Rainbow Electronics MAX34441 - Manual (Page 10)

PMBus 5-Channel Power-Supply Manager
and Intelligent Fan Controller
MAX34441
10
Pin Description
Pin Configuration
PIN NAME FUNCTION
1 RS-4 Ground Reference for ADC4 Voltage Measurement
2, 21, 36 V SS Digital-Supply Return Node (Ground)
3 RS+4 Power-Supply ADC Voltage-Sense Input, Measurement Relative to RS-4
4 RS-3 Ground Reference for ADC3 Voltage Measurement
5 RS+3 Power-Supply ADC Voltage-Sense Input, Measurement Relative to RS-3
6 RS+0 Power-Supply ADC Voltage-Sense Input, Measurement Relative to RS-0
7 RS-0 Ground Reference for ADC0 Voltage Measurement
8 RS+1 Power-Supply ADC Voltage-Sense Input, Measurement Relative to RS-1
9 V DD Supply Voltage. Bypass V DD to V SS with a 0.1FF capacitor.
10 RS-1 Ground Reference for ADC1 Voltage Measurement
11 RS+2 Power-Supply ADC Voltage-Sense Input, Measurement Relative to RS-2
12 RS-2 Ground Reference for ADC2 Voltage Measurement
13 RST Reset Active-Low Input
14 MSDA Master I 2 C Data Input/Output. Open-drain output.
15 MSCL Master I 2 C Clock Output. Open-drain output.
16 PWM5
Fan PWM Output #5. CMOS push-pull output. Low when the fan is disabled. A 100% duty cycle
implies this pin is continuously high.
17 TACH5 Fan Tachometer Input
18 PWM4
PWM Margin Output #4. High impedance when the margining is disabled. A 100% duty cycle implies
this pin is continuously high.
19 PSEN4
Power-Supply Enable Output #4. Programmable through MFR_MODE for either active high or active
low and either open drain or CMOS push-pull.
TOP VIEW
35
36
34
33
12
11
13
V
SS
RS-3 RS+
3
RS+
0
RS-0
14
RS-4
PSEN1 PSEN2 PWM2 PWM0 REG25 PSEN0 PSEN3 REG18
1 2 4 5 6 7
27 28 29 30 26 24 23 22
CONTROL
V SS
PWM4
TACH5
PWM5
MSCL
RS+
4
PWM1
3
25
37 A1/PG/TACHSEL MSDA
38
39
40
RS-5
RS+5
RS-2
RS+2
EP
A0/MUXSEL
32
15
PSEN4 SCL
31
16
17
18
19
20 PWM3
RS+
1
V
DD
RS-1
V
SS
8 9 10
21
SDA
FAULT
ALERT RST
+
TQFN
(6mm × 6mm × 0.75mm)
MAX34441