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SMM764FCR7 데이터시트(PDF) 6 Page - Summit Microelectronics, Inc.

부품명 SMM764FCR7
상세설명  Four-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link?
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제조업체  SUMMIT [Summit Microelectronics, Inc.]
홈페이지  http://www.summitmicro.com
Logo SUMMIT - Summit Microelectronics, Inc.

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SMM764
Preliminary Information
Summit Microelectronics, Inc
2098 1.1 6/29/2005
6
Pin
Number
Pin
Type
Pin Name
Pin Description
13
I/O
SEQ_LINK
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.
14
I/O
VREF
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.
15
CAP
FILT_CAP
FILT_CAP (Filter Capacitor) is an external capacitor input used to filter VMX
inputs.
16,17,
18,20,
21,22,
23,25
NC
No Connect
Leave open, do not connect. These pins must be left floating.
41,36,
31,26
IN
VMX
VMX (Voltage Monitor) pins are analog inputs. These pins are normally
attached to the positive converter sense line, VMA through VMD.
42,37,
32,27
CAP
CAPX
External capacitor input used to filter the VMX inputs to the 10-bit ADC, CAPA
through CAPD. This provides an RC filter where R = 25kΩ..
43,38,
33,28
OUT
PUPX
PUPX (Power Up Permitted) pins are programmable active high/low open
drain converter enable output, PUPA through PUPD.
44,39,
34,29
OUT
TRIMX
Output voltage used to control the output of DC/DC converters, TRIMA
through TRIMD.
45,40,
35,30
CAP
TRIM_CAPX
TRIM_CAPX is an analog output pin used to control the output of DC/DC
converters. If the ADOC/margining functionality is not used on a channel the
associated TRIM_CAPX pin should be left floating. There are 4 TRIM_CAPX
pins, TRIM_CAPA through TRIM_CAPD.
46
PWR
VDD
Power supply of the part
47
PWR
12VIN
12VIN (12 Volt Input) is a power supply input internally regulated to either
3.6V or 5.5V.
48
CAP
VDD_CAP
VDD_CAP ( VDD Capacitor) is an external capacitor input used to filter the
internal supply.
PIN DESCRIPTIONS (Cont.)


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