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參數(shù)資料
| 型號(hào)： | MAX861MJA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 50mA, Frequency-Selectable, Switched-Capacitor Voltage Converters |
| 中文描述： | SWITCHED CAPACITOR CONVERTER, 250 kHz SWITCHING FREQ-MAX, CDIP8 |
| 封裝： | 0.300 INCH, CERDIP-8 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 142K |
| 代理商： | MAX861MJA |
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
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
%
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_I/E
MAX86_M
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