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參數(shù)資料
| 型號： | MAX624 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual-Output, 1MHz DC-DC Boost Converter for PCMCIA Applications(升壓型，輸出電壓5V/12V/可調(diào),輸出電流200mA的DC-DC變換器) |
| 中文描述： | 雙輸出，1MHz的DC - DC升壓轉(zhuǎn)換器應(yīng)用為PCMCIA（升壓型，輸出電壓5V/12V /可調(diào)，輸出電流200毫安的直流變換器） |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 215K |
| 代理商： | MAX624 |
_______________General Desc ription
The MAX624 is a dual DC-DC converter intended for
size-constrained applications, such as power supplies
that must fit inside PCMCIA memory cards. At the heart
of the MAX624 are two boost-topology converters, plus
auxiliary functions including a start-up inrush surge-cur-
rent limiter and a power-on reset output with timer
(power-good signal). The MAX624 accepts input volt-
ages from 3V to 5.5V and generates two outputs: a
fixed 5V ±4% output at 200mA (guaranteed), and an
adjustable auxiliary output that is configurable for vari-
ous loads with an external power transistor. The auxil-
iary output is typically set to 12V ±2% for flash memory
applications, but can be adjusted via a resistor divider
from V
IN
to 30V or more.
The MAX624’s high switching frequency (1MHz)
reduces external component sizes. High-frequency
switching losses have minimal impact on efficiency,
which is 85% for the main 5V supply. Small ceramic fil-
ter capacitors, together with the soft-start function,
reduce start-up inrush current surges.
________________________Applic ations
PCMCIA Memory Cards
Solid-State Disk Drives
Host-Side PCMCIA Adapters
LCD Bias Power Supplies
____________________________Features
o
1MHz Switching Frequency for Small
Components
o
5V ±4% Boost Converter with Internal Power
Switch
o
Adjustable ±2% Output Boost Converter with
External Power Switch
o
Optional Inrush Surge-Current Limiting
o
40μA Shutdown Current
o
0.5mA Quiescent Current
o
3.0V to 5.5V Input Range
o
85% Main 5V SMPS Efficiency
o
Independent Soft-Start for Each Supply
o
Reset Output with 2.8V ±3% Threshold and
4ms Timeout
M
Dual-Output, 1MHz DC-DC Boost Converter
for PCMCIA Applic ations
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
VIN
LX5
PGND
FB5
GND
REF
RESET
EXT
TOP VIEW
MAX624
DA
CSA
VA
FBA
SSA
SS5
ONA
SHDN
SO
__________________Pin Configuration
MAX624
SHDN
LX5
DA
AUXILIARY
OUTPUT
12V
80mA
(AS SHOWN)
4.7
μ
F
5
μ
H
N
4.7
μ
F
2.2
μ
F
0.22
MAIN
OUTPUT
5V
200mA
INPUT 3V TO5.5V
FB5
AUX. ON/OFF
SHUTDOWN
EXT
VIN
CSA
VA
FBA
500k
100k
5
μ
H
0.1
μ
F
3300pF
GND
REF
ONA
10pF
__________Typic al Operating Circ uit
19-0382; Rev 1; 8/95
PART
MAX624C/D
MAX624ISE
*Dice are tested at T
A
= +25°C. Contact factory for dice
specifications.
-25°C to +85°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
Dice*
16 Narrow SO
______________Ordering Information
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6241 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage References |
| MAX6241ACPA | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| MAX6241ACPA+ | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 2.5V/+4.096V/5V Voltage Ref RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| MAX6241ACSA | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| MAX6241ACSA+ | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 2.5V/+4.096V/5V Voltage Ref RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
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