MAX8901AETA+T Maxim Integrated Products, MAX8901AETA+T Datasheet - Page 4

• Manufacturer Part Number: MAX8901AETA+T
• Description: IC LED DRIVR WHITE BCKLGT 8-TDFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LEDr

Specifications of MAX8901AETA+T

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 700kHz ~ 800kHz
• Voltage - Supply: 2.6 V ~ 5.5 V
• Voltage - Output: 24V
• Mounting Type: Surface Mount
• Package / Case: 8-TDFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 25mA
• Internal Switch(s): Yes
• Efficiency: 91%
• Operating Supply Voltage: 2.6 V to 5.5 V
• Maximum Supply Current: 185 uA
• Maximum Power Dissipation: 953 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Highest Efficiency Supply for 2 to 6
Series WLEDs in a 2mm x 2mm TDFN Package
(Circuit of Figure 5, I
4
_______________________________________________________________________________________
LED
90
85
80
75
70
65
60
55
50
90
85
80
75
70
90
85
80
75
70
65
60
55
50
= 24.75mA, V
2
0
0
LED EFFICIENCY vs. INPUT VOLTAGE
LED EFFICIENCY vs. LED CURRENT
LED EFFICIENCY vs. LED CURRENT
5
5
V
3
INDUCTOR: TOKO 1069AS-220M
DIODE: CENTRAL SEMI CMDSH05-4
INDUCTOR: TOKO 1069AS-220M
DIODE: CENTRAL SEMI CMDSH05-4
INDUCTOR: TOKO 1069AS-220M
DIODE: CENTRAL SEMI CMDSH05-4
IN
INPUT VOLTAGE (V)
LED CURRENT (mA)
LED CURRENT (mA)
= 3.6V
V
V
IN
(6 WLEDs)
10
(4 WLEDs)
4 WLEDs
6 WLEDs
10
IN
IN
= 5V
= 5V
= V
4
V
V
IN
IN
15
15
ON
= 4.2V
= 4.2V
V
IN
V
= 5.5V
= 3.6V, C1 = 1µF, C2 = 1µF, T
3 WLEDs
IN
V
IN
5
= 3.6V
V
= 5.5V
20
20
IN
V
IN
= 3V
= 3V
25
25
6
Typical Operating Characteristics
90
85
80
75
70
90
85
80
75
70
65
60
55
50
90
85
80
75
70
65
60
55
50
A
2
= +25°C, unless otherwise noted.)
0
0
LED EFFICIENCY vs. INPUT VOLTAGE
LED EFFICIENCY vs. LED CURRENT
LED EFFICIENCY vs. LED CURRENT
5
5
3
INDUCTOR: TOKO 1098AS-100M
DIODE: NXP PMEG3005EB
V
INPUT VOLTAGE (V)
IN
INDUCTOR: TOKO 1098AS-100M
DIODE: NXP PMEG3005EB
LED CURRENT (mA)
INDUCTOR: TOKO 1098AS-100M
DIODE: NXP PMEG3005EB
LED CURRENT (mA)
6 WLEDs
= 5V
(6 WLEDs)
(4 WLEDs)
10
10
V
IN
V
4
= 5V V
IN
V
4 WLEDs
IN
= 4.2V
= 4.2V
15
15
V
IN
IN
V
V
IN
= 5.5V
= 5.5V
IN
5
= 3.6V
= 3.6V
3 WLEDs
20
20
V
V
IN
IN
= 3V
= 3V
25
25
6