SMM764 SUMMIT Microelectronics, Inc:, SMM764 Datasheet - Page 6

• Manufacturer Part Number: SMM764
• Description: Four-channel Active Dc Output Controller, Monitor, Marginer And Sequencer With Sequence-link
• Manufacturer: SUMMIT Microelectronics, Inc:

Summit Microelectronics, Inc
Pin
Number
13
14
15
16,17,
18,20,
21,22,
23,25
41,36,
31,26
42,37,
32,27
43,38,
33,28
44,39,
34,29
45,40,
35,30
46
47
48
PIN DESCRIPTIONS (Cont.)
Pin
Type
I/O
I/O
CAP
NC
IN
CAP
OUT
OUT
CAP
PWR
PWR
CAP
Pin Name
SEQ_LINK
VREF
FILT_CAP
No Connect
VM
CAP
PUP
TRIM
TRIM_CAP
VDD
12VIN
VDD_CAP
X
X
X
X
X
Pin Description
SEQ_LINK (Sequence-Link™) is an open drain bi-directional pin. This pin
should be attached to other Sequence-Link devices, during linked operation.
SEQ_LINK must be pulled high through an external pull-up resistor when
multiple Sequence-Link devices are used. When the SMM764 is not used
with another Sequence-Link device, SEQ_LINK should be tied directly to
ground.
VREF (Voltage Reference) is a bi-directional analog pin. VREF is used for
Active DC Output Control and margining. VREF can be programmed to
output the internal 1.25V reference, or accept an external reference. VREF is
also used as a reference for the ADC.
FILT_CAP (Filter Capacitor) is an external capacitor input used to filter VM
inputs.
Leave open, do not connect. These pins must be left floating.
VM
attached to the positive converter sense line, VM
External capacitor input used to filter the VM
through CAP
PUP
drain converter enable output, PUP
Output voltage used to control the output of DC/DC converters, TRIM
through TRIM
TRIM_CAP
converters. If the ADOC/margining functionality is not used on a channel the
associated TRIM_CAP
pins, TRIM_CAP
Power supply of the part
12VIN (12 Volt Input) is a power supply input internally regulated to either
3.6V or 5.5V.
VDD_CAP ( VDD Capacitor) is an external capacitor input used to filter the
internal supply.
X
X
(Voltage Monitor) pins are analog inputs. These pins are normally
(Power Up Permitted) pins are programmable active high/low open
X
D
2098 1.1 6/29/2005
D.
. This provides an RC filter where R = 25kΩ..
is an analog output pin used to control the output of DC/DC
A
through TRIM_CAP
X
pin should be left floating. There are 4 TRIM_CAP
A
through PUP
D
.
X
inputs to the 10-bit ADC, CAP
A
D.
through VM
Preliminary Information
D.
SMM764
X
A
A
X
6