MIC39100-1.8BS_技术文档

MIC39100/39101/39102

Micrel

MIC39100/39101/39102

1A Low-Voltage Low-Dropout Regulator

General Description

Features

The MIC39100, MIC39101, and MIC39102 are 1A low-

dropout linear voltage regulators that provide low-voltage,

high-current output from an extremely small package. Utiliz-

ing Micrel’s proprietary Super βeta PNP™ pass element, the

MIC39100/1/2 offers extremely low dropout (typically 410mV

at 1A) and low ground current (typically 11mA at 1A).

• Fixed and adjustable output voltages to 1.24V

• 410mV typical dropout at 1A

Ideal for 3.0V to 2.5V conversion

Ideal for 2.5V to 1.8V conversion

• 1A minimum guaranteed output current

• 1% initial accuracy

• Low ground current

The MIC39100 is a fixed output regulator offered in the

SOT-223 package. The MIC39101 and MIC39102 are fixed

and adjustable regulators, respectively, in a thermally en-

hanced power 8-lead SOP (small outline package).

• Current limiting and thermal shutdown

• Reversed-battery protection

• Reversed-leakage protection

• Fast transient response

• Low-profile SOT-223 package

• Power SO-8 package

The MIC39100/1/2 is ideal for PC add-in cards that need to

convert from standard 5V to 3.3V, 3.3V to 2.5V or 2.5V to

1.8V.Aguaranteedmaximumdropoutvoltageof630mVover

all operating conditions allows the MIC39100/1/2 to provide

2.5V from a supply as low as 3.13V and 1.8V from a supply

as low as 2.43V.

Applications

• LDO linear regulator for PC add-in cards

• PowerPC™ power supplies

• High-efficiency linear power supplies

• SMPS post regulator

• Multimedia and PC processor supplies

• Battery chargers

The MIC39100/1/2 is fully protected with overcurrent limiting,

thermal shutdown, and reversed-battery protection. Fixed

voltages of 5.0V, 3.3V, 2.5V, and 1.8V are available on

MIC39100/1 with adjustable output voltages to 1.24V on

MIC39102.

• Low-voltage microcontrollers and digital logic

For other voltages, contact Micrel.

Ordering Information

Part Number

Voltage Junction Temp. Range

Package

MIC39100-1.8BS

MIC39100-2.5BS

MIC39100-3.3BS

MIC39100-5.0BS

MIC39101-1.8BM

MIC39101-2.5BM

MIC39101-3.3BM

MIC39101-5.0BM

MIC39102BM

1.8V

2.5V

3.3V

5.0V

1.8V

2.5V

3.3V

5.0V

Adj.

–40°C to +125°C

SOT-223

SOP-8

Typical Applications

100k

Error

Flag

Output

MIC39100

MIC39101

MIC39102

V_IN

3.3V

V_IN

3.3V

V_IN

2.5V

IN

OUT

2.5V

IN

OUT

2.5V

IN

OUT

1.5V

R1

ENABLE

SHUTDOWN

ENABLE

SHUTDOWN

EN

FLG

EN

ADJ

10µF

tantalum

10µF

tantalum

10µF

tantalum

GND

R2

GND

2.5V/1A Regulator

2.5V/1A Regulator with Error Flag

1.5V/1A Adjustable Regulator

Super βeta PNP is a trademark of Micrel, Inc.

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

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MIC39100/39101/39102

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Pin Configuration

GND

TAB

1

2

3

IN GND OUT

MIC39100-x.x

Fixed

SOT-223 (S)

EN

IN

1

2

3

4

8

7

6

5

GND

EN

IN

1

2

3

4

8

7

6

5

GND

OUT

FLG

OUT

ADJ

MIC39101-x.x

Fixed

SOP-8 (M)

MIC39102

Adjustable

SOP-8 (M)

Pin Description

Pin No.

Pin Name

Pin Function

MIC39100 MIC39101 MIC39102

1

EN

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

low or open = shutdown.

2

3

4

2

3

IN

Supply (Input)

3

OUT

FLG

Regulator Output

Flag (Output): Open-collector error flag output. Active low = output under-

voltage.

4

ADJ

Adjustment Input: Feedback input. Connect to resitive voltage-divider

network.

2, TAB

5–8

GND

Ground

MIC39100/39101/39102

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Absolute Maximum Ratings (Note 1)

Operating Ratings (Note 2)

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

Supply Voltage (V ) .................................. +2.25V to +16V

IN

Enable Voltage (V ) ..................................................+20V

Enable Voltage (V ) ..................................................+16V

EN

Storage Temperature (T ) ....................... –65°C to +150°C

Maximum Power Dissipation (P

)..................... Note 4

S

D(max)

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

ESD, Note 3

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

J

Package Thermal Resistance

SOT-223 (θ ) .....................................................15°C/W

JC

SOP-8 (θ ).........................................................20°C/W

JC

Electrical Characteristics

V_IN= V_OUT+ 1V; V_EN= 2.25V; T_J= 25°C, bold values indicate –40°C ≤ T_J≤ +125°C; unless noted

Symbol

Parameter

Condition

Min

Typ

Max

Units

V_OUT

Output Voltage

10mA

–1

–2

1

2

%

10mA ≤ I_OUT≤ 1A, V_OUT+ 1V ≤ V_IN≤ 8V

Line Regulation

Load Regulation

I_OUT= 10mA, V_OUT+ 1V ≤ V_IN≤ 16V

V_IN= V_OUT+ 1V, 10mA ≤ I_OUT≤ 1A,

0.06

0.2

40

0.5

1

%

∆V_OUT/∆T

Output Voltage Temp. Coefficient,

100 ppm/°C

Note 5

V_DO

Dropout Voltage, Note 6

I_OUT= 100mA, ∆V_OUT= –1%

140

200

250

mV

I_OUT= 500mA, ∆V_OUT= –1%

I_OUT= 750mA, ∆V_OUT= –1%

I_OUT= 1A, ∆V_OUT= –1%

275

330

mV

500

550

630

mV

410

400

4

I_GND

Ground Current, Note 7

I_OUT= 100mA, V_IN= V_OUT+ 1V

I_OUT= 500mA, V_IN= V_OUT+ 1V

I_OUT= 750mA, V_IN= V_OUT+ 1V

I_OUT= 1A, V_IN= V_OUT+ 1V

µA

mA

A

6.5

11

20

I_OUT(lim)

Enable Input

V_EN

Current Limit

V_OUT= 0V, V_IN= V_OUT+ 1V

1.8

2.5

Enable Input Voltage

Enable Input Current

logic low (off)

logic high (on)

V_EN= 2.25V

0.8

V

2.25

I_EN

1

15

30

75

µA

V_EN= 0.8V

2

4

µA

Flag Output

I_FLG(leak)

Output Leakage Current

Output Low Voltage

V_OH= 16V

0.01

210

1

2

µA

V_FLG(do)

V_FLG

V_IN= 2.250V, I_OL, = 250µA, Note 9

300

400

mV

Low Threshold

High Threshold

Hysteresis

% of V_OUT

93

%

99.2

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Symbol

Parameter

Condition

Min

Typ

Max

Units

MIC39102 Only

Reference Voltage

1.228 1.240 1.252

V

1.215

1.203

1.265

1.277

Note 10

Note 7

Adjust Pin Bias Current

40

20

80

120

nA

Reference Voltage

Temp. Coefficient

ppm/°C

Adjust Pin Bias Current

Temp. Coefficient

0.1

nA/°C

Note 1. Exceeding the absolute maximum ratings 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.

Note 4.

P

= (T

– T ) ÷ θ , where θ depends upon the printed circuit layout. See “Applications Information.”

J(max) A JA JA

D(max)

Note 5. Output voltage temperature coefficient is ∆V

÷ (T

– T

) where T

is +125°C and T is –40°C.

J(min)

OUT(worst case)

J(max)

J(min)

J(max)

Note 6.

V

= V – V

when V

decreases to 98% of its nominal output voltage with V = V

+ 1V. For output voltages below 2.25V, dropout

OUT

DO

IN

OUT

IN

voltage is the input-to-output voltage differential with the minimum input voltage being 2.25V. Minimum input operating voltage is 2.25V.

Note 7.

Note 8.

I

is the quiescent current. I = I + I

.

OUT

GND

IN

GND

V

≤ 0.8V, V ≤ 8V, and V

= 0V.

EN

IN

OUT

Note 9. For a 2.5V device, V = 2.250V (device is in dropout).

IN

Note 10. V

≤ V

≤ (V – 1V), 2.25V ≤ V ≤ 16V, 10mA ≤ I ≤ 1A, T = T

.

REF

OUT

IN

L

J

MAX

Note 11. 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 200mA load pulse at V = 16V for t = 10ms.

IN

MIC39100/39101/39102

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Typical Characteristics

Power Supply

Rejection Ratio

Power Supply

Rejection Ratio

Power Supply

Rejection Ratio

80

60

40

20

0

80

60

40

20

0

V_IN= 5V

V_OUT= 3.3V

V_IN= 5V

V_OUT= 3.3V

V_IN= 3.3V

V_OUT= 2.5V

60

40

I_OUT= 1A

20

I_OUT= 1A

C_OUT= 47µF

C_IN= 0

I_OUT= 1A

C_OUT= 10µF

C_IN= 0

C_OUT= 10µF

C_IN= 0

0

1E+1 1E+2 1E+3 1E+4 1E+5 1E+6

1k

10k 1M

1E+1 1E+2 1E+3 1E+4 1E+5 1E+6

1k

10k 1M

1k

10k

1M

10

100

100k

10

100

100k

10

100

100k

FREQUENCY (Hz)

Power Supply

Rejection Ratio

Dropout Voltage

vs. Output Current

Dropout Voltage

vs. Temperature

80

600

500

V_IN= 3.3V

V_OUT= 2.5V

450

400

350

300

250

200

150

100

50

I_LOAD= 1A

550

500

450

400

350

300

2.5V

60

40

20

0

1.8V

3.3V

1.8V

T_A= 25°C

2.5V

I_OUT= 1A

C_OUT= 47µF

C_IN= 0

0

1E+1 1E+2 1E+3 1E+4 1E+5 1E+6

1k

10k

-40 -20

0

20 40 60 80 100 120

1M

3.5

8

0

250 500 750 1000 1250

OUTPUT CURRENT (mA)

10

100

100k

FREQUENCY (Hz)

TEMPERATURE (°C)

Dropout Characteristics

(2.5V)

Dropout Characteristics

(3.3V)

Ground Current

vs. Output Current

2.8

3.6

3.4

3.2

3.0

2.8

2.6

2.4

14

2.6

2.4

2.2

2.0

1.8

1.6

1.4

12

10

8

I

=100mA

I

=100mA

LOAD

1.8V

2.5V

I

LOAD

=750mA

3.3V

I

LOAD

=750mA

6

I

=1A

LOAD

4

I

=1A

LOAD

2

0

200 400 600 800 1000

OUTPUT CURRENT (mA)

2

2.3

2.6

2.9

3.2

2.8

3.2

3.6

4.0

4.4

SUPPLY VOLTAGE (V)

Ground Current

vs. Supply Voltage (2.5V)

Ground Current

vs. Supply Voltage (2.5V)

Ground Current

vs. Supply Voltage (3.3V)

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

35

30

25

20

15

10

5

I_{LOAD =}100mA

I

=100mA

=10mA

LOAD

I

=1A

LOAD

I

LOAD

I_{LOAD =}10mA

0

2

4

6

8

0

2

4

6

0

2

4

6

8

SUPPLY VOLTAGE (V)

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Ground Current

vs. Supply Voltage (3.3V)

Ground Current

vs. Temperature

Ground Current

vs. Temperature

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

50

40

30

20

10

0

1.0

0.8

0.6

0.4

0.2

0

2.5V

3.3V

I_{LOAD =}10mA

I

=1A

LOAD

1.8V

3.3V

2.5V

1.8V

I_LOAD= 500mA

-40 -20

0

20 40 60 80 100 120

0

2

4

6

8

-40 -20

0

20 40 60 80 100 120

SUPPLY VOLTAGE (V)

TEMPERATURE (°C)

Output Voltage

vs. Temperature

Ground Current

vs. Temperature

Short Circuit

vs. Temperature

20

15

10

5

3.40

3.35

3.30

3.25

3.20

2.5

2.0

1.5

1.0

0.5

0

I_LOAD= 1A

3.3V

Typical 3.3V

Device

1.8V

2.5V

1.8V

3.3V

0

-40 -20

0

20 40 60 80 100 120

-40 -20

0

20 40 60 80 100 120

-40 -20

0

20 40 60 80 100 120

TEMPERATURE (°C)

Error Flag

Pull-Up Resistor

Enable Current

vs. Temperature

Flag-Low Voltage

vs. Temperature

12

10

8

250

200

150

100

50

6

5

4

3

2

1

V_IN= 5V

V_IN= V_OUT+ 1V

FLAG-LOW

VOLTAGE

V_EN= 2.4V

FLAG HIGH

(OK)

6

V_IN= 2.25V

R_PULL-UP= 22kΩ

4

FLAG LOW

(FAULT)

2

0

0.01 0.1

1

10 100 100010000

-40 -20

0

20 40 60 80 100120140

-40 -20

0

20 40 60 80 100120140

RESISTANCE (kΩ)

TEMPERATURE (°C)

MIC39100/39101/39102

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Functional Characteristics

Load Transient Response

V_OUT= 2.5V

C_OUT= 10µF

V_OUT= 2.5V

C_OUT= 47µF

1A

100mA

10mA

TIME (250µs/div.)

TIME (500µs/div.)

Line Transient Response

V_OUT= 2.5V

C_OUT= 10µF

TIME (25µs/div.)

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MIC39100/39101/39102

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Functional Diagrams

IN

OUT

OV I_LIMIT

18V

1.240V

Ref.

Thermal

Shut-

down

MIC39100

GND

MIC39100 Fixed Regulator Block Diagram

OUT

IN

O.V.

I_LIMIT

18V

1.180V

1.240V

Ref.

FLAG

EN

Thermal

Shut-

down

GND

MIC39101

MIC39101 Fixed Regulator with Flag and Enable Block Diagram

OUT

IN

O.V.

I_LIMIT

18V

1.240V

Ref.

ADJ

EN

Thermal

Shut-

down

GND

MIC39102

MIC39102 Adjustable Regulator Block Diagram

MIC39100/39101/39102

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Input Capacitor

Applications Information

An input capacitor of 1µF or greater is recommended when

thedeviceismorethan4inchesawayfromthebulkacsupply

capacitance or when the supply is a battery. Small, surface

mount, ceramic chip capacitors can be used for bypassing.

Larger values will help to improve ripple rejection by bypass-

ing the input to the regulator, further improving the integrity of

the output voltage.

The MIC39100/1/2 is a high-performance low-dropout volt-

age regulator suitable for moderate to high-current voltage

regulator applications. Its 630mV dropout voltage at full load

and overtemperature makes it especially valuable in battery-

powered systems and as high-efficiency noise filters in post-

regulator applications. Unlike older NPN-pass transistor de-

signs, where the minimum dropout voltage is limited by the

base-to-emitter voltage drop and collector-to-emitter satura-

tion voltage, dropout performance of the PNP output of these

Error Flag

The MIC39101 features an error flag (FLG), which monitors

the output voltage and signals an error condition when this

voltage drops 5% below its expected value. The error flag is

an open-collector output that pulls low under fault conditions

and may sink up to 10mA. Low output voltage signifies a

number of possible problems, including an overcurrent fault

(the device is in current limit) or low input voltage. The flag

output is inoperative during overtemperature conditions. A

devices is limited only by the low V saturation voltage.

CE

A trade-off for the low dropout voltage is a varying base drive

requirement. Micrel’s Super βeta PNP™ process reduces

this drive requirement to only 2% of the load current.

The MIC39100/1/2 regulator is fully protected from damage

due to fault conditions. Linear current limiting is provided.

Output current during overload conditions is constant. Ther-

mal shutdown disables the device when the die temperature

exceeds the maximum safe operating temperature. Tran-

sient protection allows device (and load) survival even when

the input voltage spikes above and below nominal. The

outputstructureoftheseregulatorsallowsvoltagesinexcess

of the desired output voltage to be applied without reverse

current flow.

pull-up resistor from FLG to either V or V

is required for

IN

OUT

properoperation.Forinformationregardingtheminimumand

maximum values of pull-up resistance, refer to the graph in

the typical characteristics section of the data sheet.

Enable Input

The MIC39101 and MIC39102 versions feature an 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

MIC39100-x.x

V_IN

V_OUT

IN

OUT

GND

logic interfacing. EN may be directly tied to V and pulled up

C_IN

C_OUT

IN

to the maximum supply voltage

Transient Response and 3.3V to 2.5V or 2.5V to 1.8V

Conversion

Figure 1. Capacitor Requirements

Output Capacitor

The MIC39100/1/2 has excellent transient response to varia-

tions in input voltage and load current. The device has been

designed to respond quickly to load current variations and

input voltage variations. Large output capacitors are not

required to obtain this performance. A standard 10µF output

capacitor, preferably tantalum, is all that is required. Larger

values help to improve performance even further.

The MIC39100/1/2 requires an output capacitor to maintain

stability and improve transient response. Proper capacitor

selection is important to ensure proper operation. The

MIC39100/1/2 output capacitor selection is dependent upon

theESR(equivalentseriesresistance)oftheoutputcapacitor

to maintain stability. When the output capacitor is 10µF or

greater, the output capacitor should have an ESR less than

2Ω. This will improve transient response as well as promote

stability. Ultra-low-ESR capacitors (<100mΩ), such as ce-

ramic chip capacitors, may promote instability. These very

low ESR levels may cause an oscillation and/or underdamp-

ed transient response. A low-ESR solid tantalum capacitor

works extremely well and provides good transient response

and stability over temperature. Aluminum electrolytics can

also be used, as long as the ESR of the capacitor is <2Ω.

By virtue of its low-dropout voltage, this device does not

saturate into dropout as readily as similar NPN-based de-

signs. Whenconvertingfrom3.3Vto2.5Vor2.5Vto1.8V, the

NPN based regulators are already operating in dropout, with

typical dropout requirements of 1.2V or greater. To convert

down to 2.5V or 1.8V without operating in dropout, NPN-

based regulators require an input voltage of 3.7V at the very

least. The MIC39100 regulator will provide excellent perfor-

mance with an input as low as 3.0V or 2.5V respectively. This

gives the PNP based regulators a distinct advantage over

older, NPN based linear regulators.

The value of the output capacitor can be increased without

limit. Higher capacitance values help to improve transient

response and ripple rejection and reduce output noise.

Minimum Load Current

TheMIC39100/1/2regulatorisspecifiedbetweenfiniteloads.

If the output current is too small, leakage currents dominate

and the output voltage rises. A 10mA minimum load current

is necessary for proper regulation.

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MIC39100/39101/39102

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Adjustable Regulator Design

sink thermal resistance) and θ

(sink-to-ambient thermal

SA

resistance).

Using the power SOP-8 reduces the θ dramatically and

JC

MIC39102

allows the user to reduce θ . The total thermal resistance,

V_IN

IN

OUT

V_OUT

C_OUT

CA

R1

R2

θ

(junction-to-ambient thermal resistance) is the limiting

JA

ENABLE

SHUTDOWN

EN

ADJ

factor in calculating the maximum power dissipation capabil-

GND

ity of the device. Typically, the power SOP-8 has a θ of

JC

20°C/W, this is significantly lower than the standard SOP-8

R1

R2

which is typically 75°C/W. θ

is reduced because pins 5

V

= 1.240V 1+

CA

OUT

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.

Figure 2. Adjustable Regulator with Resistors

The MIC39102 allows programming the output voltage any-

wherebetween1.24Vandthe16Vmaximumoperatingrating

of the family. Two resistors are used. Resistors can be quite

large, up to 1MΩ, because of the very high input impedance

and low bias current of the sense comparator: The resistor

values are calculated by:

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.

V_OUT

R1= R2

−1

1.240

Where V is the desired output voltage. Figure 2 shows

O

SOP-8

component definition. Applications with widely varying load

currents may scale the resistors to draw the minimum load

current required for proper operation (see above).

Power SOP-8 Thermal Characteristics

θ_JA

One of the secrets of the MIC39101/2’s performance is its

power SO-8 package featuring half the thermal resistance of

a standard SO-8 package. Lower thermal resistance means

more output current or higher input voltage for a given

package size.

ground plane

heat sink area

θ_JC

θ_CA

AMBIENT

printed circuit board

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.

Figure 3. Thermal Resistance

Figure 4 shows copper area versus power dissipation with

each trace corresponding to a different temperature rise

above ambient.

Thermal resistance consists of two main elements, θ

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.

JC

(junction-to-casethermalresistance)andθ (case-to-ambi-

CA

ent thermal resistance). See Figure 3. θ is the resistance

JC

from the die to the leads of the package. θ is the resistance

CA

from the leads to the ambient air and it includes θ (case-to-

CS

900

800

900

T

= 125°C

800

700

600

500

400

300

200

100

0

J

∆T_JA

=

700

600

500

400

300

200

100

0

T_A= 85°C

50°C 25°C

0

0.25 0.50 0.75 1.00 1.25 1.50

POWER DISSIPATION (W)

0

0.25 0.50 0.75 1.00 1.25 1.50

POWER DISSIPATION (W)

Figure 4. Copper Area vs. Power-SOP

Power Dissipation

Figure 5. Copper Area vs. Power-SOP

Power Dissipation

MIC39100/39101/39102

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Quick Method

∆T = T

– T

A(max)

J(max)

Determine the power dissipation requirements for the design

along with the maximum ambient temperature at which the

device will be operated. Refer to Figure 5, 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,

836mW, the curve in Figure 5 shows that the required area of

T

= 125°C

J(max)

T

= maximum ambient operating temperature

A(max)

Forexample, themaximumambienttemperatureis50°C, the

∆T is determined as follows:

∆T = 125°C – 50°C

∆T = 75°C

Using Figure 4, 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:

2

copper is 160mm .

The θ of this package is ideally 63°C/W, but it will vary

JA

depending upon the availability of copper ground plane to

which it is attached.

P = (V – V

) I

+ V · I

D

IN

OUT OUT IN GND

If we use a 2.5V output device and a 3.3V input at an output

current of 1A, then our power dissipation is as follows:

P = (3.3V – 2.5V) × 1A + 3.3V × 11mA

D

P = 800mW + 36mW

D

P = 836mW

D

From Figure 4, the minimum amount of copper required to

2

operate this application at a ∆T of 75°C is 160mm .

June 2000

11

MIC39100/39101/39102

Micrel

Package Information

3.15 (0.124)

2.90 (0.114)

C

L

7.49 (0.295)

6.71 (0.264)

3.71 (0.146)

3.30 (0.130)

C

L

2.41 (0.095)

2.21 (0.087)

1.04 (0.041)

0.85 (0.033)

4.7 (0.185)

4.5 (0.177)

DIMENSIONS:

MM (INCH)

1.70 (0.067)

1.52 (0.060)

16°

10°

6.70 (0.264)

6.30 (0.248)

0.10 (0.004)

0.38 (0.015)

10°

MAX

0.02 (0.0008)

0.25 (0.010)

0.84 (0.033)

0.64 (0.025)

0.91 (0.036) MIN

SOT-223 (S)

0.026 (0.65)

MAX)

PIN 1

0.157 (3.99)

0.150 (3.81)

DIMENSIONS:

INCHES (MM)

0.020 (0.51)

0.013 (0.33)

0.050 (1.27)

TYP

45°

0.0098 (0.249)

0.0040 (0.102)

0.010 (0.25)

0.007 (0.18)

0°–8°

0.197 (5.0)

0.189 (4.8)

0.050 (1.27)

0.016 (0.40)

SEATING

PLANE

0.064 (1.63)

0.045 (1.14)

0.244 (6.20)

0.228 (5.79)

8-Lead SOP (M)

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.

MIC39100/39101/39102

12

June 2000


型号：	MIC39100-1.8BS
厂家：	MICREL SEMICONDUCTOR
描述：	1A Low-Voltage Low-Dropout Regulator 1A低压低压降稳压器稳压器调节器光电二极管输出元件
文件：	总12页 (文件大小：104K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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