＜Analog IC＞

RT8Ｈ144Ｃ

Under development＊This product is under development and may change at a later date.
Current driver circuits

DESCRIPTIONThis product is a semiconductor integrated circuit consisting

OUTLINE DRAWING

Unit：mmof an NPN transistor, a PNP transistor, and resistors.This2.8

product is a semiconductor integrated circuit consisting of an0.65

NPN transistor, a PNP transistor, and resistors. By using this1.50.65of the pulse signal.The output drive current can be adjusted③with an externally connected drive current setting⑥④0.33external sources into DC voltage according to the duty ratio

2.8

and man-hours.This product converts pulse signals from

①144

miniaturization of the set and a significant reduction in parts

0.95 0.95

product, it is possible toThe use of this product enables

the analog port of the microcontroller cannot be used.

0.12

be used.This IC is suitable for adjusting output current when0～0.1

analog port of a microcomputer cannot be used, this IC can0.81

externally connected drive current setting resistor. When the1.1

resistor.The output drive current can be adjusted by anFEATURES●Miniaturization of a set.
●Drive current can be adjusted
by duty ratio of input pulse signal●Drive current can be adjusted with external resistors

PIN CONFIGURATION
①OUT

⑥PWM

②C

⑤GND

③VCC

④CS

APPLICATION●LED driver circuit

BLOCK DIAGRAM

230609＜Analog IC＞

RT8Ｈ144Ｃ

Under development＊This product is under development and may change at a later date.
Current driver circuits

ABSOLUTE MAXIMUM RATINGS (Ta＝25℃)
SymbolParameterConditions
Vcc
Supply voltage
PdInternal power dissipation
Ta≧25℃Kθ
Thermal deratingTj
Junction temperatureTstg
Storage temperature(keep dry)
Topr
Operating temperature(keep dry)Ratings
40
200
1.6
150
－40～150－20～85Unit
VmWmW/℃℃℃℃

ELECTRICAL CHARACTERISTIC (Ta=25℃,VCC=12V unless otherwise noted.)
SymbolParameter

Test condition

VCC
Supply voltage
ICC1
Circuit current1
ICC2
Circuit current2
VCH1C pin H voltage 1
VCL1C pin L voltage 1
VCSTH1 CS pin threshold voltage 1
VCSTH2 CS pin threshold voltage 2
VCSTH3 CS pin threshold voltage 3
VAMP1 AMP voltage 1
VAMP2 AMP voltage 2
VAMP3 AMP voltage 3ICSBI
CS pin bias current
ICBI
C pin bias current
VTHPWM PWM pin threshold voltage
VSATOutput saturation voltage
ILEAK
Output leakage current

Min

Designed value
TypMax

90.35
0.65
6.0
0.95
0.46
0.06
0.85
0.41
0.07
0-300
1.08
-

PWM=5VPWM=0VPWM=5VPWM=0VPWM=5V,CS:VCC→L
C:VCH1/2,CS:VCC→L
C:VCH1/10,CS:VCC→L
C:6V,CS-OUT:100kΩpull up
C:3V,CS-OUT:100kΩpull up
C:0.6V,CS-OUT:100kΩpull up
PWM=5V,CS:12V/IM
PWM=0V,C:0V/IMOUT:5mA
VCC=OUT=40V

120.7
1.3
7
1.05
0.51
0.08
0.94
0.45
0.09
1.35
-37
1.05
1.95
8.1
0.3
1.16
0.56
0.10
1.03
0.50
0.11
20001.62
0.4
1Unit

VmAmA
V
V
V
V
V
V
V
VnAnA
V
VuA

CHARACTERISTICS

Thermal Derating
250

Pd[mW]

200

150

10050

002550

75

100

125

150

Ta[℃]

230609＜Analog IC＞

RT8Ｈ144Ｃ

Under development＊This product is under development and may change at a later date.
Current driver circuits
APPLICATION CIRCUIT EXAMPLES

Characteristic examples
・This product is configured to repeat charging and discharging depending on the frequency of the externallyconnected capacitance.The output is determined by the DUTY value of the pulse input of the PWM pin andthe capacitance value connected to the C pin.
The application circuit example shows the output characteristic graph under the following conditions.
Conditions: VCC=12V, PWM=5V, PWM frequency=20kHz, DUTY=0 to 100%, C-GND=0.022uF, Rout=10Ω

Vout-DUTY

Iout-DUTY
8120
80

Vout[V]

Iout[mA]

100604020642000204060DUTY[%]

80100020406080100

DUTY[%]*The configuration is designed to repeat charging and discharging, so the output current value will have a minuteamplitude corresponding to the input frequency.If the capacitance value connected to the C terminal is set toa large value, the output amplitude width can be reduced, but the time until the output reaches the set current
will be longer.

230609

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 customer’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 whenconsidering 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 from theJapanese 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.

Jun,2023