MAX8790ETP+ Maxim Integrated Products, MAX8790ETP+ Datasheet - Page 4

• Manufacturer Part Number: MAX8790ETP+
• Description: IC LED DRVR WHITE BCKLGT 20-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LEDr

Specifications of MAX8790ETP+

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: No
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 1MHz
• Voltage - Supply: 4.5 V ~ 5.5 V, 5.5 V ~ 26 V
• Voltage - Output: 5V
• Mounting Type: Surface Mount
• Package / Case: 20-TQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 25mA
• Internal Switch(s): Yes
• Low Level Output Current: 1000000 uA (Typ)
• High Level Output Current: 25.75 mA
• Operating Supply Voltage: 4.5 V to 26 V
• Maximum Supply Current: 2 mA
• Maximum Power Dissipation: 1349 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Six-String White LED Driver with Active
Current Balancing for LCD Panel Applications
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1. V
4
IN Input Voltage Range
IN Quiescent Current
V
V
V
STEP-UP CONVERTER
EXT High Level
EXT Low Level
EXT On-Resistance
OSC High-Level Threshold
OSC Midlevel Threshold
OSC Low-Level Threshold
Operating Frequency
Maximum Duty Cycle
CS Trip Voltage
CONTROL INPUT
SHDN Logic-Input High Level
SHDN Logic-Input Low Level
BRT, ENA Logic-Input High Level
BRT, ENA Logic-Input Low Level
INPUT LEAKAGE
SHDN Leakage Current
CS Leakage Current
OSC Leakage Current
BRT, ENA Leakage Current
FSET, ISET Leakage Current
OV Leakage Current
CC
CC
CC
_______________________________________________________________________________________
Output Voltage
Short-Circuit Current
UVLO Threshold
PARAMETER
IN
= 12V, V
SHDN
V
V
V
SHDN = GND
V
Rising edge, hysteresis = 20mV
10mA from EXT to GND
-10mA from EXT to V
EXT high or low
V
V
V
Duty cycle = 75%
SHDN = 26V
V
FSET = ISET = V
IN
CC
SHDN
SHDN
OSC
OSC
OSC
CS
= V
= V
= GND
bypassed to GND through 1µF cap
IN
= V
= open
= GND
, CCV = 0.1µF, T
CC
= high
= 5V, 6V < V
CC
CC
IN
V
V
CC
CONDITIONS
IN
IN
< 26V, 0 < I
A
= 26V
= V
= -40°C to +85°C, unless otherwise noted.) (Note 2)
CC
= 5V
VCC
< 10mA
V
V
4.00
MIN
675
450
-0.1
4.5
5.5
4.7
0.1
0.4
1.5
0.9
2.1
2.1
CC
CC
12
94
85
-3
-1
-1
-
-
TYP
V
MAX
+0.1
26.0
4.45
130
825
550
115
+35
+50
5.5
5.3
0.1
2.0
0.4
1.1
0.8
0.8
CC
+3
+1
+1
10
2
2
5
-
UNITS
MHz
kHz
mA
mA
mV
µA
µA
µA
µA
µA
µA
µA
Ω
%
V
V
V
V
V
V
V
V
V
V
V
V