Rainbow Electronics LM85 - Manual (Page 2)

Connection Diagram
24 Pin QSOP
20035302
NS Package MQA24
Top View
LM85BIMQ or LM85CIMQ (55 units per rail), or
LM85BIMQX or LM85CIMQX (2500 units per tape and reel)
Information on the differences between the LM85BIMQ and LM85CIMQ can be found in Section 6.0. It is highly recommended
that all new designs use the LM85BIMQ.
Pin Descriptions
Symbol Pin Typ Name and Function/Connection
SMBus
SMBDAT 1 Digital I/O
(Open-Drain)
System Management Bus Data. Open-drain output. 5V tolerant,
SMBus 2.0 compliant.
SMBCLK 2 Digital Input System Management Bus Clock. Tied to Open-drain output. 5V
tolerant, SMBus 2.0 compliant.
Processor VID
Lines
VID0 5 Digital Input Voltage identification signal from the processor. This value is read
in the VID0–VID4 Status Register.
VID1 6 Digital Input Voltage identification signal from the processor. This value is read
in the VID0–VID4 Status Register.
VID2 7 Digital Input Voltage identification signal from the processor. This value is read
in the VID0–VID4 Status Register.
VID3 8 Digital Input Voltage identification signal from the processor. This value is read
in the VID0–VID4 Status Register.
VID4 19 Digital Input Voltage identification signal from the processor. This value is read
in the VID0–VID4 Status Register.
Power
3.3V 4 POWER +3.3V pin. Can be powered by +3.3V Standby power if monitoring
in low power states is required. This pin also serves as the analog
input to monitor the 3.3V supply. This pin should be bypassed
with a 0.1µf capacitor in parallel with 100pf. A bulk capacitance of
approximately 10µf needs to be in the near vicinity of the LM85.
GND 3 GROUND Ground for all analog and digital circuitry.
Voltage
Inputs
5V 20 Analog Input Analog input for +5V monitoring.
12V 21 Analog Input Analog input for +12V monitoring.
2.5V 22 Analog Input Analog input for +2.5V monitoring.
V
CCP
23 Analog Input Analog input for +V
CCP
(processor voltage) monitoring.
LM85
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