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參數資料
型號: ADM1041AARQZ-REEL
廠商: ANALOG DEVICES INC
元件分類: 通信及網絡
英文描述: Secondary-Side Controller with Current Share and Housekeeping
中文描述: SPECIALTY TELECOM CIRCUIT, PDSO24
封裝: LEAD FREE, MO-137AE, QSOP-24
文件頁數: 28/56頁
文件大小: 991K
代理商: ADM1041AARQZ-REEL
ADM1041A
AC_OK
This output is true when either AC
SENSE
1 or AC
SENSE
2 is true
(configurable). It can be configured as an open-drain,
N-channel or P-channel MOSFET and as positive or negative
(inverted) logic. A pull-up or pull-down resistor is required.
This pin can be wire-OR’ed with the same pin on other
ADM1041As in the power supply. When the AC_OK pin is not
used as such, it can be configured as an analog input, MON5, or
as a voltage reference.
MON5
This is the alternative analog comparator function for the
AC_OK pin (Pin 18). The threshold is 2.5 V, and it has a
100 μA current source that allows hysteresis to be controlled by
adjusting the external source resistance. It is ideal for an OTP
sensing circuit using a thermistor as part of a voltage divider.
The OTP condition can be configured to latch off the power
supply (similar to OVP) or to allow an autorestart (soft OTP).
See Figure 22.
Rev. 0 | Page 28 of 56
In Figure 22, MON2 and MON3 are configured to monitor a
negative 12 V rail. MON2 is configured as negative-going OVP,
and MON3 is configured as positive-going UVP. The 5 V power
rail is used for bias voltage.
18
10
16
7
1
MON2
V
CC
+5V
–12V
MON3
THERMISTOR
MON5
0
Figure 22. Example of MON Pin Configuration
1.25V
1.5V
2.5V
OCP
2.5V
MON5
MON1
OVP
UVP
ACOK
ORFETOK
SHAREOK
RESET
V
DD
OK
V
DD
OV
PENOK
MON2
MON3
MON4
PSON
CLOCK
AC_OK
DC_OK
SERIAL
INTERFACE
CONFIGURE
I/Os
STATUS
(READ
REGISTERS)
PWRON
CONTROL
LINES
CBD
PEN
PEN
SCL
CS
OCP
OTP/
MON5
MON1
MON2
MON3
MON4
PSON
AC_OK
DC_OK
CBD/ALERT
PEN
SDA/
PS
ON
LINK
SCL/
AC_OKLink
ADD0
OVP
UVP
ACOK
ORFETOK
SHAREOK
V
DD
OV
PENOK
V
DD
OK
RESET
9
18
10
16
17
16
18
17
11
12
15
13
14
CONFIGURE
(WRITE
REGISTERS)
CONTROL
REGISTERS
GENERAL
LOGIC
0
Figure 23. Block Diagram of Protection and General Logic
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ADM1041ARQ-2 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:
ADM1041ARQ-REEL 制造商:AD 制造商全稱:Analog Devices 功能描述:Secondary-Side Controller with Current Share and Housekeeping
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