MAX8901AETA+T Maxim Integrated Products, MAX8901AETA+T Datasheet - Page 6

• 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
6
_______________________________________________________________________________________
V
I
25.0
24.8
24.6
24.4
24.2
24.0
LEDs
V
V
OUT
V
30
25
20
15
10
ON
CS
IN
5
0
-40
0
LED
vs. TEMPERATURE (MAX8901B)
D = 90%
PWM DIMMING RESPONSE
-15
20
MAXIMUM LED CURRENT
LED CURRENT vs. PWM
= 24.75mA, V
DIMMING (MAX8901A)
PWM DUTY CYCLE (%)
TEMPERATURE (°C)
(MAX8901A)
40
10
4ms/div
f
CYCLE CHANGE: 90% TO
10%, C2 = 0.1μF
ON_PWM
D = 10%
60
35
IN
= 100kHz, DUTY
R
f
PWM
CS
= V
= 20Ω,
MAX8901A/B toc13
80
= 100kHz
60
ON
= 3.6V, C1 = 1µF, C2 = 1µF, T
Typical Operating Characteristics (continued)
100
85
20mV/div
20mA/div
2V/div
0V
50mV/div
(AC-COUPLED)
500mV/div
0V
0V
0mA
507.5
507.0
506.5
506.0
505.5
505.0
504.5
504.0
503.5
503.0
502.5
V
I
LEDs
750
745
740
735
730
V
V
OUT
V
ON
CS
IN
-40
0
vs. TEMPERATURE (MAX8901B)
5
V
A
-15
CS
MINIMUM LED CURRENT
SERIAL PULSE DIMMING
RESPONSE (MAX8901B)
= +25°C, unless otherwise noted.)
vs. LED CURRENT STEP
10
LED CURRENT STEP
TEMPERATURE (°C)
(MAX8901B)
10
15
10ms/div
20
35
25
MAX8901A/B toc14
60
30
85
35
20mV/div
20mA/div
2V/div
0V
50mV/div
(AC-COUPLED)
1V/div
0V
0V
0mA