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| 型號： | ADM1041ARQ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Secondary-Side Controller with Current Share and Housekeeping |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO24 |
| 封裝： | MO-137AE, QSOP-24 |
| 文件頁數(shù)： | 14/64頁 |
| 文件大小： | 1063K |
| 代理商： | ADM1041ARQ |
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ADM1041
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Rev. A | Page 14 of 64
ADM1041
TOP VIEW
(Not to Scale)
V
DD
1
V
LS
/C
S
–/FS
2
C
S
+
C
CMP
V
CMP
3
4
5
SHRO
SHRS+
SCMP
V
S
+
V
S
–/SHRS–
F
G
V
REF
/AC_OK/OTP/MON5
DC_OK/MON4
24
23
22
21
20
F
D
6
GND
7
ICT
8
PULSE/AC
SENSE
1/MON1
AC
SENSE
2/MON2
10
CBD/ALERT
11
9
PSON/MON3
19
18
17
16
PEN
12
ADD0
SDA/PS
ON
LINK
SCL/AC_OKLink
15
14
13
0
Figure 7. Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
1
V
DD
2
V
LS
/C
S
–/FS
Description
Positive Supply for the ASIC. Normal range is 4.5 V to 5.5 V. Absolute maximum rating is 6.5 V.
Inverting Differential Current Sense Input, Local Voltage Sense Pin, and OrFET Source. These three
functions are served by a common divider. The local voltage sense input is used for local overvoltage
and undervoltage sensing. This pin also provides an input to the false UV clamp that prevents
shutdown during an external load overvoltage condition. When supporting an OrFET circuit, this pin
represents the FET source and is the inverting input of a differential amplifier looking for the presence
of a reverse voltage across the FET, which might indicate a failure mode.
Noninverting Differential Current Sense Input. The differential sensitivity of C
S
+ and C
S
– is normally
around 10 mV to 40 mV at the input to the ASIC. Nulling any external divider offset is achieved by
injecting a trimmable amount of current into either the inverting or noninverting input of the second
stage of the current sense amplifier. A compensation circuit is used to ensure the amount of current
for zero-offset tracks the common-mode voltage. Nulling of any amplifier offset is done in a similar
manner except that it does not track the common-mode voltage.
Current Error Amplifier Compensation. This pin is the output of the current limit transconductance
error amplifier. A series resistor and a capacitor to ground are required for loop compensation.
Voltage Error Amplifier Compensation. This is the output of a voltage error transconductance
amplifier. Compensate with a series capacitor and resistor to ground. An external emitter-follower or
buffer is typically used to drive an optocoupler. Output voltage positioning may be obtained by
placing a second resistor directly to ground. Refer to Analog Devices applications notes on voltage
positioning.
A divider from the OrFET drain is connected here. A differential amplifier is then used to detect the
presence of a reverse voltage across the FET, which indicates a fault condition and causes the OrFET
gate to be pulled low.
Ground. This pin is double bonded for extra reliability. If the ground pin goes positive with respect to
the remote sense return (V
S
–) for a sustained period indicating that the negative remote sense line is
disconnected, PEN will be disabled.
Input for Current Transformer. The sensitivity of this pin is suitable for the typical 0.5 V to 1 V signal
that is normally available. If this function is enabled, the C
S
+ amplifier is disabled. This pin is also used
for extended SMBus addressing, i.e., pulled below ground to allow additional SMBus addresses.
Pulse Present, AC/Bulk Sense 1, or Monitor 1 Input.
PULSE: This tells the OrFET circuit that the voltage from the power transformer is normal. A peak hold
allows the OrFET circuit to pass through the pulse skipping that occurs with very light loads but turns
off the circuit about one second after the last pulse is recognized.
AC
SENSE
1: This sense function also uses the peak voltage on this pin to measure the bulk capacitor
voltage. If too low, AC_OK and DC_OK can warn of an imminent loss of power. Threshold level and
hysteresis can be trimmed. When not selected, AC
SENSE
1 defaults to true.
MON1: When MON1 is selected for this pin, its input is compared against a 1.25 V comparator that
could be used for monitoring a post regulated output; includes overvoltage, undervoltage, and
overtemperature conditions.
3
C
S
+
4
C
CMP
5
V
CMP
6
FD
7
GND
8
ICT
9
PULSE/AC
SENSE
1/MON1
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相關(guān)代理商/技術(shù)參數(shù) |
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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 |
| ADM1041ARQ-REEL7 | 功能描述:IC PWR SUP MON/LOAD SHARE 24QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| ADM1041ARQZ | 功能描述:IC PWR SUPP MON/LOAD SHAR 24QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| ADM1041ARQZ-REEL | 功能描述:IC SECONDARY SIDE CTRLR 24QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
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