SMM605
Preliminary Information
PIN DESCRIPTIONS (Cont.)
Pin
Number
15
14
1
2
3
Pin
Type
IN
IN
I/O
IN
IN
Pin Name
FILT_CAP
VREF_CNTL
SDA
SCL
A2
Pin Description
External capacitor input used to filter VM
X
inputs. . This provides an RC filter
where R = 1kΩ.
Voltage reference input used for DC output control and margining.
Bi-directional I
2
C data line.
I
2
C clock line.
The address pin is biased either to VDD_CAP or GND.
When
communicating with the SMM605 over the 2-wire bus A2 provides a
mechanism for assigning a unique bus address.
Programmable active high/low input. The START input is used solely for
enabling Active Control and/or margining.
Programmable active high/low open drain output signals indicating when all
programmed power supplies have reached their preprogrammed setpoints.
Leave the NC pins floating.
4
7
IN
OUT
NC
START
READY
No Connect
PACKAGE AND PIN CONFIGURATION
48 LEAD TQFP
TRIM_CAPA
TRIM_CAPB
VDD_CAP
TRIMB
TRIMA
12VIN
VDD
VMA
NC
38
48
47
46
45
44
43
NC
42
NC
41
40
39
SDA
SCL
A2
START
GND
GND
READY
NC
NC
NC
NC
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
37
36
35
34
33
32
31
30
29
28
27
26
25
NC
VMB
TRIM_CAPC
TRIMC
NC
NC
VMC
TRIM_CAPD
TRIMD
NC
NC
VMD
TRIM_CAPE
VREF_CNTL
TRIM_CAPF
FILT_CAP
TRIMF
Summit Microelectronics, Inc
2064 1.1 09/16/03
TRIME
GND
VMF
VME
NC
NC
NC
NC
5
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
