DS1780E Maxim Integrated Products, DS1780E Datasheet - Page 27

• Manufacturer Part Number: DS1780E
• Description: IC CPU PERIPHERAL MON 24-TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of DS1780E

• Function: Thermal Monitor, CPU Peripherals
• Topology: ADC (Sigma Delta), Comparator, Fan Speed Control, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -40°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 2.8 V ~ 5.75 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Full Temp Accuracy: +/- 12 %
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 8 bit
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2-WIRE BUS TIMING DIAGRAM Figure 8
NOTES:
1. All voltages are referenced to ground, unless otherwise specified.
When the input voltage (VIN) at any pin exceeds the power supplies (V
2. Solder according to IPC standards.
3. IDD specified with open-drain output pin open.
4. IDD specified with V
5. TUE (Total Unadjusted Error) includes Offset, Gain and Linearity errors of the ADC.
6. Monitoring Cycle Time includes temperature conversion, voltage conversions, and fan speed
7. The total fan count is based on 2 pulses per revolution of the fan tachometer output.
8. Limits (Min and Max specs) are defined for the full temperature range -40°C £ T
ORDERING INFORMATION Table 11
Note : A "+" symbol will also be marked on the package near the Pin 1 indicator
DS1780E+
DS1780E+T&R
DS1780E
DS1780E/T&R
ORDERING
>V
maximum package input current rating limits the number of pins that can safely exceed the power
supplies with an input current of 5 mA to four.
readings.
voltage range 2.8V £ V
parametric norms at T
NUMBER
DD
, except for analog voltage inputs), the current at that pin should be limited to 5 mA. The 20 mA
DS1780 (See Note)
DS1780 (See Note)
DS1780
DS1780
MARKING
PACKAGE
CC
A
= 25°C at 4.5V £ V
at 5.0V and SDA, SCL = 5.0V.
DD
£ 5.75V, unless otherwise stated as a condition. Typical values represent
DS1780 in Lead-Free 24-pin TSSOP
DS1780 in Lead-Free 24-pin TSSOP, 1000 Piece Tape-and-
Reel
DS1780 in 24-pin TSSOP
DS1780 in 24-pin TSSOP, 1000 Piece Tape-and-Reel
DD
27 of 28
£ 5.5V, unless otherwise stated as a condition.
DESCRIPTION
IN
< (GND or GNDA) or V
A
£ +125°C and
IN