MAX8901A 查看數據表（PDF） - Maxim Integrated
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MAX8901A
Maxim Integrated
MAX8901A Datasheet PDF : 14 Pages
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MAX8901A/MAX8901B
Highest Efficiency Supply
for 2 to 6 Series WLEDs in a
2mm x 2mm TDFN Package
Typical Operating Characteristics
(Circuit of Figure 5, ILED = 24.75mA, VIN = VON = 3.6V, C1 = 1µF, C2 = 1µF, TA = +25°C, unless otherwise noted.)
LED EFFICIENCY vs. INPUT VOLTAGE
90
85
80
75
70
2
4 WLEDs
6 WLEDs
3 WLEDs
INDUCTOR: TOKO 1069AS-220M
DIODE: CENTRAL SEMI CMDSH05-4
3
4
5
6
INPUT VOLTAGE (V)
LED EFFICIENCY vs. LED CURRENT
(6 WLEDs)
90
VIN = 5V
VIN = 5.5V
85
80
VIN = 4.2V
75
VIN = 3.6V
VIN = 3V
70
65
60
55
50
0
INDUCTOR: TOKO 1069AS-220M
DIODE: CENTRAL SEMI CMDSH05-4
5
10
15
20
25
LED CURRENT (mA)
LED EFFICIENCY vs. LED CURRENT
(4 WLEDs)
90
VIN = 5V VIN = 5.5V
85
80
VIN = 4.2V
VIN = 3.6V
75
70
VIN = 3V
65
60
55
50
0
INDUCTOR: TOKO 1069AS-220M
DIODE: CENTRAL SEMI CMDSH05-4
5
10
15
20
25
LED CURRENT (mA)
LED EFFICIENCY vs. INPUT VOLTAGE
90
4 WLEDs
85
3 WLEDs
80
6 WLEDs
75
70
2
INDUCTOR: TOKO 1098AS-100M
DIODE: NXP PMEG3005EB
3
4
5
6
INPUT VOLTAGE (V)
LED EFFICIENCY vs. LED CURRENT
(6 WLEDs)
90
VIN = 5V VIN = 5.5V
85
80
VIN = 4.2V
75
VIN = 3.6V
70
VIN = 3V
65
60
55
50
0
INDUCTOR: TOKO 1098AS-100M
DIODE: NXP PMEG3005EB
5
10
15
20
25
LED CURRENT (mA)
LED EFFICIENCY vs. LED CURRENT
(4 WLEDs)
90
VIN = 5V
VIN = 5.5V
85
80
VIN = 4.2V
75
VIN = 3.6V
VIN = 3V
70
65
60
55
50
0
INDUCTOR: TOKO 1098AS-100M
DIODE: NXP PMEG3005EB
5
10
15
20
25
LED CURRENT (mA)
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