LM75BGD,125 NXP Semiconductors, LM75BGD,125 Datasheet - Page 15

• Manufacturer Part Number: LM75BGD,125
• Description: IC TEMP SENSOR DGTL 8-UXSON
• Manufacturer: NXP Semiconductors

Specifications of LM75BGD,125

• Package / Case: 8-XSON
• Function: Temp Sensor, Watchdog
• Topology: ADC (Sigma Delta), Comparator, Oscillator, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: I²C™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 2.8 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Temperature Threshold: + 80 C
• Full Temp Accuracy: +/- 3 C
• Digital Output - Bus Interface: I2C
• Digital Output - Number Of Bits: 11
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.8 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Supply Current: 100 uA
• Temperature Sensor Function: Temp Sensor
• Operating Temperature (max): 125C
• Operating Temperature Classification: Military
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-4769-2; 935288239125

NXP Semiconductors
8. Application design-in information
Table 14.
[1]
[2]
[3]
[4]
LM75B_2
Product data sheet
Description
availability of the XSON8U (3 mm
OS output auto-reset when SHUTDOWN bit is set in interrupt mode
support single-byte reading of the Temp registers without bus lockup
bus fault time-out (75 ms, 200 ms)
minimum data hold time (t
ratio of conversion time / conversion period (typical)
supply current in shutdown mode (typical value)
HBM ESD protection level (minimum)
MM ESD protection level (minimum)
CDM ESD protection level (minimum)
This option is updated to be compatible with the competitive parts. When the OS output has been activated in the interrupt mode due to
a temp limit violation, if the Configuration Shutdown bit B0 is set (to the LM75A), then the OS output activated status remains
unchanged, while (to the LM75B) the OS will be reset. The latter is compatible with the operation condition of the competitive parts.
The LM75 series is intentionally designed to provide two successive temperature data bytes (MSByte and LSByte) for the 11-bit data
resolution and both bytes should be read in a typical application. In some specific applications, when only the MSByte is read using a
single-byte read command, it often happens that if bit D7 of the LSByte is zero, then the device will hold the SDA bus in a LOW state
forever, resulting in a bus hang-up problem, and the bus cannot be released until the device power is reset. This condition exists for the
LM75A but not for the LM75B. For the LM75B the temperature can be read either one byte or two bytes without a hang-up problem.
The bus time-out is included for releasing the LM75B device operation whenever the SDA input is kept at a LOW state for too long
(longer than the LM75B time-out duration) due to a fault from the host. The trade-off for this option is the limitation of the I
frequency operation to be limited to 20 Hz. This option is compatible with some of the latest versions of the competitive parts.
The data hold time is improved to increase the timing margin in I
LM75A and LM75B comparison
8.1 Typical application
8.2 LM75A and LM75B comparison
HD;DAT
Fig 12. Typical application
)
[4]
[3]
BUS
PULL-UP
RESISTORS
2 mm) package type
DIGITAL LOGIC
I
2
C-BUS
10 k
Rev. 02 — 9 December 2008
[5]
10 k
SDA
SCL
2
C-bus operation.
A2
A1
A0
Digital temperature sensor and thermal watchdog
2
1
5
6
7
[1]
[2]
0.1 F
power supply
LM75B
8
4
V
GND
CC
LM75A
no
no
no
no
10 ns
100 ms / 100 ms
3.5 A
>2000 V
>200 V
>1000 V
3
OS
10 k
INTERRUPT LINE
DETECTOR OR
© NXP B.V. 2008. All rights reserved.
LM75B
yes
yes
yes
yes
0 ns
10 ms / 100 ms
0.2 A
>4500 V
>450 V
>2000 V
LM75B
002aad457
2
C-bus low
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