MAX8901AETA+T Maxim Integrated Products, MAX8901AETA+T Datasheet - Page 3

• 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

ELECTRICAL CHARACTERISTICS (continued)
(V
Typical values are at T
Note 1: Specifications to -40°C are guaranteed by design and characterization and are not production tested.
Figure 1. MAX8901B Timing Diagram
Serial Dimming
Full-Scale LED Current Accuracy
PWM Frequency for PWM
Dimming Control
CS to COMP Transconductance
Soft-Start Interval
Thermal Shutdown
OSCILLATOR
Operating Frequency
Maximum Duty Cycle
n-CHANNEL SWITCH
LX Leakage Current
n-Channel Switch On-Resistance
n-Channel Current Limit
IN
I
STEP
Series WLEDs in a 2mm x 2mm TDFN Package
LED_
= V
> 40μs
t
HI_INIT
ON
SHUTDOWN
t
SOFT-START
PARAMETER
= V
OVP
0
= 3.6V, V
ON
_______________________________________________________________________________________
A
FULL
= +25°C.) (Note 1)
PGND
1
Highest Efficiency Supply for 2 to 6
= V
32/33
SYMBOL
GND
I
t
START
D
LXLKG
f
2
SOFT-
PWM
R
I
f
SW
MAX
LIM
31/33
LX
= 0V, COMP, CS, and LX are unconnected, T
3
30/33
I
(MAX8901B)
MAX8901A
C
V
V
LED
500ns TO 500μs
4
CS
LX
COMP
29/33
= 27V
= 0.4V
= 24.75mA
5
= 0.022µF (Figure 1)
28/33
t
LO
CONDITIONS
6/33
T
T
> 500ns
28
A
A
T
T
t
HI
5/33
A
A
= +25°C
= +85°C
= +25°C
= -40°C to +85°C
29
4/33
30
3/33
31
A
2/33
= -40°C to +85°C, unless otherwise noted.
32
1/33
MIN
0.63
-1.3
700
40
90
-3
33
FULL
32/33
TYP
0.70
100
160
750
0.1
0.1
0.7
60
10
92
1.33ms (typ)
t
SHDN
MAX
+1.3
0.77
800
1.4
+3
80
5
SHUTDOWN
UNITS
kHz
kHz
ms
µS
µA
°C
%
%
%
Ω
A
3