參數(shù)資料
型號： MAX1994ETM
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Dual Step-Down Controllers Plus Linear- Regulator Controller for Notebook Computers
中文描述： DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CQCC48
封裝： 7 X 7 MM, 0.80 MM HEIGHT, THIN, QFN-48
文件頁數(shù)： 33/49頁
文件大?。?/td> 983K
代理商： MAX1994ETM
M
Dual Step-Down Controllers Plus Linear-
Regulator Controller for Notebook Computers
______________________________________________________________________________________
33
Table 4. BUCK1 and BUCK2 Operating Mode Truth Table
OVP
X
Enabled
Disabled
Enabled
Disabled
X
Enabled
Disabled
X
SKP1/
SDN
SKP2/
SDN
GND
V
CC
V
CC
GND
GND
V
CC
>10.8V
>10.8V
>10.8V
DL1
DL2
MODE
PGOOD
V
CC
GND
GND
GND
GND
V
CC
GND
GND
V
CC
HIGH
Switching
Switching
HIGH
HIGH
Switching
Switching
Switching
Switching
Switching
HIGH
LOW
HIGH
LOW
Switching
HIGH
LOW
Switching
BUCK2
BUCK1
BUCK1
Shutdown
Shutdown
Both in skip mode
BUCK1 no-fault test mode
BUCK1 no-fault test mode
No-fault test mode
LOW
Monitor BUCK1 only
Monitor BUCK1 only
LOW
LOW
Monitor both
Monitor BUCK1 only
Monitor BUCK1 only
Monitor both
X
>10.8V
Float
Switching
Switching in
forced PWM
mode
No-fault test mode
Monitor both
Enabled
Float
GND
Switching in
forced PWM
mode
HIGH
BUCK1 in forced PWM
mode
Monitor BUCK1 only
Disabled
Float
GND
Switching in
forced PWM
mode
LOW
BUCK1 in forced PWM
mode
Monitor BUCK1 only
X
Float
V
CC
Switching in
forced PWM
mode
Switching
BUCK1 in forced PWM
mode, BUCK2 in skip
mode
Monitor both
X
Float
Float
Switching in
forced PWM
mode
Switching in
forced PWM
mode
BUCK1 and BUCK2 in
forced PWM Mode
Monitor both
X
GND
Float
HIGH
Switching in
forced PWM
mode
BUCK1 off, BUCK in
forced PWM mode
LOW
X
V
CC
Float
Switching
Switching in
forced PWM
mode
BUCK1 in skip mode,
BUVK2 in forced PWM
mode
Monitor both
Enabled
V
CC
or
float
V
CC
or
float
HIGH
HIGH
OVP and UVP faults
LOW
Disabled
V
CC
or
float
V
CC
or
float
HIGH
HIGH
UVP faults only
LOW
X = Don
’
t care.
inputs S0 and S1, which are four-level digital inputs
(Table 6). All code transitions (even those asking for the
exact same code) activate the slew-rate controller. In
other words, up-going or down-going transitions from one
code to another, soft-start and soft-stop are all handled in
the same way.
BUCK1 Output-Voltage Offset Control
(SUS, PERF,
DPSLP,
and OFS_)
The MAX1816/MAX1994 support three independent off-
sets to the voltage-positioned load line. The offsets are
adjusted using resistive voltage-dividers at the
OFS0
–
OFS2 inputs (see Figure 10). For inputs from 0 to
0.8V, a negative offset is added to the output that is
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1994ETM+ 功能描述:DC/DC 開關(guān)控制器 Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1994ETM+T 功能描述:DC/DC 開關(guān)控制器 Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1994ETM-T 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1994EVKIT 功能描述:DC/DC 開關(guān)控制器 Evaluation Kit for the MAX1816 MAX1980 MAX1994 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX1995EGI 功能描述:顯示驅(qū)動器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel
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