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PDF S-5855A Data sheet ( Hoja de datos )
| Número de pieza | S-5855A | |
| Descripción | PWM OUTPUT TEMPERATURE SENSOR IC | |
| Fabricantes | Seiko Instruments | |
| Logotipo |  |
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S-5855A Series
www.sii-ic.com
© Seiko Instruments Inc., 2010-2013
PWM OUTPUT TEMPERATURE SENSOR IC
Rev.1.2_00
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
: ±3.0°C
: Selectable from +40°C to +80°C in 10°C step
: Selectable from −1 %/°C to −4 %/°C in 1 %/°C step
: 50 μA typ. (Ta = +25°C)
: 1.65 V to 5.5 V
: Ta = −40°C to +125°C
Application
• Temperature compensation for LED instruments
Packages
• SNT-4A
• SOT-23-5
Seiko Instruments Inc.
1
1 page  
Rev.1.2_00
Pin Configurations
SNT-4A
Top view
14
23
Figure 3
SOT-23-5
Top view
54
12 3
Figure 4
PWM OUTPUT TEMPERATURE SENSOR IC
S-5855A Series
Pin No.
1
2
3
4
Table 3
Symbol
VSS
CF
VDD
DOUT
Pin Description
GND pin
Connection pin for frequency
control capacitor
Power supply pin
Output pin
Table 4
Pin No.
Symbol
Pin Description
1 CF Connection pin for frequency
control capacitor
2
VSS
GND pin
3
NC*1
No connection
4
DOUT
Output pin
5
VDD
Power supply pin
*1. The NC pin is electrically open.
The NC pin can be connected to VDD pin or VSS pin.
Seiko Instruments Inc.
5
5 Page 
Rev.1.2_00
4.
CIN
PWM OUTPUT TEMPERATURE SENSOR IC
S-5855A Series
VDD
S-5855A
CF Series DOUT
VSS
V
RL
CL
5.
CIN
Figure 8
VDD
S-5855A
CF Series DOUT
VSS
RL
CL
V
Figure 9
Seiko Instruments Inc.
11
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet S-5855A.PDF ] | |
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