Features: • Pin-for-pin replacement for industry standard LM75/LM75A and offers improved temperature resolution
• Specification of a single part over power supply range from 2.8 V to 5.5 V.
• Small 8-pin package types: SO8 and TSSOP8 (MSOP8)
• I2C-bus interface to 400kHz with up to 8 devices on the same bus
• Power supply range from 2.8 V to 5.5 V
• Temperatures range from 55 °C to +125 °C
• 13-bit ADC that offers a temperature resolution of 0.03125 °C
• Temperature accuracy of ±1 °C from 25 °C to +100 °C
• Programmable temperature threshold and hysteresis set points
• Supply current of 7.0 A in shut-down mode for power conservation
• Stand-alone operation as thermostat at power-up
• ESD protection exceeds 1000 V HBM per JESD22-A114,150 V MM per JESD22-A115
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mAApplication• System thermal management
• Personal computers
• Electronics equipment
• Industrial controllersPinout
Specifications
|
SYMBOL |
PARAMETER |
MIN. |
MAX. |
UNIT |
| |
VCC to GND |
-0.3 |
6.0 |
V |
| |
Voltage at inputs SCL and SDA |
-0.3 |
6.0 |
V |
| |
Voltage at inputs A0, A1, A2 |
-3.0 |
VCC+0.3 |
V |
| |
Current at input pins |
-5.0 |
5.0 |
mA |
| |
OS output sink current |
- |
10.0 |
mA |
| |
OS output voltage |
-0.3 |
6.0 |
V |
| Vesd |
Human Body Model |
- |
1000 |
V |
| Machine Model |
- |
150 |
V |
| Tstg |
Storage temperature range |
-65 |
150 |
|
| Tj |
Junction temperature |
- |
150 |
|
NOTE:
1. This is a stress rating only. Functional operation of the device as indicated in the operational section is not applied to this absolute maximum rating. Stresses above those listed in 'Absolute Maximum Ratings' may cause permanent damage to the device and exposure to any of these rating conditions for extended periods may affect device reliability.
DescriptionThe SE95 is a temperature-to-digital converter using an on-chip band-gap temperature sensor and Sigma-delta A-to-D conversion technique. The device is also a thermal detector providing an over-temp detection output. The SE95 contains a number of data registers: Configuration register (Conf) to store the device settings such as sampling rate, device operation mode, OS operation mode,OS polarity, and OS fault queue as described in the functional description section; temperature register (Temp) to store the digital temp reading, and set-point registers (Tos & Thyst) to store
programmable overtemp shutdown and hysteresis limits, and also an ID register to store manufacturer numbers. These registers are accessed by a controller via the 2-wire serial I2C-bus interface. The device includes an open-drain output (OS) which becomes active when the temperature exceeds the programmed limits. There are three selectable logic address pins so that eight devices can be connected on the same bus without address conflict.
The SE95 can be configured for different operation conditions. It can be set in normal mode to periodically monitor the ambient temperature, or in shutdown mode to minimize power consumption. The OS output operates in either of two selectable modes: OS comparator mode and OS interrupt mode. Its active state can be selected as either HIGH or LOW. The fault queue that defines the number of consecutive faults in order to activate the OS output is programmable as well as the set-point limits.
The temperature register always stores a 13-bit 2's complement data giving a temperature resolution of 0.03125 °C. This high temperature resolution is particularly useful in applications of measuring precisely the thermal drift or runaway. For normal operation and compatibility with the LM75A, only the 11 MSBs are read, with a resolution of 0.125 °C to provide the accuracies specified. To be compatible with the LM75, read only the 9 MSBs.
SE95 Data Sheet
