參數(shù)資料
型號: MAX871EUK
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 穩(wěn)壓器
英文描述: Switched-Capacitor Voltage Inverters
中文描述: SWITCHED CAPACITOR CONVERTER, 775 kHz SWITCHING FREQ-MAX, PDSO5
封裝: SOT-23, 5 PIN
文件頁數(shù): 4/8頁
文件大?。?/td> 97K
代理商: MAX871EUK
_____________________Pin Desc ription
M
S witc hed-Capac itor Voltage Inverters
4
_______________________________________________________________________________________
____________________________Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 1, V
IN
= +5V, C1 = C2 = C3, T
A
= +25°C, unless otherwise noted.)
0
20
10
40
30
60
50
70
90
80
100
0
10 15 20
OUTPUT CURRENT (mA)
5
25 30 35
45
40
50
MAX870
EFFICIENCY vs. OUTPUT CURRENT
M
E
V
IN
= 2.0V
V
IN
= 3.3V
V
IN
= 5.0V
0
20
10
50
40
30
80
70
60
90
0
15
20
5
10
25
30
35
40
MAX871
EFFICIENCY vs. OUTPUT CURRENT
M
OUTPUT CURRENT (mA)
E
V
IN
= 2.0V
V
IN
= 3.3V
V
IN
= 5.0V
100
250
200
150
300
350
400
450
500
550
600
-40
10
-15
35
60
85
PUMP FREQUENCY vs. TEMPERATURE
M
TEMPERATURE (°C)
P
V
IN
= 1.5V, MAX871
V
IN
= 1.5V, MAX870
V
IN
= 3.3V OR 5.0V, MAX870
V
IN
= 3.3V OR 5.0V, MAX871
MAX870
OUTPUT NOISE AND RIPPLE
M
2
μ
s/div
V
IN
= 3.3V, V
OUT
= -3.18V, I
OUT
= 5mA,
20mV/div, AC COUPLED
Flying Capacitor’s Positive Terminal
C1+
5
Ground
GND
4
Flying Capacitor’s Negative Terminal
C1-
3
PIN
Positive Power-Supply Input
IN
2
Inverting Charge-Pump Output
OUT
1
FUNCTION
NAME
VOLTAGE INVERTER
OUT
IN
C1+
V
IN
R
L
C1
0.33
μ
F*
*1
μ
F
(MAX870)
C2
0.33
μ
F*
C3
0.33
μ
F*
5
1
2
3
4
V
OUT
GND
C1-
MAX870
MAX871
Figure 1. Test Circuit
MAX871
OUTPUT NOISE AND RIPPLE
M
1
μ
s/div
V
IN
= 3.3V, V
OUT
= -3.14V, I
OUT
= 5mA,
20mV/div, AC COUPLED
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