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MAX889 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX889
Description  High-Frequency, Regulated, 200mA, Inverting Charge Pump
PDF  8 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX889 Datasheet(HTML) 4 Page - Maxim Integrated Products

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High-Frequency, Regulated,
200mA, Inverting Charge Pump
4
_______________________________________________________________________________________
0
10
30
20
40
50
0
100
50
150
200
250
300
350
MAX889T
OUTPUT RIPPLE
vs. LOAD CURRENT vs. COUT
LOAD CURRENT (mA)
COUT = 2.2
µF
COUT = 4.7
µF
COUT = 10
µF
0
30
20
10
40
50
60
70
80
90
100
0200
100
300
400
500
EFFICIENCY vs. LOAD CURRENT
(VIN = 5V, VOUT = -3.3V)
LOAD CURRENT (mA)
MAX889T
MAX889R
MAX889S
0
30
20
10
50
40
90
80
70
60
100
0
50
100
150
200
250
300
350
EFFICIENCY vs. LOAD CURRENT
(VIN = 3.3V, VOUT = -2.5V)
LOAD CURRENT (mA)
MAX889R
MAX889T
MAX889S
Typical Operating Characteristics (continued)
(Circuit of Figure 1, VIN = V SHDN = +5V, capacitors from Table 1, TA = +25°C, unless otherwise noted.)
MAX889S
LOAD-TRANSIENT RESPONSE
40
µs/div
A
B
20 TO 200mA LOAD STEP
CIRCUIT OF FIGURE 4
A: IOUT, 100mA/div
B: VOUT, 20mV/div, AC-COUPLED
MAX889S
LINE-TRANSIENT RESPONSE
40
µs/div
A
B
IOUT = 200mA
CIRCUIT OF FIGURE 4
A: VIN, 2V/div
B: VOUT, 10mV/div, AC-COUPLED
MAX889S
STARTUP AND SHUTDOWN
2ms/div
A
B
IOUT = 200mA
A: VOUT, 1V/div
B: IIN, 100mA/div
C: VSHDN, 10V/div
C
0
0
1.50
2.00
1.75
2.50
2.25
2.75
3.00
2.5
3.5
4.0
3.0
4.5
5.0
5.5
FREE-RUN OUTPUT RESISTANCE
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
1.0
1.5
2.0
2.5
3.0
FREE-RUN OUTPUT RESISTANCE
vs. TEMPERATURE
TEMPERATURE (
°C)
-40
20
40
-20
0
60
80
0
4
2
8
6
10
12
2.5
3.5
4.0
3.0
4.5
5.0
5.5
QUIESCENT SUPPLY CURRENT
vs. INPUT VOLTAGE (REGULATED MODE)
INPUT VOLTAGE (V)
MAX889T
MAX889S
MAX889R
VOUT = -2.5V



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