S-5855A Series
www.ablic.com
www.ablicinc.com
© ABLIC Inc., 2010-2017
PWM OUTPUT TEMPERATURE SENSOR IC
Rev.1.3
_01
The S-5855A Series, developed by CMOS technology, is a 1-wire PWM output temperature sensor IC of low current
consumption that itself changes the duty ratio according to temperature.
The duty ratio decreases from 100% if exceeding the temperature set by user, and this decrease is linear against the
temperature rise.
The output form is selectable from CMOS output and Nch open-drain output.
Its small packages SNT-4A and SOT-23-5 enable high-density mounting.
Features
PWM output
Temperature accuracy
Duty ratio change-start temperature
Duty ratio temperature sensitivity
Low current consumption
Low power supply voltage
Wide range of operation temperature
Lead-free (Sn 100%), halogen-free
: 1-wire PWM interface
:
3.0C
: Selectable from
40C
to
80C
in 10C step
: Selectable from
1
%/C to
4
%/C in 1 %/C step
: 50
A
typ. (Ta =
25C)
: 1.65 V to 5.5 V
: Ta =
40C
to
125C
Application
Temperature compensation for LED instruments
Packages
SNT-4A
SOT-23-5
1
PWM OUTPUT TEMPERATURE SENSOR IC
S-5855A Series
Block Diagrams
1.
CMOS output product
Rev.1.3
_01
VDD
Temperature
sensor
Triangle wave
generator
VSS
DOUT
CF
C
FREQ
Figure 1
2.
Nch open-drain output product
VDD
Temperature
sensor
Triangle wave
generator
VSS
DOUT
CF
C
FREQ
Figure 2
2
Rev.1.3
_01
Product Name Structure
1.
Product name
S-5855
A
x
x
x
xxxx
U
PWM OUTPUT TEMPERATURE SENSOR IC
S-5855A Series
Environmental code
U
：Lead-free
(Sn 100%), halogen-free
Package name (abbreviation) and packing specifications
*1
I4T1
：SNT-4A,
Tape
M5T1
：SOT-23-5,
Tape
Output form
A
：CMOS
output
B
：Nch
open-drain output
Duty ratio temperature sensitivity
A
：1
%/C
B
：
2 %/C
C
：
3 %/C
D
：
4 %/C
Duty ratio change-start temperature
A
：40C
B
：
50C
C
：
60C
D
：
70C
E
：
80C
*1.
Refer to the tape drawing.
2.
Packages
Package Name
SNT-4A
SOT-23-5
Drawing Code
Package
PF004-A-P-SD
MP005-A-P-SD
Tape
PF004-A-C-SD
MP005-A-C-SD
Reel
PF004-A-R-SD
MP005-A-R-SD
Land
PF004-A-L-SD
3
PWM OUTPUT TEMPERATURE SENSOR IC
S-5855A Series
3.
Product name list
(1) SNT-4A
Table 1
Duty ratio
change-start
temperature
T
S
*1
[C]
40
80
80
Duty ratio
temperature
sensitivity
Ddt(s)
*2
[%/C]
3
1
3
*3
T
SP5
[C]
Rev.1.3
_01
Product name
S-5855AACA-I4T1U
S-5855AEAA-I4T1U
S-5855AECA-I4T1U
*1.
T
S
:
*2.
Ddt(s) :
*3.
T
SP5
:
*4.
T
EM5
:
Output form
CMOS output
CMOS output
CMOS output
T
EM5
*4
[C]
60
125
100
45
85
85
Duty ratio change-start temperature set by user
Duty ratio temperature sensitivity set by user
Temperature 5C higher than duty ratio change-start temperature T
S
(Refer to
Table 12
for details)
Higher temperature when measuring duty ratio temperature sensitivity (Refer to
Table 12
for details)
Remark
Please contact our sales office for products other than those specified above.
(2) SOT-23-5
Table 2
Duty ratio
change-start
temperature
T
S
*1
[C]
40
40
40
Duty ratio
temperature
sensitivity
Ddt(s)
*2
[%/C]
1
1
4
*3
T
SP5
[C]
Product name
S-5855AAAA-M5T1U
S-5855AAAB-M5T1U
S-5855AADA-M5T1U
Output form
CMOS output
Nch open-drain output
CMOS output
T
EM5
*4
[C]
115
115
55
45
45
45
Duty ratio change-start temperature set by user
*1.
T
S
:
*2.
Ddt(s) : Duty ratio temperature sensitivity set by user
*3.
T
SP5
: Temperature 5C higher than duty ratio change-start temperature T
S
(Refer to
Table 12
for details)
*4.
T
EM5
: Higher temperature when measuring duty ratio temperature sensitivity (Refer to
Table 12
for details)
Remark
Please contact our sales office for products other than those specified above.
4
Rev.1.3
_01
Pin Configurations
SNT-4A
Top view
PWM OUTPUT TEMPERATURE SENSOR IC
S-5855A Series
Table 3
Pin No.
1
4
3
Symbol
VSS
CF
VDD
DOUT
Pin Description
GND pin
Connection pin for frequency
control capacitor
Power supply pin
Output pin
1
2
2
3
4
Figure 3
SOT-23-5
Top view
5
4
Table 4
Pin No.
1
2
3
4
5
Symbol
CF
VSS
NC
*1
DOUT
VDD
Pin Description
Connection pin for frequency
control capacitor
GND pin
No connection
Output pin
Power supply pin
1
2
3
*1.
The NC pin is electrically open.
The NC pin can be connected to VDD pin or VSS pin.
Figure 4
5
Microchip MCU
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