mic38150 Micrel Semiconductor, mic38150 Datasheet - Page 4

• Manufacturer Part Number: mic38150
• Description: Heldo 1.5a High Efficiency Low Dropout Regulator
• Manufacturer: Micrel Semiconductor

Typical Characteristics
V
Micrel, Inc.
September 2009
IN
= 3.3V, V
90
80
70
60
50
40
30
20
10
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0
10
0
-40 -20
3
OUT
v s. Load Current
100
3.5
Dropout Voltage
v s. Temperature
Enable Threshold
MIC38150 PSRR
Output Voltage
0
FREQUENCY (Hz)
LOAD CURRENT (A)
T EM PERAT URE (°C)
0.5
INPUT VOLTAGE (V)
= 1.8V, C
20
4
1000
40
4.5
60
V
V
I
V
OUT
IN
OUT
10000
OUT
1
OUT
= 3.3V
80
= 10mA
= 1.8V
= 3.3V
5
100 120
= 10µF, R
100000
5.5
1.5
LPF
= 25kΩ, I
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.0
0.8
0.6
0.4
0.2
0.0
60
50
40
30
20
10
0
-40
-40
3
0
OUT
-20
V
V
3.5
IN
OUT
10
Operating Current
0.3
Therm al Shutdown
v s. Temperature
vs. Input Voltage
Dropout Voltage
= 3.3V
= 100mA, unless noted
Load Regulation
0
= 1.8V
T EMPERAT URE (°C)
T EM PERAT URE (°C)
INPUT VOLTAGE (V)
LO AD CURRENT (A)
20
60
4
0.6
4
40
110
4.5
0.9
60
V
I
V
C
OUT
OUT
V
V
OUT
OUT
IN
OUT
= 1.5A
80
= 3.3V
= 3.3V
= 1.8V
= 20µF
= 1.8V
160
1.2
5
100 120
210
5.5
1.5
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
90
80
70
60
50
40
30
20
10
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
0
3
0
I
I
OUT
OUT
MIC38150 Efficiency
0.3
3.5
1
v s. Input Voltage
= 10mA
= 1.5A
vs. Input Voltage
Current Lim it
Output Voltage
LO AD CURRENT (A)
INPUT VO LT AG E (V)
INPUT VOLTAGE (V)
2
0.6
4
M9999-091109-B
3
0.9
4.5
V
C
R
V
V
R
V
IN
OUT
OUT
LPF
OUT
LPF
OUT
= 5.0V
4
= 1.8V
= 25kΩ
= 25kΩ
MIC38150
= 3.3V
= 20µF
= 1.8V
1.2
5
5
1.5
5.5