<Linear IC>

RT9H301C/P/S
Adjustable Precision Shunt Regulator

0.5

1.5

②

1.5
0.4

0～0.1

3.9

Outline : SC-59①Reference voltage(VREF)②Cathode(K)③Anode(A)●Source of reference voltage,
such as a general electric device●Secondary side control of aswitching power supply

①0.16

0.4

③②

4.4

0.5

3.0

①

1.60.4③

Outline : SC-62(SOT-89)①Reference voltage(VREF)②Anode(A)③Cathode(K)RT9H301S

14.0

1.0

1.0

0.1

7.5MAX

3.0

4.0

0.45

2.5
②③2.5

①

2.5

0.4

APPLICATION

2.41.02.5
1.50.8● Reference voltage:
VREF=2.495V±1%(Ta=25℃)● Adjustable output voltage:
VREF to 36V● Low output impedance:|ZKA|=0.2Ω(Typ.)● Small package:
SC-59,SC-62(SOT-89)

RT9H301P

0.5

2.9
1.90
0.95 0.95

FEATURE

RT9H301C

1.1

The RT9H301C/P/S is adjustable shunt
regulator, which provides a highly accurate
1.0%. Output voltage can be set to any value
between VREF and 36V with two externalresistors.

PIN CONFIGURATION ［UNIT：mm］

13.0MIN

DESCRIPTION

Outline : TO-92S①Cathode(K)②Anode(A)③Reference voltage(VREF)

111027

<Linear IC>

RT9H301C/P/S
Adjustable Precision Shunt Regulator
EQUIVALENT SCHEMATIC

KVREF

A

ABSOLUTE MAXIMUM RATINGS ( Ta=25℃, unless otherwise noted )SymbolParameterRatings
VKA
Cathode voltage
37
IK
Cathode current-100～100
IREF
Reference input current-0.05～10
TJOPT
Operating junction temperature ( Non condensing )-40～+150
TSTG
Storage temperature-55～+150
SC-59
Pd
Power dissipation
SC-62(SOT-89)
TO-92S

200500600

Unit
VmAmA℃℃mWmWmWRECOMMENDED OPERATING CONDITIONS ( Ta=25℃, unless otherwise noted )LimitsSymbolParameter
Unit
Min.
Max.
VKA
Cathode voltage
VREF
36V
Cathode current
1.0
100mA
ＩK

111027

<Linear IC>

RT9H301C/P/S
Adjustable Precision Shunt Regulator
ELECTRICAL CHARACTERISTICS ( Ta=25℃, unless otherwise noted )Symbol
VREF

Parameter

Test condition

Min.

Limits
Typ.

Max.

2.470

2.495

2.520

V

30mV

Unit

Reference voltage

VKA=VREF，IK=10mA⊿ＶＲＥＦ/⊿Ｔａ

Deviation of reference input
voltage over temperature

VKA=VREF，IK=10mA，Ta=-20～85℃--Ratio of VREF change in cathodevoltage change⊿VKA=VREF～10V，IK=10mA-2.7-1.4-mV/V⊿ＶＲＥＦ/⊿VK⊿VKA=10V～36V，IK=10mA-2-1-mV/V

Reference input current

IK=10mA,R1=10K，R2=∞--4uA⊿ＩＲＥＦ/⊿Ta

Deviation of reference input current
over temperature

IK=10mA,R1=10K，R2=∞, Ta=-20～85℃

--

2.5uA

Ikmin

Minimum cathode current forregulation

VKA=VREF

-0.3

0.6

mA

IOFF

Off-state cathode current

VKA=36V，VREF=0V

-0.1

1.0uA

|ZKA|

Dynamic impedance

VKA=VREF,IK=1～100mA，f<1.0KHz-0.20.5

Ω

IREF

PARAMETER MEASUREMENT INFORMATION(1)VKA=VREF(2)VKA＞VREF
VO=VKAVIN

VO=VKA

VIN

K

R1 IRE

A

R2VRE

VREF

K

A

VO=(1+R1/R2)・VREF(3)IOFF
VO=VKA

VIN
K
VREF
A

111027

<Linear IC>

RT9H301C/P/S
Adjustable Precision Shunt Regulator<TYPICAL CHARACTERISTICS>
Pd-Ta
2.60

RT 9H301S

600

Reference voltage VREF (V)Power dissipation Pd[mW]

700

VREF-Tj

500
400

RT 9H301P300

RT 9H301C

200
100

2.58
2.56

IK=10 ｍA

2.54

IK=100 ｍA

2.52
2.50
2.48

IK=1 ｍA

2.46
2.442.42
2.4000255075100125Junction temperature T a (℃)-50150-250255075 100
Junction temperature T j (℃)

IK-VKA （1）
150

1.0

Cathode current IK (mA)

Cathode current IK (mA)150

IK-VKA （2）

1.2

0.8
0.6
0.4
0.2

100
500-50-100

0.0012
Cathode voltage VKA (V)-23-1012
Cathode voltage VKA (V)

3IREF-Tj⊿VREF-VKA
4.00

Reference input current IREF(uA)

Deviation of reference input voltage⊿VREF(mV)

125-5-10-15-20-25-30-35-40-45-50

3.5
3.0
2.5
2.0
1.5
1.00.50.0051015202530
Cathode voltage VKA (V)

3540-50-250255075 100
Junction temperature T j (℃)

125150111027

<Linear IC>

RT9H301C/P/S
Adjustable Precision Shunt Regulator|ZKA|-f

IOFF-Tj
100

1.0E-06
Dynamic impedance|ZKA| (Ω)

Off-state cathode current
IOFF (uA)

1.0E-05

1.0E-07
1.0E-08
1.0E-091010.1

1.0E-101.0E-11-50 -250255075

0.01
1.E+02100 125 150

1.E+03Junction temperature T j (℃)

1.E+06

Av-f

Pulse response
660

5Open loop voltage gain
Av (dB)

Input and output voltage
VIN,VOUT (V)

1.E+04
1.E+05Frequency f (Hz)40

Input Voltage

43202
Output Voltage
100

1234
T ime t (us)

5

60-20
1.E+037

1.E+04

1.E+05
1.E+06Frequency f (Hz)

1.E+07

Stability boundary conditions

Cathode current IK (mA)

100abba80
Stability

Stability

c60

d40

a:VKA=VREF
b:VKA=5V
c:VKA=10V
d:VKA=15V
Cathode voltage temperature Ta=25
IKA=10mA CL=:Ceramic capacitor

20Instability

00.0010.010.1
Load capacitance CL (uF)110111027

Keep safety first in your circuit designs!
·ISAHAYA Electronics Corporation puts the maximum effort into making semiconductor products better and more reliable, but there isalways the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage.
Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (1) placementof substitutive, auxiliary, (2) use of non-farmable material or (3) prevention against any malfunction or mishap.
Notes regarding these materials·These materials are intended as a reference to our customers in the selection of the ISAHAYA products best suited to the customerʼ sapplication; they don't convey any license under any intellectual property rights, or any other rights, belonging ISAHAYA or third party.
·ISAHAYA Electronics Corporation assumes no responsibility for any damage, or infringement of any third party's rights, originating in the useof any product data, diagrams, charts or circuit application examples contained in these materials.
·All information contained in these materials, including product data, diagrams and charts, represent information on products at the timeof publication of these materials, and are subject to change by ISAHAYA Electronics Corporation without notice due to product improvements
or other reasons. It is therefore recommended that customers contact ISAHAYA Electronics Corporation or an authorized ISAHAYA products
distributor for the latest product information before purchasing product listed herein.
·ISAHAYA Electronics Corporation products are not designed or manufactured for use in a device or system that is used under circumstances inwhich human life is potentially at stake. Please contact ISAHAYA Electronics Corporation or an authorized ISAHAYA products distributor when
considering the use of a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular,medical, aerospace, nuclear, or undersea repeater use.
·The prior written approval of ISAHAYA Electronics Corporation is necessary to reprint or reproduce in whole or in part these materials.
·If these products or technologies are subject to the Japanese export control restrictions, they must be exported under a license fromthe Japanese government and cannot be imported into a country other than the approved destination. Any diversion or re-export contrary to
the export control laws and regulations of Japan and/or the country of destination is prohibited.
·Please contact ISAHAYA Electronics Corporation or authorized ISAHAYA products distributor for further details on these materials or
the products contained therein.

Aug.2016