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參數(shù)資料
| 型號(hào)： | MAX889 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Frequency, Regulated, 200mA, Inverting Charge Pump |
| 中文描述： | 高頻、穩(wěn)壓型、200mA、反相電荷泵 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 301K |
| 代理商： | MAX889 |
M
High-Frequency, Regulated,
200mA, Inverting Charge Pump
_______________________________________________________________________________________
3
Note 1:
Specifications to -40
°
C are guaranteed by design, not production tested.
ELECTRICAL CHARACTERISTICS
(V
IN
= V
SHDN
= +5V, capacitors from Table 1,
T
A
=
-40
°
C to +85
°
C
, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
Supply Voltage Range
Output Voltage Range
V
IN
V
OUT
I
OUT(MAX)1
I
OUT(MAX)2
R
LOAD
= 100
R
LOAD
= 100
V
IN
= 5V, V
OUT
= -3.3V
V
IN
= 3.3V, V
OUT
= -2.5V
2.7
-2.5
200
145
5.5
-V
IN
V
V
Maximum Output Current
mA
MAX889R
MAX889S
MAX889T
MAX889R
MAX889S
MAX889T
12
24
48
7
12
22
50
Quiescent Supply
Current (Free-Run Mode)
I
Q(FREE-RUN)
No load, V
FB
=
V
IN
mA
Quiescent Supply
Current (Regulated Mode)
I
Q(REGULATED)
No load, V
OUT
regulated to
-3.3V
mA
Shutdown Supply Current
I
SHDN
V
SHDN
= 0
μ
A
Open-Loop Output
Resistance (Free-Run Mode)
R
O
V
FB
= V
IN
4.5
SHDN
FB Input Bias Current
FB Input Offset Voltage
±
1
±
35
μ
A
mV
I
LOAD
= 0
IN Undervoltage Lockout
Threshold
V
IN
rising (30mV hysteresis)
2.3
2.6
V
SHDN
Logic High
SHDN
Logic Low
V
IH
V
IL
0.7 x V
IN
V
IN
= +2.7V to +5.5V
0.3 x V
IN
0.62
V
MAX889R
MAX889S
MAX889T
0.375
0.75
1.5
1.25
2.5
Switching Frequency
f
OSC
MHz
Typical Operating Characteristics
(Circuit of Figure 1, V
IN
= V
SHDN
= +5V, capacitors from Table 1, T
A
= +25°C, unless otherwise noted.)
OUTPUT VOLTAGE
vs. LOAD CURRENT
M
OUTPUT LOAD CURRENT (mA)
O
-3.33
-3.32
-3.31
-3.30
-3.29
-3.28
-3.27
-3.26
-3.25
0
200
400
600
800
MAX889T
MAX889S
MAX889R
0
10
20
30
40
MAX889R
OUTPUT RIPPLE
vs. LOAD CURRENT vs. C
OUT
M
LOAD CURRENT (mA)
O
0
150
200
50
100
250
300
350
C
OUT
= 22
μ
F
C
OUT
= 47
μ
F
C
OUT
= 10
μ
F
0
10
20
30
40
MAX889S
OUTPUT RIPPLE
vs. LOAD CURRENT vs. C
OUT
M
LOAD CURRENT (mA)
O
0
150
200
50
100
250
300
350
C
OUT
= 4.7
μ
F
C
OUT
= 22
μ
F
C
OUT
= 10
μ
F
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