MAX8790AETP+T Maxim Integrated Products, MAX8790AETP+T Datasheet - Page 3

• Manufacturer Part Number: MAX8790AETP+T
• Description: IC LED DRVR WHITE BCKLGT 20-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LEDr

Specifications of MAX8790AETP+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: 27mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -
• Lead Free Status / Rohs Status: Details

ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V
INPUT LEAKAGE
CS Leakage Current
OSC Leakage Current
BRT, ENA Leakage Current
FSET, ISET Leakage Current
OV Leakage Current
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
Minimum BRT Duty Cycle
FAULT PROTECTION
OV Threshold Voltage
FB_ Overvoltage Threshold
FAULT Shutdown Timer
Thermal-Shutdown Threshold
PHASE-LOCKED LOOP
FSET High-Level Threshold
BRT Frequency Capture Range
Current Balancing for LCD Panel Applications
Leakage Current
PARAMETER
IN
_______________________________________________________________________________________
= 12V, V
Six-String White LED Driver with Active
SHDN
V
FSET = ISET = V
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
PLL active
V
(Note 1)
PLL disabled
R
R
= V
CS
FB_
FB_
ISET
ISET
ISET
FSET
FSET
IN
= GND
= 50mV
> 5.6V (typ)
, CCV = 0.1µF, T
= 80k
= 133k
= 80k
= 500k
= 250k
= 26V
= GND, V
= V
CC
CC
CC
CC
CC
CC
CC
IN
, BRT = 100%
, BRT = 20%
, BRT = 100%
, BRT = 20%
, BRT = 100%
, 12.5%
, C
, BRT = GND, V
to GND, BRT = 100%
to GND, BRT = 100%
OUT
to GND, BRT = 100%
FB_
CC
= 1μF, OSC = V
= 26V
A
CONDITIONS
= 0°C to +85°C, unless otherwise noted. Typical values are at T
FB_
= 15V
CC
(Note 1)
V
19.40
24.25
14.40
V
V
1.12
3.84
1.16
0.20
MIN
-0.1
-1.5
-2.0
300
270
150
100
150
300
CC
0.4
0.4
CC
50
CC
-3
-1
-1
+
-
-
V
20.00
25.00
15.00
TYP
1.19
4.00
12.5
1.23
+40
500
450
275
120
170
200
400
CC
0.6
13
10
65
+
V
20.60
25.75
15.60
MAX
+2.0
+0.1
1.26
4.16
+1.5
1.30
1.45
+42
+50
800
720
500
200
500
250
500
CC
+3
+1
+1
20
28
80
1
+
A
= +25°C.)
UNITS
mV
mA
mA
mV
μA
μA
μA
μA
ms
Hz
μA
μA
μA
Hz
°C
%
%
%
V
V
V
V
V
P-P
3