SMM605
Preliminary Information
PIN DESCRIPTIONS (Cont.)
Pin
Pin
Pin Name
FILT_CAP
Pin Description
Number Type
External capacitor input used to filter VMX inputs. . This provides an RC filter
IN
15
where R = 1kΩ.
IN
VREF_CNTL
SDA
Voltage reference input used for DC output control and margining.
Bi-directional I2C data line.
14
1
I/O
IN
SCL
I2C clock line.
2
The address pin is biased either to VDD_CAP or GND.
When
IN
IN
A2
communicating with the SMM605 over the 2-wire bus A2 provides a
mechanism for assigning a unique bus address.
3
Programmable active high/low input. The START input is used solely for
enabling Active Control and/or margining.
START
4
7
Programmable active high/low open drain output signals indicating when all
programmed power supplies have reached their preprogrammed setpoints.
OUT
NC
READY
Leave the NC pins floating.
No Connect
PACKAGE AND PIN CONFIGURATION
48 LEAD TQFP
SDA
SCL
A2
1
2
3
36
35
VMB
TRIM_CAPC
34 TRIMC
START
GND
GND
READY
NC
4
5
6
7
33
32
31
NC
NC
VMC
30
29
28
TRIM_CAPD
TRIMD
NC
8
NC
9
NC
10
11
12
27
26
25
NC
NC
VMD
TRIM_CAPE
GND
Summit Microelectronics, Inc
2064 1.1 09/16/03
5
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
