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參數(shù)資料
| 型號： | SMM465FR03 |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | 4-Channel Active DC Output Controller, Monitor, Marginer and Sequencer |
| 中文描述： | 4通道有源直流輸出控制器，監(jiān)視器，Marginer和音序器 |
| 文件頁數(shù)： | 4/30頁 |
| 文件大?。?/td> | 957K |
| 代理商： | SMM465FR03 |
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SMM465
Preliminary Information
Summit Microelectronics, Inc
2085 1.1 05/27/04
4
Pin
Number
Pin
Type
Pin Name
Pin Description
1
DATA
SDA
I
2
C Bi-directional data line
2
CLK
SCL
I
2
C Clock line
3
IN
A2
The address pin is biased either to VDD_CAP or GND. When
communicating with the SMM465 over the 2-wire bus A2 provides a
mechanism for assigning a unique bus address.
Programmable active high/low input. When asserted the RST output will be
go active. When de-asserted the RST output will go inactive immediately
after a reset timeout period (t
PRTO
) if there are no RST trigger sources active.
This timeout period makes it suitable to use a pushbutton for manual reset.
Programmable active high/low input signals the start of the power
sequencing. When asserted the part will sequence the supplies on and
when de-asserted the part will sequence the supplies off.
Note: The SMM465 does not monitor for faults during sequencing. The
PWR_ON/OFF pin is overridden by the I
C power on/off command. To get
the pin to work again requires the part be given an I
2
C 'Clear' command (see
page 16, “RESTART OF POWER-ON CASCADE SEQUENCING”).
Programmable active high/low input. Force shutdown is used to immediately
turn off all converter enable signals (PUP outputs) when a fault is detected.
Programmable active high/low open drain Fault output. Active when a
programmed fault condition exists on AIN1, AIN2, or the internal temperature
sensor.
Programmable active high/low open drain Healthy output. Active when all
programmed power supply inputs and monitored inputs are within OV and
UV limits.
Programmable active high/low open drain Reset output. Active when a
programmed fault condition exists on any power supply inputs or monitored
inputs or when MR is active. RST has a programmable timeout period with
options for 0.64ms, 25ms, 100ms and 200ms.
4
IN
MR
5
IN
PWR_ON/OFF
6
IN
FS
7
OUT
FAULT
8
OUT
HEALTHY
9
OUT
RST
10
IN
AIN1
General purpose monitored analog input
11
IN
AIN2
General purpose monitored analog input
12, 19,
24
GND
GND
Ground
13
IN
VREF_ADC
Voltage reference input used for A/D conversion where:
(4XVREF_ADC) = Full Scale (FS) for VM
A-F
and VDD
(12XVREF_ADC) = FS for 12VIN
(2XVREF_ADC) = FS for AIN1 and AIN2.
VREF_ADC can be connected to VREF_CNTL in most applications.
PIN DESCRIPTIONS
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