MAX8969EWL50(2011) Просмотр технического описания (PDF) - Maxim Integrated
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MAX8969EWL50 Datasheet PDF : 15 Pages
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Step-Up Converter
for Handheld Applications
Typical Operating Characteristics
(VIN = 3.6V, COUT = 22µF, X5R, 6.3V local and 10µF, X5R, 6.3V, 1µH inductor, circuit of Figure 1, TA = +25NC, unless otherwise noted.)
EFFICIENCY vs. OUTPUT CURRENT
(VOUT = 5V)
100
VIN = 4.3V
95
90
85
VIN = 3.1V
80 VIN = 2.5V VIN = 3.6V
75
70
65
60
1
L = TOKO DFE252012 1µH
10
100
1000
LOAD CURRENT (mA)
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
3000
VOUT, 5V ≥ 4.5V
2500
2000
1500
1000
VOUT, 3.7V ≥ 3.35V
500
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
EFFICIENCY vs. OUTPUT CURRENT
(VOUT = 3.7V)
100
98
VIN = 3.1V
96
94
92
90
88
VIN = 2.5V
86
84
82
80
1
L = TOKO DFE252012 1µH
10
100
1000
LOAD CURRENT (mA)
5.05
5.00
4.95
4.90
4.85
4.80
4.75
4.70
4.65
4.60
4.55
0
OUTPUT VOLTAGE (VOUT = 5V)
vs. OUTPUT CURRENT
VIN = 3.6V VIN = 4.3V
VIN = 3.2V
VIN = 2.5V
200 400 600 800 1000
OUTPUT CURRENT (mA)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
80
70
VOUT = 5V
60
50
40
30
VOUT = 3.7V
20
10
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (VOUT = 3.7V)
vs. OUTPUT CURRENT
4.4
4.2
4.0
VIN = 2.5V
3.8
VIN = 3.2V
VIN = 4.3V
3.6
3.4 VIN = 3.6V
3.2
0
200 400 600 800 1000
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (VOUT = 5V)
vs. INPUT VOLTAGE
5.5
IOUT = 10mA IOUT = 100mA IOUT = 600mA
5.0
4.5
AUTOMATIC
IOUT = 1000mA FREQUENCY AUTOMATIC
4.0
ADJUSTMENT TRACK MODE
TRANSITION
3.5
3.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (VOUT = 3.7V)
vs. INPUT VOLTAGE
5.0
4.5
IOUT = 10mA
AUTOMATIC
TRACK MODE
TRANSITION
4.0
IOUT = 100mA
3.5
IOUT = 1000mA
IOUT = 600mA AUTOMATIC
3.0
FREQUENCY
ADJUSTMENT
2.5
2.5
3.0
3.5
4.0
4.5
INPUT VOLTAGE (V)
_______________________________________________________________________________________ 5
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