GENERAL DESCRIPTION

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℃.

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.

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/℃

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

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

logical signal, then the system will optimize the gain.

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℃.

FEATURES

● 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

● 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