MAX6650EUB+T Maxim Integrated Products, MAX6650EUB+T Datasheet - Page 6
![IC REG FAN SPEED 10-MSOP](/photos/6/57/65724/175-10-umax_sml.jpg)
MAX6650EUB+T
Manufacturer Part Number
MAX6650EUB+T
Description
IC REG FAN SPEED 10-MSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX6650EUBT.pdf
(25 pages)
Specifications of MAX6650EUB+T
Applications
Fan Controller, Brushless (BLDC)
Number Of Outputs
1
Voltage - Load
0.3 V ~ 5.2 V
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Operating Supply Voltage
3 V to 5.5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
MAX6650EUB+T
MAX6650EUB+TTR
MAX6650EUB+TTR
Fan-Speed Regulators and Monitors
with SMBus/I
The MAX6650/MAX6651 employ three standard SMBus
protocols: write byte, read byte, and receive byte
(Figure 2). The shorter protocol (receive) allows quicker
transfers, provided that the correct data register was
previously selected by a write or read byte instruction.
Use caution with the shorter protocol in multimaster
systems, since a second master could overwrite the
command byte without informing the first master.
The device address can be set to one of four different
values. Accomplish this by pin-strapping ADD so that
more than one MAX6650/MAX6651 can reside on the
same bus without address conflicts (Table 1).
Figure 1. Block Diagram
6
_______________________________________________________________________________________
INTERFACE
SMBus/I
3V TO 5.5V
10kΩ
V
2
CC
C
V
SCL
SDA
ADD
GND
CC
ALARM ENABLE
ALARM STATUS
ADDRESS
DECODE
TACH COUNT
GPIO STATUS
COUNT TIME
CONFIGURE
INTERFACE
FAN SPEED
SMBus/I
GPIO DEF
DAC
2
2
C
C-Compatible Interface
Slave Addresses
MAX6650
MAX6651
TACHOMETER
CONTROL
COUNT
LOGIC
8-BIT
DAC
V
REF
10kΩ
Table 1. Slave Address Decoding (ADD)
V
OFFSET
90kΩ
10kΩ
No connection (high-Z)
10kΩ resistor to GND
90kΩ
ADD
GND
V
CC
(FIGURE 5)
BLOCKS
GPIO
TACH0
GPIO0
GPIO1
OUT
FB
V
FAN
FULL ON
ALERT
= 5V OR 12V
ADDRESS
1001 000
1001 011
0011 011
0011 111
BINARY
FAN