MAX17149ETE+ Maxim Integrated Products, MAX17149ETE+ Datasheet - Page 5

• Manufacturer Part Number: MAX17149ETE+
• Description: LED Drivers 6-String WLED Driver
• Manufacturer: Maxim Integrated Products

Specifications of MAX17149ETE+

• Operating Supply Voltage: 3 V to 26 V
• Maximum Supply Current: 4 mA
• Maximum Power Dissipation: 1176 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFN-16
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(Circuit of Figure 1. V
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V
Note 1: All devices are 100% production tested at T
Note 2: Specifications are guaranteed by design, not production tested.
FB_ On-Resistance
FB_ Leakage Current
FB_ On-Time
BRT Input High Level
BRT Input Low Level
BRT Dimming Frequency
EN Input High Level
EN Input Low Level
FAULT PROTECTION
OVP Overvoltage
FB_ Check LED Source Current
FB_ Open LED Threshold
FB_ Overvoltage Threshold
BOOST FREQUENCY SELECTION FSEL
FSEL Input High Level
FSEL Input Low Level
94
92
90
88
86
84
82
80
78
5
PARAMETER
BOOST CONVERTER EFFICIENCY
(V
8
OUT
BRIGHTNESS = 100%)
vs. INPUT VOLTAGE
11
= 31.8V/I
INPUT VOLTAGE (V)
IN
14
IN
= 12V, T
= 12V, R
OUT
17
Low-Cost, 6-String WLED Drivers with
= 120mA,
20
A
ISET
= +25°C, unless otherwise noted.)
23
V
V
V
Rising edge, hysteresis = 1.8V
Select f
Select f
FB_
FB_
FB_
= 100kI, T
26
= 50mV
= 28V, T
= 40V, T
SW
SW
= 500kHz
= 1000kHz
Quick-PWM Step-Up Converter
A
90
80
70
60
50
A
A
= -40NC to +85NC, unless otherwise noted.) (Note 1)
= +25NC, EN = GND, V
= +25NC, EN = GND, V
(V
0
A
IN
= +25NC. Limits over temperature are guaranteed by design.
BOOST CONVERTER EFFICIENCY
= 12V, V
CONDITIONS
20
vs. BRIGHTNESS
BRIGHTNESS (%)
OUT
AT 100%)
40
= 31.8V/I
Typical Operating Characteristics
60
OUT
VO
VO
80
= 120mA
= 28V
= 40V
100
20
15
10
5
0
43.7
0.60
MIN
LED CURRENT vs. BRIGHTNESS SETTING
300
2.1
0.1
2.1
6.7
2.1
20
PWM DUTY CYCLE (%)
TYP
40
f
BRT
MAX
46.7
0.73
600
= 200Hz
0.8
0.8
9.7
0.8
60
20
25
1
5
80
UNITS
kHz
mA
mV
FA
ns
I
V
V
V
V
V
V
V
V
100
5