Datasheet > SGM447

SGM447

更新时间： 2024-10-03 11:08:23

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圣邦微 - SGMICRO		/
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描述
1.5V Dual-Gain Analog Temperature Sensor with Class-AB Output

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SGM447 数据手册

SGM447

1.5V Dual-Gain Analog Temperature Sensor

with Class-AB Output

GENERAL DESCRIPTION

FEATURES

The SGM447 is a high-accuracy analog output CMOS

integrated-circuit temperature sensor with tiny WLCSP

package. It can operate with a supply voltage of 1.5V in

the lowest gain configuration while measuring the

temperature of -55℃ to +150℃.

● Power Supply Voltage: 1.5V to 5.5V

● Low Quiescent Current

● Temperature Accuracy:

 -20℃ to +85℃: ±2.5℃ (MAX)

 -55℃ to +150℃: ±3.5℃ (MAX)

● Two Selectable Gains

The SGM447 is capable of strong output source and

sink current while driving heavy loads in that it has

class-AB output. Therefore, it is available for sourcing the

input of a sample-and-hold analog-to-digital converter

requiring transient load. Without using external

components such as resistors and buffers on the output,

the SGM447 can deliver the output voltage inversely

proportional to measured temperature from -55℃ to

+150 ℃ . Low supply current makes it suitable for

application in general temperature sensors and

battery-powered systems.

● 300μA (MAX) Source Current

● Push-pull Output

● Output Short-Circuit Protection

● Operating Temperature Range: -55℃ to +150℃

● Available in a Green WLCSP-0.8×0.8-4B-A

Package

APPLICATIONS

Temperature Sensing and Compensation

Battery Management

Automotive Equipment

The gain of the temperature-to-voltage output transfer

function is set by the gain selection input (GS) pin with

two selectable slopes, (-5.4mV/℃ at GS = 0 or -8.1mV/℃

at GS = 1). If the GS pin is connect to logic high, the

transfer function will achieve the maximum temperature

sensitivity gain. The GS pin can be connected to VDD

or GND without any components such as pull-up or

pull-down resistors to minimize the board area. During

operation or system diagnostics, if the input is driven by

a logical signal, then the system will optimize the gain.

TYPICAL APPLICATION

V_DD

1.5V to 5.5V

VDD

SGM447

OUT

Single-Cell

0.47μF

Battery

GND

The SGM447 is available in a Green WLCSP-0.8×0.8-

4B-A package. It is specified over a wide temperature

range of -55℃ to +150℃.

Available Detected Temperature Range from -55℃ to +150℃

Figure 1. Typical Application Circuit

SG Micro Corp

NOVEMBER 2022 – REV. A

www.sg-micro.com

12 3 4 5 6

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