Datasheet

3.0 3.5 4.0 4.5 5.0 5.5
-0.10
-0.08
-0.06
-0.04
-0.02
0.00
0.02
0.04
0.06
0.08
0.10
ûOUTPUT VOLTAGE (%)
INPUT VOLTAGE (V)
IOUT = 0A
IOUT = 12A
3.0 3.5 4.0 4.5 5.0 5.5
1.0
1.1
1.2
1.3
1.4
1.5
I
PVIN
+ I
AVIN
(mA)
INPUT VOLTAGE (V)
0 3 6 9 12 15
-0.04
-0.03
-0.02
-0.01
0.00
0.01
0.02
0.03
0.04
ûOUTPUT VOLTAGE (%)
OUTPUT CURRENT (A)
VIN = 3.3V
VIN = 5.0V
0 3 6 9
12 15
90
92
94
96
98
100
EFFICIENCY (%)
OUTPUT CURRENT (A)
VIN = 3.3V
VIN = 4.0V
VIN = 5.0V
VIN = 5.5V
0 3 6 9
12 15
80
82
84
86
88
90
92
94
96
98
100
EFFICIENCY (%)
OUTPUT CURRENT (A)
FSW = 500 kHz
FSW = 750 kHz
FSW = 1 MHz
0 3 6 9
12 15
80
82
84
86
88
90
92
94
96
98
100
EFFICIENCY (%)
OUTPUT CURRENT (A)
VOUT = 1.2V
VOUT = 3.3V
LM21215A
SNOSB87B –MARCH 2011–REVISED MARCH 2013 www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise specified: V
VIN
= 5V, V
OUT
= 1.2V, L= 0.56µH (1.8mΩ R
DCR
), C
SS
= 33nF, f
SW
= 500 kHz, T
A
= 25°C for
efficiency curves, loop gain plots and waveforms, and T
J
= 25°C for all others.
Efficiency Efficiency
Figure 2. Figure 3.
Efficiency (VOUT = 2.5 V, f
SW
= 500 kHz , Inductor P/N
SER2010-601MLD) Load Regulation
Figure 4. Figure 5.
Line Regulation Non-Switching I
QTOTAL
vs. V
IN
Figure 6. Figure 7.
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