NR301E

Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
Package
General Descriptions
NR301E is the low saturation voltage type Io=1.0A linear
regulator IC built in the exposed SOIC8 package.
The output voltage Vo is adjustable by the external resistor.
In this IC, start-up and shut-down are possible by the
external signal input.
Over-current protection and thermal protection are built in
as a protection function.
A low-ESR capacitor like a ceramics capacitor can be used
for the output capacitor.
●
●
●
Package Name：Exposed SOIC 8
Exposed pad is a radiator on back-side of package.
Surface mount 8-pin package
Exposed SOIC 8(HSOP8)
Features & Benefits
 The output voltage is adjustable by the external resistor.
 Start-up and shut-down are possible when a VC terminal
is used.( External signal input)
 Ceramics capacitor is possible to use as the output
capacitor .
 Protection Functions
－Over current protection(OCP)
－Thermal protection with temperature hysteresis .
(TSD)
Pin Assign
Electrical Characteristics
 Input voltage: Vin=2.7V to 27V（Recommeded）
 Reference voltage:VFB = 1.0V ±1.5%
 Output current: Io= 1.0A
 Difference in input and output:VDIF = typ. 0.6V
Applications
●
●
●
●
For local regulator circuit
LCD-TV/STB/DVD/Blu-Ray
Audio/PC
USBoutput protection
Typical Application Circuit
CIN：1μF／50V, COUT：1μF／50V, R1：39kΩ+1kΩ, R2：10kΩ
Rev.1.2
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1
Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
Series Line-up
Products name
Vin(max)
Io(max)
Vc(on/off)
VDIF
NR301E
30V
1A
2V/0.6V
0.6V@1A,[email protected]
Absolute Maximum Ratings
*The condition when there is no special mention:
Parameter
terminal
Symbol
Ratings
Units
DC input voltage
4−8
Vin
30
V
Vc terminal voltage
4−5
VC
30
V
4−3
VADJ
5.0
V
―
PD
1.4
W
Thermal Resistance(junction to
ambient Air)
―
θj-a
71
°C/W
Thermal Resistance（junction to
Pin No.4）
―
θj-L
26
°C/W
Junction temperature
―
TJ(max)
−40～+125
°C
Strage temperature
―
Tstg
−40～+125
°C
ADJ terminal voltage
Power Dissipation
(1)
(2)
(1)
Ta=25°C
Conditions
Vc≦Vin
Glass-epoxy board
mounting
in a 30×30mm.
(copper area in a
25×25mm)
This product builds in
an thermal protection
circuit. When
junction-temperature is
more than
135℃,thermal
protection often works.
Limited by thermal shutdown.
The temperature detection of thermal shutdown is about 155°C (Typical).
Recommended Operating Conditions
*The condition when there is no special mention:
Parameter
terminal
Symbol
Ratings
MIN
MAX
Units
Input voltage range
(1)
4−8
Vin
2.7
27
V
Output current range
(１)
4−8
IO
0
1.0
A
Output voltage range
―
VO
1.1
16
V
Ambient operating temperature
―
―
TOP(a)
-30
85
°C
Junction operating temperature
TOP(j)
-30
100
(1)
Vin and Io are restricted by the use condition because there are relations of PD= (Vin-Vo) ×Io.
Rev.1.2
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Ta=25°C
Conditions
Refer to
Page7
°C
2
Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
Electrical Characteristics
The condition when there is no special mention: Vin＝VO+1V，VO＝5V(typ)：R1=10kΩ, R2=39k+1k、Ta= 25°C
Parameter
Symbol
Ratings
Units
Conditions
MIN
TYP
MAX
VADJ
0.985
1.00
1.015
V
Line regulation
ΔVLINE
―
25
50
mV
Vin=6~15V，Io=10mA
Load regulation
ΔVLOAD
―
30
60
mV
Io=0～1A
―
0.3
0.4
V
Io=0.5A
―
0.6
0.8
V
Io=1A
Reference voltage
Io=10mA
Difference in input and output
ΔVDIF
Supply Current(Non-operating)
Iq
0.5
0.9
1.6
mA
Io=0mA，VC=2V
Iq(OFF)
―
0
1
uA
VC=0V
ΔVo/ΔTa
―
±0.5
―
R.REJ
―
55
―
Shutdown Supply Current
Output voltage temperature
coefficient
Power supply rejection ratio
mV/°C Tj=0～100°C
dB
Vo=5V，Io=0.1A，
ｆ=100～120Hz
Output voltage
Vo :ON
VC(H)
2.0
―
―
V
Io=10mA
control terminal
Vo:OFF
VC(L)
―
―
0.6
V
Io=10mA
voltage *2
Output voltage
Vo:ON
VC(IH)
―
4
40
uA VC=2.0V
control terminal
Vo:OFF
VC(IL)
-2
0
0.1
uA VC=0V
current *2
Over current protection
IS1
1.1
―
―
A
Vin=7V
threshold *3
Thermal shutdown threshold
TSD
135
155
°C
―
―
temperature
Thermal shutdown
TSD(HYS)
―
50
―
°C
―
restart hysteresis of temperature
*2 The internal circuit of the Vc-terminal is high impedance, To avoid a un-stable condition, the Vc-terminal must
surely pull-up or pull-down.
Because Vc-terminal input level is equal to the LS-TTL, therefore direct-drive is possible.
*3 Is1 is prescribed that the output voltage Vo descend to -5%.
Rev.1.2
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3
Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
Typical Performance Characteristics
＊Vout＝5V 設定時.(R2=10kΩ) Ta=25℃
(4)Line regulation
(1) Quiescent Current
VIN-Iｑ
VLINE
5.1
1.8
1.6
5.08
Iout=0A
Iout=0A
5.06
1.4
5.04
1.2
Quiescent
1
Current
mA 0.8
Vout
5.02
V
4.98
5
0.6
4.96
0.4
4.94
0.2
4.92
4.9
0
0
5
10
15
20
25
Input voltage
30
0
5
10
V
15
Input voltage
(2)Input voltage vs. Output
voltage
VIN-Vout
20
V
(5)Load regulation
6
VLOAD
5.04
5.03
Vin=10v
6v
5.02
Vout
V
5.01
4
Vout
Io=0A
0.5A
1A
2
5
4.99
V
4.98
4.97
4.96
4.95
0
2
4
Input voltage
6
4.94
8
0
V
0.2
(3)Output current vs. Dropout voltage
Dropout
voltage
V
0.5
1
OCP Iout-Vout
Vo=2.5v
Vo=2.5v
3.3V 3.3v
5V 5v
9V 9v
15V 15v
0.6
0.8
A
6
0.9
0.7
0.6
(6)Over current protection
Iout-VDIF
0.8
0.4
Output current
5
4
Vin=6v
10v
3
Vout
V 2
0.4
0.3
1
0.2
0.1
0
0
0
0.2
0.4
0.6
Output current
Rev.1.2
0.8
1
0
A
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0.5
1
Output current
1.5
2
A
4
Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
(7)On/Off Control
(８)Thermal shut down
Vc-Vo
6
Iout=0A
5
5
4
4
Vout
3
V
Vout
V
2
3
2
1
1
0
0
0.5
1
1.5
2
Vc terminal voltage
Rev.1.2
TSD
6
2.5
3
0
0
20
40
V
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60
80
100 120 140 160 180
Junction temperature
℃
5
Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
Functional Block Diagram
Vin 8
1 Vout
Vo
OCP
Drv
BGRef
Vc 5
2 ADJ
OTA
+
Vadj
+
Vc
-
2V/0.6V
+
+
155℃
OVP
TSD
-
-
GND 3
4 NC
6 NC
1.1Vadj
Hys50℃
7 NC
NR301E Block Diagram
Pin Assignments & Functions
Pin assign & function
Pin No.
Symbol
Description
1
VO
Output voltage
2
ADJ
Output voltage adjustment
3
GND
Ground
4
NC
No connection
5
VC
Output ON/OFF control
NC
No connection
Vin
Input voltage
6
7
8
*Back side FIN(Exposed thermal pad): Sub- straight (Ground)
Rev.1.2
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Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
Example Application Circuit
CIN：1μF／50V, COUT：1μF／50V, R1：39kΩ+1kΩ, R2：10kΩ
A precaution in design
In case of the Vo=5V and Vin=6V.
CIN、COUT ：1uF/16V
R1、R2 ：It is controlled so that ADJ-GND voltage may be 1V (typ).
R1：39k+1k(A resistor for the fine tuning),
R2：10k
Vo 
R3
D1
Rev.1.2
R1  R 2
Vo  Vadj
Vadj　R1 
R2
R2
Vadj
：About handling of the Vc terminal function .
case1）If you don't use Vc function ( Vo normally ON ), Vc must connect to Vin directly with R3= 0Ω.
case2）If you use Vc function (Vo ON/OFF) by TTL-Logic signal, R3 is unnecessary. Input a TTL-Logic
signal to Vc directly.
case3）If you use Vc function (Vo ON/OFF) by the condition of open-collector or open-drain, You must
connect pull-up resistor R3 between Vin and Vc.
： Diode for the reverse bias protection. When relations between the input voltage and the output voltage are
reversed (Vin<Vo),this diode is necessary.
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Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
Allowable package power dissipation
1.6
Glass-epoxy board mounting in a
30×30mm
1.4
許容損失 PD [W]
Power Dissipation
1.2
1
0.8
copper area : 25×25mm
0.6
0.4
0.2
0
-25
0
25
50
周囲温度 Ta [℃ ]
Ambient Temperature
75
100
125
Note:
*The power dissipation is calculated at the junction temperature 125 °C
Pattern Design
VIN
Vc
Note:
Size of the PCB is about
GND
R3
C1
28mm×40mm t=1.6mm
(double sided board, copper foil
thickness=35μm)
NR301E
GND
C2
R1-1
R2
R1-2
Vo
Adj
Front side(Component Side)
Back side(Ground plain)
Note:
1) Dimension is in millimeters,
dimension in bracket is in inches.
2) Drawing is not to scale.
Rev.1.2
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Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
Package Outline (Exposed SOIC8)
8
1
7
6
2
3
5
4
Bottom view
Top view
Exposed SOIC8 package Outline
Outside size table
Symbol
MIN
０
1.25
0.38
4.80
3.10
5.80
3.80
2.20
－
0.45
A1
A2
ｂ
D
D1
E
E1
E2
ｅ
Ｌ
Demension
TYP
0.10
1.40
－
4.90
3.30
6.00
3.90
2.40
1.27
0.60
MAX
0.15
1.65
0.51
5.00
3.50
6.20
4.00
2.60
－
0.80
Notes:
1) Dimension is in millimeters(mm).
2) Drawing is not to scale.
Rev.1.2
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Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
Marking of NR301E
Laser marking, specifications are based on the following.
*1. Product number
*2. Lot number (three digit)
1st letter : The last digit of the year
2nd letter : Month
January to September : 1 to 9
October : O
November : N
December : D
3rd letter : manufacturing week
First week to 5th week : 1 to 5
*3. Control number (four digit)
Rev.1.2
*1
NR301E
SK
*2
*3
Marking specification
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Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
OPERATING PRECAUTIONS
Reliability can be affected adversely by improper storage environments and handling methods. Please observe the
following cautions.
Heat dissipation and reliability
Thermal performance of the surface mo unt package IC depends on the material and area size of PCB and its copper
plane. Design thermal condition with sufficient margin
Parallel operation
The parallel operation to increase the current is not available.
Thermal shut down
The NR301E has a thermal protection circuit.
This circuit protects the IC from the heat generation by the over load.
This circuit cannot guarantee the long-term reliability against the continuously over load status.
Cautions for Storage
 Ensure that storage conditions comply with the standard temperature (5 to 35°C) and the standard relative humidity
(around 40 to 75%); avoid storage locations that experience extreme changes in temperature or humidity.
 Avoid locations where dust or harmful gases are present and avoid direct sunlight.
 Reinspect for rust on leads and solderability of products that have been stored for a long time.
Cautions for Testing and Handling
 When tests are carried out during inspection testing and other standard test periods, protect the products from power
surges from the testing products, shorts between the product pins, and wrong connections. In addition, avoid tests
exceeded ratings
Soldering
When soldering the products, please be sure to minimize the working time, within the following limits.
・Reflow Preheat ; 180°C / 90±30s
Heat ; 250°C / 10±1s (260°C peak ,2times)
・Soldering iron ; 380±10°C / 3.5±0.5s (1time)
Electrostatic Discharge
 When handling the products, the operator must be grounded. Grounded wrist straps worn should have at least 1MΩ of
resistance from the operator to ground to prevent shock hazard, and it should be placed near the operator.
 Workbenches where the products are handled should be grounded and be provided with conductive table and floor mats.
 When using measuring equipment such as a curve tracer, the equipment should be grounded.
 When soldering the products, the head of a soldering irons or the solder bath must be grounded in order to prevent leak
voltages generated by them from being applied to the products.
 The products should always be stored and transported in Sanken shipping containers or conductive containers, or be
wrapped in aluminum foil.
Rev.1.2
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11
Io=1A,Vin=27V, eSOIC8 Linear Regulator IC
NR301E
Sep./19/2014
IMPORTANTS NOTES
 The contents in this document are subject to changes, for improvement and other purposes, without notice.
Make sure that this is the latest revision of the document before use.
 Application and operation examples described in this document are quoted for the sole purpose of reference for
the use of the products herein and Sanken can assume no responsibility for any infringement of industrial
property rights, intellectual property rights or any other rights of Sanken or any third party which may result
from its use.
 Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and
defect of semiconductor products at a certain rate is inevitable. Users of Sanken products are requested to take,
at their own risk, preventative measures including safety design of the equipment or systems against any
possible injury, death, fires or damages to the society due to device failure or malfunction.
 Sanken products listed in this document are designed and intended for the use as components in general purpose
electronic equipment or apparatus (home appliances, office equipment, telecommunication equipment,
measuring equipment, etc.).
When considering the use of Sanken products in the applications where higher reliability is required
(transportation equipment and its control systems, traffic signal control systems or equipment, fire/crime alarm
systems, various safety devices, etc.), please contact your nearest Sanken sales representative to discuss, prior to
the use of the products herein.
The use of Sanken products without the written consent of Sanken in the applications where extremely high
reliability is required (aerospace equipment, nuclear power control systems, life support systems, etc.) is strictly
prohibited.
 In the case that you use Sanken semiconductor products or design your products by using Sanken
semiconductor products, the reliability largely depends on the degree of derating to be made to the rated values.
Derating may be interpreted as a case that an operation range is set by derating the load from each rated value or
surge voltage or noise is considered for derating in order to assure or improve the reliability. In general, derating
factors include electric stresses such as electric voltage, electric current, electric power etc., environmental
stresses such as ambient temperature, humidity etc. and thermal stress caused due to self-heating of
semiconductor products. For these stresses, instantaneous values, maximum values and minimum values must
be taken into consideration.
In addition, it should be noted that since power devices or IC’s including power devices have large self-heating
value, the degree of derating of junction temperature affects the reliability significantly.
 When using the products specified herein by either (i) combining other products or materials therewith or (ii)
physically, chemically or otherwise processing or treating the products, please duly consider all possible risks
that may result from all such uses in advance and proceed therewith at your own responsibility.
 Anti radioactive ray design is not considered for the products listed herein.
 Sanken assumes no responsibility for any troubles, such as dropping products caused during transportation out
of Sanken’s distribution network.
 The contents in this document must not be transcribed or copied without Sanken’s written consent.
Rev.1.2
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