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SE95
Datasheet
General description
The SE95 is a temperature-to-digital converter using an on-chip band gap temperature sensor and Sigma Delta analog-to-digital conversion technique. The device is also a thermal detector providing an overtemperature detection output.
The SE95 contains a number of data registers accessed by a controller via the 2-wire serial I2C-bus interface:
- Configuration register (Conf) to store the device settings such as sampling rate, device operation mode, OS operation mode, OS polarity, and OS fault queue
- Temperature register (Temp) to store the digital Temp reading
- Set-point registers (Tos and Thyst) to store programmable overtemperature shutdown and hysteresis limits
- Identification register (ID) to store manufacturer numbers
The device includes an open-drain output (pin OS) which becomes active when the temperature exceeds the programmed limits. There are three selectable logic address pins (pins A2 to A0) 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 two's complement data giving a temperature resolution of 0.03125 Cel. 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 Cel to provide the accuracies specified. To be compatible with the LM75, read only the 9 MSBs.
The device is powered-up in normal operation mode with the OS in comparator mode, temperature threshold of 80 Cel and hysteresis of 75 Cel, so that it can be used as a stand-alone thermostat with those pre-defined temperature set points. The conversion rate is programmable, with a default of 10 conversions/s.
Features
- Pin-for-pin replacement for industry standard LM75/LM75A
- Specification of a single part over supply voltage from 2.8 V to 5.5 V
- Small 8-pin package types: SO8 and TSSOP8 (MSOP8)
- I2C-bus interface to 400 kHz with up to 8 devices on the same bus
- Supply voltage from 2.8 V to 5.5 V
- Temperature range from -55 Cel to +125 Cel
- 13-bit ADC that offers a temperature resolution of 0.03125 Cel
- Temperature accuracy of +- 1 Cel from -25 Cel to +100 Cel
- Programmable temperature threshold and hysteresis set points
- Supply current of 7.0 uA in shutdown mode for power conservation
- Stand-alone operation as thermostat at power-up
- ESD protection exceeds 1000 V for Human Body Model (HBM) per JESD22-A114 and 150 V for Machine Model (MM) per JESD22-A115
- Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| SE95D | SE95D | 9352 741 41112 | Volume production | SOT96-1
(SO8) | Tube | Standard Marking | SE95D
| week 13, 2005 |
| SE95D | SE95D-T | 9352 741 41118 | Volume production | SOT96-1
(SO8) | Tape reel smd | Standard Marking | SE95D
| week 13, 2005 |
| SE95DP | SE95DP-T | 9352 741 42118 | Volume production | SOT505-1
(TSSOP8) | Reel Pack, SMD, 13" | Standard Marking | SE95DP
| week 13, 2005 |
| SE95U | 9352 838 59025 | Volume production | Uncased dieUncased die | Chips on Wafer, Un-Sawn, Electrical Tested | No Marking | SE95U
|
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| SE95D | 9352 741 41112 | 0.8400 | Order samples | |||||
| SE95D | 9352 741 41118 | 0.8400 | not available | |||||
| SE95DP | 9352 741 42118 | 0.8400 | Order samples | |||||
| SE95U | 9352 838 59025 | Order samples |
Applications
- System thermal management
- Personal computers
- Electronics equipment
- Industrial controllers
Related applications
LCD display - discretes focus
PDA - discretes focus
Motherboard components
50-60 Hz CRT integrated DTV (TV210D)
Mid-range integrated DTV (TV810)
Intelligent washing machine
Transceiver board
Power amplifier board
Main CPU board
LCD TV - MMS functionality
Technical documents
Application Notes
AN10216_1;
I2C manual (27-Mar-03)
Support Documents
75013239;
I 2 C Logic Selection Guide (2005-01-12)
75011212;
I2C 2002-1A Evaluation Board Kit (01-Mar-03)
75012744;
I2C Bus Solutions 2004 (2004-02-01)
philips_i2c_handbook;
I2C Handbook (2004-01-01)
75015139;
I2C temperature sensors selection guide (2005-06-01)
UM10204_3;
I2C-bus specification and user manual (26-Jun-07)
philips_i2c_logic_overview;
Interface Products Business Line Specialty Logic Product Line I2C Logic Family Overview (2004-01-01)
Parametrics/similar products
| Type number | Package | Standby current(uA) | Operating temp.(Cel) | Accuracy on-chip( C) | Assignable Addresses | Over Temperature Alert | Remote Temperature Monitor | SMBus Clock (max)(kHz) | Under Temperature Alert | Operating voltage(VDC) |
|---|---|---|---|---|---|---|---|---|---|---|
| SE95D | SOT96-1
(SO8) | 7 | -55~125 |
1@-25~100 2@-55~125 | 8 | yes | no | 400.0 | no | 2.8~5.5 |
| SE95DP | SOT505-1
(TSSOP8) | 7 | -55~125 |
1@-25~100 2@-55~125 | 8 | yes | no | 400.0 | no | 2.8~5.5 |
| SE95U | Uncased die
| 7 | -55~125 |
1@-25~100 2@-55~125 | 8 | yes | no | 400.0 | no | 2.8~5.5 |
Similar products
SE95 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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