MAX8790ETP+T Maxim Integrated Products, MAX8790ETP+T Datasheet - Page 11

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

Specifications of MAX8790ETP+T

• 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: 1 A
• High Level Output Current: 1 A
• Operating Supply Voltage: 4.5 V to 26 V
• 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: Details

Figure 2. Control Circuit Block Diagram
SHDN
CPLL
FSET
OSC
CCV
ISET
V
BRT
ENA
CC
IN
Current Balancing for LCD Panel Applications
V
PLL
CC
- 0.4V
______________________________________________________________________________________
OSCILLATOR
COMPARATOR
REGULATOR
5V LINEAR
256 x f
TRI-LEVEL
REF ADJ
Six-String White LED Driver with Active
OSC
V
CC
BRT
COUNTER
8-BIT
CLK
5 MSBs
8
COMPARATOR
AMPLIFIER
COMPENSATION
ERROR
DIGITAL CONTROL
DIGITAL
65ms TIMER
SHUTDOWN
8-BIT DAC
SLOPE
LATCH
5 LSBs
LATCH
8-BIT
REF
8
8
gm
CLOCK
FB OVERVOLTAGE
COMPARATOR
SAT
V
COMPARATOR
CC
ERROR
+ 0.6V
HVC
LVC
OUTPUT OVERVOLTAGE
CURRENT SOURCE
COMPARATOR
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
CURRENT SOURCE
EN
CURRENT SENSE
CONTROL AND
DRIVER LOGIC
10Ω
FB6
FB5
FB4
FB3
FB2
N
1.25V
OV
EXT
CS
FB1
GND
FB2
FB3
FB4
FB5
FB6
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