LM2794TLX National Semiconductor, LM2794TLX Datasheet - Page 3

• 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

I
V
I
I
I
I
I
I
V
V
V
V
I
R
I
DX
DX
DX
D-MATCH
Q
SD
PULL-SD
LEAK-SD
SET
DX
CP
CPH
IH
IL
BRGT
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Limits in standard typeface are for T
Range (−30˚C ≤ T
=124Ω ; LM2794:V
Symbol
V
SD
BRGT
Continuous Power Dissipation
(Note 2)
T
JMAX
IN
(Note 2)
Available Current at Output Dx
Available Voltage at Output Dx
Line Regulation of Dx Output
Current
Load Regulation of Dx Output
Current
Current Matching Between Any
Two Outputs
Quiescent Supply Current
Shutdown Supply Current
Shutdown Pull-Up Current
(LM2795)
Input Charge-Pump Mode To
Pass Mode Threshold
Input Charge-Pump Mode To
Pass Mode Hysteresis
SD Input Logic High (LM2794)
SD Input Logic High (LM2795)
SD Input Logic Low (LM2794)
SD Input Logic Low (LM2795)
SD Input Leakage Current
BRGT Input Resistance
I
SET
Pin Output Current
J
SD
≤ +100˚C). Unless otherwise specified, C1 = C2 = C
= V
Parameter
IN
(LM2795: V
J
−0.5 to (V
−0.5 to (V
= 25˚C and limits in boldface type apply over the full Operating Junction Temperature
SD
−0.5 to 6.2V max
Internally Limited
= 0V).
(Note 1)
IN
IN
3.0V ≤ V
V
BRGT = 50mV
2.7V ≤ V
V
BRGT = 0V
V
BRGT = 200mV
3.0V ≤ V
I
BRGT = 50mV
3.0V ≤ V
V
3.0V ≤ V
V
V
3.0V ≤ V
V
3.0V ≤ V
Load Current
R
3.0V ≤ V
V
(Note 5)
3.0V ≤ V
3.0V ≤ V
0V ≤ V
DX
+0.3V) w/
+0.3V) w/
6.2V max
6.2V max
DX
DX
DX
DX
DX
IN
IN
SET
IN
≤ 15mA
= 3.6V
= 3.6V, V
= 3.6V
135˚C
≤ 3.8V
≤ 3.6V
≤ 3.8V
= 3.6V
= 3.6V
= OPEN
SD
IN
IN
IN
IN
IN
DX
IN
IN
IN
IN
≤ V
Conditions
≤ 5.5V
≤ 3.0V
≤ 5.5V
≤ 5.5V
≤ 4.4V
≤ 4.2V, Active, No
≤ 5.5V, Shutdown
≤ 5.5V
≤ 5.5V
≤ 3.8V
DX
IN
3
= 3.6V
Operating Conditions
θ
Storge Temperature
Lead Temp. (Soldering, 5 sec.)
ESD Rating (Note 4)
Input Voltage (V
Ambient Temperature (T
Junction Temperature (T
JA
(Notes 2, 3)
Human Body Model
Machine Model
IN
= C
HOLD
IN
0.8V
= 1 µF, V
14.18
14.18
14.18
)
Min
3.8
1.0
15
10
20
IN
A
J
)
)
IN
I
15.25
15.25
15.25
= 3.6V, BRGT pin = 0V; R
DX
16.8
Typ
250
100
240
0.5
5.5
2.3
1.5
4.7
/10
0.2V
−65˚C to +150˚C
−30˚C to +100˚C
16.78
16.32
16.32
Max
−30˚C to +85˚C
8.2
0.2
5
2.7V to 5.5V
IN
www.national.com
125˚C/W
260˚C
200V
Units
2kV
mA
mA
mA
mA
mA
mA
mA
mV
mA
kΩ
µA
µA
nA
%
V
V
V
V
SET