C
IN
1
P
F
3/2× Charge Pump
C1
1
P
F
C2
1
P
F
C
POUT
1
P
F
EN
ENA
ENB
C1+
C1-
C2+
C2-
P
OUT
D1A
D2A
D3A
D4A
D1B
D2B
D3B
I
SET
V
IN
V
IN
2.7V to 5.5V
R
SET
or R
SET
¶
GND
LM2796
LEDS_ON
EN
ENA
ENB
D1A-D4A
D1B-D3B
+
-
+
-
+
-
Schematic
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2
Schematic
3
Bill of Materials
Component
Value
Package
Dimensions
Temperature
Manufacturer
Part #
Symbol
[U.S. (Metric)]
(mm)
Characteristic
LM2796
--
YZR0018
2.1 x 2.4 x 0.6
--
Texas
LM2796
DSBGA
Instruments
Cin, Cout
2.2µF, 6.3V
0603 (1608)
1.6 x 0.8 x 0.8
X5R
TDK
C1608X5R0J225K
C1, C2
1µF, 10V
0603 (1608)
1.6 x 0.8 x 0.8
X5R
TDK
C1608X5R1A105K
Dxx
White LEDs
--
1.5 x 2.3 x 1.4
--
OSRAM
LWM67C-T1U1-3C5D
Rset
8.3k
Ω
0603 (1608)
1.6 x 0.8 x 0.8
--
Vishay-Dale
CRCW06048251F
Rset'
(optional)
--
--
--
--
--
4
AN-1321 LM2796 Evaluation Board
SNVA086A – May 2004 – Revised April 2013
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