MAX17127 Maxim Integrated Products, MAX17127 Datasheet - Page 5

• Manufacturer Part Number: MAX17127
• Description: Six-String WLED Driver
• Manufacturer: Maxim Integrated Products

ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V
T
Note 1: Specifications are guaranteed by design, not production tested.
(Circuit of Figure 1. V
FB_ Minimum On-Time
FAULT PROTECTION
OVP Threshold Voltage
FB_ Overvoltage Threshold
FB_ Open Threshold Voltage
FB_ Check LED Source Current
FB_ Check LED Time
Overcurrent Fault Timer
PWM CONTROL
PWM Input On-Time
PWM Input Frequency Range
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
PARAMETER
BOOST CONVERTER EFFICIENCY vs. INPUT VOLTAGE (V
(V
92
90
88
86
84
82
80
78
OUT
5
= 32V, I
_______________________________________________________________________________________
IN
IN
8
= 12V, T
Six-String WLED Driver with Integrated
= 12V, C
OUT
11
INPUT VOLTAGE (V)
= 120mA, BRIGHTNESS = 100%)
14
A
COMP
= +25NC, unless otherwise noted.)
Rising edge, typical hysteresis = 90mV
Latch-off timer
17
= 0.51nF, C
20
23
26
COUT
CONDITIONS
S
= 4.7µF, R
)
COMP
A
Typical Operating Characteristics
= +25°C.)
= 82.5kΩ, R
BOOST CONVERTER EFFICIENCY vs. BRIGHTNESS
(V
90
80
70
60
50
Step-Up Converter
S
0
= 2V, V
ISET
20
OUT
= 32V, I
= 180kΩ, R
BRIGHTNESS (%)
40
1.23
MIN
400
130
400
0.4
0.7
0.1
88
7
OUT
60
= 120mA AT 100%)
FSLCT
TYP
80
= 100kΩ, L = 10µH,
100
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MAX
1.27
700
280
168
1.3
1.3
25
9
UNITS
kHz
mV
mA
ms
ns
µs
ns
V
V
5