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PDF MIC49150-1.5BMM Data sheet ( Hoja de datos )
| Número de pieza | MIC49150-1.5BMM | |
| Descripción | 1.5A Low Voltage LDO Regulator w/Dual Input Voltages | |
| Fabricantes | Micrel Semiconductor | |
| Logotipo |  |
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MIC49150
Micrel
MIC49150
1.5A Low Voltage LDO Regulator w/Dual Input Voltages
Final Information
General Description
The MIC49150 is a high-bandwidth, low-dropout, 1.5A volt-
age regulator ideal for powering core voltages of low-power
microprocessors. The MIC49150 implements a dual supply
configuration allowing for very low output impedance and
very fast transient response.
The MIC49150 requires a bias input supply and a main input
supply, allowing for ultra-low input voltages on the main
supply rail. The input supply operates from 1.4V to 6.5V and
the bias supply requires between 3V and 6.5V for proper
operation. The MIC49150 offers fixed output voltages from
0.9V to 1.8V and adjustable output voltages down to 0.9V.
The MIC49150 requires a minimum of output capacitance for
stability, working optimally with small ceramic capacitors.
The MIC49150 is available in an 8-pin power MSOP package
and a 5-pin S-Pak. Its operating temperature range is –40°C
to +125°C.
Features
• Input Voltage Range:
VIN: 1.4V to 6.5V
VBIAS: 3.0V to 6.5V
• Stable with 1µF ceramic capacitor
• ±1% initial tolerance
• Maximum dropout voltage (VIN-VOUT) of 500mV over
temperature
• Adjustable output voltage down to 0.9V
• Ultra fast transient response (Up to 10MHz bandwidth)
• Excellent line and load regulation specifications
• Logic controlled shutdown option
• Thermal shutdown and current limit protection
• Power MSO-8 and S-Pak packages
• Junction temperature range: –40°C to 125°C
Applications
• Graphics processors
• PC Add-In Cards
• Microprocessor core voltage supply
• Low voltage digital ICs
• High Efficiency Linear power supplies
• SMPS post regulators
Typical Application
VIN = 1.8V
VBIAS = 3.3V
CBIAS = 1µF
Ceramic
MIC49150BR
IN OUT
BIAS ADJ
GND
VOUT = 1.0V
R1
R2 COUT = 1µF
Ceramic
CIN = 1µF
Ceramic
Low Voltage,
Fast Transient Response Regulator
Load Transient Response
VBIAS = 3.3V
VIN = 1.8V
VOUT = 1V
COUT = 1µF
TIME (10µs/div.)
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
January 2002
1
MIC49150
1 page  
MIC49150
Typical Characteristics
Power Supply Rejection Ratio
(Input Supply)
80
70
60
50
40 VBIAS = 3.3V
30 VIN = 1.8V
20 VOUT = 1.0V
10
IOUT = 1.5A
COUT = 1µF ceramic
0
0.01 0.1 1 10
100
FREQUENCY (kHz)
1000
Dropout Voltage
(Bias Supply)
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4 VIN = 2.5V
0.2 VOUT = 1.5V
0
OUTPUT CURRENT (mA)
Dropout Characteristics
(Input Voltage)
1.6
1.4
I = 10mA
OUT
1.2
1.0 I = 1.5A
OUT
0.8
0.6
0.4
VBIAS = 5V
0.2 VOUT = 1.5V
00 0.5 1 1.5 2
INPUT VOLTAGE (V)
2.5
Maximum Bias Current
vs. Bias Voltage
300
250
200
VADJ = 0V
IOUT = 1.5A
150 VIN = 2.5V
100
50
*Note: Maximum bias current is bias
current with input in dropout
0
3 3.5 4 4.5 5 5.5 6
BIAS VOLTAGE (V)
6.5
January 2002
Power Supply Rejection Ratio
(Bias Supply)
80
70
60
50
40 VBIAS = 3.3V
30 VIN = 1.8V
20 VOUT = 1.0V
10
IOUT = 1.5A
COUT = 1µF ceramic
0
0.01 0.1 1 10
100
FREQUENCY (kHz)
1000
Dropout Voltage
vs. Temperature
(Input Supply)
400
350
300
250
200
150
100 VBIAS = 5V
IOUT = 1.5A
50 VOUT = 1.5V
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE(°C)
Dropout Characteristics
(Bias Voltage)
1.6
1.4
1.2 I = 10mA
OUT
1.0
0.8 I = 1.5A
OUT
0.6
0.4
0.2
VIN = 2.5V
VOUT = 1.5V
00 1 2 3 4 5 6 7
BIAS VOLTAGE (V)
Maximum Bias Current
vs. Temperature
300
250
200
VBIAS = 5V
150 VADJ = 0V
100 VIN = 2.5V
50
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE(°C)
5
Micrel
Dropout Voltage
(Input Supply)
300
250
200
150
100
50 VBIAS = 5V
VOUT = 1.0V
0
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
(Bias Supply)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6 VIN = 2.5V
0.4 IOUT = 1.5A
0.2 VOUT = 1.5V
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE(°C)
1.505
1.504
1.503
1.502
1.501
1.500
1.499
1.498
1.497
1.496
1.495
Load Regulation
VBIAS = 5V
VIN = 2.5V
OUTPUT CURRENT (mA)
Bias Current
vs. Temperature
45
40
35
VIN = 2.5V
VOUT = 1.5V
VBIAS = 5V
30 I = 750mA
OUT
25
20
I = 100mA
15 OUT
I = 1500mA
OUT
10
5 I = 10mA
OUT
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
MIC49150
5 Page 
MIC49150
Package Information
0.122 (3.10)
0.112 (2.84)
0.036 (0.90)
0.032 (0.81)
0.199 (5.05)
0.187 (4.74)
DIMENSIONS:
INCH (MM)
0.120 (3.05)
0.116 (2.95)
0.043 (1.09)
0.038 (0.97)
0.012 (0.30) R
0.007 (0.18)
0.005 (0.13)
0.012 (0.3)
0.0256 (0.65) TYP
0.008 (0.20)
0.004 (0.10)
5° MAX
0° MIN
8-Lead MSOP (MM)
0.012 (0.03) R
0.039 (0.99)
0.035 (0.89)
0.021 (0.53)
0.040±0.010
1.015±0.255
0.370±0.005
9.395±0.125
0.355±0.005
9.015±0.125
0.256
6.50
0.315±0.005
8.000±0.130
0.415±0.005
10.54±0.130
0.075±0.005
1.905±0.125
0.010
0.250
0.040±0.005
1.015±0.125
0.003±0.002
0.080±0.050
INCHES
MILLIMETER
Micrel
0.067
1.700
0.028±0.003
0.710±0.080
0.010
0.250
5-Lead S-Pak (R)
0.036±0.005
0.915±0.125
0° min
6° max
January 2002
11
MIC49150
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MIC49150-1.5BMM.PDF ] | |
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