MIC5216-3.6BMMT&R_技术文档

MIC5216

Micrel

MIC5216

500mA-Peak Output LDO Regulator

Preliminary Information

General Description

Features

The MIC5216 is an efficient linear voltage regulator with high

peak output current capability, very low dropout voltage, and

better than 1% output voltage accuracy. Dropout is typically

10mV at light loads and less than 500mV at full load.

• Error Flag indicates undervoltage fault

• Guaranteed 500mA-peak output over the full operating

temperature range

• Low 500mV maximum dropout voltage at full load

• Extremely tight load and line regulation

• Tiny SOT-23-5 and MM8™ power MSOP-8 package

• Low-noise output

• Low temperature coefficient

• Current and thermal limiting

• Reversed-battery protection

• CMOS/TTL-compatible enable/shutdown control

• Near-zero shutdown current

TheMIC5216isdesignedtoprovideapeakoutputcurrentfor

startup conditions where higher inrush current is demanded.

It features a 500mA peak output rating. Continuous output

current is limited only by package and layout.

TheMIC5216hasaninternalundervoltagemonitorwithaflag

output. ItalsocanbeenabledorshutdownbyaCMOSorTTL

compatiblesignal.Whendisabled,powerconsumptiondrops

nearly to zero. Dropout ground current is minimized to help

prolong battery life. Other key features include reversed-

battery protection, current limiting, overtemperature shut-

down, and low noise performance.

Applications

• Laptop, notebook, and palmtop computers

• Cellular telephones and battery-powered equipment

• Consumer and personal electronics

The MIC5216 is available in fixed output voltages in space-

saving SOT-23-5 and MM8™ 8-lead power MSOP pack-

ages. For higher power requirements see the MIC5209 or

MIC5237.

• PC Card V and V regulation and switching

CC

PP

• SMPS post-regulator/dc-to-dc modules

• High-efficiency linear power supplies

Ordering Information

Part Number

Marking

—

Volts

3.0V

3.3V

3.6V

5.0V

3.0V

3.3V

3.6V

5.0V

Junction Temp. Range

–40°C to +125°C

Package

MSOP-8

SOT-23-5

MIC5216-3.0BMM

MIC5216-3.3BMM

MIC5216-3.6BMM

MIC5216-5.0BMM

MIC5216-3.0BM5

MIC5216-3.3BM5

MIC5216-3.6BM5

MIC5216-5.0BM5

—

LH30

LH33

LH36

LH50

Typical Applications

MIC5216-5.0BMM

1

2

3

4

8

7

6

5

MIC5216-3.3BM5

V_IN

6V

V_IN

4V

V_OUT

3.3V

1

2

3

5

100k

1.0µF

Flag

4

tantalum

ENABLE

SHUTDOWN

V_OUT

5V

Flag

1.0µF

tantalum

3.3V Low-Noise Regulator

5V Low-Noise Regulator

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 2000

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MIC5216

Micrel

Pin Configuration

EN GND IN

EN

IN

GND

1

2

3

4

8

7

6

5

3

2

1

LHxx

OUT

FLG

4

5

FLG

OUT

MIC5216-x.xBMM

MM8™ MSOP-8

Fixed Voltages

MIC5216-x.xBM5

SOT-23-5

Fixed Voltages

Pin Description

Pin No.

Pin Name

Pin Function

MSOP-8

SOT-23-5

2

5–8

3

1

2

5

3

IN

Supply Input

GND

OUT

EN

Ground: MSOP-8 pins 5 through 8 are internally connected.

Regulator Output

1

Enable (Input): CMOS compatible control input. Logic high = enable; logic

low or open = shutdown.

4

FLG

Error Flag (Output): Open-Collector output. Active low indicates an output

undervoltage condition.

Absolute Maximum Ratings

Operating Ratings

Supply Input Voltage (V ) ............................ –20V to +20V

Supply Input Voltage (V ) ........................... +2.5V to +12V

IN

Power Dissipation (P ) ............................ Internally Limited

Enable Input Voltage (V ) .................................. 0V to V

D

EN

IN

Junction Temperature (T ) ....................... –40°C to +125°C

J

Lead Temperature (Soldering, 5 sec.) ...................... 260°C

Package Thermal Resistance ...........................see Note 1

MIC5216

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MIC5216

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Electrical Characteristics

V_IN= V_OUT+ 1.0V; C_OUT= 4.7µF, I_OUT= 100µA; T_J= 25°C, bold values indicate –40°C ≤ T_J≤ +125°C; unless noted.

Symbol

Parameter

Conditions

Min Typical Max

Units

V_OUT

Output Voltage Accuracy

variation from nominal V_OUT

–1

–2

1

2

%

∆V_OUT/∆T

Output Voltage

Temperature Coefficient

Note 2

40

0.009

0.05

10

ppm/°C

%/V

%

∆V_OUT/V_OUTLine Regulation

V_IN= V_OUT+ 1V to 12V

I_OUT= 100µA to 500mA Note 3

I_OUT= 100µA

0.05

0.1

∆V_OUT/V_OUTLoad Regulation

0.5

0.7

V_IN– V_OUT

Dropout Voltage, Note 4

60

80

mV

µA

I

_OUT= 50mA

115

165

300

80

175

250

I_OUT= 150mA

I_OUT= 500mA

300

400

500

600

I_GND

Ground Pin Current, Notes 5, 6

V_EN≥ 3.0V, I_OUT= 100µA

V_EN≥ 3.0V, I_OUT= 50mA

V_EN≥ 3.0V, I_OUT= 150mA

V_EN≥ 3.0V, I_OUT= 500mA

130

170

350

1.8

650

900

µA

2.5

3.0

mA

8

20

25

Ground Pin Quiescent Current,

Note 6

V

_EN≤ 0.4V

0.05

0.10

75

3

8

µA

V

_EN≤ 0.18V

PSRR

Ripple Rejection

Current Limit

f = 120Hz

dB

I_LIMIT

V_OUT= 0V

700

0.05

500

1000

mA

∆V_OUT/∆P_D

e_no

Thermal Regulation

Output Noise

Note 7

%/W

nV/ Hz

I_OUT= 50mA, C_OUT= 2.2µF

ENABLE Input

V_ENL

Enable Input Voltage

Enable Input Current

V_EN= logic low (regulator shutdown)

V_EN= logic high (regulator enabled)

0.4

0.18

V

V_ENH

I_ENL

2.0

V

V_ENL≤ 0.4V

V_ENL≤ 0.18V

V_ENH≥ 2.0V

0.01

5

–1

–2

µA

I_ENH

20

25

Error Flag Output

V_ERR

Flag Threshold

undervoltage condition (below nominal)

Note 8

–2

–1

–6

–10

%

V_IL

I_FL

Output Logic-Low Voltage

Flag Leakage Current

I_L= 1mA, undervoltage condition

flag off, V_FLAG= 0V to 12V

0.2

0.1

0.4

V

+1

µA

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MIC5216

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Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when

operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction

temperature, T

, the junction-to-ambient thermal resistance, θ , and the ambient temperature, T . The maximum allowable power

J(max)

JA

A

dissipation at any ambient temperature is calculated using: P

= (T

– T ) ÷ θ . Exceeding the maximum allowable power dissipa-

D(max)

J(max)

A

JA

tion will result in excessive die temperature, and the regulator will go into thermal shutdown. See Table 1 and the “Thermal Considerations”

section for details.

Note 2: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.

Note 3: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load

range from 100mA to 500mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.

Note 4: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V

differential.

Note 5: Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of

the load current plus the ground pin current.

Note 6:

V

is the voltage externally applied to devices with the EN (enable) input pin.

EN

Note 7: Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line

regulation effects. Specifications are for a 500mA load pulse at V = 12V for t = 10ms.

IN

Note 8: The error flag comparator includes 3% hysteresis.

Block Diagrams

OUT

IN

V_IN

V_OUT

Current Limit

Threshold Shutdown

C_OUT

Bandgap

Ref.

V_REF

EN

FLG

Flag

60mV

Error

Comparator

MIC5216-x.xBM5/MM

GND

MIC5216 Fixed Regulator with External Components

MIC5216

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MIC5216

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Typical Characteristics

Power Supply

Rejection Ratio

Power Supply

Rejection Ratio

Power Supply

Rejection Ratio

0

-20

0

-20

V_IN= 6V

V_OUT= 5V

V_IN= 6V

_OUT= 5V

V

_OUT= 5V

V

-20

-40

-60

I_OUT= 100mA

_OUT= 1µF

-80

I_OUT= 100µA

_OUT= 1µF

I_OUT= 1mA

_OUT= 1µF

C

-100

1E+11E+21E1+k311E0+k41E+51E1M+6 E+7

10 100 100k

10M

10 100

100k

10M

10 100

100k

10M

FREQUENCY (Hz)

Power Supply Ripple Rejection

vs. Voltage Drop

Noise Performance

60

10

1

10

1

500mA pending

1mA

10mA, C_OUT= 1µF

50

40

30

20

10

0

100mA

10mA

0.1

10mA

I_OUT= 100mA

500mA Pending

V_OUT= 5V

500mA Pending

0.01

0.001

0.0001

0.01

0.001

0.0001

1mA

C

_OUT= 10µF

electrolytic

C_OUT= 1µF

V_OUT= 5V

0

0.1

0.2

0.3

0.4

10

1E+11E+21E1+k31E+41E+51E+61E+7

10

1k 10k 100k 1M 10M

1E+111E0+021E+31E+41E+51E+61E+7

FREQUENCY (Hz)

100 10k 100k 1M 10M

VOLTAGE DROP (V)

FREQUENCY (Hz)

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MIC5216

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T

is the maximum junction temperature of the die,

Applications Information

J(MAX)

125°C, and T is the ambient operating temperature. θ is

layout dependent; table 1 shows examples of thermal resis-

tance, junction-to-ambient, for the MIC5216.

A

JA

TheMIC5216isdesignedfor150mAto200mAoutputcurrent

applications where a high current spike (500mA) is needed

for short, startup conditions. Basic application of the device

will be discussed initially followed by a more detailed discus-

sion of higher current applications.

Package

θ_JARecommended θ_JA1" Square

θ_JC

Minimum Footprint Copper Clad

MM8™ (MM)

160°C/W

220°C/W

70°C/W

30°C/W

Enable/Shutdown

Forcing EN (enable/shutdown) high (> 2V) enables the regu-

lator. EN is compatible with CMOS logic. If the enable/

shutdown feature is not required, connect EN to IN (supply

input). See Figure 5.

SOT-23-5 (M5)

170°C/W

130°C/W

Table 1. MIC5216 Thermal Resistance

The actual power dissipation of the regulator circuit can be

determined using one simple equation.

Input Capacitor

P = (V – V

) I

+ V I

IN GND

A 1µF capacitor should be placed from IN to GND if there is

morethan10inchesofwirebetweentheinputandtheacfilter

capacitor or if a battery is used as the input.

D

IN

OUT OUT

Substituting P

for P and solving for the operating

D(MAX)

D

conditions that are critical to the application will give the

maximum operating conditions for the regulator circuit. For

example, if we are operating the MIC5216-3.3BM5 at room

temperature, with a minimum footprint layout, we can deter-

mine the maximum input voltage for a set output current.

Output Capacitor

An output capacitor is required between OUT and GND to

prevent oscillation. 1µF minimum is recommended. Larger

values improve the regulator’s transient response. The out-

put capacitor value may be increased without limit.

125°C – 25°C

(

)

P

=

D(MAX)

The output capacitor should have an ESR (equivalent series

resistance) of about 5Ω or less and a resonant frequency

above 1MHz. Ultralow-ESR capacitors could cause oscilla-

tion and/or underdamped transient response. Most tantalum

or aluminum electrolytic capacitors are adequate; film types

will work, but more expensive. Many aluminum electrolytics

have electrolytes that freeze at about –30°C, so solid tanta-

lums are recommended for operation below –25°C.

220°C/W

= 455mW

P

D(MAX)

The thermal resistance, junction-to-ambient, for the mini-

mum footprint is 220°C/W, taken from table 1. The maximum

power dissipation number cannot be exceeded for proper

operationofthedevice. Usingtheoutputvoltageof3.3V, and

an output current of 150mA, we can determine the maximum

input voltage. Ground current, maximum of 3mA for 150mA

of output current, can be taken from the Electrical Character-

istics section of the data sheet.

At lower values of output current, less output capacitance is

needed for stability. The capacitor can be reduced to 0.47µF

for current below 10mA or 0.33µF for currents below 1mA.

455mW = (V – 3.3V) 150mA + V × 3mA

No-Load Stability

IN

TheMIC5216willremainstableandinregulationwithnoload

(other than the internal voltage divider) unlike many other

voltage regulators. This is especially important in CMOS

RAM keep-alive applications.

455mW + 3.3V 150mA

(

)

V

IN

150mA + 3mA

V

= 6.2V_MAX

IN

Error Flag Ouput

Therefore, a 3.3V application at 150mA of output current can

accept a maximum input voltage of 6.2V in a SOT-23-5

package. For a full discussion of heat sinking and thermal

effectsonvoltageregulators, refertotheRegulatorThermals

sectionofMicrel’sDesigningwithLow-DropoutVoltageRegu-

lators handbook.

The error flag is an open-collector output and is active (low)

when an undervoltage of approximately 5% below the nomi-

nal output voltage is detected. A pullup resistor from IN to

FLAG is shown in all schematics.

If an error indication is not required, FLAG may be left open

and the pullup resistor may be omitted.

Peak Current Applications

Thermal Considerations

The MIC5216 is designed for applications where high start-

up currents are demanded from space constrained regula-

tors. This device will deliver 500mA start-up current from a

SOT-23-5 or MM8 package, allowing high power from a very

low profile device. The MIC5216 can subsequently provide

output current that is only limited by the thermal characteris-

tics of the device. You can obtain higher continuous currents

from the device with the proper design. This is easily proved

with some thermal calculations.

The MIC5216 is designed to provide 200mA of continuous

current in two very small profile packages. Maximum power

dissipationcanbecalculatedbasedontheoutputcurrentand

the voltage drop across the part. To determine the maximum

powerdissipationofthepackage,usethethermalresistance,

junction-to-ambient, of the device and the following basic

equation.

T

– T_A

(

)

J(MAX)

Ifwelookataspecificexample,itmaybeeasiertofollow. The

MIC5216 can be used to provide up to 500mA continuous

P_D

=

(MAX)

θ_JA

MIC5216

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January 2000

MIC5216

Micrel

output current. First, calculate the maximum power dissipa-

tion of the device, as was done in the thermal considerations

Theinformationusedtodeterminethesafeoperatingregions

can be obtained in a similar manner to that used in determin-

ing typical power dissipation, already discussed. Determin-

ingthemaximumpowerdissipationbasedonthelayoutisthe

first step, this is done in the same manner as in the previous

two sections. Then, a larger power dissipation number

multiplied by a set maximum duty cycle would give that

maximum power dissipation number for the layout. This is

bestshownthroughanexample. Iftheapplicationcallsfor5V

at 500mA for short pulses, but the only supply voltage

available is 8V, then the duty cycle has to be adjusted to

determine an average power that does not exceed the

maximum power dissipation for the layout.

section. Worst case thermal resistance (θ = 220°C/W for

JA

the MIC5216-x.xBM5), will be used for this example.

T

– T_A

(

)

J(MAX)

P_D

=

(MAX)

θ_JA

Assuming room temperature, we have a maximum power

dissipation number of

125°C – 25°C

(

)

P

=

D(MAX)

220°C/W

P_D= 455mW

% DC

Avg.P_D=

455mW =

0.274 =

V

– V_OUT

I

+ V_INI_GND

(

)

IN

OUT

Then we can determine the maximum input voltage for a five-

volt regulator operating at 500mA, using worst case ground

current.

100

% DC

100

8V – 5V 500mA + 8V × 20mA

(

)

P

I

= 455mW = (V – V

) I

+ V I

IN GND

D(max)

IN

OUT OUT

= 500mA

% Duty Cycle

100

OUT

1.66W

V

= 5V

OUT

I

= 20mA

GND

% Duty Cycle

100

455mW = (V – 5V) 500mA + V × 20mA

IN

2.995W = 520mA × V

IN

% Duty Cycle Max = 27.4%

2.955W

V

=

= 5.683V

With an output current of 500mA and a three-volt drop across

the MIC5216-xxBMM, the maximum duty cycle is 27.4%.

IN(max)

520mA

Therefore, to be able to obtain a constant 500mA output

current from the 5216-5.0BM5 at room temperature, you

need extremely tight input-output voltage differential, barely

above the maximum dropout voltage for that current rating.

Applications also call for a set nominal current output with a

greater amount of current needed for short durations. This is

a tricky situation, but it is easily remedied. Calculate the

average power dissipation for each current section, then add

the two numbers giving the total power dissipation for the

regulator. For example, if the regulator is operating normally

at 50mA, but for 12.5% of the time it operates at 500mA

output, the total power dissipation of the part can be easily

determined. First, calculate the power dissipation of the

device at 50mA. We will use the MIC5216-3.3BM5 with 5V

input voltage as our example.

You can run the part from larger supply voltages if the proper

precautions are taken. Varying the duty cycle using the

enable pin can increase the power dissipation of the device

by maintaining a lower average power figure. This is ideal for

applications where high current is only needed in short

bursts. Figure 1 shows the safe operating regions for the

MIC5216-x.xBM5 at three different ambient temperatures

and at different output currents. The data used to determine

this figure assumed a minimum footprint PCB design for

minimum heat sinking. Figure 2 incorporates the same

factors as the first figure, but assumes a much better heat

sink. A 1”square copper trace on the PC board reduces the

thermal resistance of the device. This improved thermal

resistanceimprovespowerdissipationandallowsforalarger

safe operating region.

P × 50mA = (5V – 3.3V) × 50mA + 5V × 650µA

D

P × 50mA = 173mW

D

However, this is continuous power dissipation, the actual

on-time for the device at 50mA is (100%-12.5%) or 87.5% of

the time, or 87.5% duty cycle. Therefore, P must be

D

multiplied by the duty cycle to obtain the actual average

power dissipation at 50mA.

P × 50mA = 0.875 × 173mW

Figures3and4showsafeoperatingregionsfortheMIC5216-

x.xBMM, the power MSOP package part. These graphs

show three typical operating regions at different tempera-

tures. The lower the temperature, the larger the operating

region. The graphs were obtained in a similar way to the

graphs for the MIC5216-x.xBM5, taking all factors into con-

sideration and using two different board layouts, minimum

footprint and 1” square copper PC board heat sink. (For

furtherdiscussionofPCboardheatsinkcharacteristics, refer

to Application Hint 17, “Designing PC Board Heat Sinks”.

D

P × 50mA = 151mW

D

The power dissipation at 500mA must also be calculated.

P × 500mA = (5V – 3.3V) 500mA + 5V × 20mA

D

P × 500mA = 950mW

D

This number must be multiplied by the duty cycle at which it

would be operating, 12.5%.

P × = 0.125 × 950mW

D

P × = 119mW

D

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MIC5216

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10

8

10

8

10

8

100mA

200mA

6

200mA

4

300mA

400mA

20

2

500mA

400mA

20

500mA

40

500mA

40

DUTY CYCLE (%)

0

60

80

100

0

60

80

100

0

20

40

60

80

100

DUTY CYCLE (%)

a. 25°C Ambient

b. 50°C Ambient

c. 85°C Ambient

Figure 1. MIC5216-x.xBM5 (SOT-23-5) on Minimum Recommended Footprint

10

8

10

8

10

8

100mA

200mA

6

200mA

300mA

4

300mA

80

400mA

20

2

300mA

400mA

20

400mA

500mA

20 40

500mA

40 60

500mA

40 60

0

80

100

0

100

0

60

80

100

DUTY CYCLE (%)

a. 25°C Ambient

b. 50°C Ambient

c. 85°C Ambient

2

Figure 2. MIC5216-x.xBM5 (SOT-23-5) on 1-inch Copper Cladding

10

8

10

8

10

8

100mA

300mA

100mA

200mA

6

200mA

300mA

4

400mA

20

400mA

20

2

400mA

500mA

40 60

500mA

40

500mA

20 40

DUTY CYCLE (%)

0

80

100

0

60

80

100

0

60

80

100

DUTY CYCLE (%)

a. 25°C Ambient

b. 50°C Ambient

c. 85°C Ambient

Figure 3. MIC5216-x.xBMM (MSOP-8) on Minimum Recommended Footprint

10

8

10

8

10

8

200mA

300mA

100mA

200mA

300mA

200mA

6

400mA

300mA

400mA

4

400mA

20

500mA

2

500mA

2

500mA

40 60

0

20

40

60

80

100

0

20

40

60

80

100

0

80

100

DUTY CYCLE (%)

a. 25°C Ambient

b. 50°C Ambient

c. 85°C Ambient

2

Figure 4. MIC5216-x.xBMM (MSOP-8) on 1-inch Copper Cladding

MIC5216

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January 2000

MIC5216

Micrel

The total power dissipation of the device under these condi-

tions is the sum of the two power dissipation figures.

Fixed Regulator Circuits

MIC5216

V_IN

V_OUT

1µF

P

= P × 50mA + P × 500mA

D D

IN

OUT

FLG

D(total)

= 151mW + 119mW

= 270mW

EN

GND

The total power dissipation of the regulator is less than the

maximum power dissipation of the SOT-23-5 package at

room temperature, on a minimum footprint board and there-

fore would operate properly.

100k

Figure 5. Low-Noise Fixed Voltage Regulator

Figure 5 shows a basic MIC5216-x.xBMx fixed-voltage regu-

lator circuit. A 1µF minimum output capacitor is required for

basic fixed-voltage applications.

Multilayer boards with a ground plane, wide traces near the

pads, and large supply-bus lines will have better thermal

conductivity.

The flag output is an open-collector output and requires a

pull-up resistor to the input voltage. The flag indicates an

undervoltage condition on the output of the device.

For additional heat sink characteristics, please refer to Micrel

Application Hint 17, “Designing P.C. Board Heat Sinks”,

included in Micrel’s Databook. For a full discussion of heat

sinking and thermal effects on voltage regulators, refer to

Regulator Thermals section of Micrel’s Designing with Low-

Dropout Voltage Regulators handbook.

January 2000

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MIC5216

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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 (0.03)

0.012 (0.03) R

0.039 (0.99)

0.0256 (0.65) TYP

0.035 (0.89)

0.021 (0.53)

8-Pin MSOP (MM)

1.90 (0.075) REF

0.95 (0.037) REF

1.75 (0.069) 3.00 (0.118)

1.50 (0.059) 2.60 (0.102)

DIMENSIONS:

MM (INCH)

1.30 (0.051)

0.90 (0.035)

3.02 (0.119)

2.80 (0.110)

0.20 (0.008)

0.09 (0.004)

10°

0°

0.15 (0.006)

0.00 (0.000)

0.50 (0.020)

0.35 (0.014)

0.60 (0.024)

0.10 (0.004)

SOT-23-5 (M5)

MIC5216

10

January 2000

MIC5216

Micrel

January 2000

11

MIC5216

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.

MIC5216

12

January 2000


型号：	MIC5216-3.6BMMT&R
厂家：	MICREL SEMICONDUCTOR
描述：	暂无描述稳压器调节器光电二极管输出元件
文件：	总12页 (文件大小：68K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MIC5216-3.6BMMT&R [MICREL]

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