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參數(shù)資料
| 型號： | MAX16047ETN |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers |
| 中文描述： | 12-Channel/8-Channel EEPROM的可編程系統(tǒng)的故障寄存器經(jīng)理非易失 |
| 文件頁數(shù)： | 54/62頁 |
| 文件大小： | 535K |
| 代理商： | MAX16047ETN |
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12-Channel/8-Channel EEPROM-Programmable
System Managers with Nonvolatile Fault Registers
54
______________________________________________________________________________________
M
Driving High-Side MOSFET Switches
The MAX16047/MAX16049 use external n-channel
MOSFET switches for voltage tracking applications. To
configure the part for closed-loop voltage tracking using
series-pass MOSFETs, configure up to four of the pro-
grammable outputs (EN_OUT1–EN_OUT4) of the
MAX16047/MAX16049 as closed-loop tracking outputs
and configure up to four of the GPIOs as sense-return
inputs (INS1–INS4). Connect the EN_OUT_ output to the
gate of an n-channel MOSFET, connect the source of the
MOSFET to the INS_ feedback input, and monitor the
drain side of the MOSFET with the corresponding MON_
input (see Figure 16). Both the input and the output must
be assigned to the same slot (see the Closed–Loop
Tracking section). Configure the power-up and power-
down slew rates in the configuration registers. To provide
additional control over power-down, enable the internal
100
Ω
pulldown resistors on the INS_ connections.
Up to six of the programmable outputs (EN_OUT1–
EN_OUT6) of the MAX16047/MAX16049 may be config-
ured as charge-pump outputs. In this case, they can
drive the gates of series-pass n-channel MOSFETS with-
out closed-loop tracking functionality. When configured
in this way, these outputs act as simple power switches
to turn on the voltage supply rails. Approximate the slew
rate, SR, using the following formula:
where I
CP
is the 6μA (typ) charge-pump source cur-
rent, C
GATE
is the gate capacitance of the MOSFET,
and C
EXT
is the capacitance connected from the gate
to ground. Power-down is not well controlled due to the
absence of the 100
Ω
pulldowns.
If more than six series-pass MOSFETs are required for
an application, additional series-pass p-channel
MOSFETS may be connected to outputs configured as
active-low open drain (Figure 17). Connect a pullup
resistor from the gate to the source of the MOSFET, and
ensure the absolute maximum ratings of the
MAX16047/MAX16049 are not exceeded.
SR
I
C
(
C
CP
GATE
EXT
=
+
)
MAX16047
MAX16049
V
CC
C
V
IN
GND
Figure 15. Power Circuit for Shutdown During Fault Conditions
MON_
EN_OUT_
INS_
V
IN
V
OUT
REFERENCE
RAMP
LOGIC
ADC MUX
V
TH_PG
100
Ω
GATE
DRIVE
Figure 16. Closed-Loop Tracking
MAX16047
MAX16049
V
OUT
D
S
G
R
MON_
EN_OUT_
V
IN
Figure 17. Connection for a p-Channel Series-Pass MOSFET
相關PDF資料 |
PDF描述 |
|---|---|
| MAX16049 | Hold function, Loop detection; Vin (V) max.: 24; Icc (mA) max.: 6.45; Fmax (kHz) max.: 400; Topr [Tjopr] (°C): -40 to +125; Remarks: Power factor collection; Package: DIP; Pin count: 16 |
| MAX16049ETN | Hold function, Loop detection; Vin (V) max.: 24; Icc (mA) max.: 6.45; Fmax (kHz) max.: 400; Topr [Tjopr] (°C): -40 to +125; Remarks: Power factor collection; Package: SOP; Pin count: 16 |
| MAX16048 | 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers |
| MAX16046 | 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers |
| MAX16050 | Voltage Monitors/Sequencer Circuits with Reverse-Sequencing Capability |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX16047ETN+ | 功能描述:監(jiān)控電路 12Ch EEPROM Prob System Manager RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX16047ETN+CB1 | 制造商:Maxim Integrated Products 功能描述:12-/8-CHANNEL SYSTEM MANAGEMENT ICS WITH NV FAULT MONITORING - Rail/Tube |
| MAX16047ETN+T | 功能描述:監(jiān)控電路 12Ch EEPROM Prob System Manager RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX16047ETN+TW | 功能描述:監(jiān)控電路 12-Channel EEPROM-Programmable System Manager with Nonvolatile Fault Registers RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX16047ETN+W | 功能描述:監(jiān)控電路 12-Channel EEPROM-Programmable System Manager with Nonvolatile Fault Registers RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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