MAX17127 Maxim Integrated Products, MAX17127 Datasheet - Page 2

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

ABSOLUTE MAXIMUM RATINGS
V
FB_, SW to PGND .................................................-0.3V to +52V
PGND to AGND ....................................................-0.3V to +0.3V
V
COMP, ISET, R_FPWM, OVP, FSLCT
SW Switch Maximum Continuous RMS Current ...................1.6A
Continuous Power Dissipation (T
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1. V
T
Six-String WLED Driver with Integrated
Step-Up Converter
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.
2
V
V
V
V
V
V
BOOST CONVERTER
SW On-Resistance
SW Leakage Current
Operating Frequency
R
Maximum Duty Cycle
Minimum On-Time
SW Current Limit
CONTROL INPUT
PWM, EN Logic-Input
High Level
PWM, EN Logic-Input Low
Level
EN Pulldown Resistor
IN
DDIO
A
to AGND ................................................-0.3V to V
TQFN (derate 16.9mW/NC above +70NC) ..................1349mW
IN
IN
DDIO
DDIO
DDIO
IN
FSLCT
= 0°C to +85°C, unless otherwise noted. Typical values are at T
to AGND ........................................................-0.3V to +30V
______________________________________________________________________________________
Input Voltage Range
Quiescent Current
UVLO Threshold
, PWM, EN, FPO, I.C. to AGND .....................-0.3V to +6V
PARAMETER
Output Voltage
Current Limit
UVLO Threshold
Range
IN
= 12V, C
MAX17127 is enabled, V
MAX17127 is disabled, EN = AGND
MAX17127 is enabled, V
5.4V < V
MAX17127 is enabled, V
dropout condition
MAX17127 is disabled, EN = AGND, 0A < I
V
Rising edge, typical hysteresis = 250mV
Falling edge
Rising edge
20mA from SW to PGND
40V on SW, T
R
R
Operating range
At f
(Note 1)
Duty cycle = 75%
DDIO
FSLCT
FSLCT
SW
A
COMP
= +70NC)
is forced to 4.2V
= 1MHz
= 100kI
= 400kI
IN
< 26V, 0A < I
= 0.51nF, C
A
= +25NC
DDIO
COUT
VDDIO
EN
EN
EN
CONDITIONS
+ 0.3V
= 3.3V, V
= 3.3V,
= 3.3V, V
= 4.7µF, R
< 10mA
IN
IN
A
= 26V
= 5V, I
Operating Temperature Range .......................... -40NC to +85NC
Junction Temperature .....................................................+150NC
Storage Temperature Range ............................ -60NC to +150NC
ESD
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
COMP
= +25°C.)
HBM ................................................................................... 2kV
MM ...................................................................................200V
VDDIO
VDDIO
= 82.5kΩ, R
< 50FA
= 10mA,
ISET
= 180kΩ, R
0.225
4.85
3.90
4.55
0.95
3.12
MIN
120
4.6
3.1
4.3
2.1
25
90
91
5
FSLCT
TYP
4.75
4.00
4.75
0.12
0.25
200
2.7
3.7
4.5
1.0
3.9
45
95
50
5
5
= 100kΩ, L = 10µH,
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0.275
MAX
5.15
4.10
4.95
0.25
1.05
500
280
3.2
4.1
4.7
4.7
0.8
26
10
70
80
1
UNITS
MHz
mA
mA
FA
FA
kI
kI
ns
I
%
V
V
V
V
V
A
V
V