MAX1986ETE+ Maxim Integrated Products, MAX1986ETE+ Datasheet - Page 4
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MAX1986ETE+
Manufacturer Part Number
MAX1986ETE+
Description
IC LED DRVR WHITE BCKLGT 16-TQFN
Manufacturer
Maxim Integrated Products
Type
Backlight, White LEDr
Datasheet
1.MAX1986ETET.pdf
(17 pages)
Specifications of MAX1986ETE+
Topology
PWM, Step-Up (Boost)
Number Of Outputs
4
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
White LED
Frequency
800kHz ~ 1.2MHz
Voltage - Supply
2.7 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
16-TQFN Exposed Pad
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
25mA
Internal Switch(s)
Yes
Efficiency
90%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Lead Free Status / Rohs Status
Details
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1; V
+85°C, unless otherwise noted.) (Note 3)
Ultra-High-Efficiency White
LED Drivers
4
IN Supply Range
IN Undervoltage Lockout Threshold
IN Quiescent Current
REF Output Voltage
REF Line Regulation
REF Load Regulation
Oscillator Frequency
OUT Overvoltage Protection
Threshold
INTERNAL MOSFET SWITCHES
N-Channel MOSFET On-Resistance
P-Channel MOSFET On-Resistance
N-Channel MOSFET Current Limit
CONTROL INPUTS
BITA, BITB, BITC Input Logic Low
Level
BITA, BITB, BITC Input Logic High
Level
MODE Input Logic Low Level
MODE Input Logic High Level
SEL Input Logic Low Level
SEL Input Logic Midlevel
SEL Input Logic High Level
FULL-SCALE LED CURRENT ADJUSTMENT
LD1 to LD8 Output Current
_______________________________________________________________________________________
PARAMETER
IN
= 3.3V, SETI = BITA = BITB = BITC = SEL = IN, MODE = GND, C
50mV typical hysteresis
BITA = BITB = BITC = IN, LD1 to LD8 = GND
I
2.7V < V
-1µA < I
V
hysteresis
I
I
MAX1984
MAX1985
MAX1986
2.7V < V
2.7V < V
2.7V < V
2.7V < V
2.7V < V
2.7V < V
2.7V < V
V
V
BITC = IN
V
BITC = IN
V
BITC = IN
SETI = GND
REF
LX
LX
LD1
LD
LD
LD
LD_
= 200mA
= 200mA
_ = 80mV, SETI = BITA = BITB = BITC = IN
_ = 80mV, R
_ = 80mV, R
= 0
= 80mV, R
to V
REF
IN
IN
IN
IN
IN
IN
IN
IN
LD8
< 5.5V
< 5.5V
< 5.5V
< 5.5V
< 5.5V
< 5.5V
< 5.5V
< 5.5V
< +50µA
= 50mV, OUT rising, 100mV typical
SETI
SETI
SETI
CONDITIONS
= 278kΩ ±1%, BITA = BITB =
= 1.8MΩ ±1%, BITA = BITB =
= 697kΩ ±1%, BITA = BITB =
OUT
= 4.7µF, C
V
1.230
IN
MIN
0.50
0.40
0.30
0.50
2.05
11.5
15.5
0.42
2.7
2.2
0.8
5.1
1.6
16
22
- 0.4
REF
TYP
= 0.22µF, T
1.270
MAX
0.81
0.65
0.52
1.85
16.0
20.0
0.60
600
5.5
2.6
1.2
5.5
0.8
1.0
0.4
0.4
0.4
15
20
28
5
A
= -40°C to
UNITS
MHz
mV
mV
mA
µA
Ω
Ω
V
V
V
V
A
V
V
V
V
V
V
V