MIC23153 Datasheet, PDF (4/18 Pages) Micrel Semiconductor – 4MHz PWM 2A Buck Regulator with HyperLight Load™ and Power Good

Micrel Inc.
Typical Characteristics
Efficiency v s. Output Current
V_OUT = 1.8V @ 25°C
100%
90%
80%
70%
60%
50%
40%
VIN = 5V
VIN = 3V
VIN = 3.6V
30%
20%
10%
1
10
100
1000
OUT PUT CURRENT (mA)
10000
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.5
Current Limit
v s. Input Voltage
TCASE = 25°C
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLT AGE (V)
Line Regulation
(High Loads)
1.90
1.85
1.80
1.75
IOUT = 300mA
IOUT = 1A
1.70
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLT AGE (V)
Output Voltage
vs. Temperature
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
1.77
1.76
1.75
-40 -20
ILOAD = 20mA
0 20 40 60 80 100 120
T EM PERAT URE (°C)
December 2009
MIC23153
Efficiency v s. Output Current
V_OUT = 3.3V @ 25°C
100%
90%
80%
70%
60%
VIN = 4.2V
VIN = 5V
50%
VIN = 5.5V
40%
30%
20%
10%
0%
1
10
100
1000 10000
OUT PUT CURRENT (mA)
Shutdown Current
v s. Input Voltage
30
25
20
15
10
5
0
2.5
TCASE = 25°C
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLT AGE (V)
1.900
1.875
1.850
1.825
1.800
1.775
1.750
1.725
1.700
0
Output Voltage v s.
Output Current (HLL)
VIN = 3.6V
0.02 0.04 0.06 0.08 0.1
OUT PUT CURRENT (A)
PG Delay Tim e
v s. Input Voltage
90
80
70
PG Rising
60
50
40
30
20
PG Falling
10
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLT AGE (V)
4
1000000
100000
10000
1000
100
10
1
100
V_OUT Rise Tim e
v s. C_SS
VIN = 3.6V
1000 10000 100000 1000000
CSS (pF)
1.900
1.875
1.850
1.825
1.800
1.775
1.750
1.725
1.700
2.5
Line Regulation
(Low Loads)
IOUT = 20mA
IOUT = 1mA
IOUT = 130mA
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLT AGE (V)
Output Voltage v s.
Output Current (CCM)
1.900
1.875
1.850
1.825
1.800
1.775
1.750
1.725
1.700
VIN = 3.6V
0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9
OUT PUT CURRENT (A)
PG Thresholds
v s. Input Voltage
91%
90%
89%
PG Rising
88%
87%
86%
85%
84%
83%
PG Falling
82%
81%
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLT AGE (V)
M9999-121409-A