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S-58LM20A Series
www.sii-ic.com
© Seiko Instruments Inc., 2007-2015
CMOS TEMPERATURE SENSOR IC
Rev.3.1_00
The S-58LM20A Series is a high-accuracy temperature sensor IC on a single chip, provides output voltage which is linear
against the temperature change.
Each chip consists of a temperature sensor, a constant current circuit, and an operational amplifier.
The operating ambient temperature is from –55°C to 130°C. This IC has much better linearity than other conventional
temperature sensors such as thermistor, it is possible to achieve the extensive application for temperature control.
Features
Accuracy against temperature
Linear output voltage
Nonlinearity
Operation in wide range of power supply voltage
Low current consumption
Built-in operational amplifier
Output voltage referred to VSS
Lead-free, Sn 100%, halogen-free*1
±2.5°C (55°C to +130°C)
11.77 mV/°C Typ.
Ta = 30°C2.205 V Typ.
Ta = +30°C1.515 V Typ.
Ta = +130°C0.303 V Typ.
±0.4% Typ. (20 to +80°C)
VDD = 2.4 to 5.5 V (30°C to +130°C)
VDD = 2.7 to 5.5 V (55°C to +130°C)
4.5 μA Typ. (+25°C) 6.0 μA Max. (55°C to +130°C)
*1. Refer to “Product Name Structure” for details.
Applications
Compensation of high-frequency circuits such as cellular phones and radio equipment
Compensation of oscillation frequency in crystal oscillator
LCD contrast compensation
Compensation of amplifier gain
Compensation of auto focus circuits
Temperature detection in battery management
Overheating prevention for charged batteries or halogen lights
Package
SC-82AB
SNT-4A
WLP-4B
Seiko Instruments Inc.
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CMOS TEMPERATURE SENSOR IC
S-58LM20A Series
Block Diagram
VDD
VSS
Temperature sensor
Figure 1
Rev.3.1_00
VOUT
2 Seiko Instruments Inc.

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Rev.3.1_00
CMOS TEMPERATURE SENSOR IC
S-58LM20A Series
Product Name Structure
Users can select the product type in the S-58LM20A Series. Refer to “1. Product name” regarding the contents of product
name, “2. Package” regarding the package drawings and “3. Product name list” regarding the product type.
1. Product name
(1) SC-82AB package
S-58LM20A - N4T1 x
Environmental code
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
Package name (abbreviation) and packing specifications*1
N4T1 : SC-82AB, Tape
Product name
*1. Refer to the tape drawing.
(2) SNT-4A package
S-58LM20A - I4T1 U
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package name (abbreviation) and packing specifications*1
I4T1 : SNT-4A, Tape
Product name
*1. Refer to the tape drawing.
(3) WLP-4B package
S-58LM20A - H4T1 S
Environmental code
S: Lead-free, halogen-free
Package name (abbreviation) and packing specifications*1
H4T1 : WLP-4B, Tape
Product name
*1. Refer to the tape drawing.
Seiko Instruments Inc.
3