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參數資料
| 型號： | MAX774 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Efficiency, Low I Q Inverting DC-DC Controllers(可調,高效率,低IQ值,DC-DC控制器) |
| 中文描述： | -5V/-12V/-15V或可調、高效率、低IQ、反相、DC-DC控制器 |
| 文件頁數： | 1/16頁 |
| 文件大?。?/td> | 204K |
| 代理商： | MAX774 |
_______________General Desc ription
The MAX774/MAX775/MAX776 inverting switching
regulators deliver high efficiency over three decades of
load current. A unique current-limited, pulse-
frequency-modulated (PFM) control scheme provides
the benefits of pulse-width modulation (high efficiency
with heavy loads), while using less than 100μA of sup-
ply current (vs. 2mA to 10mA for PWM converters). The
result is high efficiency over a wide range of loads.
These ICs also use tiny external components; their high
switching frequency (up to 300kHz) allows for less than
5mm diameter surface-mount magnetics.
The MAX774/MAX775/MAX776 accept input voltages from
3V to 16.5V, and have preset output voltages of
-5V, -12V, and -15V, respectively. Or, the output voltage
can be user-adjusted with two resistors. Maximum
V
- V
differential voltage is limited only by the break-
down voltage of the chosen external switch transistor.
These inverters use external P-channel MOSFET switch-
es, allowing them to power loads up to 5W. If less
power is required, use the MAX764/MAX765/MAX766
inverting switching regulators with on-board MOSFETs.
________________________Applic ations
LCD-Bias Generators
High-Efficiency DC-DC Converters
Battery-Powered Applications
Data Communicators
____________________________Features
o
85% Efficiency for 5mA to 1A Load Currents
o
Up to 5W Output Power
o
100μA Max Supply Current
o
5μA Max Shutdown Current
o
3V to 16.5V Input Range
o
-5V (MAX774), -12V (MAX775), -15V (MAX776),
or Adjustable Output Voltage
o
Current-Limited PFM Control Scheme
o
300kHz Switching Frequency
______________Ordering Information
Ordering Information continued on last page.
* Contact factory for dice specifications.
M
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low I
Q
Inverting DC-DC Controllers
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
1
2
3
4
5
8
7
6
MAX774
MAX775
MAX776
DIP/SO
TOP VIEW
GND
EXT
CS
V+
OUT
FB
SHDN
REF
__________________Pin Configuration
MAX774
OUTPUT
-5V
REF
SHDN
GND
V+
CS
EXT
OUT
ON/OFF
INPUT
3V TO 16V
P
FB
__________Typic al Operating Circ uit
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP
MAX774
CPA
MAX774CSA
MAX774C/D
MAX774EPA
MAX774ESA
MAX774MJ A
19-0191; Rev 1; 3/94
EVALUATION KIT
AVAILABLE
相關PDF資料 |
PDF描述 |
|---|---|
| MAX775 | -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ Inverting DC-DC Controllers |
| MAX776 | -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ Inverting DC-DC Controllers |
| MAX774MJA | -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ Inverting DC-DC Controllers |
| MAX774CPA | -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ Inverting DC-DC Controllers |
| MAX774CSA | -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ Inverting DC-DC Controllers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX774C/D | 功能描述:DC/DC 開關控制器 -5V or Adjustable High-Efficiency Low Iq Inverting DC-DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX774CPA | 功能描述:DC/DC 開關控制器 5/12/15/AdjV- Inv DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX774CPA+ | 制造商:Maxim Integrated Products 功能描述:Bulk 制造商:Maxim Integrated Products 功能描述:Inverting dc-dc PWM controller,MAX774CPA |
| MAX774CSA | 功能描述:DC/DC 開關控制器 5/12/15/AdjV- Inv DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX774CSA+ | 功能描述:DC/DC 開關控制器 5/12/15/AdjV- Inv DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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