MAX34441ETL+ Maxim Integrated Products, MAX34441ETL+ Datasheet - Page 11

• Manufacturer Part Number: MAX34441ETL+
• Description: Supervisory Circuits PMBUS 5-CH POW-SUPPLY MANAGER & INTELLIGENT FAN CONTLR
• Manufacturer: Maxim Integrated Products

Specifications of MAX34441ETL+

• Internal Hysteresis: Yes
• Operating Temperature Range: - 40 C to + 85 C
• Output Type: Push-Pull
• Number Of Voltages Monitored: 5
• Watchdog: Yes
• Supply Voltage (max): 3.3 V
• Supply Current (typ): 8 A
• Maximum Power Dissipation: 2857.1 mW
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Package / Case: TQFN-40
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Note: All pins except V
and reset. After device reset, the weak pullup is removed, and the pin is configured as input or output.
PIN
20
22
23
24
25
26
27
28
29
30
31
32
33
34
35
37
38
39
40
—
A0/MUXSEL
CONTROL
TACHSEL
PMBus 5-Channel Power-Supply Manager
REG18
REG25
A1/PG/
PSEN3
PSEN2
PSEN1
PSEN0
FAULT
ALERT
NAME
PWM3
PWM2
PWM1
PWM0
RS+5
RS-5
SDA
SCL
EP
DD
, V
SS
PWM Margin Output #3. High impedance when the margining is disabled. A 100% duty cycle implies
this pin is continuously high.
Regulator for Low-Voltage Digital Circuitry. Bypass REG18 to V
not connect other circuitry to this pin.
Power-Supply Enable Output #3. Programmable through MFR_MODE for either active high or active
low and either open drain or CMOS push-pull.
PWM Margin Output #2. High impedance when the margining is disabled. A 100% duty cycle implies
this pin is continuously high.
Power-Supply Enable Output #2. Programmable through MFR_MODE for either active high or active
low and either open drain or CMOS push-pull.
PWM Margin Output #1. High impedance when the margining is disabled. A 100% duty cycle implies
this pin is continuously high.
Power-Supply Enable Output #1. Programmable through MFR_MODE for either active high or active
low and either open drain or CMOS push-pull.
PWM Margin Output #0. High impedance when the margining is disabled. A 100% duty cycle implies
this pin is continuously high.
Regulator for Analog Circuitry. Bypass REG25 to V
other circuitry to this pin.
Power-Supply Enable Output #0. Programmable through MFR_MODE for either active high or active
low and either open drain or CMOS push-pull.
I
I
SMBus Address 0 Input/Multiplexer Control Output. This dual-function pin is sampled on device
power-up to determine the SMBus address; connect a 100kI resistor from this pin to either V
V
current selector for an external analog multiplexer. MUXSEL is low for voltage measurements and
high for current measurements.
Active-Low, Open-Drain Fault Input/Output. This pin is asserted when one or more of the power supplies
in a global group are shut down due to a fault condition. Also, this pin is monitored and, when it is
asserted, all power supplies in a global group are shut down. This pin is used to provide hardware
control for power supplies in a global group across multiple devices. This output is unconditionally
deasserted when RST is asserted or the device is power cycled. This pin has a 50Fs deglitch filter.
Device Enable. Option through ON_OFF_CONFIG for active-low or active-high power-supply control.
This pin has a 50Fs deglitch filter.
SMBus Address 1 Input/Power-Good Output. This triple-function pin is sampled on device power-
up to determine the SMBus address; connect a 100kI resistor from this pin to either V
set the address. After device power-up, this pin becomes an output that transitions high when all
the enabled power supplies are above their associated POWER_GOOD_ON thresholds. Alternately,
this pin can be programmed through MFR_MODE to select between two tachometers in dual-fan
applications.
Active-Low, Open-Drain Alert Output
Thermal Diode ADC Voltage Negative-Sense Input, Measurement Relative to RS+5
Thermal Diode ADC Voltage Positive-Sense Input, Measurement Relative to RS-5
Exposed Pad (Bottom Side of Package). Connect EP to V
2
2
, REG18, REG25, ADC, and the EP are high impedance with a 50µA pullup during device power-up
DD
C/SMBus-Compatible Input/Output
C/SMBus-Compatible Clock Input
to set the address. After device power-up, this pin becomes an output that acts as voltage/
and Intelligent Fan Controller
FUNCTION
SS
Pin Description (continued)
with 1FF and 10nF capacitors. Do not connect
SS
.
SS
with 1FF and 10nF capacitors. Do
SS
or V
SS
DD
or
to
11