MIC49150 [MICREL]
1.5A Low Voltage LDO Regulator w/Dual Input Voltages; 1.5A低压LDO稳压器瓦特/双输入电压
| 型号： | MIC49150 |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | 1.5A Low Voltage LDO Regulator w/Dual Input Voltages |
| 文件： | 总12页 (文件大小：97K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC49150
1.5A Low Voltage LDO Regulator w/Dual Input Voltages
Final Information
General Description
Features
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.
• Input Voltage Range:
V : 1.4V to 6.5V
IN
V
: 3.0V to 6.5V
BIAS
• Stable with 1µF ceramic capacitor
• ±1% initial tolerance
• Maximum dropout voltage (V -V
) of 500mV over
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.
IN OUT
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
The MIC49150 requires a minimum of output capacitance for
stability, working optimally with small ceramic capacitors.
• Junction temperature range: –40°C to 125°C
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.
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
Load Transient Response
MIC49150BR
VIN = 1.8V
VOUT = 1.0V
IN
OUT
R1
R2
VBIAS = 3.3V
VIN = 1.8V
VOUT = 1V
COUT = 1µF
V
BIAS = 3.3V
BIAS
ADJ
COUT = 1µF
Ceramic
CBIAS = 1µF
GND
Ceramic
CIN = 1µF
Ceramic
Low Voltage,
Fast Transient Response Regulator
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
MIC49150
Micrel
Ordering Information
Part Number
Output Current Voltage Temperature Range
Package
Power MSOP-8
Power MSOP-8
Power MSOP-8
S-Pak-5
MIC49150-0.9BMM
MIC49150-1.5BMM
MIC49150BMM
MIC49150-0.9BR
MIC49150-1.5BR
MIC49150BR
1.5A
1.5A
1.5A
1.5A
1.5A
1.5A
0.9V
1.5V
ADJ.
0.9V
1.5V
ADJ.
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
S-Pak-5
S-Pak-5
Other voltages available. Contact Micrel for details.
Pin Configuration
GND
GND
GND
GND
1
2
3
4
8
7
6
5
EN/ADJ.
VBIAS
5
VOUT
4 VIN
3 GND
2
VIN
VBIAS
1 EN/ADJ.
VOUT
5-Lead S-Pak (R)
Power MSOP-8 (MM)
Pin Description
MIC49150
MSOP8
MIC49150
S-Pak
Pin Name
Pin Function
1
1
Enable
Enable (Input): CMOS compatible input. Logic high = enable, logic low =
shutdown
ADJ.
VIN
Adjustable regulator feedback input. Connect to resistor voltage divider.
Input voltage which supplies current to the output power device.
Regulator Output
3
4
2
4
5
2
VOUT
VBIAS
Input Bias Voltage for powering all circuitry on the regulator with the excep-
tion of the output power device.
5/6/7/8
3
GND
Ground (TAB is connected to ground on S-Pak)
MIC49150
2
January 2002
MIC49150
Micrel
Absolute Maximum Ratings (Note 1)
Operating Ratings (Note 2)
Supply Voltage (V ) .......................................................8V
Supply Voltage (V ) ....................................... 1.4V to 6.5V
IN
IN
Bias Supply Voltage (V
)............................................8V
Bias Supply Voltage (V
)............................... 3V to 6.5V
BIAS
BIAS
Enable Input Voltage (V ) .............................................8V
Enable Input Voltage (V ) .................................. 0V to V
EN
EN IN
Power Dissipation .................................... Internally Limited
Junction Temperature Range............. –40°C ≤T ≤ +125°C
J
ESD Rating, Note 3 ...................................................... 2kV
Package Thermal Resistance
MSOP-8 (θ ) ......................................................80°C/W
JA
S-PAK(θ )............................................................2°C/W
JC
Electrical Characteristics
TA = 25°C with VBIAS = VOUT +2.1V; VIN = VOUT + 1V; bold values indicate –40°C < TJ < +125°C, Note 4; unless otherwise specified.
Parameter
Conditions
Min
Typ
Max
Units
Output Voltage Accuracy
At 25°C
Over temperature range
–1
–2
+1
+2
%
%
Line Regulation
Load Regulation
VIN = 3.0V to 6.5V
IL = 0mA to 1.5A
–0.1
0.01
0.2
+0.1
%/V
1
1.5
%
%
Dropout Voltage (VIN - VOUT
)
IL = 750mA
IL = 1.5A
130
280
200
300
400
500
mV
mV
mV
mV
Dropout Voltage (VBIAS - VOUT
Note 4
)
IL = 750mA
IL = 1.5A
1.3
1.65
V
V
V
1.9
2.1
Ground Pin Current, Note 5
IL = 0mA
IL = 1.5A
15
15
mA
mA
mA
25
30
Ground Pin Current in Shutdown
Current thru VBIAS
V
EN ≤ 0.6V, (IBIAS + ICC), Note 6
0.5
9
1
2
µA
µA
IL = 0mA
15
25
mA
mA
mA
IL = 1.5A
32
Current Limit
MIC49150
1.6
2.3
3.5
4
A
A
Enable Input, Note 6
Enable Input Threshold
(Fixed Voltage only)
Regulator enable
Regulator shutdown
1.6
V
V
0.6
Enable Pin Input Current
Reference
Independent of state
0.1
0.9
1
µA
Reference Voltage
0.891
0.882
0.909
0.918
V
V
Note 1. Exceeding the absolute maximum rating may damage the device.
Note 2. The device is not guaranteed to function outside its operating rating.
Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
Note 4. For V ≤1V, V dropout specification does not apply due to a minimum 3V V input.
OUT
BIAS
BIAS
Note 5.
I
= I
+ (I – I
). At high loads, input current on V will be less than the output current, due to drive current being supplied by V
.
GND
BIAS
IN
OUT
IN
BIAS
Note 6. Fixed output voltage versions only.
January 2002
3
MIC49150
MIC49150
Micrel
Functional Diagram
VBIAS
VIN
Ilimit
VEN ADJ
/
Fixed
Bandgap
Enable
Adj.
VOUT
VIN Open
Circuit
R1
R2
Fixed
MIC49150
4
January 2002
MIC49150
Micrel
Typical Characteristics
Power Supply Rejection Ratio
Power Supply Rejection Ratio
Dropout Voltage
(Input Supply)
(Input Supply)
(Bias Supply)
80
80
300
250
200
150
100
50
70
60
50
70
60
50
40
40
VBIAS = 3.3V
VBIAS = 3.3V
30
20
10
0
30
20
10
0
VIN = 1.8V
VOUT = 1.0V
IOUT = 1.5A
COUT = 1µF ceramic
VIN = 1.8V
VOUT = 1.0V
IOUT = 1.5A
COUT = 1µF ceramic
VBIAS = 5V
VOUT = 1.0V
0
0.01 0.1
1
10
100 1000
0.01 0.1
1
10
100 1000
FREQUENCY (kHz)
FREQUENCY (kHz)
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Temperature
(Input Supply)
Dropout Voltage
vs. Temperature
(Bias Supply)
Dropout Voltage
(Bias Supply)
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
400
350
300
250
200
150
100
50
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
VBIAS = 5V
IOUT = 1.5A
VOUT = 1.5V
VIN = 2.5V
VIN = 2.5V
VOUT = 1.5V
IOUT = 1.5A
VOUT = 1.5V
0
-40 -20
0
20 40 60 80 100 120
-40 -20
0
20 40 60 80 100 120
TEMPERATURE(°C)
TEMPERATURE(°C)
OUTPUT CURRENT (mA)
Dropout Characteristics
(Input Voltage)
Dropout Characteristics
(Bias Voltage)
Load Regulation
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1.505
1.504
1.503
1.502
1.501
1.500
1.499
1.498
1.497
1.496
1.495
IOUT = 10mA
IOUT = 10mA
IOUT = 1.5A
IOUT = 1.5A
VBIAS = 5V
VBIAS = 5V
VIN = 2.5V
VIN = 2.5V
VOUT = 1.5V
VOUT = 1.5V
0
0.5
1
1.5
2
2.5
0
1
2
3
4
5
6
7
INPUT VOLTAGE (V)
BIAS VOLTAGE (V)
OUTPUT CURRENT (mA)
Maximum Bias Current
vs. Bias Voltage
Bias Current
Maximum Bias Current
vs. Temperature
vs. Temperature
45
40
35
30
25
20
15
10
5
300
250
200
150
100
50
300
250
200
150
100
50
VIN = 2.5V
V
OUT = 1.5V
BIAS = 5V
V
VADJ = 0V
IOUT = 750mA
IOUT = 100mA
I
OUT = 1.5A
IN = 2.5V
VBIAS = 5V
VADJ = 0V
VIN = 2.5V
V
IOUT = 1500mA
*Note: Maximum bias current is bias
current with input in dropout
IOUT = 10mA
20 40 60 80 100 120
0
0
0
-40 -20
0
3
3.5
4
4.5
5
5.5
6
6.5
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
BIAS VOLTAGE (V)
TEMPERATURE(°C)
January 2002
5
MIC49150
MIC49150
Micrel
Bias Current
vs. Output Current
Ground Current
vs. Bias Voltage
Bias Current
vs. Bias Voltage
50
40
30
20
10
0
14
12
10
8
14
12
10
8
IBIAS
VBIAS = 5V
VIN = 2.5V
VOUT = 1.5V
IBIAS
6
6
IOUT = 100mA
VIN = 2.5V
VOUT = 1.5V
IOUT = 0mA
VIN = 2.5V
VOUT = 1.5V
4
4
2
2
0
0
3
3.5
4
4.5
5
5.5
6
6.5
6.5
6.4
3
3.5
4
4.5
5
5.5
6
6.5
BIAS VOLTAGE (V)
BIAS VOLTAGE (V)
OUTPUT CURRENT (mA)
Bias Current
vs. Bias Voltage
Bias Current
vs. Bias Voltage
Bias Current
vs. Input Voltage
20
18
16
14
12
10
8
50
40
30
20
10
0
50
40
30
20
10
0
VBIAS = 5V
VOUT = 1.5V
IOUT = 750mA
VIN = 2.5V
VOUT = 1.5V
IBIAS
IOUT = 100mA
IBIAS
IOUT = 0mA
IOUT = 1500mA
VIN = 2.5V
VOUT = 1.5V
6
4
2
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
3
3.5
4
4.5
5
5.5
6
INPUT VOLTAGE (V)
BIAS VOLTAGE (V)
BIAS VOLTAGE (V)
Bias Current
vs. Input Voltage
Reference Voltage
vs. Input Voltage
Reference Voltage
vs. Bias Voltage
300
0.901
0.900
0.899
0.901
0.900
0.899
VBIAS = 5V
1500mA
250 VOUT = 1.5V
VBIAS = 5V
VIN = 2.5V
200
750mA
150
100
50
0
0
0.5
1
1.5
2
2.5
1.4
2.4
3.4
4.4
5.4
3
3.5
4
4.5
5
5.5
6
6.5
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
BIAS VOLTAGE (V)
Short Circuit Current
vs. Temperature
Enable Threshold
vs. Bias Voltage
Output Voltage
vs. Temperature
1.55
3.0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
VBIAS = 5V
VIN = 2.5V
1.54
1.53
1.52
1.51
1.50
1.49
1.48
1.47
1.46
1.45
ON
2.5
2.0
1.5
1.0
0.5
0
OFF
VBIAS = 5V
VIN = 2.5V
VOUT = 0V
VIN = 2.5V
-40 -20
0
20 40 60 80 100 120
-40 -20
0
20 40 60 80 100 120
3
3.5
4
4.5
5
5.5
6
6.5
TEMPERATURE (°C)
TEMPERATURE (°C)
BIAS VOLTAGE (V)
MIC49150
6
January 2002
MIC49150
Micrel
Enable Threshold
vs. Temperature
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
ON
OFF
VBIAS = 5V
VIN = 2.5V
-40 -20
0
20 40 60 80 100 120
TEMPERATURE (°C)
Functional Characteristics
Bias Voltage
Line Transient Response
Load Transient Response
VBIAS = 3.3V
V
BIAS = 6.5V
VIN = 1.8V
VOUT = 1V
COUT = 1µF ceramic
VBIAS = 3.3V
VIN = 1.8V
VOUT = 1V
COUT = 1µF ceramic
IOUT = 1.5A
TIME (10µs/div.)
TIME (400µs/div.)
Input Voltage
Line Transient Response
VIN = 6.5V
V
IN = 1.8V
VBIAS = 3.3V
VOUT = 1V
COUT = 1µF ceramic
IOUT = 1.5A
TIME (400µs/div.)
January 2002
7
MIC49150
MIC49150
Micrel
Input Capacitor
Applications Information
An input capacitor of 1µF or greater is recommended when
the device is more than 4 inches away from the bulk supply
capacitance, or when the supply is a battery. Small, surface-
mount, ceramic chip capacitors can be used for the bypass-
ing. The capacitor should be placed within 1" of the device for
optimal performance. Larger values will help to improve
ripplerejectionbybypassingtheinputtotheregulator, further
improving the integrity of the output voltage.
The MIC49150 is an ultra-high performance, low dropout
linear regulator designed for high current applications requir-
ing fast transient response. The MIC49150 utilizes two input
supplies, significantly reducing dropout voltage, perfect for
low-voltage, DC-to-DC conversion. The MIC49150 requires
a minimum of external components and obtains a bandwidth
of up to 10MHz. As a µCap regulator, the output is tolerant of
virtually any type of capacitor including ceramic type and
tantalum type capacitors.
Thermal Design
Linear regulators are simple to use. The most complicated
design parameters to consider are thermal characteristics.
Thermal design requires the following application-specific
parameters:
The MIC49150 regulator is fully protected from damage due
to fault conditions, offering linear current limiting and thermal
shutdown.
Bias Supply Voltage
• Maximum ambient temperature (T )
A
V
, requiring relatively light current, provides power to the
BIAS
• Output Current (I
)
control portion of the MIC49150. V
requires approxi-
OUT
BIAS
mately 33mA for a 1.5A load current. Dropout conditions
require higher currents. Most of the biasing current is used to
supply the base current to the pass transistor. This allows the
pass element to be driven into saturation, reducing the
dropout to 300mVat a 1.5A load current. Bypassing on the
bias pin is recommended to improve performance of the
regulator during line and load transients. Small ceramic
• Output Voltage (V
)
OUT
• Input Voltage (V )
IN
• Ground Current (I
)
GND
First, calculate the power dissipation of the regulator from
thesenumbersandthedeviceparametersfromthisdatasheet.
P = V × I + V
× I
– V
× I
D
IN
IN
BIAS
BIAS
OUT OUT
capacitors from V
to ground help reduce high frequency
BIAS
The input current will be less than the output current at high
output currents as the load increases. The bias current is a
sum of base drive and ground current. Ground current is
constant over load current. Then the heat sink thermal
resistance is determined with this formula:
noise from being injected into the control circuitry from the
bias rail and are good design practice. Good bypass tech-
niques typically include one larger capacitor such as a 1µF
ceramic and smaller valued capacitors such as 0.01µF or
0.001µF in parallel with that larger capacitor to decouple the
bias supply. The V
output voltage with a minimum V
input voltage must be 1.6V above the
BIAS
T
– T
J(MAX)
A
input voltage of 3 volts.
θ
=
BIAS
SA
P – θ + θ
(
)
D
JC
CS
Input Supply Voltage
V
provides the high current to the collector of the pass
The heat sink may be significantly reduced in applications
where the maximum input voltage is known and large com-
pared with the dropout voltage. Use a series input resistor to
drop excessive voltage and distribute the heat between this
resistor and the regulator. The low dropout properties of the
MIC49150 allow significant reductions in regulator power
dissipation and the associated heat sink without compromis-
ingperformance. Whenthistechniqueisemployed, acapaci-
tor of at least 1µF is needed directly between the input and
regulator ground. Refer to Application Note 9 for further
details and examples on thermal design and heat sink speci-
fication.
IN
transistor. The minimum input voltage is 1.4V, allowing
conversion from low voltage supplies.
Output Capacitor
The MIC49150 requires a minimum of output capacitance to
maintain stability. However, proper capacitor selection is
importanttoensuredesiredtransientresponse.TheMIC49150
is specifically designed to be stable with virtually any capaci-
tance value and ESR. A 1µF ceramic chip capacitor should
satisfy most applications. Output capacitance can be in-
creased without bound. See typical characteristics for ex-
amples of load transient response.
Minimum Load Current
X7R dielectric ceramic capacitors are recommended be-
cause of their temperature performance. X7R-type capaci-
tors change capacitance by 15% over their operating tem-
perature range and are the most stable type of ceramic
capacitors. Z5U and Y5V dielectric capacitors change value
byasmuchas50%and60%respectivelyovertheiroperating
temperature ranges. To use a ceramic chip capacitor with
Y5V dielectric, the value must be much higher than an X7R
ceramic or a tantalum capacitor to ensure the same capaci-
tance value over the operating temperature range. Tantalum
capacitors have a very stable dielectric (10% over their
operating temperature range) and can also be used with this
device.
The MIC49150, unlike most other high current regulators,
does not require a minimum load to maintain output voltage
regulation.
Power MSOP-8 Thermal Characteristics
One of the secrets of the MIC49150’s performance is its
powerMSOP-8packagefeaturinghalfthethermalresistance
of a standard MSOP-8 package. Lower thermal resistance
means more output current or higher input voltage for a given
package size.
MIC49150
8
January 2002
MIC49150
Micrel
900
800
700
600
500
400
300
200
100
0
Lower thermal resistance is achieved by joining the four
ground leads with the die attach paddle to create a single-
piece electrical and thermal conductor. This concept has
been used by MOSFET manufacturers for years, proving
very reliable and cost effective for the user.
Thermal resistance consists of two main elements, θ
JC
(junction-to-casethermalresistance)andθ (case-to-ambi-
CA
ent thermal resistance). See Figure 1. θ is the resistance
JC
from the die to the leads of the package. θ is the resistance
CA
0
0.25 0.50 0.75 1.00 1.25 1.50
POWER DISSIPATION (W)
from the leads to the ambient air and it includes θ (case-to-
CS
sink thermal resistance) and θ
resistance).
(sink-to-ambient thermal
SA
Figure 2. Copper Area vs. Power-MSOP
Power Dissipation (∆T
)
JA
Using the power MSOP-8 reduces the θ dramatically and
JC
900
allows the user to reduce θ . The total thermal resistance,
CA
T
= 125°C
85°C
800
700
600
500
400
300
200
100
0
J
θ
(junction-to-ambient thermal resistance) is the limiting
JA
50°C 25°C
factor in calculating the maximum power dissipation capabil-
ity of the device. Typically, the power MSOP-8 has a θ of
80°C/W, this is significantly lower than the standard MSOP-8
JA
which is typically 160°C/W. θ is reduced because pins 5
CA
through 8 can now be soldered directly to a ground plane
which significantly reduces the case-to-sink thermal resis-
tance and sink to ambient thermal resistance.
0
0.25 0.50 0.75 1.00 1.25 1.50
POWER DISSIPATION (W)
Low-dropout linear regulators from Micrel are rated to a
maximum junction temperature of 125°C. It is important not
to exceed this maximum junction temperature during opera-
tionofthedevice.Topreventthismaximumjunctiontempera-
ture from being exceeded, the appropriate ground plane heat
sink must be used.
Figure 3. Copper Area vs. Power-MSOP
Power Dissipation (T )
A
∆T = T
– T
A(max)
J(max)
T
T
= 125°C
J(max)
A(max)
= maximum ambient operating temperature
MSOP-8
Forexample, themaximumambienttemperatureis50°C, the
∆T is determined as follows:
∆T = 125°C – 50°C
∆T = 75°C
Using Figure 2, the minimum amount of required copper can
be determined based on the required power dissipation.
Power dissipation in a linear regulator is calculated as fol-
lows:
θJA
ground plane
heat sink area
θJC
θCA
AMBIENT
P = V × I + V
× I
– V
× I
D
IN
IN
BIAS
BIAS
OUT OUT
printed circuit board
Using a typical application of 750mA output current, 1.2V
output voltage, 1.8V input voltage and 3.3V bias voltage, the
power dissipation is as follows:
Figure 1. Thermal Resistance
Figure 2 shows copper area versus power dissipation with
each trace corresponding to a different temperature rise
above ambient.
P = (1.8V) × (730mA) + 3.3V(30mA) – 1.2V(750mA)
D
At full current, a small percentage of the output current is
supplied from the bias supply, therefore the input current is
less than the output current.
From these curves, the minimum area of copper necessary
for the part to operate safely can be determined. The maxi-
mum allowable temperature rise must be calculated to deter-
mine operation along which curve.
P = 513mW
D
From Figure 2, the minimum current of copper required to
2
operate this application at a ∆T of 75°C is less than 100mm .
January 2002
9
MIC49150
MIC49150
Micrel
Quick Method
Enable
Determine the power dissipation requirements for the design
along with the maximum ambient temperature at which the
device will be operated. Refer to Figure 3, which shows safe
operating curves for three different ambient temperatures:
25°C, 50°C and 85°C. From these curves, the minimum
amount of copper can be determined by knowing the maxi-
mum power dissipation required. If the maximum ambient
temperature is 50°C and the power dissipation is as above,
513mW, the curve in Figure 3 shows that the required area of
ThefixedoutputvoltageversionsoftheMIC49150featurean
active high enable input (EN) that allows on-off control of the
regulator. Current drain reduces to “zero” when the device is
shutdown, with only microamperes of leakage current. The
EN input has TTL/CMOS compatible thresholds for simple
logic interfacing. EN may be directly tied to V and pulled up
IN
to the maximum supply voltage
2
copper is less than 100mm .
The θ of this package is ideally 80°C/W, but it will vary
JA
depending upon the availability of copper ground plane to
which it is attached.
Adjustable Regulator Design
The MIC49150 adjustable version allows programming the
outputvoltageanywherebetween0.9Vand5V. Tworesistors
areused. TheresistorvaluebetweenV
andtheadjustpin
OUT
should not exceed 10kΩ. Larger values can cause instability.
The resistor values are calculated by:
V
OUT
R1= R2 ×
–1
0.9
Where V
is the desired output voltage.
OUT
MIC49150
10
January 2002
MIC49150
Micrel
Package Information
0.122 (3.10)
0.112 (2.84)
0.199 (5.05)
0.187 (4.74)
DIMENSIONS:
INCH (MM)
0.120 (3.05)
0.116 (2.95)
0.036 (0.90)
0.032 (0.81)
0.043 (1.09)
0.038 (0.97)
0.012 (0.30) R
0.007 (0.18)
0.005 (0.13)
0.008 (0.20)
0.004 (0.10)
5° MAX
0° MIN
0.012 (0.3)
0.012 (0.03) R
0.039 (0.99)
0.0256 (0.65) TYP
0.035 (0.89)
0.021 (0.53)
8-Lead MSOP (MM)
0.370±0.005
9.395±0.125
0.355±0.005
9.015±0.125
0.075±0.005
1.905±0.125
0.040±0.010
1.015±0.255
0.256
6.50
0.010
0.250
0.040±0.005
1.015±0.125
INCHES
MILLIMETER
0.315±0.005
8.000±0.130
0.415±0.005
10.54±0.130
0.003±0.002
0.080±0.050
0.010
0.250
0.067
1.700
0.028±0.003
0.710±0.080
0.036±0.005
0.915±0.125
0° min
6° max
5-Lead S-Pak (R)
January 2002
11
MIC49150
MIC49150
Micrel
MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
© 2002 Micrel Incorporated
MIC49150
12
January 2002
相关型号：
MIC49150-0.9YMMTR
0.9V FIXED POSITIVE LDO REGULATOR, 0.5V DROPOUT, PDSO8, ROHS COMPLIANT, MSOP-8
MICROCHIP
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