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參數(shù)資料
| 型號(hào)： | MAX845 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Isolated Transformer Driver for PCMCIA Applications(750mW,隔離變壓器驅(qū)動(dòng)器) |
| 中文描述： | 隔離型、變壓器驅(qū)動(dòng)器，適用于PCMCIA設(shè)計(jì) |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 230K |
| 代理商： | MAX845 |
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
_______________General Desc ription
The MAX845 provides an isolated power supply small
enough to fit in thin PCMCIA cards and space-sensitive
applications. It drives a low-profile center-tapped trans-
former primary from a 5V or 3.3V DC power supply. The
secondary can be wound to provide any isolated posi-
tive or negative voltage at powers up to 750mW.
The MAX845 consists of an oscillator followed by a tog-
gle flip-flop. The flip-flop generates two 50% duty-cycle
square waves, which are complementary at half the
oscillator frequency (450kHz, min). These two signals
drive the ground-referenced N-channel power switch-
es. Internal circuitry ensures break-before-make action
between the two switches.
A low-power shutdown disables both the switches and
the oscillator, reducing power consumption. An evalua-
tion kit (MAX845EVKIT-MM) is available to evaluate low-
profile 5V 40mA and 5V 100mA applications.
________________________Applic ations
PCMCIA Modem Cards
Isolated Data Acquisition
Isolated Interface Power Supply
Noise-Immunity Communications Interface
Bridging Ground Differences
Medical Equipment
Process Control
Low-Power LAN Networks
____________________________Features
o
Transformer Driver for Ultra-Thin 5V-μs Transformers
o
Isolated DC-to-DC Power Supply for PCMCIA
Applications
o
450kHz Minimum Switching Frequency
o
Ultra-Low Input Supply Current Ripple
o
Single +5V or +3.3V Supply
o
5μW Low-Power Shutdown Mode
o
8-Pin SO and μMAX Packages
o
Low Output Ripple Permits Miniature Output
Capacitors
M
Isolated Transformer Driver
for PCMCIA Applic ations
________________________________________________________________ Maxim Integrated Products
1
1
2
3
4
8
7
6
5
D2
GND2
V
CC
N.C.
SD
FS
GND1
D1
SO/
μ
MAX
TOP VIEW
MAX845
__________________Pin Configuration
MAX845
D1
D2
FS
GND1
GND2
V
CC
1
8
4
6
2
7
3
V
IN
SD
FREQUENCY
SELECT
C2
C1
C3
5V @ 150mA
OUTPUT
5V
ON / OFF
T1
CR2
CR1
__________Typic al Operating Circ uit
19-0372; Rev 3; 8/96
PART
MAX845C/D
MAX845ESA
MAX845EUA
*Contact factory for dice specifications.
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
Dice*
8 SO
8 μMAX
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
______________Ordering Information
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| MAX845C/D | 功能描述:功率驅(qū)動(dòng)器IC Isolated Transformer Driver PCMCIA RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX845C/D+ | 功能描述:功率驅(qū)動(dòng)器IC RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX845CSA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX845ESA | 功能描述:功率驅(qū)動(dòng)器IC RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX845ESA/GH9 | 功能描述:功率驅(qū)動(dòng)器IC RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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