參數(shù)資料
型號： ML4900
廠商： Fairchild Semiconductor Corporation
英文描述： High Current Synchronous Buck Controller For DC/DC conversion(用于DC/DC變換的大電流同步補償控制器（5V到2.1V～3.5V變換）)
中文描述： 高電流同步降壓控制器，用于直流/直流轉(zhuǎn)換（用于直流/直流變換的大電流同步補償控制器（5V的到大于2.1V?3.5V的變換））
文件頁數(shù)： 3/8頁
文件大?。?/td> 232K
代理商： ML4900
ML4900
3
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V
DD
= 12V, PROTECT =
SHDN
= 5V, T
A
= Operating Temperature Range (Note 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
REFERENCE
V
REF
Output Voltage
3.51
3.535
3.56
V
Line Regulation
11V < V
DD
< 13V
0.5
mV/V
UV LOCKOUT
V
DD
Start-up Threshold
10.2
10.5
10.8
V
V
DD
Hysteresis
300
450
600
mV
PROTECT (5V) Start-up Threshold
4.25
4.4
4.5
V
PROTECT (5V) Hysteresis
400
450
500
mV
SHUTDOWN
Input Low Voltage
0.8
V
Input High Voltage
2.0
V
Delay to Output
50
ns
POWER GOOD COMPARATOR
Output Voltage in Regulation
5k
W
pull-up to 5V
4.8
V
Output Voltage out of Regulation
V
FB
< 90% V
DAC
or >110% V
DAC
0.4
V
Output Voltage in Shutdown
SHDN
= 0V, 5k
W
pull-up to 5V
0.4
V
BUCK REGULATOR
Oscillator Frequency
160
200
230
kHz
Duty Cycle Ratio
DAC (D3-D0) Code = 0100,
V
FB
= 0V
85
95
%
DAC (D3-D0) Code = 0100,
V
FB
> 3.193V
0
%
DAC (D3-D0) Input Low Voltage
0.8
V
DAC (D3-D0) Input High Voltage
2.0
V
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.
V
DD..........................................................................................
13.5V
Peak Driver Output Current .......................................±2A
V
FB
Voltage....................................... GND - 0.3V to 5.5V
I
SENSE
Voltage ................................... GND - 0.5V to 5.5V
All Other Analog Inputs ..........GND - 0.3V to V
DD
+ 0.3V
SHDN
Input Current..............................................100
m
A
Junction Temperature ..............................................150oC
Storage Temperature Range...................... –65oC to 150oC
Lead Temperature (Soldering, 10 sec) ......................260oC
Thermal Resistance (
q
JA
)
16-Pin Narrow SOIC ...................................... 100oC/W
20-Pin TSSOP................................................. 143oC/W
OPERATING CONDITIONS
Temperature Range........................................ 0oC to 70oC
V
DD
Range...............................................11.4V to 12.6V
PROTECT (5V Supply) Range....................4.75V to 5.25V
相關PDF資料
PDF描述
ML4901 High Current Synchronous Buck Controller For DC/DC conversion(用于DC/DC變換的大電流同步補償控制器（12V到2.1V～3.5V變換）)
ML4902 High Current Synchronous Buck Controller For DC/DC conversion(用于DC/DC變換的大電流同步補償控制器（5V到1.8V～3.5V變換）)
ML4903 High Current Synchronous Buck Controller For DC/DC conversion(用于DC/DC變換的大電流同步補償控制器（12V到1.8V～3.5V變換）)
ML4950 Adjustable Output, Low Current Single Cell Boost Regulator with Detect(帶低電檢測電路的輸出可調(diào)、低電流單節(jié)電池上電升壓穩(wěn)壓器)
ML4961 Adjustable Output Low Voltage Boost Regulator with Detect(帶低電檢測電路的輸出可調(diào)、低電流單節(jié)電池上電升壓穩(wěn)壓器)
相關代理商/技術參數(shù)
參數(shù)描述
ML4900CS 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:High Current Synchronous Buck Controller
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ML4901CT 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:High Current Synchronous Buck Controller
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