參數(shù)資料
型號(hào)： MAX1791EUB
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： High-Efficiency, 10-Pin レMAX, Step-Down Controllers for Notebooks
中文描述： SWITCHING CONTROLLER, 328 kHz SWITCHING FREQ-MAX, PDSO10
封裝： MICRO MAX PACKAGE-10
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 391K
代理商： MAX1791EUB
General Description
The MAX1762/MAX1791 PWM step-down controllers
provide high efficiency, excellent transient response,
and high DC output accuracy needed for stepping
down high-voltage batteries to generate low-voltage
CPU core, I/O, and chipset RAM supplies in notebook
computers and PDAs.
Maxim’s proprietary Quick-PWM pulse-width modula-
tor is a free-running constant on-time type with input
feed-forward. Its high operating frequency (300kHz)
allows small external components to be utilized in PC
board area-critical applications such as subnotebook
computers and smart phones. PWM operation occurs
at heavy loads, and automatic switchover to pulse-skip-
ping operation occurs at lighter loads. The external
high-side P-channel and low-side N-channel MOSFETs
require no bootstrap components. The MAX1762/
MAX1791 are simple, easy to compensate, and do not
have the noise sensitivity of conventional fixed-frequen-
cy current-mode PWMs.
These devices achieve high efficiency at a reduced
cost by eliminating the current-sense resistor found in
traditional current-mode PWMs. Efficiency is further
enhanced by their ability to drive synchronous-rectifier
MOSFETs. The MAX1762/MAX1791 come in a 10-pin
μMAX package and offer two fixed voltages (Dual
Mode) for each device, 1.8V/2.5V/adj (MAX1762) and
3.3V/5.0V/adj (MAX1791).
________________________Applications
Notebooks
Subnotebooks
Digital Cameras
1.8V/2.5V Logic
and I/O Supplies
Typical Operating Circuit
Handy-Terminals
PDAs
Smart Phones
Features
o
High Operating Frequency (300kHz)
o
No Current-Sense Resistor
o
Accurate Current Limit
o
±1% Total DC Error over Line and During
Continuous Conduction
o
Dual Mode Fixed Output
1.8V/2.5V/adj (MAX1762)
3.3V/5.0V/adj (MAX1791)
o
0.5V to 5.5V Output Adjust Range
o
5V to 20V Input Range
o
Automatic Light-Load Pulse Skipping Operation
o
Free-Running On-Demand PWM
o
Foldback Mode UVLO
o
PFET/NFET Synchronous Buck
o
4.65V at 25mA Linear Regulator Output
o
5μA Shutdown Supply Current
o
230μA Quiescent Supply Current
o
10-Pin μMAX Package
M
High-Efficiency, 10-Pin μMAX, Step-Down
Controllers for Notebooks
________________________________________________________________
Maxim Integrated Products
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
19-1923; Rev 0; 1/01
Ordering Information
TEMP. RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
Pin Configuration
PART
PIN-PACKAGE
10 μMAX
10 μMAX
MAX1762
EUB
MAX1791
EUB
FB
GND
CS
DH
VP
DL
OUT
REF
SHDN
V
(5V TO 20V)
V
1.8V/3.3V
VL
MAX1762
MAX1791
1
2
3
4
5
10
9
8
7
6
DH
CS
DL
OUT
FB
REF
VL
MAX1762
MAX1791
μ
MAX
TOP VIEW
GND
SHDN
VP
Quick-PWM, Dual Mode, and Foldback Mode are a trade-
marks of Maxim Integrated Products.
相關(guān)PDF資料
PDF描述
MAX1792 500mA Low-Dropout Linear Regulator in レMAX
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1791EUB+ 功能描述:DC/DC 開關(guān)控制器 Step-Down for Notebook 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
MAX1791EUB+ 制造商:Maxim Integrated Products 功能描述:CONTROLLER ((NW))
MAX1791EUB+T 功能描述:DC/DC 開關(guān)控制器 Step-Down for Notebook 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
MAX1791EUB-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
MAX1791EVKIT 功能描述:DC/DC 開關(guān)控制器 Evaluation Kit for the MAX1791 MAX1762 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
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