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MAX868C/D Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX868C/D
Description  Regulated, Adjustable -2x Inverting Charge Pump
PDF  12 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX868C/D Datasheet(HTML) 4 Page - Maxim Integrated Products

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Regulated, Adjustable -2x
Inverting Charge Pump
4
_______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 5, TA = +25°C, unless otherwise noted.)
0
0.01
1
0.1
10
100
EFFICIENCY vs. LOAD CURRENT
(VIN = 5V)
10
LOAD CURRENT (mA)
50
40
30
20
60
70
80
VOUT = -5V
VOUT = -7.5V
VOUT = -3.3V
0
0.01
1
0.1
10
100
EFFICIENCY vs. LOAD CURRENT
(VIN = 3.3V)
10
LOAD CURRENT (mA)
50
40
30
20
60
70
80
VOUT = -5V
VOUT = -3.3V
0
0.01
1
0.1
10
100
EFFICIENCY vs. LOAD CURRENT
(VIN = 5V)
10
LOAD CURRENT (mA)
50
40
30
20
60
70
80
CIRCUIT OF FIGURE 6
VOUT = -2.5V
VOUT = -3.3V
0
60
40
20
100
80
180
160
140
120
200
-40
-20
0
20
40
60
80
100
OPEN-LOOP OUTPUT IMPEDANCE
vs. TEMPERATURE
(FB = IN, VOUT = -2 x VIN)
TEMPERATURE (°C)
VIN = 2V
VIN = 3.3V
VIN = 5V
20
µs/div
20mV/div
VIN = 3.3V, VOUT = -3.3V, ILOAD = 5mA,
VOUT AC COUPLED (20mV/div), COUT = 10µF CERAMIC
OUTPUT VOLTAGE RIPPLE
(COUT = 10µF CERAMIC)
0
60
40
20
100
80
180
160
140
120
200
-40
-20
0
20
40
60
80
100
OPEN-LOOP OUTPUT IMPEDANCE
vs. TEMPERATURE
(FB = IN, VOUT = -VIN)
TEMPERATURE (°C)
VIN = 2V
CIRCUIT OF FIGURE 6
VIN = 3.3V
VIN = 5V
20
µs/div
20mV/div
VIN = 3.3V, VOUT = -3.3V, ILOAD = 5mA,
VOUT AC COUPLED (20mV/div), COUT = 10µF (AVX TPS)
OUTPUT VOLTAGE RIPPLE
(COUT = 10µF TANTALUM)
20
µs/div
20mV/div
VIN = 3.3V, VOUT = -3.3V, ILOAD = 5mA,
VOUT AC COUPLED (20mV/div), COUT = 2.2µF CERAMIC
OUTPUT VOLTAGE RIPPLE
200
µs/div
10mA/div
20mV/div
VIN = 5V, VOUT = -5V, IOUT = 1mA TO 11mA STEP
LOAD-TRANSIENT RESPONSE



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