CPS295HT
Ambient Light Sensor

CPS295HT
Ambient Light Sensor（Analog Current Output）

Data Sheet© Yitoa Micro Technology Corp., 2020
Last Update 4-Nov./2020

Note : This document may be changed without prior notice. Please check the latest document for examination.

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CPS295HT

Ambient Light Sensor

１． Description
CPS295HT is an analog current output ambient light sensor with photo diode and current amplifier.
This IC can be used to Brightness control and on-off control of light sources such as a display .
And Improvement in display visibility, the improvement in a life of a light source, and reductionof power consumption are attained.

２． Features
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Small and thin package （1.8mm×1.4mm×0.58mm）
Spectral sensitivity close to human eye sensitivity
Output current in proportion to illuminanceLight source dependency is small
Solder re-flow permitted
Halogen free permitted

３． Maximum Ratings
Item

SymbolRatings

Unit

Supply voltage

VCC

6V

IOUT Current

IoutMax

6.5mA

Terminal input voltage range

Vimax

GND-0.3 to VCC+0.3

VPower dissipation

Pd94mWStorage temperature

Tstg-40 to 85℃

SymbokRatings

Unit

Supply voltage

VCC

2.7 to 5.5

V

Operating temperatureTopr-30 to 85℃

4． Recommended Operating Conditions
Item

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Ambient Light Sensor

５． Terminal Function and Equivalent Circuit on Terminal
No.

Name

Terminal Function

Equivalent Circuit
VCC

1SW

Gain Mode Setting Terminal

SW

GND
VCC

2

VCC

Power Supply Terminal

3

GND

Ground Terminal

GND

VCC

Current Output Terminal
4IOUT

Output current in proportion
to illuminance

IOUT

GND

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Ambient Light Sensor

６． Block Diagram

VCC2Gain
SelectPDCurrent
Amp14SWIOUT

R13GND

７． Gain Mode SettingSWGain ModeHigh

H_Gain （x1）Open

M_Gain (x0.1)

Low

L_Gain (x0.01)

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Ambient Light Sensor

８． Electrical and Optical Characteristics
Measurement condition ： VCC=3V

Item

Ta=25℃
Condition

MIN

TYP

MAX

Unit

Icc

Ev = 100lx
Gain Mode : H_Gain

-25%

315

+25%

uA

Output Dark Current

Iout0

Ev = 0lx--0.8uAOutput Current *1 *2

Iout1

Ev = 100lx
Gain Mode : H_Gain

192240288

uA

Peak Sensitivity
Wavelength*2λp-540-

nm

Ev = 100lx R1 = 150kΩ
Gain Mode : H_Gain

2.6--VEv = 100lx
Gain Mode : H_Gain-100-%

VIL

0-

0.4

V

VIH

2.5-

VCC

VGain Ratio 1
M_Gain / H_Gain *1

RG1-10%0.1+10%-

Gain Ratio 2
L_Gain/M_Gain

RG2-10%0.1+10%-

Supply Current

Symbol*1 *2

Saturated Output Voltage*1Vomax

Incandescent /White LED
Light Current Ratio *2RsSW
Low Level Input Voltage

SWHigh Level Input Voltage*1*1 White LED*2 It is design guarantee item

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Ambient Light Sensor

９． Reference Data

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１０． External Dimensions

１１．

Reference land pattern figure

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12．Dimensions and Location of Photo Diode and Recommendation Optical Area

1.8mm

0.7mm

Min. 0.6mm

0.9mm

0.42mmMin. 0.6mm

1.4mm

0.27mmPhoto DiodeMin. 0.6mm

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Min. 0.6mm

8Recommendation Optical Area
Please design optics so as to shed thelight on the range wider than this area.

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CPS295HT

Ambient Light Sensor

１3． To Customers:
If any product described in this document corresponds to goods or technologies which are restricted to export under theJapanese “Foreign Exchange and Foreign Trade Control Law” or other applicable laws of a government having
jurisdiction, then, appropriate permission for exporting such products or technologies are required to be taken.
In relation to use of the information contained in this document, no license is granted to you with regard to any
intellectual property rights of YITOA MICRO TECHNOLOGY CORPORATION (hereinafter referred to as "MTC")
or any third party. MTC will not be liable in any way for any claim related to infringement of intellectual property
rights or other rights of third parties arising from the use of the information contained in this document.
The information concerning the circuits and other related information contained in this document is provided forreferential purpose only to explain the operation or application of the products, and it will be your sole responsibility touse such information for designing of your own devices. MTC will not be liable in any way for any loss or damages
incurred to you or any other party arising from the use of such information.
In general, failures in semiconductor products occur at certain percentage. Therefore, upon designing your own
devices, please give due consideration to the redundancy, safety of your devices and methods to prevent occurrence ofmalfunction in order to avoid personal injuries, accidents or other social damages which might happen as the result of afailure of semiconductor products used in your devices.
For application of MTC products to medical equipment or other purposes where high reliability of the device isrequired, please contact MTC sales representative.
The contents of this documents may be subject to change without any notice, due to improvement of reliability or
design of the products.
It is inhibited to reproduce or copy the whole or part of this document without the permission of MTC.

YITOA Micro Technology Corporation
Sales Division
465 Osato-cho, Kofu-shi, Yamanashi
400-0053 Japan
Phone (81)-55- 241 – 8622

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