MIC38150_10 Datasheet, PDF (4/15 Pages) Micrel Semiconductor – HELDO® 1.5A High Efficiency Low Dropout Regulator

Micrel, Inc.
Typical Characteristics
V_IN = 3.3V, V_OUT = 1.8V, C_OUT = 10µF, R_LPF = 25kΩ, I_OUT = 100mA, unless noted
MIC38150 PSRR
Load Regulation
90
80
70
60
50
40
30
20
10
0
10
100
1000 10000 100000
FREQUENCY (Hz)
Output Voltage
vs. Temperature
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
-40 -20
VIN = 3.3V
IOUT = 10mA
0 20 40 60 80 100 120
T EM PERAT URE (°C)
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
0
VIN = 3.3V
VOUT = 1.8V
0.3
0.6
0.9
1.2
1.5
LO AD CURRENT (A)
Thermal Shutdown
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
VIN = 3.3V
0.2
VOUT = 1.8V
0.0
-40
10
60
110 160 210
T EMPERAT URE (°C)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
Dropout Voltage
vs. Load Current
VOUT = 3.3V
0.5
1
1.5
LOAD CURRENT (A)
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
3
Enable Threshold
VOUT = 1.8V
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
Dropout Voltage
vs. Temperature
1.0
0.8
0.6
0.4
0.2
0.0
-40 -20
VOUT = 3.3V
IOUT = 1.5A
0 20 40 60 80 100 120
T EM PERAT URE (°C)
Operating Current
vs. Input Voltage
60
50
40
30
20
10
0
3
VOUT = 1.8V
COUT = 20µF
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
June 2010
4
MIC38150
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
Output Voltage
vs. Input Voltage
IOUT = 10mA
IOUT = 1.5A
VOUT = 1.8V
1
2
3
4
5
INPUT VOLTAGE (V)
MIC38150 Efficiency
90
80
70
60
50
40
30
20
10
0
0
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
3
VIN = 5.0V
VOUT = 3.3V
RLPF = 25kΩ
0.3
0.6
0.9
1.2
1.5
LO AD CURRENT (A)
Current Lim it
v s. Input Voltage
VOUT= 1.8V
COUT = 20µF
RLPF = 25kΩ
3.5
4
4.5
5
5.5
INPUT VO LT AG E (V)
M9999-061010-C