R1151N3.2B-TR [ETC]
Analog IC ; 模拟IC\n'2002.1.25
Boost type Voltage Regulator with Reset
R1151N SERIES
■ OUTLINE
The R1151N Series are CMOS-based boost type voltage regulator ICs with high output voltage accuracy, low supply current,
and high ripple rejection. Each of these voltage regulator controllers consists of a voltage reference unit, an error amplifier,
comparators, resistors for output and reset voltage setting, a current limit protection circuit, and a chip enable circuit.
In addition to low consumption current by CMOS process, the chip enable function prolongs the battery life. Dynamic
response and ripple rejection of the R1151N Series are excellent, further these are low noise type, plus maximum operating
input voltage tolerance is up to 18.5V, thus these ICs are very suitable for the power supply for hand-held equipment and other
power management applications using AC adapter input voltage.
The output voltage of these ICs is internally fixed with high accuracy. Since the package for these ICs are SOT-23-6 (Mini-
mold) package, high density mounting of the ICs on boards is possible.
■ FEATURES
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Ultra-Low Supply Current......................................... TYP. 70µA (IOUT=0mA)
Standby Mode ........................................................... TYP. 0.1µA
Low Dropout Voltage ................................................ TYP. 0.1V(IOUT=100mA *Depends on External Transistor)
High Ripple Rejection............................................... TYP. 60dB(f=1kHz)
Low Temperature-Drift Coefficient of Output Voltage TYP. ±100ppm/°C
High Output Voltage Accuracy.................................. ±2.0%
Excellent Dynamic Response
Small Package ..........................................................SOT-23-5(Mini-mold)
Output Voltage...........................................................Stepwise setting with a step of 0.1V in the range of 2.5V to 9.0V
Built-in chip enable circuit ( 2 types; A: active low , B: active high)
Output Capacitor .......................................................Tantalum type recommendation (or Ceramic + Series Resistor)
Built-in output voltage detector.................................with delay (C version)
Detector Threshold Tolerance ................................... ±2.5%
Detector Threshold Voltage ...................................... Stepwise setting with a step of 0.1V in the range of 1.7V to 8.0V
Operating Input Voltage ............................................Max. 18.5V
■ APPLICATIONS
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Power source for handheld equipment such as cameras and videos.
Power source for home appliances.
Power source for battery-powered equipment.
Rev. 1.11
- 1 -
■ BLOCK DIAGRAMS
R1151NXXXB
EXT
CE
4
1
VDD
6
3
VOUT
-
+
+
-
VDET
2
Vref
Vref
GND
Current Limit
5
R1151NXXXC
EXT
CD
4
1
VDD
6
3
VOUT
-
+
+
-
VDET
2
Vref
Vref
GND
Current Limit
5
Rev. 1.11
- 2 -
■ SELECTION GUIDE
The output voltage, mask option code, 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;
R1151NXXXX-XX
←Part Number
↑
↑
↑
a
b
c
Code
Contents
a
Code Number for Voltage Setting
Setting mask option :
A: with CE (active at “L” type)
B: with CE (active at “H” type)
b
c
C: with the pin for external capacitor to set the output delay of voltage detector
Designation of Taping Type :
Ex. TR (Refer to Taping Specifications.)
■ PIN CONFIGURATION
SOT-23-6
6
5
4
VDD
GND
CE/CD
(MARK SIDE)
VDET
EXT
VOUT
1
2
3
■ PIN DESCRIPTIONS
Pin No.
Symbol
Description
1
EXT
External Transistor Drive Pin
Voltage Detector Output Pin
Voltage Regulator Output pin
Chip Enable Pin(A/B version)
2
3
4
4
5
6
VDET
VOUT
or CE
CE
CD
Pin for External capacitor to set Output Delay of Voltage Detector(C version)
GND
VDD
Ground Pin
Input Pin
Rev. 1.11
- 3 -
■ ABSOLUTE MAXIMUM RATINGS
Item
Symbol
VIN
Rating
20
Unit
V
Input Voltage
Input Voltage(
/CE/CD Pin)
VCE/CD
VOUT
VEXT
VDET
IEXT
PD
-0.3 ~ VIN+0.3
-0.3 ~ VIN+0.3
-0.3 ~ VIN+0.3
-0.3 ~ VIN+0.3
30
V
CE
Output Voltage(VOUT Pin)
Output Voltage(EXT Pin)
Output Voltage(VDET Pin)
EXT Output Current
V
V
V
mA
mW
°C
°C
Power Dissipation
150
Operating Temperature Range
Storage Temperature Range
Topt
Tstg
-40 ~ 85
-55 ~ 125
■ ELECTRICAL CHARACTERISTICS
■
R1151NXXXA/B
Symbol
Topt=25°C
Item
Conditions
MIN.
TYP.
1Note
MAX.
VOUT
Unit
VIN = Set VOUT+1V
VOUT
VOUT
IOUT
Output Voltage
Output Current
V
A
IOUT = 50mA
×0.98
×1.02
VIN - VOUT = 1.0V
VIN = Set VOUT+1V
1mA ≤ IOUT ≤ 100mA
IOUT = 100mA
∆VOUT/∆IOUT Load Regulation
Refer to the Load Regulation Table
VDIF
ISS
Istandby
IEXTleak
Dropout Voltage
0.1Note
70
15
0.2
100
V
Supply Current
VIN = Set VOUT+1V, IOUT = 0mA
VIN = 18.5V
µA
µA
µA
Supply Current (Standby)
EXT Leakage Current
0.5
Set VOUT+0.5V ≤ VIN ≤ 18.5V
IOUT = 50mA
f = 1kHz, Ripple 0.5Vp-p
VIN = Set VOUT+1V
∆VOUT/∆VIN
Line Regulation
0
8
0.02
60
0.10
%/V
RR
VIN
Ripple Rejection
dB
Input Voltage
18.5
27
V
ppm
/°C
Output Voltage
IOUT = 10mA
∆VOUT/∆T
±100
Temperature Coefficient
-40°C ≤ Topt ≤ 85°C
Base Current IB of PNP Tr.
VIN - VOUT = 1.0V
Base Current IB of PNP Tr.
VOUT = 0V
Ilim
IRPT
RUD
Current Limit
mA
mA
MΩ
Short Current Limit
0.7
2
Pull-up/down
CE
/CE
Resistance
Input Voltage “H”
CE
CE
VCEH
VCEL
1.5
0
-VDET
×0.975
-VDET
×0.03
VIN
V
V
/CE
/CE
Input Voltage “L”
0.25
-VDET
×1.025
-VDET
×0.07
-VDET
VHYS
V
V
Detector Threshold
Detector Threshold
Hysteresis Range
-VDET
×0.05
IOUT2
∆VDET/∆T
tPLH
VDD = 1.5V, VDS = 0.5V
2.0
5.0
10.0
mA
ppm
/°C
Output Current 2
Detector Threshold
Temperature Coefficient
Output Delay Time
-40°C ≤ Topt ≤ 85°C
±100
0.1
1.1
ms
Minimum Operating
Voltage
VDDL
0.9
V
Note: This item depends on the capability of external PNP transistor. Use low saturation type transistor with hFE value range of
100 to 300.
Rev. 1.11
- 4 -
■
R1151NXXXC
Symbol
Topt=25°C
Item
Conditions
VIN = Set VOUT+1V
IOUT = 50mA
MIN.
VOUT
×0.98
TYP.
MAX.
VOUT
×1.02
Unit
VOUT
IOUT
Output Voltage
Output Current
Load Regulation
V
A
VIN - VOUT = 1.0V
1*Note1
VIN = Set VOUT+1V
1mA ≤ IOUT ≤ 100mA
IOUT = 100mA
Refer to the Load Regulation Table
∆VOUT/∆IOUT
VDIF
ISS
Dropout Voltage
Supply Current
0.1*Note1
70
V
VIN = Set VOUT+1V, IOUT = 0mA
100
0.5
µA
µA
IEXTleak
EXT Leakage Current
Set VOUT+0.5V ≤ VIN ≤ 18.5V
IOUT = 50mA
f = 1kHz, Ripple 0.5Vp-p
VIN = Set VOUT+1V
Line Regulation
0.00
0.02
60
0.10
18.5
27
%/V
∆VOUT/∆VIN
RR
VIN
Ripple Rejection
dB
Input Voltage
Output Voltage
Temperature Coefficient
V
ppm
/°C
IOUT = 10mA
±100
0.7
∆VOUT/∆T
-40°C ≤ Top t ≤ 85°C
Base Current IB of PNP Tr.
VIN - VOUT = 1.0V
Base Current IB of PNP Tr.
VOUT = 0V
Ilim
Current Limit
8
mA
IRPT
-VDET
VHYS
Short Current Limit
Detector Threshold
mA
V
-VDET
×0.975
-VDET
×0.03
-VDET
×1.025
-VDET
×0.07
Detector Threshold
Hysteresis Range
-VDET
×0.05
V
IOUT2
∆VDET/∆T
tPLH
VDD = 1.5V, VDS = 0.5V
-40°C ≤ Topt ≤ 85°C
CD=220pF*Note2
2.0
5.0
±100
1.6
10.0
mA
ppm
/°C
Output Current 2
Detector Threshold
Temperature Coefficient
Output Delay Time
0.9
2.7
1.1
ms
Minimum Operating
Voltage
VDDL
0.9
V
Note1: This item depends on the capability of external PNP transistor. Use low saturation type transistor with hFE value range of
100 to 300.
Note2: VDET pin is pulled-up to VDD via 470kΩ resistance. The time is between the rising edge of VOUT level from 0.9V to
(+VDET)+2.0V and the reaching point to ((+VDET)+2.0V)/2 of the VDET output voltage.
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Load Regulation Table
OUT
OUT (mV)
Load Regulation ∆V /∆I
TYP.
20
30
40
Output Voltage VOUT(V)
MAX.
60
90
130
160
2.5 to 3.3
3.4 to 5.0
5.1 to 7.0
7.1 to 9.0
50
■ OPERATION
In these ICs, fluctuation of Output Voltage, VOUT is detected by the feed-back registers, and the result is compared with a
reference voltage with the error amplifier and control the base current of an external PNP transistor so that a constant voltage
is output. The base current is monitored with the base current limit circuit. If the base current may be too large, the protection
circuit works, further, output voltage is monitored with the built-in voltage detector. If the set detector threshold voltage is
detected, reset signal will be output.
Rev. 1.11
- 5 -
■ 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 as much as 10µF capacitor as CL with good frequency characteristics and ESR (Equivalent Series Resistance).
The best suitable equivalent series resistor value (ESR) is approximately 1Ω.
If the ESR of the output capacitor is too large, output may be unstable, therefore fully evaluation is necessary.
Make VDD and GND line sufficient. When their impedance of these is high, noise pickup or unstable operation may be the
result. Connect a capacitor with a capacitance value of as much as 10µF between VDD and GND as close as possible to these
pins.
Set external components, especially output capacitor, as close as possible to the ICs.
Refer to the next equation to calculate the output delay time of C version and decide the capacitance value for the delay time.
tPLH =2.31×C/(300×10-9 )
C: Capacitance value (F)
Recommended pull-up resistance (R1) value is 470kΩ. If the value is too small, released voltage may be shift, therefore, use
10kΩ or more value resistor.
■ TEST CIRCUITS
PNP
PNP
1
1
IOUT
IOUT
VIN
VIN
3
3
6
2
6
2
R1151NxxC
R1151NxxC
R1
VDET
4
4
5
5
C1
C2
C1
C2
Fig.1 Standard test Circuit
R1=470kΩ C1=220pF, C2=10µF
Fig.2 Supply Current Test Circuit
C1=220pF, C2=10µF
PNP
1
PNP
1
IOUT
IOUT
VIN
VIN
3
3
6
2
6
2
R1151NxxC
R1151NxxC
P.G.
4
P.G.
4
5
5
C1
C2
C1
C2
Fig.3 Ripple Rejection, Line Transient Response Test
Fig.4 Load Transient Response Test Circuit
Circuit C1=220pF, C2=10µF
C1=220pF, C2=10µF
Rev. 1.11
- 6 -
■ TYPICAL APPLICATION
OUT
PNP Tr
IN
+
+
CI
CL
VOUT
EXT
VDD
CD
R1151NxxxC
GND
R1
+
CD
RESET
VDET
(External Components)
C1 10µF R1=470kΩ PNP Tr.: 2SA1441, 2SB940, 2SB703
CL 10µF
■ TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current (Topt=25°C)
a. External Tr.: 2SA1441
R1151N (VR=9.0V)
10.00
R1151N (VR=5.0V)
6.00
5.50
5.00
4.50
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
9.00
8.00
VIN=10V
7.00
VIN=11V
IN
V =7V
6.00
IN
V =6V
VIN=9.5V
IN
V =5.5V
5.00
IN
V =9.3V
IN
V =5.3V
4.00
3.00
2.00
1.00
0.00
0
500 1000 1500 2000 2500 3000 3500 4000
Output Current IOUT(mA)
0
500 1000 1500 2000 2500 3000 3500 4000
OUT
Output Current I
(mA)
Rev. 1.11
- 7 -
R1151N (VR=3.3V)
R1151N (VR=2.5V)
3.00
2.50
2.00
1.50
1.00
0.50
0.00
3.50
3.25
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
VIN=5.3V
VIN=4.3V
VIN=3.8V
VDD=4.5V
VDD=3.5V
VDD=3.0V
VIN=3.6V
VDD=2.8V
0
500 1000 1500 2000 2500 3000 3500 4000
Output Current IOUT(mA)
0
500 1000 1500 2000 2500 3000 3500 4000
Output Current IOUT(mA)
b. External Tr.:2SB940
R1151N (VR=9.0V)
R1151N (VR=5.0V)
6.00
5.00
4.00
3.00
2.00
1.00
0.00
10.00
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
VDD=11.0V
VDD=10.0V
VDD=9.5V
VDD=7.0V
VDD=6.0V
V
DD
=5.3V
VDD=9.3V
VDD=5.5V
0
100 200 300 400 500 600 700 800 900 100 110
0
100 200 300 400 500 600 700 800 900 100 110
0
0
Output Current IOUT(mA)
0
0
Output Current IOUT(mA)
R1151N (VR=3.3V)
R1151N (VR=2.5V)
3.00
2.50
2.00
1.50
1.00
0.50
0.00
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
VDD=5.3V
VDD=4.5V
VDD=4.3V
VDD=3.5V
VDD=3.8V
VDD=3.0V
VDD=2.8V
VDD=3.6V
0
100 200 300 400 500 600 700 800 900 100 110
0
100 200 300 400 500 600 700 800 900 100 110
0
0
0
0
Output Current IOUT(mA)
Output Current IOUT(mA)
Rev. 1.11
- 8 -
c. External Tr.:2SB703
R1151N (VR=9.0V)
R1151N (VR=5.0V)
VIN=7.0V
6.00
5.00
4.00
3.00
2.00
1.00
0.00
10.00
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
VIN=11.0V
VIN=6.0V
VIN=5.5V
VIN=5.3V
VIN=10.0V
VIN=9.5V
VIN=9.3V
0
100 200 300 400 500 600 700 800 900 100 110
0
100 200 300 400 500 600 700 800 900 100 110
0
0
0
0
Output Current IOUT(mA)
Output Current IOUT(mA)
R1151N (VR=3.3V)
R1151N (VR=2.5V)
3.00
2.50
2.00
1.50
1.00
0.50
0.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
V
IN=5.3V
VIN=4.3V
VIN=3.8V
VIN=4.5V
VIN=3.5V
VIN=3.0V
VIN=3.6V
VIN=2.8V
0
100 200 300 400 500 600 700 800 900 100 110
0
100 200 300 400 500 600 700 800 900 100 110
0
0
Output Current IOUT(mA)
Output Current IOUT(mA)
0
0
d. Output Voltage vs. Base Current (Topt=25°C)
VR=9.0V
VR=5.0V
10.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0
2
4
6
8
10
12
14
16
18
0
2
4
6
8
10
12
14
16
18
Base Current IEXT(mA)
Base Current IEXT(mA)
Rev. 1.11
- 9 -
VR=2.5v
VR=3.3v
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
0
2
4
6
8
10
12
14
16
18
0
2
4
6
8
10
12
14
16
Base Current IEXT(mA)
Base Current IEXT(mA)
2) Output Voltage vs. Input Voltage (Topt=25°C)
External Transistor: 2SA1441
R1151N (VR=5.0V)
6.00
R1151N (VR=3.3V)
4.00
3.50
3.00
2.50
2.00
1.50
1.00
IOUT=0mA
5.00
IOUT=0mA
4.00
3.00
IOUT=500mA
2.00
IOUT=500mA
1.00
0
1 2
3
4 5
6
7 8 9 10 11 12 13 14 15 16 17 18
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18
Input Voltage VIN(V)
Input Voltage VIN(V)
R1151N (VR=2.5V)
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
IOUT=0mA
IOUT=500mA
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18
Input Voltage VIN(V)
Rev. 1.11
- 10 -
3) Output Voltage vs. Temperature
VIN=6.0V
VIN=4.3V
R1151N (VR=3.3V)
R1151N (VR=5.0V)
IOUT=80mA
IOUT=80mA
3.375
3.355
3.335
3.315
3.295
3.275
3.255
3.235
3.215
5.125
5.075
5.025
4.975
4.925
4.875
-40
-15
10
35
60
85
-40
-15
10
35
60
85
(°C)
(°C)
Temperature Topt
Temperature Topt
R1151N (VR=2.5V)
VIN=3.5V
IOUT=80mA
2.538
2.513
2.488
2.463
2.438
-40
-15
10
35
60
85
(°C)
Temperature Topt
4) Supply Current vs. Input Voltage
External Tr.:2SA1441
R1151N (VR=5.0V,-VD=4.2V)
IOUT=0mA
R1151N (VR=9.0V,-VD=8.0V)
IOUT=0mA
150
150
140
130
120
110
100
90
140
130
120
110
100
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
0
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18
Input Voltage VIN(V)
Input Voltage VIN(V)
Rev. 1.11
- 11 -
R1151N (VR=3.3V,-VD=2.9V)
IOUT=0mA
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18
Input Voltage VIN(V)
5) Supply Current vs. Temperature
a. External Tr.:2SA1441
R1151N (VR=9.0V)
R1151N (VR=5.0V)
VIN=6V
IOUT=0mA
VIN=10V
IOUT=0mA
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
-40
-15
10
35
60
85
-40
-15
10
35
60
85
(°C)
(°C)
Temperature Topt
Temperature Topt
R1151N (VR=3.3V)
R1151N (VR=2.5V)
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
-40
-15
10
35
60
85
-40
-15
10
35
60
85
(°C)
Temperature Topt
Temperature Topt
(°C)
Rev. 1.11
- 12 -
b. External Tr.:2SB703
R1151N (VR=9.0V)
R1151N (VR=5.0V)
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
-40
-15
10
35
60
85
-40
-15
10
35
60
85
(°C)
Temperature Topt
Temperature Topt
(°C)
R1151N (VR=3.3V)
R1151N (VR=2.5V)
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
-40
-15
10
35
60
85
-40
-15
10
35
60
85
(°C)
(°C)
Temperature Topt
Temperature Topt
6) Ripple Rejection vs. Ripple Frequency (Topt=25°C)
R1151N (VR=9.0V)
R1151N (VR=5.0V)
VIN=10Vdc+0.5Vp-p,Iout=50mA,CL=10uF
80
VIN=6Vdc+0.5Vp-p,Iout=50mA,CL=10uF
80
70
60
50
40
30
20
10
0
70
60
2SB703
2SA1441
2SB940
2SB703
50
2SA1441
40
30
20
10
0
2SB940
0.01
0.1
1
10
100
0.01
0.1
1
10
100
Ripple Frequency (kHz)
Ripple Frequency (kHz)
Rev. 1.11
- 13 -
R1151N (VR=3.3V)
R1151N (VR=2.5V)
VIN=4.3Vdc+0.5Vp-p,Iout=50mA,CL=10uF
VIN=3.5Vdc+0.5Vp-p,Iout=50mA,CL=10uF
80
70
60
50
40
30
20
10
0
70
60
50
40
30
20
10
0
2SB703
2SB703
2SA1441
2SA1441
2SB940
2SB940
0.01
0.1
1
10
100
0.01
0.1
1
10
100
Ripple Frequency(kHz)
Ripple Frequency (kHz)
7)Ripple Rejection vs. Temperature
R1151N (VR=3.3V)
R1151N (VR=5.0V)
VIN=4.3Vdc+0.5Vp-p,Iout=50mA,CL=10uF
VIN=6Vdc+0.5Vp-p,Iout=50mA,CL=10uF
75
75
73
71
69
67
65
63
61
59
57
55
2SA1441
73
71
69
67
65
63
61
59
57
55
2SB940
2SB703
2SB703
2SA1441
2SB940
-40
-15
10
35
60
85
-40
-15
10
35
60
85
(°C)
(°C)
Temperature Topt
Temperature Topt
R1151N (VR=2.5V)
VIN=3.5Vdc+0.5Vp-p,Iout=50mA,CL=10uF
70
2SB940
2SB703
65
60
55
50
45
2SA1441
-40
-15
10
35
60
85
Temperature Topt
(°C)
Rev. 1.11
- 14 -
8)Input Transient Response(Topt=25°C)
a. External Tr.:2SA1441
R1151N (VR=5.0V)
R1151N (VR=3.3V)
ꢀꢀꢀꢀꢀꢀI
OUT=50mA
Cout=Ceramic 10uF
ꢀꢀꢀꢀꢀꢀI
OUT=50mA
3.340
3.330
3.320
3.310
3.300
3.290
3.280
6
Cout=Ceramic 10uF
5.030
5.020
5.010
5.000
4.990
8
7
5
Input Voltage
6
5
4
3
2
1
0
Input Voltage
4
3
2
1
0
Output Voltage
Output Voltage
0
25 50 75 100 125 150 175 200 225 250
Time (us)
0
25 50 75 100 125 150 175 200 225 250
Time (us)
R1151N (VR=2.5V)
IOUT=50mA
Cout=Ceramic 10uF
2.535
2.525
2.515
2.505
2.495
2.485
5
Input Voltage
4
3
2
1
0
Output Voltage
0
25 50 75 100 125 150 175 200 225 250
Time (us)
b. External Tr.: 2SB703
R1151N (VR=5.0V)
ꢀꢀꢀꢀꢀꢀI
Cout=Ceramic 10uF
R1151N (VR=3.3V)
OUT=50mA
ꢀꢀꢀꢀꢀꢀ
IOUT=50mA
Cout=Ceramic 10uF
5.030
5.025
5.020
5.015
5.010
5.005
5.000
4.995
4.990
8
3.340
3.330
3.320
3.310
3.300
3.290
3.280
6
7
6
5
4
3
2
1
0
5
Input Voltage
Input Voltage
4
3
2
1
0
Output Voltage
Output Voltage
0
25 50 75 100 125 150 175 200 225 250
0
25 50 75 100 125 150 175 200 225 250
Time (us)
Time (us)
Rev. 1.11
- 15 -
R1151N (VR=2.5V)
ꢀꢀꢀꢀꢀꢀI
OUT=50mA
Cout=Ceramic 10uF
2.535
2.525
2.515
2.505
2.495
2.485
5
Input Voltage
4
3
2
1
0
Output Voltage
0
25 50 75 100 125 150 175 200 225 250
Time (us)
c. External Tr. : 2SB940
R1151N (VR=5.0V)
R1151N (VR=3.3V)
ꢀꢀꢀꢀꢀꢀI
OUT=50mA
ꢀꢀꢀꢀꢀꢀI
OUT=50mA
Cout=Ceramic 10uF
Cout=Ceramic 10uF
5.030
5.025
5.020
5.015
5.010
5.005
5.000
4.995
4.990
8
3.340
3.330
3.320
3.310
3.300
3.290
3.280
6
7
6
5
Input Voltage
Input Voltage
4
3
2
1
0
5
4
3
2
1
0
Output Voltage
Output Voltage
0
25 50 75 100 125 150 175 200 225 250
0
25 50 75 100 125 150 175 200 225 250
Time (us)
Time (us)
R1151N (VR=2.5V)
ꢀꢀꢀꢀꢀꢀI
OUT=50mA
Cout=Ceramic 10uF
2.535
2.525
2.515
2.505
2.495
2.485
5
4
3
2
1
0
Input Voltage
Output Voltage
0
25 50 75 100 125 150 175 200 225 250
Time (us)
Rev. 1.11
- 16 -
9)Load Transient Response (Topt=25°C)
a: External Tr.: 2SA1441
R1151N (VR=5.0ꢀVꢀ)ꢀꢀꢀꢀꢀꢀV
IN=6.0V
R1151N (VR=3.3ꢀVꢀ)ꢀꢀꢀꢀꢀꢀꢀ
VIN=4.3V
CIN=Ceramic 4.7uF
ꢀCIN=Ceramic 4.7uF
COUT=Ceramic 10uF
COUT=Ceramic 10uF
3.35
3.34
3.33
3.32
3.31
3.30
3.29
120
5.05
5.04
5.03
5.02
5.01
5.00
4.99
120
100
80
60
40
20
0
100
80
60
40
20
0
Output Current
Output Current
Output Current
Output Voltage
0
100 200 300 400 500 600 700 800 900 100
0
100 200 300 400 500 600 700 800 900 100
Time (us)
0
Time (us)
0
R1151N (VR=2.5V)
ꢀꢀꢀꢀꢀꢀꢀꢀꢀV
IN=3.5V
ꢀC
IN=Ceramic 4.7uF
COUT=Ceramic 10uF
2.55
2.54
2.53
2.52
2.51
2.50
2.49
120
100
80
60
40
20
0
Output Current
Output Voltage
0
100 200 300 400 500 600 700 800 900 100
Time (us)
0
b. External Tr.: 2SB703
R1151N (VR=5.0V)
R1151N (VR=3.3V)
ꢀꢀꢀꢀꢀꢀꢀꢀꢀV
IN=4.3V
IN=Ceramic 4.7uF
ꢀꢀꢀꢀꢀꢀꢀꢀꢀV
IN=6.0V
ꢀC
ꢀC
IN=Ceramic 4.7uF
COUT=Ceramic 10uF
3.35
3.34
3.33
3.32
3.31
3.30
3.29
120
100
80
60
40
20
0
COUT=Ceramic 10uF
5.05
5.04
5.03
5.02
5.01
5.00
4.99
120
100
80
60
40
20
0
Output Current
Output Voltage
Output Current
Output Voltage
0
100 200 300 400 500 600 700 800 900 100
Time (us)
0
100 200 300 400 500 600 700 800 900 100
Time (us)
0
0
Rev. 1.11
- 17 -
R1151N (VR=2.5V)
VIN=3.5V
CIN=Ceramic 4.7uF
COUT=Ceramic 10uF
2.55
2.54
2.53
2.52
2.51
2.50
2.49
120
100
80
60
40
20
0
Output Current
Output Voltage
0
100 200 300 400 500 600 700 800 900 100
Time (us)
0
10) Detector Threshold vs. Temperature
R1151N (-VDET=8.0V)
8.70
R1151N (-VDET=4.2V)
4.60
4.50
4.40
4.30
4.20
4.10
4.00
8.60
8.50
8.40
8.30
8.20
8.10
8.00
7.90
7.80
-40
-15
10
35
60
85
-40
-15
10
35
60
85
(°C)
Temperature Topt(°C)
Temperature Topt
R1151N (-VDET=2.9V)
R1151N (-VDET=1.7V)
3.10
1.85
1.80
1.75
1.70
1.65
1.60
3.05
3.00
2.95
2.90
2.85
2.80
-40
-15
10
35
60
85
-40
-15
10
35
60
85
(°C)
(°C)
Temperature Topt
Temperature Topt
Rev. 1.11
- 18 -
11)VDET Output Voltage vs. Input Voltage
R1151N(-VDET=8.0V Pull-up to VDD)
9.0
R1151N(-VDET=8.0V Pull-up to 5V)
6.00
5.00
4.00
3.00
2.00
1.00
0.00
8.0
7.0
6.0
5.0
4.0
°C
Topt=-40
°C
°C
°C
Topt=-40
Topt=25
3.0
Topt=25
°C
°C
Topt=85
Topt=85
2.0
1.0
0.0
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
5
4
Input Voltage VIN(V)
Input Voltage VIN(V)
R1151N(-VDET=4.2V Pull-up to VDD)
R1151N(-VDET=4.2V Pull-up to 5V)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Topt=‐40
°C
°C
°C
Topt=-40
°C
Topt=25
Topt=25 °C
Topt=85
°C
Topt=85
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
R1151N(-VDET=2.9V Pull-up to VDD)
R1151N(-VDET=2.9V Pull-up to 5V)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Topt=-40
Topt=25
Topt=85
°C
°C
°C
°C
Topt=-40
Topt=25
°C
Topt=85
°C
0
0.5
1
1.5
2
2.5
3
3.5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
Rev. 1.11
- 19 -
R1151N(-VDET=1.7V Pull-up to 5V)
R1151N(-VDET=1.7V Pull-up to VDD)
6.0
5.0
4.0
3.0
2.0
1.0
0.0
2.5
2.3
2.0
1.8
1.5
1.3
1.0
0.8
0.5
0.3
0.0
Topt=‐40
°C
Topt=-40
°C
Topt=25
Topt=85
°C
°C
Topt=25
Topt=85
°C
°C
0
0.25 0.5 0.75
1
1.25 1.5 1.75
2
2.25 2.5
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
12) Nch Driver Output Current vs. VDS(Topt=25°C)
R1151N(-VDET=8.0V)
140
R1151N(-VDET=4.2V)
VDD=4.0V
60
50
40
30
20
10
0
VDD=7.5V
120
100
80
60
40
20
0
VDD=7.0V
VDD=6.5V
VDD=6.0V
VDD=5.5V
VDD=3.5V
VDD=3.0V
VDD=5.0V
VDD=4.5V
VDD=4.0V
VDD=2.5V
VDD=2.0V
VDD=1.5V
VDD=3.5V
VDD=3.0V
VDD=2.5V
VDD=2.0V
VDD=1.5V
VDD=1.0V
VDD=1.0V
2
0
1
3
4
5
6
0
1
2
3
4
5
6
7
8
9
10
VDS(V)
VDS(V)
R1151N(-VDET=2.9V)
R1151N(-VDET=1.7V)
30
25
20
15
10
5
8
7
6
5
4
3
2
1
VDD=1.5V
VDD=2.5V
VDD=2.0V
VDD=1.25V
VDD=1.5V
V
DD=1.0V
VDD=1.0V
0
0
0
0
0.5
1
1.5
VDS(V)
2
2.5
3
0.5
1
1.5
2
VDS(V)
Rev. 1.11
- 20 -
13) Nch Driver Output Current vs. Input Voltage
R1151N(-VDET=8.0V)
40
R1151N(-VDET=4.2V)
40
35
30
25
20
15
10
5
°C
Topt=85
35
30
25
20
15
10
5
Topt=25
°
C
Topt=85
°C
Topt=-40
°C
Topt=25
°C
Topt=-40
°C
0
0
0
2
4
6
8
10
0
1
2
3
4
5
IN
Input Voltage VIN(V)
Input Voltage V (V)
R1151N(-VDET=2.9V)
R1151N(-VDET=1.7V)
40
35
30
25
20
15
10
5
40
35
30
25
20
15
10
5
°C
Topt=85
°C
Topt=85
Topt=25
Topt=25
°C
°C
Topt=-40
°C
Topt=-40
°C
0
0
0
1
2
3
4
0
0.5
1
1.5
2
2.5
Input Voltage VIN(V)
Input Voltage VIN(V)
14)CD pin Threshold Voltage vs. Temperature
R1151N(-VDET=8.0V)
3.0
R1151N(-VDET=1.7V)
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
2.8
2.6
2.4
L-> H
H-> L
L->H
2.2
2.0
1.8
1.6
1.4
1.2
1.0
H->L
-40
-15
10
35
60
85
-40
-15
10
35
60
85
(°C)
Temperature Topt
Temperature Topt
(°C)
Rev. 1.11
- 21 -
15)CD Pin Output Current vs. Input Voltage
R1151N(-VDET=4.2V)
R1151N(-VDET=8.0V)
0.45
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0.40
Topt=-40
°C
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
°C
Topt=-40
Topt=25
°C
Topt=25
°C
Topt=85
°C
Topt=85
°C
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
Input Voltage VIN(V)
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Input Voltage VIN(V)
R1151N(-VDET=1.7V)
DET
R1151N(-V =2.9V)
0.45
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
°C
Topt=-40
°C
°C
Topt=85
°C
Topt=25
Topt=-40
Topt=25
°C
Topt=85
2.5
°C
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Input Voltage VIN(V)
0.0
0.5
1.0
1.5
2.0
3.0
3.5
Input Voltage VIN(V)
16)CD Pin Output Current vs. VDS (Topt=25°C)
R1151N(-VDET=8.0V)
R1151N(-VDET=4.2V)
2.5
6
VDD=4.0V
5
VDD=7.5V
VDD=7.0V
2
1.5
1
VDD=6.5V
VDD=6.0V
VDD=5.5V
VDD=3.5V
4
3
2
1
0
VDD=3.0V
VDD=2.5V
VDD=5.0V
VDD=4.5V
VDD=4.0V
VDD=3.5V
VDD=3.0V
VDD=2.5V
0.5
0
VDD=2.0V
VDD=1.5V
VDD=2.0V
VDD=1.5V
0
0.5
1
1.5
2
2.5
VDS (V)
3
3.5
4
4.5
5
0
1
2
3
4
5
6
7
8
9
VDS (V)
Rev. 1.11
- 22 -
R1151N(-VDET=2.9V)
R1151N(-VDET=1.7V)
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0.00
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
VDD=1.5V
VDD=2.4V
VDD=2.0V
VDD=1.2V
VDD=1.5V
0
0.25 0.5 0.75
1
1.25 1.5 1.75
0
0.5
1
1.5
VDS (V)
2
2.5
3
VDS (V)
17) Output Delay Time of Release vs. Temperature
R1151N(-VDET=8.0V)
R1151N(-VDET=1.7V)
External Capacitance=220pF
External Capacitance=220pF
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
-40
-15
10
35
60
85
-40
-15
10
35
60
85
(°C)
(°C)
Temperature Topt
Temperature Topt
18) Output Delay Time of Release vs. External Capacitance for CD pin (Topt=25°C)
R1151N(-VDET=1.7V)
R1151N(-VDET=8.0V)
100
10
1
100
10
1
0.1
0.1
10
100
1000
10
100
1000
External Capacitance for CD pin CD (pF)
External Capacitance for CD pin CD (pF)
Rev. 1.11
- 23 -
19)Output Delay Time of Detect vs. External Capacitance for CD pin (Topt=25°C)
R1151N(-VDET=8.0V)
R1151N (-VDET=4.2V)
10
10
1
1
10
100
1000
10
100
1000
External Capacitance for CD pin CD(pF)
External Capacitance for CD pin CD(pF)
R1151N(-VDET=2.9V)
R1151N(-VDET=1.7V)
10
10
1
1
10
100
1000
10
100
1000
External Capacitance for CD pin CD(pF)
External Capacitance for CD pin CD(pF)
■ Calculation of Output Delay Time of Release
tpLH(s)=2.31×C(F)/(300×10-9)(A)
tpLH vs. Capacitance
tpLH=2.31*C(F)/300*10^-9(A)
11
10
9
8
7
6
Calculated value
Measured value
5
4
3
2
1
0
0
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
External Capacitance for CD pin Cd(pF)
Rev. 1.11
- 24 -
■ For Stable Operation
Phase Compensation
In these ICs, phase compensation is externally made for securing stable operation even if the load current is varied. For this
purpose, be sure to use a capacitor for the output pin with good frequency characteristics and ESR (Equivalent Series
Resistance) of which is in the range described as follows:
VDET
EXT
CD
R1151NXXXC
VIN
Vout
Ceramic
Spectrum
Analyzer
Ceramic
Vin
Capacitanc
Capacitor
10
F
µ
S.A.
GND
4.7
F
µ
ESR
IIout
Measuring Circuit for white noise; R1112NXX1B
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.
<Measurement conditions>
(1) VIN=VOUT+1V
(2) Frequency band: 10Hz to 1MHz
(3) Temperature: 25°C
(4) COUT: Ceramic 10µF; ESR=0.075Ω(10kHz)
VR=2.5V (2SA1441)
VR=9.0V (2SA1441)
100
10
100
10
1
1
0.1
0.1
0.01
0.01
0
50 100 150 200 250 300 350 400 450 500
Output Current IOUT(mA)
0
50 100 150 200 250 300 350 400 450 500
Output Current IOUT (mA)
Rev. 1.11
- 25 -
VR=2.5V (2SB703)
VR=9.0V (2SB703)
100
100
10
10
1
1
0.1
0.1
0.01
0.01
250
0
50 100 150 200
300 350 400 450 500
0
50 100 150
250 300 350 400 450 500
200
Output Current IOUT(mA)
VR=2.5V (2SB940)
Output Current IOUT(mA)
VR=9.0V (2SB940)
100
10
100
10
1
1
0.1
0.1
0.01
0.01
0
250
150
250
50 100 150 200
300 350 400 450 500
0
50 100
200
300 350 400 450 500
Output Current IOUT (mA)
Output Current IOUT(mA)
Rev. 1.11
- 26 -
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