MAX8790ETP+ Maxim Integrated Products, MAX8790ETP+ Datasheet - Page 5

• 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

ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V
Note 1: Specifications are guaranteed by design, not production tested.
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
LED CURRENT
Full-Scale FB_ Output Current
ISET High-Level Threshold
ISET Voltage
20% Output Current
Current Regulation Between
Strings
Minimum FB_ Regulation Voltage
Maximum FB_ Ripple
FB_ On-Resistance
FB_ Leakage Current
BRT Input Frequency
FAULT PROTECTION
OV Threshold Voltage
FB_ Overvoltage Threshold
FAULT Shutdown Timer
PHASE-LOCKED LOOP
FSET High-Level Threshold
BRT Frequency Capture Range
Current Balancing for LCD Panel Applications
PARAMETER
_______________________________________________________________________________________
IN
Six-String White LED Driver with Active
= 12V, V
SHDN
ISET = V
R
R
Default setting for 20mA full-scale LED current
ISET = V
ISET = V
ISET = V
R
ISET= V
ISET = V
ISET= V
V
SHDN = GND, V
SHDN = V
V
PLL disabled
R
R
FB_
FB_
= V
ISET
ISET
ISET
FSET
FSET
IN
= 50mV
> 5.6V (typ)
= 80kΩ to GND, BRT = 100%
= 133kΩ to GND, BRT = 100%
= 80kΩ to GND, BRT = 100%
= 500kΩ
= 250kΩ
, CCV = 0.1µF, T
CC
CC
CC
CC
CC
CC
CC
IN
, BRT = 100%
, C
, BRT = 100%
, BRT = 20%
, BRT = 100%
, BRT = 20%
, BRT = 12.5%
, BRT = GND, V
OUT
FB_
= 1µF, OSC = V
= 26V
CONDITIONS
A
= -40°C to +85°C, unless otherwise noted.) (Note 2)
FB_
= 15V
CC
(Note 1)
V
V
V
19.2
24.0
14.4
1.12
1.16
MIN
280
250
140
100
150
300
CC
0.4
3.8
0.2
0.4
CC
CC
50
-2
-3
+
-
-
TYP
V
MAX
20.8
26.0
15.6
1.26
1.30
1.45
840
760
530
200
500
CC
250
500
4.2
+2
+3
20
28
80
1
+
UNITS
mV
mA
mA
mV
ms
µA
Hz
Hz
Hz
%
Ω
V
V
V
V
V
P-P
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