參數(shù)資料
型號(hào)： MAX861
廠商： Maxim Integrated Products, Inc.
英文描述： 50mA, Frequency-Selectable, Switched-Capacitor Voltage Converters(50mA,高達(dá)250KHz的振蕩頻率,電荷泵電壓轉(zhuǎn)換器)
中文描述： 50mA、頻率可選的開(kāi)關(guān)電容電壓變換器
文件頁(yè)數(shù)： 3/12頁(yè)
文件大小： 116K
代理商： MAX861
M
50mA, Frequenc y-S elec table,
S witc hed-Capac itor Voltage Converters
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(Typical Operating Circuit (Inverter), V
DD
= +5V, –———N= V
DD
, FC = LV = GND, C1 = C2 = 10μF (Note 2), T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25°C.)
Note 2:
C1 and C2 are low-ESR (<0.2
) aluminum electrolytics. Capacitor ESR adds to the circuit’s output resistance. Using
capacitors with higher ESR may reduce output voltage and efficiency.
Specified output resistance includes the effect of the 0.2
ESR of the test circuit’s capacitors.
The switches are driven directly at the oscillator frequency, without any division.
At lowest frequencies, using 10μF capacitors gives worse efficiency figures than using the recommended capacitor
values in Table 3, due to larger 1 (f
s
x C1) term in R
OUT
.
Note 3:
Note 4:
Note 5:
–—H—D—N< 0.3V
MAX860
LV = GND
LV = open
No load
MAX860/MAX861, FC = V
DD
,
I
L
= 50mA to GND, C1 = C2 = 68μF
MAX860,
FC = V
DD
MAX861,
FC = V
DD
MAX861
FC < 4V
CONDITIONS
μA
10
Shutdown Supply Current
1
V
0.3
V
IL
–———NThreshold
1.2
V
IH
2.5
%
99
99.9
Voltage-Conversion Efficiency
%
87
Power Efficiency (Note 5)
88
92
93
96
80
8
60
160
130
13
100
250
-2
30
50
3
6
90
93
93
96
kHz
f
S
Switching Frequency
(Note 4)
μA
-4
I
FC
FC Current (from V
DD
)
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
No load, V
OUT
= -4V
μs
500
Time to Exit Shutdown
FC = V
DD
FC = GND
FC = OUT
FC = V
DD
FC = GND
FC = OUT
R
L
= 2k
from V
DD
to OUT
R
L
= 1k
from OUT
to GND
R
L
= 2k
from V
DD
to OUT
R
L
= 1k
from OUT
to GND
MAX86_C/E
MAX86_M
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX8610ETD+ 制造商:Maxim Integrated Products 功能描述:
MAX8610ETM+ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX8611ETM+ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX8611ETM+TW 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX8611VETM+ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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