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參數(shù)資料
| 型號： | 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)： | 5/12頁 |
| 文件大?。?/td> | 142K |
| 代理商： | MAX861MJA |
M
50mA, Frequenc y-S elec table,
S witc hed-Capac itor Voltage Converters
_______________________________________________________________________________________
5
90
70
80
0
0.33
MAX861
OUTPUT CURRENT vs. CAPACITANCE
HIGH-FREQUENCY MODE
M
CAPACITANCE (
μ
F)
O
4.7
40
20
1
2.2
22
60
10
10
30
50
V
IN
= +4.5V,
V
OUT
= -3.5V
V
IN
= +4.5V, V
OUT
= -4V
V
IN
= +3V, V
OUT
= -2.4V
V
IN
= +3V, V
OUT
= -2.7V
f
OSC
= 250kHz
FC = OUT
LV = GND
INVERTER MODE
80
70
0
0.33
MAX861
OUTPUT CURRENT vs. CAPACITANCE
MEDIUM-FREQUENCY MODE
M
CAPACITANCE (
μ
F)
O
4.7
40
20
1
2.2
22
60
10
10
30
50
V
IN
= +4.5V,
V
OUT
= -3.5V
V
IN
= +3V,
V
OUT
= -2.4V
V
IN
= +4.5V,
V
OUT
= -4V
V
IN
= +3V, V
OUT
= -2.7V
f
= 100kHz
FC = GND
LV = GND
INVERTER MODE
______________________________________________________________Pin Desc ription
____________________________Typic al Operating Charac teristic s (c ontinued)
(All curves generated using the inverter circuit shown in the Typical Operating Circuits with LV = GND and T
A
= +25°C, unless other-
wise noted. Test results also valid for doubler mode with LV = OUT and T
A
= +25°C. All capacitor values used are those recom-
mended in Table 3, unless otherwise noted. The output resistance curves represent the resistance of the device itself, which is R
O
in
the equation for R
OUT
shown in the Capacitor Selection section.)
INVERTER
DOUBLER
Doubled Positive Output
Flying-Capacitor Negative Terminal
Ground
Low-Voltage-Operation Input. Connect to OUT.
Active-Low Shutdown Input. Connect to GND pin if not
used. Connect to OUT to disable the charge pump.
Positive Input Supply
Flying-Capacitor Positive Terminal
Frequency Control, see Table 1
FUNCTION
Positive Input Supply
V
DD
8
Flying-Capacitor Negative Terminal
C1-
4
Negative Output
OUT
5
Low-Voltage-Operation Input. Connect to GND.
LV
6
Active-Low Shutdown Input. Connect to V
DD
if not
used. Connect to GND to disable the charge pump.
–———N
7
Ground
GND
3
Flying-Capacitor Positive Terminal
C1+
2
Frequency Control, see Table 1
FC
1
NAME
PIN
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