LM2794TLX National Semiconductor, LM2794TLX Datasheet - Page 6

• Manufacturer Part Number: LM2794TLX
• Description: IC LED DRVR WHT BCKLT 14USMD
• Manufacturer: National Semiconductor

Specifications of LM2794TLX

• Constant Current: Yes
• Topology: PWM, Switched Capacitor (Charge Pump), Step-Up (Boost)
• Number Of Outputs: 4
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 325kHz ~ 675kHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 3.8V
• Mounting Type: Surface Mount
• Package / Case: 14-UFBGA
• Operating Temperature: -30°C ~ 85°C
• Current - Output / Channel: 20mA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *LM2794TLX

www.national.com
Typical Performance Characteristics
= 3.6V, BRGT pin = 0V, R
Shutdown Supply Current vs V
Supply Current vs V
I
DIODE
V
SET
R
SET
SET
1-4 = 15mA
vs V
= 1KΩ
= 124Ω. (Continued)
BRGT
IN
20028506
20028513
20028514
IN
Unless otherwise specified, C1 = C2 = C
6
Duty Cycle vs. Led Current (LM2794)
Shutdown Threshold vs V
Supply Current vs V
I
I
DIODE
DIODE
1- 4 = 15mA
1-4 = Open
IN
= C
IN
IN
HOLD
20028515
20028505
20028532
= 1µF, V
IN