Lead Temperature (soldering, 10s)...................................+300°C
Soldering Temperature (reflow)........................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Electrical Characteristics
(Circuit of Figure 1. V
IN
= 12V, R
ISET
= 100kΩ,
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
IN Input Voltage Range
IN Standby Current
V
CC
Output Voltage
V
CC
Current Limit
V
CC
UVLO Threshold
IN UVLO Threshold
STEP-UP CONVERTER
LX On-Resistance
LX Leakage Current
Off-Time
LX Peak Current Limit
Minimum On-Time
Minimum Output Regulation
Voltage
Maximum Output Regulation
Voltage
MAX17129 only
MAX17149 only
MAX17129 only
MAX17149 only
0.3V < V
EN
< 3.5V, T
A
= +25°C
4.1V < V
EN
< 26V, T
A
= +25°C
0.3V < V
BRT
< 3.5V, T
A
= +25°C
4.1V < V
BRT
< 26V, T
A
= +25°C
750
MAX17129 only; V
OVP
= 40V, V
FB
= 0.75V
MAX17149 only; V
OVP
= 20V, V
FB
= 0.75V
0.3V < V
FSEL
< 3.5V, T
A
= +25°C
4.1V < V
FSEL
< 26V, T
A
= +25°C
1500
15
7.5
50
25
6
2000
15
6.8
41.5
23.9
IN connected to V
CC
V
EN
= 3V, V
IN
= 26V, no external loads
V
EN
= 0V, V
IN
= 26V
V
EN
= 3V, 0 < I
VCC
< 10mA
V
CC
is forced to 3.5V; IN not connected to V
CC
Rising edge, typical hysteresis = 100mV
Rising edge, typical hysteresis = 100mV;
IN not connected to V
CC
100mA from LX to PGND
V
LX
= 40V, T
A
= +25°C
FSEL = GND, V
IN
= 12V, V
OVP
= 22V
FSEL = V
CC
, V
IN
= 12V, V
OVP
= 22V
Duty cycle = 75%
450
900
2.5
3.6
15
2.75
5.5
CONDITIONS
IN not connected to V
CC
MIN
6
3.0
3.2
0.1
3.8
30
2.8
5.75
250
0.05
500
1000
3
50
16.5
8.3
43
25.4
18
9.8
44.5
26.9
6
110
15
2000
TYP
MAX
26
5.5
4
5
4.0
45
2.85
5.9
500
1
550
1100
3.5
UNITS
V
mA
µA
V
mA
V
V
mΩ
µA
ns
A
ns
V
V
V
V
INPUT LEAKAGE/BIAS CURRENTS
EN Bias Current
BRT Bias Current
EN Input Impedance
OVP Input Current
FSEL Bias Current
µA
µA
kΩ
µA
µA
µA
www.maximintegrated.com
Maxim Integrated
│
2
MAX17129/MAX17149
Low-Cost, 6-String WLED Drivers with
Quick-PWM Step-Up Converter
Electrical Characteristics (continued)
(Circuit of Figure 1. V
IN
= 12V, R
ISET
= 100kΩ,
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
LED CURRENT SOURCE
ISET Resistance Range
R
ISET
= 44.44kΩ
R
ISET
= 66.66kΩ
R
ISET
= 100kΩ
Full-Scale FB_ Output Current
R
ISET
= 133.33kΩ
R
ISET
= 200kΩ
R
ISET
= 100kΩ, hybrid dimming mode
R
ISET
= 250kΩ, hybrid dimming mode
ISET Output Voltage
I
FB_
= 30mA
I
FB_
= 20mA
Current Regulation Between
Strings
I
FB_
= 15mA
I
FB_
= 10mA
I
FB_
= 5mA, hybid dimming ode
I
FB_
= 2mA, hybrid dimming mode
R
ISET
= 66.66kΩ, 100% duty cycle
Minimum FB_ Regulation Voltage
R
ISET
= 100kΩ, 100% duty cycle
R
ISET
= 133.33kΩ, 100% duty cycle
R
ISET
= 200kΩ, 100% duty cycle
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_ Check LED Time
FB_ Open LED Threshold
FB_ Overvoltage Threshold
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
FSEL Input High Level
FSEL Input Low Level
(Note 2)
(Note 2)
Select f
SW
= 500kHz
Select f
SW
= 1000kHz
2.1
0.8
6.7
Sequence for 6 channels
Rising edge, hysteresis = 1.8V
44.1
0.60
45.1
0.665
1
500
8.0
+160
15
700
9.6
46.1
0.73
V
mA
ms
mV
V
°C
°C
V
V
MAX17129/MAX17149 enabled, PWM dimming mode
MAX17129/MAX17149 enabled, hybrid dimming mode
0.1
2.1
1.4
1.8
0.8
V
FB_
= 50mV
V
FB_
= 28V, T
A
= +25°C, EN = 0V, V
OVP
= 28V
V
FB_
= 40V, T
A
= +25°C, EN = 0V, V
OVP
= 40V
300
2.1
0.8
25
0.05
2.5
44
43.3
29.1
19.4
14.55
9.65
4.4
1.4
1.225
-1.5
-2.0
-2.0
-2.75
-6.0
-15.0
375
275
200
125
45
30
20
15
10
5
2
1.250
250
47.7
30.9
20.6
15.45
10.35
5.6
2.6
1.275
+1.5
+2.0
+2.0
+2.75
+6.0
+15.0
550
365
275
200
20
1
5
Ω
µA
ns
V
V
kHz
V
V
mV
%
V
mA
kΩ
CONDITIONS
MIN
TYP
MAX
UNITS
BOOST FREQUENCY SELECTION FSEL
www.maximintegrated.com
Maxim Integrated
│
3
MAX17129/MAX17149
Low-Cost, 6-String WLED Drivers with
Quick-PWM Step-Up Converter
Electrical Characteristics
(Circuit of Figure 1. V
IN
= 12V, R
ISET
= 100kΩ,
T
A
= -40°C to +85°C,
unless otherwise noted.) (Note 1)
PARAMETER
IN Input Voltage Range
IN Quiescent Current
V
CC
Output Voltage
V
CC
Current Limit
V
CC
UVLO Threshold
IN UVLO Threshold
STEP-UP CONVERTER
LX On-Resistance
LX Leakage Current
Off-Time
LX Peak Current Limit
Minimum Output Regulation
Voltage
Maximum Output Regulation
Voltage
100mA from LX to PGND
V
LX
= 40V, T
A
= +25°C
FSEL = GND V
IN
= 12V, V
OVP
= 22V
FSEL = V
CC
, V
IN
= 12V, V
OVP
= 22V
Duty cycle = 75%
MAX17129 only
MAX17149 only
MAX17129 only
MAX17149 only
0.3V < V
EN
< 3.5V, T
A
= +25°C
4.1V < V
EN
< 26V, T
A
= +25°C
0.3V < V
BRT
< 3.5V, T
A
= +25°C
4.1V < V
BRT
< 26V, T
A
= +25°C
750
MAX17129 only; V
OVP
= 40V, T
A
= +25°C, V
FB
= 0.75V
MAX17149 only; V
OVP
= 20V, T
A
= +25°C, V
FB
= 0.75V
0.3V < V
FSEL
< 3.5V
4.1V < V
FSEL
< 26V
44
R
ISET
= 44.44kΩ
R
ISET
= 66.66kΩ
R
ISET
= 100kΩ
Full-Scale FB_ Output Current
R
ISET
= 133.33kΩ
R
ISET
= 200kΩ
R
ISET
= 100kΩ, hybrid dimming mode
R
ISET
= 250kΩ, hybrid dimming mode
ISET Output Voltage
www.maximintegrated.com
CONDITIONS
IN not connected to V
CC
IN = V
CC
V
EN
= 3V, V
IN
= 26V, no external loads
V
EN
= 0V, V
IN
= 26V
V
EN
= 3V, 0 < I
VCC
< 10mA
V
CC
is forced to 3.5V; IN not connected to V
CC
Rising edge, typical hysteresis = 100mV
Rising edge, typical hysteresis = 100mV;
IN not connected to V
CC
MIN
6
3
TYP
MAX
26
5.5
4
5
UNITS
V
mA
µA
V
mA
V
V
3.6
15
2.75
5.5
4.0
45
2.85
5.9
500
1
450
900
2.5
15
6.8
41.5
23.9
550
1100
3.65
18
9.8
44.5
26.9
6
110
15
2000
50
25
6
2000
250
47.7
30.9
20.6
15.45
10.35
5.6
2.6
1.275
mΩ
µA
ns
A
V
V
V
V
INPUT LEAKAGE/BIAS CURRENTS
EN Bias Current
BRT Bias Current
EN Input Impedance
OVP Input Current
FSEL Bias Current
LED CURRENT SOURCE
ISET Resistance Range
kΩ
43.3
29.1
19.4
14.55
9.65
4.4
1.4
1.225
µA
µA
kΩ
µA
µA
mA
V
Maxim Integrated
│
4
MAX17129/MAX17149
Low-Cost, 6-String WLED Drivers with
Quick-PWM Step-Up Converter
Electrical Characteristics (continued)
(Circuit of Figure 1. V
IN
= 12V, R
ISET
= 100kΩ,
T
A
= -40°C to +85°C,
unless otherwise noted.) (Note 1)
PARAMETER
I
FB_
= 30mA
I
FB_
= 20mA
Current Regulation Between
Strings
I
FB_
= 15mA
I
FB_
= 10mA
I
FB_
= 5mA, hybrid dimming mode
I
FB_
= 2mA, hybrid dimming mode
R
ISET
= 66.66kΩ, 100% duty cycle
Minimum FB_ Regulation Voltage
R
ISET
= 100kΩ, 100% duty cycle
R
ISET
= 133.33kΩ, 100% duty cycle
R
ISET
= 200kΩ, 100% duty cycle
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
Select f
SW
= 500kHz
Select f
SW
= 1000kHz
2.1
0.8
V
V
6.7
Rising edge, hysteresis = 1.8V
44.1
0.60
46.1
0.73
700
9.7
V
mA
mV
V
MAX17129/MAX17149 enabled, PWM dimming mode
MAX17129/MAX17149 enabled, hybrid dimming mode
0.1
2.1
1.4
1.8
0.8
V
FB_
= 50mV
V
FB_
= 28V, T
A
= +25°C, EN = GND, V
OVP
= 28V
V
FB_
= 40V, T
A
= +25°C, EN = GND, V
OVP
= 40V
300
2.1
0.8
25
CONDITIONS
MIN
-1.5
-2.0
-2.0
-2.75
-6.0
-15.0
TYP
MAX
+1.5
+2.0
+2.0
+2.75
+6.0
+15.0
550
365
275
200
20
1
5
Ω
µA
ns
V
V
kHz
V
V
mV
%
UNITS
Note 1:
All devices are 100% production tested at T
A
= +25°C. Limits over temperature are guaranteed by design.
Note 2:
Specifications are guaranteed by design, not production tested.
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