MIC281-2YM6TR_技术文档

MIC281

Micrel

MIC281

Low-Cost IttyBitty™ Thermal Sensor IttyBitty®

REV 11/04

General Description

Features

The MIC281 is a digital thermal sensor capable of measuring

the temperature of a remote PN junction. It is optimized for

applications favoring low cost and small size. The remote

junction may be an inexpensive commodity transistor, e.g.,

2N3906, or an embedded thermal diode such as found in

Intel Pentium* II/III/IV CPUs, AMD Athlon* CPUs, and Xilinx

Virtex* FPGAs.

• Remote temperature measurement using embedded

thermal diodes or commodity transistors

• Accurate remote sensing

±3°C max., 0°C to 100°C

• Excellent noise rejection

2

• I C and SMBus 2.0 compatible serial interface

• SMBus timeout to prevent bus lockup

• Voltage tolerant I/Os

• Low power shutdown mode

• Failsafe response to diode faults

• 3.0V to 3.6V power supply range

• IttyBitty™ SOT23-6 Package

The MIC281 is 100% software and hardware backward com-

patiblewiththeMIC280andfeaturesthesameindustry-leading

noise performance and small size. The advanced integrating

A/Dconverterandanalogfront-endreduceerrorsduetonoise

for maximum accuracy and minimum guardbanding.

A2-wireSMBus2.0-compatibleserialinterfaceisprovidedfor

host communication. The clock and data pins are 5V-tolerant

Applications

• Desktop, server and notebook computers

• Set-top boxes

regardless of the value of V . They will not clamp the bus

DD

lines low even if the device is powered down.

Superior performance, low power, and small size make the

MIC281 an excellent choice for cost-sensitive thermal man-

agement applications.

• Game consoles

• Appliances

Typical Application

3.3V

10k

pull-ups

0.1µF

MIC281

5

1

DATA

CLK

NC

VDD

TO

SERIAL BUS

HOST

4

3

2

T1

GND

CPU DIODE

2000pF

MIC281 Typical Application

IttyBitty is a registered trademark of Micrel, Inc.

*All trademarks are the property of their respective owners.

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

November 2004

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MIC281

Micrel

Ordering Information

Part Number

Marking Pb-FREE

MIC281-0YM6* TB00

Slave Address Ambient Temp. Range

Package

Standard

Marking

MIC281-0BM6* TB00

MIC281-1BM6* TB01

MIC281-2BM6* TB02

MIC281-3BM6* TB03

MIC281-4BM6 TB04

MIC281-5BM6* TB05

MIC281-6BM6* TB06

MIC281-7BM6* TB07

1001 000x

1001 001x

1001 010x

1001 011x

-55°C to +125°C

SOT23-6

b

MIC281-1YM6* TB01

MIC281-2YM6* TB02

MIC281-3YM6* TB03

b

MIC281-4YM6

TB05

1001 100x

b

MIC281-5YM6* TB05

MIC281-6YM6* TB06

MIC281-7YM6* TB07

1001 101x

1001 110x

b

1001 111x

* Contact Micrel regarding availability

Pin Conﬁguration

VDD

GND

T1

1

2

3

6

5

4

NC

DATA

CLK

SOT23-6

Pin Description

Pin Name

Pin Description

1

VDD

GND

T1

Analog Input: Power supply input to the IC.

Ground return for all IC functions.

2

3

Analog Input: Connection to remote diode junction.

Digital Input: Serial bit clock input.

4

CLK

DATA

NC

5

Digital I/O: Open-drain. Serial data input/output.

No Connection: Must be left unconnected.

6

MIC281

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MIC281

Micrel

Absolute Maximum Ratings (Note 1)

Operating Ratings (Note 2)

Power Supply Voltage, V

3.8V

Power Supply Voltage, V ......................... +3.0V to +3.6V

DD.....................................................

DD

Voltage on T1 ........................................–0.3V to V +0.3V

Ambient Temperature Range (T ) .............. –40°C to +85°C

DD

A

Voltage on CLK, DATA....................................–0.3V to 6.0V

Current Into Any Pin ................................................. ±10mA

Package Thermal Resistance (θ )

JA

SOT-23-6...........................................................230°C/W

Power Dissipation, T = 125°C................................109mW

A

Junction Temperature................................................ 150°C

Storage Temperature................................ –65°C to +150°C

ESD Ratings, Note 7

Human Body Model................................................ 1.5kV

Machine Model ........................................................200V

Soldering (SOT23-6 Package)

+5

Vapor Phase (60s).........................................220 / °C

Infrared (15s).................................................235 / °C

–0

+5

–0

Electrical Characteristics

For typical values, T_A=25°C, V_DD=3.3V unless otherwise noted. Bold values are for T_MIN≤T_A≤T_MAXunless otherwise noted. Note 2

Symbol

Power Supply

I_DD

Parameter

Condition

Min

Typ

Max

Units

Supply Current

T1 open; CLK=DATA=High; Normal Mode

0.23

9

0.4

mA

µA

Shutdown mode; T1 open; CLK = 100kHz;

Note 5

Shutdown Mode; T1 open; CLK=DATA=High

V_DD> V_POR

6

µA

µs

V

t_POR

Power-on reset time, Note 5

200

2.65

V_POR

Power-on reset voltage

All registers reset to default values; A/D

conversions initiated

2.95

V_HYST

Power-on reset hysteresis voltage

Note 5

300

mV

Temperature-to-Digital Converter Characteristics

Accuracy, Notes 3, 5, 6

0°C ≤ T_D≤ 100°C; 0°C ≤ T_A≤ 85°C;

3.15V ≤ V_DD≤ 3.45V

±1

±2

±3

±5

°C

ms

–40°C ≤ T_D≤ 125°C; 0°C ≤ T_A≤ 85°C;

3.15V ≤ V_DD≤ 3.45V

t_CONV

Remote Temperature Input, T1

I_FCurrent into External Diode

Note 5

Serial Data I/O Pin, DATA

Conversion time, Note 5

200

240

T1 forced to 1.0V, high level

192

12

400

µA

Low level

7

µA

V_OL

Low Output Voltage, Note 4

I_OL= 3mA

0.3

0.5

0.8

5.5

V

I_OL= 6mA

V_IL

Low Input Voltage

High Input Voltage

Input Capacitance, Note 5

Input Current

3.0V ≤ V_DD≤ 5.5V

V

V_IH

2.1

V

C_IN

I_LEAK

10

pF

µA

±1

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MIC281

Micrel

Symbol

Parameter

Condition

Min

2.1

Typ

Max

Units

Serial Clock Input, CLK

V_IL

Low Input Voltage

3.0V ≤ V_DD≤ 3.6V

0.8

5.5

V

V_IH

High Input Voltage

Input Capacitance, Note 5

Input current

3.0V ≤ V_DD≤ 3.6V

C_IN

I_LEAK

10

pF

µA

±1

Serial Interface Timing

t₁

t₂

CLK (clock) period

2.5

100

300

100

25

µs

ns

ms

Data in Setup Time to CLK High

Data Out Stable After CLK Low

DATA Low Setup Time to CLK Low

t₃

t₄

Start Condition

t₅

DATA High Hold Time After CLK High Stop Condition

Bus timeout

t_TO

30

35

Note 1. The device is not guaranteed to function outside its operating range.

Note 2. Final test on outgoing product is performed at T_A= 25°C.

Note 3. T_Dis the temperature of the remote diode junction. Testing is performed using a single unit of one of the transistors listed in Table 5.

Note 4. Current into the DATA pin will result in self-heating of the device. Sink current should be minimized for best accuracy.

Note 5. Guaranteed by design over the operating temperature range. Not 100% production tested.

Note 6. Accuracy speciﬁcations do not include quantization noise which may be up to ± 0.5LSB.

Note 7. Devices are ESD sensitive. Observe appropriate handling precautions.

Timing Diagram

t₁

SCL

t₄

t₂

t₅

SDA

DATA INPUT

t₃

SDA

DATA OUTPUT

Serial Interface Timing

MIC281

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MIC281

Micrel

Typical Characteristics

V

= 3.3V; T = 25°C, unless otherwise noted.

DD

A

Quies cent C urrent vs .

C lock Frequency in

S hutdown Mode

R emote Temperature

Meas urement E rror

S upply C urrent vs .

Temperature for V = 3.3V

DD

2

1.5

1

400

350

300

250

200

150

100

50

20

15

10

5

T1 open

DATA = HIG H

0.5

0

-0.5

-1

-1.5

-2

0

20

40

60

80

100

-55 -35 -15

5 25 45 65 85 105 125

0

100

200

300

400

REMOTE DIODE TEMPERATURE (°C)

TEMPERATURE (°C)

FREQUENCY (kHz)

Quies cent C urrent vs .

Temperature in S hutdown Mode

Quies cent C urrent vs .

S upply Voltage in S hutdown Mode

Meas urement E rror vs .

P C B L eakage to +3.3V/G ND

10

30

8

T1 open

C LK = DATA = HIG H

T1 open

C LK = DATA = HIG H

9

6

4

25

8

7

6

5

4

3

2

1

0

20

15

10

5

2

G ND

3.3V

0

-2

-4

-6

0

-8

1x10 ⁶

1x10 ⁷

1x10 ⁸

1x10 ⁹

2.6

2.8

3.0

3.2

3.4

3.6

-55 -35 -15

5 25 45 65 85 105 125

SUPPLY VOLTAGE (V)

TEMPERATURE (°C)

RESISTANCE FROM T1 (Ω)

E rror Due to Nois e on the

C ollector of R emote Trans is tor

R emote Temperature E rror vs .

E rror Due to Nois e on the B as e

C apacitance on T1

of R emote Trans is tor

5

1.6

7

100mV_{P -P}

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

6

25mV_{P -P}

0

5

4

3

-5

-10

10mV_{P -P}

3mV_{P -P}

50mV_{P -P}

2

1

-15

-20

25mV_{P -P}

10M

100M

0

1k

1

10 100

10k 100k 1M

1k

10M

100M

1

10 100

10k 100k 1M

FREQUENCY (Hz)

CAPACITANCE (pF)

November 2004

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MIC281

Micrel

Functional Description

Serial Port Operation

TheMIC281usesstandardSMBusWrite_ByteandRead_Byte

operations for communication with its host. The SMBus

Write_Byte operation involves sending the device’s slave

address (with the R/W bit low to signal a write operation),

followed by a command byte and the data byte. The SMBus

Read_Byteoperationisacompositewriteandreadoperation:

the host ﬁrst sends the device’s slave address followed by

the command byte, as in a write operation. A new start bit

must then be sent to the MIC281, followed by a repeat of the

slave address with the R/W bit (LSB) set to the high (read)

state. The data to be read from the part may then be clocked

out. These protocols are shown in Figures 1 and 2.

The Command byte is eight bits (one byte) wide. This byte

carries the address of the MIC281 register to be operated

upon.Thecommandbytevaluescorrespondingtothevarious

MIC281 registers are shown in Table 1. Other command byte

values are reserved, and should not be used.

MIC281 Slave Address

Command Byte

Data Byte to MIC281

S

1

0

1

A2 A1 A0

0

A

X

A

D7 D6 D5 D4 D3 D2 D1 D0 /A P

DATA

CLK

R/W = WRITE

ACKNOWLEDGE

NOT ACKNOWLEDGE

START

STOP

Master to slave transfer,

i.e., DATA driven by master.

Slave to master transfer,

i.e., DATA driven by slave.

Figure 1. Write_Byte Protocol

MIC281 Slave Address

Command Byte

MIC281 Slave Address

Data Read From MIC281

S

1

0

1

X

0

A

X

A

S

1

0

1

X

1

A

X

X /A P

DATA

CLK

R/W = WRITE

ACKNOWLEDGE

R/W = READ

ACKNOWLEDGE

NOT ACKNOWLEDGE

START

STOP

Master to slave transfer,

i.e., DATA driven by master.

Slave to master transfer,

i.e., DATA driven by slave.

Figure 2. Read_Byte Protocol

Command Byte

Value

Power-on

Default

Target Register

Label

Description

Read

01_h

Write

n/a

TEMP

Remote temperature result

Conﬁguration

00_h(0°C)

80_h

CONFIG

MFG_ID

DEV_ID

03_h

n/a

Manufacturer identiﬁcation

Device and revision identiﬁcation

FE_h

FF_h

2A_h

n/a

0x_h*

* The lower nibble contains the die revision level, e.g., Rev 0 = 00h.

Table 1. MIC281 Register Addresses

MIC281

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November 2004

MIC281

Micrel

Temperature

+127°C

+125°C

+25°C

Binary

Hex

7F

7D

19

Slave Address

0111 1111

0111 1101

0001 1001

0000 0001

0000 0000

1111 1111

1110 0111

1000 0011

1000 0000

The MIC281 will only respond to its own unique slave ad-

dress. A match between the MIC281’s address and the

address speciﬁed in the serial bit stream must be made to

initiate communication. The MIC281’s slave address is ﬁxed

at the time of manufacture. Eight different slave addresses

are available as determined by the part number. See Table

2 below and the Ordering Information table.

+1°C

01

0°C

00

–1°C

FF

E7

83

–25°C

Part Number

MIC281-0BM6

MIC281-1BM6

MIC281-2BM6

MIC281-3BM6

MIC281-4BM6

MIC281-5BM6

MIC281-6BM6

MIC281-7BM6

Slave Address

–125°C

–128°C

1001 000x_b= 90_h

1001 001x_b= 92_h

1001 010x_b= 94_h

1001 011x_b= 96_h

1001 100x_b= 98_h

1001 101x_b= 9A_h

1001 110x_b= 9C_h

1001 111x_b= 9E_h

80

Table 3. Digital Temperature Format

Diode Faults

The MIC281 is designed to respond in a failsafe manner to

diode faults. If an internal or external fault occurs in the tem-

perature sensing circuitry, such as T1 being open or shorted

to V or GND, the temperature result will be reported as the

DD

maximum full-scale value, +127°C. Note that diode faults will

notbedetecteduntiltheﬁrstA/Dconversioncycleiscompleted

following power-up or exiting shutdown mode.

Table 2. MIC281 Slave Addresses

Temperature Data Format

Shutdown Mode

Theleast-signiﬁcantbitofthetemperatureregisterrepresents

one degree Centigrade. The values are in a two’s comple-

ment format, wherein the most signiﬁcant bit (D7) represents

the sign: zero for positive temperatures and one for negative

temperatures. Table 3 shows examples of the data format

used by the MIC281 for temperatures.

Setting the shutdown bit in the conﬁguration register will

cause the MIC281 to cease operation. TheA/D converter will

stop and power consumption will drop to the I

registers will be affected by entering shutdown mode. The

last temperature reading will persist in the TEMP register.

level. No

SHDN

November 2004

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MIC281

Micrel

Detailed Register Descriptions

Remote Temperature Result (TEMP)

8-bits, read-only

Remote Temperature Result Register

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

read-only

Temperature Data from ADC

Bit

Function

Operation

Read-only

D[7:0]

Measured temperature data for the remote zone

Power-up default value: 0000 0000 = 00 (0°C)**

b

h

Command byte:

0000 0001 = 01

b

h

Each LSB represents one degree centigrade. The values are in a two’s complement binary format such that 0°C is reported

as 0000 0000b. See Temperature Data Format (above) for more details.

**TEMP will contain measured temperature data after the completion of one conversion.

Conﬁguration Register (CONFIG)

8-bits, read/write

Conﬁguration Register

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

reserved

write-only

Reserved

Shutdown

(SHDN)

reserved

Bits(s)

Function

Operation*

D7

Reserved

Always write as zero;

reads undeﬁned

SHDN

D[5:0]

Shutdown bit

Reserved

0 = normal operation, 1 =

shutdown

Always write as zero;

reads undeﬁned

Power-up default value: x0xx xxxx (Not in shutdown mode)

b

Command byte:

0000 0011 = 03

b h

* Any write to CONFIG will result in any A/D conversion in progress being aborted and the result discarded. The A/D will begin a new conver-

sion sequence once the write operation is complete.

MIC281

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November 2004

MIC281

Micrel

Manufacturer ID Register (MFG_ID)

8-bits, read-only

Manufacturer ID Register

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

read-only

0

1

0

1

0

1

0

BIT(S)

FUNCTION

Operation*

D[7:0]

Identiﬁes Micrel as the manufacturer of the device. Always returns 2A_h.

Read-only. Always returns 2A_h.

Power-up default value:

Read command byte:

0010 1010 = 2A

b

h

1111 1110 = FE

b

h

Die Revision Register (DIE_REV)

8-bits, read-only

Die Revision Register

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

read-only

MIC281 DIE REVISION NUMBER

Bit(s)

Function

Operation*

D[7:0]

Identiﬁes the device revision number

Read-only

Power-up default value:

Read command byte:

[Device revision number]

h

1111 1111 = FF

b

h

November 2004

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MIC281

Micrel

Series Resistance

Application Information

The operation of the MIC281 depends upon sensing the

ofadiode-connectedPNPtransistor(“diode“)attwodif-

Remote Diode Selection

V

CB-E

Mostsmall-signalPNPtransistorswithcharacteristicssimilar

totheJEDEC2N3906willperformwellasremote temperature

sensors. Table 4 lists several examples of such parts that

Micrel has tested for use with the MIC281. Other transistors

equivalent to these should also work well.

ferentcurrentlevels.Forremotetemperaturemeasurements,

this is done using an external diode connected between T1

and ground. Since this technique relies upon measuring the

relatively small voltage difference resulting from two levels of

current through the external diode, any resistance in series

with the external diode will cause an error in the temperature

reading from the MIC281. A good rule of thumb is this: for

each ohm in series with the external transistor, there will be a

0.9°C error in the MIC281’s temperature measurement. It is

not difﬁcult to keep the series resistance well below an ohm

(typically < 0.1Ω), so this will rarely be an issue.

Vendor

Part Number

MMBT3906

MMBT3906L

SMBT3906

Package

SOT-23

Fairchild Semiconductor

On Semiconductor

Inﬁneon Technologies

Samsung Semiconductor

KST3906-TF

Table 4. Transistors Suitable for Use as Remote

Diodes

Filter Capacitor Selection

It is usually desirable to employ a ﬁlter capacitor between the

T1 and GND pins of the MIC281. The use of this capacitor is

recommended in environments with a lot of high frequency

noise(suchasdigitalswitchingnoise),oriflongtracesorwires

are used to connect to the remote diode. The recommended

total capacitance from the T1 pin to GND is 2200pF. If the

remote diode is to be at a distance of more than 6”-12” from

theMIC281, usingtwistedpairwiringorshieldedmicrophone

cablefortheconnectionstothediodecansigniﬁcantlyreduce

noise pickup. If using a long run of shielded cable, remember

to subtract the cable’s conductor-to-shield capacitance from

the 2200pF total capacitance.

Minimizing Errors

Self-Heating

Oneconcernwhenusingapartwiththetemperatureaccuracy

and resolution of the MIC281 is to avoid errors induced by

self-heating (V × I ) + (V × I ). In order to understand

DD

OL

what level of error this might represent, and how to reduce

that error, the dissipation in the MIC281 must be calculated

and its effects reduced to a temperature offset. The worst-

case operating condition for the MIC281 is when V

3.6V. The maximum power dissipated in the part is given in

Equation 1 below.

=

DD

In most applications, the DATA pin will have a duty cycle of

substantiallybelow25%inthelowstate.Theseconsiderations,

combinedwithmoretypicaldeviceandapplicationparameters,

give a better system-level view of device self-heating. This

is illustrated by Equation 2. In any application, the best ap-

proach is to verify performance against calculation in the ﬁnal

application environment. This is especially true when dealing

withsystemsforwhichsometemperaturedatamaybepoorly

deﬁned or unobtainable except by empirical means.

P_D= [(I_DD×V_DD)+(I_OL(DATA)× V_OL(DATA))]

P_D= [(0.4mA×3.6V)+(6mA×0.5V)]

P_D= 4.44mW

R

of SOT23-6 package is 230°C/W, therefore...

θ(J-A)

the theoretical maximum self-heating is:

4.44mW×230°C/W = 1.02°C

Equation 1. Worst-Case Self-Heating

P_D= [(I_DD×V_DD)+(I_OL(DATA)× V_OL(DATA))]

P_D= [(0.23mA×3.3V)+(25% × 1.5mA×0.15V)]

P_D= 0.815mW

R

of SOT23-6 package is 230°C/W, therefore...

θ(J-A)

the typical self-heating is:

0.815mW×230°C/W = 0.188°C

Equation 2. Real-World Self-Heating Example

MIC281

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November 2004

MIC281

Micrel

4. Due to the small currents involved in the mea-

Layout Considerations

surement of the remote diode’s ∆V , it is

BE

Thefollowingguidelinesshouldbekeptinmindwhendesign-

ing and laying out circuits using the MIC281:

important to adequately clean the PC board after

soldering to prevent current leakage. This is

most likely to show up as an issue in situations

where water-soluble soldering ﬂuxes are used.

1. Place the MIC281 as close to the remote diode

as possible, while taking care to avoid severe

noise sources such as high frequency power

transformers, CRTs, memory and data busses,

etc.

5. In general, wider traces for the ground and T1

lines will help reduce susceptibility to radiated

noise (wider traces are less inductive). Use trace

widths and spacing of 10mm wherever possible

and provide a ground plane under the MIC281

and under the connections from the MIC281 to

the remote diode. This will help guard against

stray noise pickup.

2. Since any conductance from the various volt-

ages on the PC board and the T1 line can in-

duce serious errors, it is good practice to guard

the remote diode’s emitter trace with a pair of

ground traces. These ground traces should be

returned to the MIC281’s own ground pin. They

should not be grounded at any other part of their

run. However, it is highly desirable to use these

guard traces to carry the diode’s own ground

return back to the ground pin of the MIC281,

thereby providing a Kelvin connection for the

base of the diode. See Figure 3.

6. Always place a good quality power supply

bypass capacitor directly adjacent to, or un-

derneath, the MIC281. This should be a 0.1µF

ceramic capacitor. Surface mount parts provide

the best bypassing because of their low

inductance.

3. When using the MIC281 to sense the tempera-

ture of a processor or other device which has an

integral thermal diode, e.g., Intel’s Pentium III,

connect the emitter and base of the remote sen-

sor to the MIC281 using the guard traces and

Kelvin return shown in Figure 3. The collector of

the remote diode is typically inaccessible to the

user on these devices.

MIC281

VDD

GND

T1

NC

DATA

CLK

1

2

3

6

5

4

GUARD/RETURN

REMOTE DIODE (T1)

GUARD/RETURN

Figure 3. Guard Traces/Kelvin Ground Returns

November 2004

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MIC281

Micrel

Package Information

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)

3.00 (0.118)

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)

6-Lead SOT23 (M6)

MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com

This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use.

Micrel reserves the right to change circuitry and speciﬁcations at any time without notiﬁcation to the customer.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can

reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into

the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a signiﬁcant injury to the user. A Purchaser's

use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify

Micrel for any damages resulting from such use or sale.

MIC281

12

November 2004


型号：	MIC281-2YM6TR
厂家：	MICREL SEMICONDUCTOR
描述：	SPECIALTY ANALOG CIRCUIT, PDSO6, LEAD FREE, SOT-23, 6 PIN 传感器
文件：	总12页 (文件大小：174K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MIC281-2YM6TR [MICREL]

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