Micrel MIC23099, User Manual

Page: 5 / 11

Micrel, Inc. MIC23099 Evaluation Board
Typical Characteristics
40
50
60
70
80
90
100
0.001 0.01 0.1
E
F
F
ICI
E
NCY
(
%
)
OUTPUT CURRENT (A)
Efficiency (V
IN
= 1.2V)
vs. Output Current
BOOST
V
OUT1
= 1.8V
BUCK
V
OUT2
= 1.0V
LED PIN = OPEN
L1 = IFSC1515AHER6R8M01
L2 = SPM4012T-4R7M
0.2
40
50
60
70
80
90
100
0.001 0.01
E
F
F
ICI
E
NCY
(
%
)
OUTPUT CURRENT (A)
Buck Efficiency (V
IN
= 1.8V)
vs. Output Current
V
IN
= 1.8V
V
OUT2
= 1.0V
T
A
= 25
⁰
C
L2 = SPM4012T-4R7M
L2 = CIG2MW4R7NNE
0.03
0.97
0.98
0.99
1
1.01
1.02
1.03
0 0.01 0.02 0.03
O
U
T
PU
T
VO
L
T
A
G
E
(V)
OUTPUT CURRENT (A)
Buck Output Voltage
vs. Output Current
V
IN
= 1.8V
V
OUT2
= 1.0V
T
A
= 25
⁰
C
PFM
-1.0%
-0.5%
0.0%
0.5%
1.0%
0 0.01 0.02 0.03
L
O
A
D RE
G
UL
A
T
IO
N (
%
)
OUTPUT CURRENT (A)
Buck Load Regulation
vs. Output Current
V
IN
= 1.8V
V
OUT2
= 1.0V
T
A
= 25
⁰
C
PFM
0.598
0.600
0.602
0.604
0.606
0.608
0.610
0.612
0.614
-50 -25 0 25 50 75 100 125
F
EED
B
A
C
K
VO
L
T
A
G
E
(V)
TEMPERATURE (°C)
Boost Feeback Voltage
vs. Temperature
V
IN
= 1.2V
T
A
= 25
⁰
C
PFM
I
OUT1
= 100uA
PWM
I
OUT1
= 100mA
-4.0%
-2.0%
0.0%
2.0%
0 0.04 0.08 0.12 0.16 0.2
L
O
A
D RE
G
UL
A
T
IO
N (
%
)
OUTPUT CURRENT (A)
Boost Output Voltage
vs. Output Current
V
IN
= 1.2V
V
OUT1
= 1.8V
T
A
= 25
⁰
C
PFM
PWM
1.75
1.76
1.77
1.78
1.79
1.80
1.81
1.82
1.83
1.84
0 0.04 0.08 0.12 0.16 0.2
O
U
T
PU
T
VO
L
T
A
G
E
(V)
OUTPUT CURRENT (A)
Boost Output Voltage
vs. Output Current
V
IN
= 1.2V
V
OUT1
= 1.8V
T
A
= 25
⁰
C
PWM
PFM
May 30, 2014 5 Revision 1.0