极管 输出元件 调节器 |
| 文件： | 总18页 (文件大小：177K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
S C82 120m A LDO REGULATOR
R1140Q S ERIES
AP P LICATION MANUAL
NO. EA-074-0103
SC82 120mA LDO REGULATOR
R1140Q SERIES
OUTLINE
The R1140Q Series are voltage regulator ICs with high output voltage accuracy, low supply current, low ON-
resistance, and high ripple rejection by CMOS process. Each of these voltage regulator ICs consists of a voltage refer-
ence unit, an error amplifier, resistors for setting Output Voltage, a current limit circuit, and a chip enable circuit.
These ICs perform with low dropout voltage and a chip enable function. The line transient response and load tran-
sient response of the R1140Q Series are excellent, thus these ICs are very suitable for the power supply for hand-held
communication equipment.
The output voltage of these ICs 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. 75µA
• Standby Mode ....................................................................... TYP. 0.1µA
• Low Dropout Voltage ........................................................... TYP. 0.15V (IOUT= 100mA Output Voltage= 3.0V Type)
• High Ripple Rejection .......................................................... TYP. 75dB (f= 1kHz)
• Low Temperature-Drift Coefficient of Output Voltage....... TYP. ± 100ppm/°C
• Excellent Line Regulation.................................................... TYP. 0.05%/V
• High Output Voltage Accuracy ............................................ ± 2.0%
• 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 (Current at short mode)
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.
• Power source for battery-powered equipment.
1
R1140Q
BLOCK DIAGRAM
R1140Q××1B
R1140Q××1D
4
1
4
1
V
DD
VOUT
V
DD
VOUT
Vref
Vref
Current Limit
Current Limit
CE
3
GND
2
CE
3
GND
2
SELECTION GUIDE
The output voltage, mask option, and the taping type for the ICs can be selected at the user’s request. The selec-
tion can be made by designating the part number as shown below;
R1140Q××1×-×× ←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
d
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 :
Ex. TR, TL (refer to Taping Specifications; TR type is the standard direction.)
2
R1140Q
PIN CONFIGURATION
SC-82AB
4
3
Mark side
1
2
PIN DESCRIPTION
Pin No.
Symbol
VOUT
Description
1
Output pin
Ground Pin
2
3
4
GND
CE
Chip Enable Pin
Input Pin
VDD
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
Rating
6.5
Unit
V
VIN
Input Voltage
VCE
Input Voltage (CE Pin)
Output Voltage
-0.3 VIN+ 0.3
-0.3 VIN+ 0.3
140
V
VOUT
IOUT
V
Output Current
mA
mW
°C
PD
Power Dissipation
150
Topt
Tstg
Operating Temperature Range
Storage Temperature Range
-40 85
-55 125
°C
3
R1140Q
ELECTRICAL CHARACTERISTICS
• R1140Q××1B/R1140Q××1D
Topt= 25°C
Symbol
VOUT
Item
Output Voltage
Output Current
Conditions
MIN.
TYP.
MAX.
Unit
VIN = Set VOUT+ 1V
VOUT
VOUT
V
1mA ≤ IOUT ≤ 30mA
×0.98
×1.02
IOUT
VIN -VOUT = 1.0V
120
mA
mV
VIN = Set VOUT+ 1V
∆VOUT/∆IOUT Load Regulation
12
40
1mA ≤ IOUT ≤ 120mA
Refer to the ELECTRICAL CHARACTERISTICS by OUTPUT VOLT-
AGE
VDIF
Dropout Voltage
ISS
Supply Current
VIN = Set VOUT+ 1V
75
150
1.0
µA
µA
Istandby
Supply Current (Standby)
VIN = VCE = Set VOUT+ 1V
0.1
Set VOUT+ 0.5V ≤ VIN ≤ 6V
IOUT = 30mA
∆VOUT/∆VIN Line Regulation
0.05
75
0.20
%/V
(In case that VOUT≤1.6V,
2.2V≤ VIN ≤ 6V)
f = 1kHz, Ripple 0.5Vp-p
VIN = Set VOUT+ 1V,
IOUT = 30mA
RR
Ripple Rejection
Input Voltage
dB
V
(In case that VOUT≤1.7V, VIN-
VOUT= 1.2V)
VIN
2.2
6.0
Output Voltage
IOUT = 30mA
ppm
/°C
∆VOUT/∆T
± 100
Temperature Coefficient
-40°C ≤ Topt ≤ 85°C
ILIM
RPU
VCEH
VCEL
en
Short Current Limit
VOUT = 0V
40
4
mA
MΩ
V
——
CE Pull-up Resistance
1.5
1.5
0.0
16
VIN
0.3
——
CE Input Voltage “H”
——
CE Input Voltage “L”
V
Output Noise
BW= 10Hz to 100kHz
VCE= 0V
30
70
µVrms
Low Output Nch Tr. ON
Resistance (of D version)
RLOW
Ω
4
R1140Q
• ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Topt = 25°C
Dropout Voltage
VDIF (V)
Output Voltage
VOUT (V)
Condition
TYP.
MAX.
0.70
0.50
0.45
0.40
0.30
1.5 ≤ VOUT ≤ 1.6
1.7 ≤ VOUT ≤ 1.8
1.9 ≤ VOUT ≤ 2.0
2.1 ≤ VOUT ≤ 2.7
2.8 ≤ VOUT ≤ 4.0
0.36
0.30
0.28
0.24
0.18
IOUT = 120mA
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 Se-
ries Resistance).
(Note: When the additional ceramic capacitors are connected to the Output Pin with Output capacitor for phase com-
pensation, 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 line sufficient. When the impedance of these is high, it would be a cause of picking up the noise
or unstable operation. Connect a capacitor with as much as 1.0µF capacitor between VDD and GND pin as close as pos-
sible.
Set external components, especially output capacitor as close as possible to the ICs and make wiring shortest.
5
R1140Q
TEST CIRCUITS
1 VOUT
V
DD
4
R1140Q
SERIES
V
C2
C1
I
OUT
V
OUT
2 GND
CE 3
C1=Tantal 1.0µF
C2=Tantal 2.2µF
Fig.1 Standard test Circuit
1 VOUT
VDD
4
R1140Q
SERIES
A
I
C2
SS
C1
2 GND
CE 3
C1=Tantal 1.0µF
C2=Tantal 2.2µF
Fig.2 Supply Current Test Circuit
1 VOUT
V
DD
4
R1140Q
SERIES
C2
Pulse
Generator
I
OUT
2 GND
CE 3
PG
Fig.3 Ripple Rejection, Line Transient Response Test Circuit
1 VOUT
V
DD
4
R1140Q
SERIES
C2
C1
2 GND
CE 3
I
OUT
a
I
OUT
b
C1=Tantal 1.0µF
C2=Tantal 2.2µF
Fig.4 Load Transient Response Test Circuit
6
R1140Q
TYPICAL APPLICATION
1 VOUT
VDD
4
OUT
IN
R1140Q
SERIES
C2
C1
2 GND
CE 3
(External Components)
Output Capacitor; Tantalum Type
7
R1140Q
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
R1140Q151×
R1140Q281×
1.6
3
2.5
2
3.5V
4.8V
1.4
3.3V
2.0V
VIN=1.8V
1.2
1
VIN=3.1V
0.8
0.6
0.4
1.5
1
2.5V
3.8V
0.5
0
0.2
0
0
0.05
0.1
0.15
0.2
0.25
0.3
0
0.05
0.1
0.15
0.2
0.25
0.3
Output Current IOUT (A)
Output Current IOUT (A)
R1140Q401×
4.5
4
6.0V
5.0V
4.5V
VIN=4.3V
3.5
3
2.5
2
1.5
1
0.5
0
0
0.05
0.1
0.15
0.2
0.25
0.3
Output Current IOUT (A)
2) Output Voltage vs. Input Voltage
R1140Q151×
R1140Q281×
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
1.6
1.5
1.4
1.3
1.2
1mA
30mA
50mA
1mA
30mA
50mA
1.1
1
2.1
2
1
2
3
4
5
6
1
2
3
4
5
6
Input Voltage VIN (V)
Input Voltage VIN (V)
8
R1140Q
R1140Q401×
4.2
4
3.8
3.6
3.4
1mA
30mA
50mA
3.2
3
1
2
3
4
5
6
Input Voltage VIN (V)
3) Dropout Voltage vs. Output Current
R1140Q151×
R1140Q281×
0.25
0.2
1.2
85°C
25°C
-40°C
85°C
25°C
-40°C
1
0.8
0.6
0.4
0.15
0.1
0.05
0
0.2
0
0
20
40
60
80
100
120
0
20
40
60
80
100
120
Output Current IOUT (mA)
Output Current IOUT (mA)
R1140Q401×
0.2
0.18
0.16
0.14
85°C
25°C
-40°C
0.12
0.1
0.08
0.06
0.04
0.02
0
0
20
40
60
80
100
120
Output Current IOUT (mA)
9
R1140Q
4) Output Voltage vs. Temperature
R1140Q151×
R1140Q281×
1.54
2.86
1.53
1.52
1.51
1.50
1.49
2.84
2.82
2.80
2.78
1.48
1.47
1.46
2.76
2.74
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt (°C)
Temperature Topt (°C)
R1140Q401×
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
Temperature Topt (°C)
5) Supply Current vs. Input Voltage
R1140Q151×
R1140Q281×
90
90
80
70
60
50
40
30
20
80
70
60
50
40
30
20
10
0
10
0
1
2
3
4
5
6
1
2
3
4
5
6
Input Voltage VIN (V)
Input Voltage VIN (V)
10
R1140Q
R1140Q401×
90
80
70
60
50
40
30
20
10
0
1
2
3
4
5
6
Input Voltage VIN (V)
6) Supply Current vs. Temperature
R1140Q151×
R1140Q281×
V
IN=2.5V
VIN=3.8V
200
160
120
80
200
160
120
80
40
0
40
0
-50
0
50
100
-50
0
50
100
Temperature Topt (°C)
Temperature Topt (°C)
R1140Q401×
V
IN=5.0V
200
160
120
80
40
0
-50
0
50
100
Temperature Topt (°C)
11
R1140Q
7) Dropout Voltage vs. Set Output Voltage
1
0.9
0.8
0.7
10mA
0.6
0.5
0.4
30mA
50mA
120mA
0.3
0.2
0.1
0
1.5
2.5
3.5
Set Output Voltage Vreg (V)
8) Ripple Rejection vs. Frequency
R1140Q151×
R1140Q151×
V
IN=2.5VDC+0.5Vp-p
V
IN=2.5VDC+0.5Vp-p
COUT=tantal 1.0µF, Topt=25°C
COUT=tantal 2.2µF, Topt=25°C
-90
-80
-70
-60
-50
-40
-30
-20
-90
-80
-70
-60
-50
-40
-30
-20
50mA
1mA
30mA
50mA
1mA
30mA
-10
0
-10
0
0.1
1.0
10.0
100.0
0.1
1.0
10.0
100.0
Frequency (kHz)
Frequency (kHz)
R1140Q281×
R1140Q281×
V
IN=3.8VDC+0.5Vp-p
V
IN=3.8VDC+0.5Vp-p
COUT=tantal 1.0µF, Topt=25°C
COUT=tantal 2.2µF, Topt=25°C
-90
-80
-70
-60
-50
-40
-30
-20
-90
-80
-70
-60
-50
-40
-30
-20
50mA
1mA
30mA
50mA
1mA
30mA
-10
0
-10
0
0.1
1.0
10.0
100.0
0.1
1.0
10.0
100.0
Frequency (kHz)
Frequency (kHz)
12
R1140Q
R1140Q401×
R1140Q401×
V
IN=5.0VDC+0.5Vp-p
V
IN=5.0VDC+0.5Vp-p
C
OUT=tantal 1.0µF, Topt=25°C
C
OUT=tantal 2.2µF, Topt=25°C
-90
-80
-70
-60
-50
-40
-30
-20
-90
-80
-70
-60
-50
-40
-30
-20
50mA
1mA
30mA
50mA
1mA
30mA
-10
0
-10
0
0.1
1.0
10.0
100.0
0.1
1.0
10.0
100.0
Frequency (kHz)
Frequency (kHz)
9) Ripple Rejection vs. Input Bias
R1140Q281×
R1140Q281×
I
OUT=30mA
I
OUT=1mA
100
90
80
70
60
50
40
30
20
80
70
60
50
1kHz
10kHz
100kHz
40
1kHz
10kHz
100kHz
30
20
10
0
10
0
2.9
2.9
3
3.1
Input Voltage VIN (V)
3.2
3.3
3
3.1
Input Voltage VIN (V)
3.2
3.3
R1140Q281×
I
OUT=50mA
90
80
70
60
50
40
30
20
1kHz
10kHz
100kHz
10
0
2.9
3
3.1
Input Voltage VIN (V)
3.2
3.3
13
R1140Q
10) Input Transient Response
R1140Q281×
V
C
IN=3.8V 4.8V, tr=tf=5µs
OUT=tantal 1.0µF, IOUT=30mA
6
5
4
V
V
IN
3
2
1
0
2.80
2.79
2.78
2.77
OUT
0
10
20
30
40
50
60
70
80
90
100
Time t (µs)
R1140Q281×
V
C
IN=3.8V 4.8V, tr=tf=5µs
OUT=tantal 2.2µF, IOUT=30mA
6
5
4
V
V
IN
3
2
1
0
2.80
2.79
2.78
2.77
OUT
0
10
20
30
40
50
60
70
80
90
100
Time t (µs)
14
R1140Q
R1140Q281×
V
C
IN=3.8V 4.8V, tr=tf=5µs
OUT=tantal 6.8µF, IOUT=30mA
6
5
4
V
V
IN
3
2
1
0
2.80
2.79
2.78
2.77
OUT
0
10
20
30
40
50
60
70
80
90
100
Time t (µs)
11) Load Transient Response
R1140Q281×
V
C
IN=3.8V, CIN=tantal 1.0µF
OUT=tantal 1.0µF
150
100
50
V
V
IN
0
2.85
2.80
2.75
2.70
OUT
-4
-2
0
2
4
6
8
10
12
14
16
Time t (µs)
15
R1140Q
R1140Q281×
V
C
IN=3.8V, CIN=tantal 1.0µF
OUT=tantal 2.2µF
150
100
50
V
V
IN
0
2.85
2.80
2.75
2.70
OUT
-4
-2
0
2
4
6
8
10
12
14
16
Time t (µs)
R1140Q281×
V
C
IN=3.8V, CIN=tantal 1.0µF
OUT=tantal 6.8µF
150
100
50
V
V
IN
0
2.85
2.80
2.75
2.70
OUT
-4
-2
0
2
4
6
8
10
12
14
16
Time t (µs)
16
R1140Q
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 conditions when
the white noise level is under 40µV (Avg.) are marked as the hatched area in the graph.
< Test conditions>
(1) VIN= 3.8V
(2) Frequency band: 10Hz to 2MHz
(3) Temperature: 25°C
R1140Q281×
R1140Q281×
VIN=3.8V, CIN=Ceramic2.2µF
COUT=Ceramic2.2µH
V
IN=3.8V, CIN=Ceramic1.0µF
COUT=Ceramic2.2µH
100
10
100
10
1
0.1
1
0.1
0.01
0.01
120
0
20
40
60
80
100
120
0
20
40
60
80
100
Load Current IOUT (mA)
Load Current IOUT (mA)
17
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