Rainbow Electronics MAX34440 - Manual (Page 12)

PMBus 6-Channel Power-Supply Manager
MAX34440
12
Block Diagram
Note: All pins except V DD , V SS , REG18, REG25, ADC, and the EP are high impedance with a 50µA pullup during device power-up
and reset. After device reset, the weak pullup is removed, and the pin is configured as input or output.
Pin Description (continued)
ADC
TEMP
SENSOR
FLASH RAM
A1/PG
A0/MUXSEL
MU
X
MSDA
V SS
V SS
V SS
V DD
REG18
REG25
MSCL
SDA
SCL
ALERT
FAULT
RST
CONTROL
POWER
CONTROL
2.5V
VREG
1.8V
VREG
4MHz
OSCILLATOR
SMBus
MASTER
INTERFACE
SMBus
SLAVE
INTERFACE
16-BIT
MAXQ
RISC CORE
SYSTEM
CONTROL
SIGNALS
PULSE-
WIDTH
MODULATOR
PWM0
PWM1
PWM2
PWM3
PWM4
PWM5
PSEN0
PSEN1
PSEN2
PSEN3
PSEN4
RS+0
RS-0
RS+1
RS-1
RS+2
RS-2
RS+3
RS-3
RS+4
RS-4
RS+5
RS-5
POWER-
SUPPLY
OUTPUT
ENABLES
PSEN5
MAX34440
PIN NAME FUNCTION
39 RS-5 Ground Reference for ADC5 Voltage Measurement
40 RS+5 Power-Supply ADC Voltage-Sense Input, Measurement Relative to RS-5
— EP Exposed Pad (Bottom Side of Package). Connect EP to V SS .