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參數(shù)資料
| 型號： | ML4866 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 3.3V Output DC-DC Step-Down Converter(3.3V輸出的DC-DC步降變換器) |
| 中文描述： | 3.3V輸出的DC - DC降壓轉(zhuǎn)換器（3.3V的輸出的的DC - DC步降變換器） |
| 文件頁數(shù)： | 3/8頁 |
| 文件大小： | 128K |
| 代理商： | ML4866 |
ML4866
REV. 1.0 10/12/2000
3
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
IN...................................................................................................
7V
Voltage on any other pin .........GND - 0.3V to V
IN
+ 0.3V
Peak Switch Current (I
PEAK
).........................................2A
Average Switch Current (I
AVG
).....................................1A
Junction Temperature.............................................. 150oC
Storage Temperature Range .......................-65oC to 150oC
Lead Temperature (Soldering 10 Sec.)..................... 260oC
Thermal Resistance (
θ
JA
).................................... 160oC/W
OPERATING CONDITIONS
Temperature Range
ML4866CS................................................. 0oC to 70oC
ML4866ES .............................................. -20oC to 70oC
ML4866IS ............................................... -40oC to 85oC
V
IN
Operating Range ...................................3.5V to 6.5V
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V
IN
= 5V, L = 50μH, C
OUT
= 100μF, R
COMP
= 390k
, C
COMP
= 15nF,
T
A
= Operating Temperature Range (Note 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
REFERENCE
V
REF
Output Voltage
0 < I(V
REF
) < –5μA, I
OUT
= 0mA
1.22
1.25
1.27
V
PWM REGULATOR
f
OSC
Oscillator Initial Accuracy
I
OUT
= 200mA, T
A
= 25°C
100
115
165
kHz
Oscillator Total Variation
Line and Temp
90
130
185
kHz
Soft Start V
IN
to V
OUT
Delay
3
5
ms
BURST Burst Mode Threshold
250
400
mV
BURST PWM Mode Threshold
500
850
mV
BURST Bias Current
35
μA
Output Voltage
I
OUT
= 200mA
3.2
3.3
3.4
V
I
OUT
= 20mA,
BURST
= 0V
3.28
3.38
3.48
V
Line Regulation
V
IN
= 4V to 6.5V, T
A
= 25°C
±2
%
Load Regulation
I
OUT
= 100mA to 500mA,
T
A
= 25°C
±2.5
%
I
OUT
= 5mA to 100mA,
BURST
= 0V, T
A
= 25°C
±2.5
%
Temperature Stability
T
A
= -40°C to 85°C
±1
%
Total Variation
Line, Load, Temp
±5
%
SHUTDOWN
UVLO Startup Threshold
3.2
3.5
V
UVLO Shutdown Threshold
2.9
3.1
V
SHDN
Threshold
2
V
SHDN
Bias Current
–5
μA
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ML4866CS | 制造商:MICRO_LINEAR 功能描述: |
| ML4866ES | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:3.3V Output DC-DC Step-Down Converter |
| ML4866IS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:3.3V Output DC-DC Step-Down Converter |
| ML4869 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Medium Current Boost Regulator with Load Disconnect |
| ML4869CS-3 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Medium Current Boost Regulator with Load Disconnect |
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