LT1301CN8#PBF_技术文档

LT1301

Micropower High Efficiency

5V/12V Step-Up DC/DC

Converter for Flash Memory

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DESCRIPTION

FEATURES

■

12V at 120mA from 5V or 3.3V Supply

TheLT1301isamicropowerstep-upDC/DCconverterthat

utilizes Burst Mode™ operation. The device can deliver 5V

or 12V from a two-cell battery input. It features program-

mable 5V or 12V output via a logic-controlled input, no-

loadquiescentcurrentof120µAandashutdownpinwhich

reducessupplycurrentto10µA.Theon-chippowerswitch

has a low 170mV saturation voltage at a switch current of

1A, a four-fold reduction over prior designs. A 155kHz

internal oscillator allows the use of extremely small sur-

facemountinductorsandcapacitors.Operationisguaran-

teedat1.8Vinput. Thisallowsmoreenergytobeextracted

fromthebattery, increasingoperatinglife. TheI_LIMpincan

be used for soft start or to program peak switch current

with a single resistor allowing the use of even smaller

inductors in lighter load applications. The LT1301 is

available in an 8-lead SOIC package, minimizing board

space requirements. For a selectable 3.3V/5V step-up

converter, please see the LT1300. For higher output

power, see the LT1302.

■

Supply Voltage as Low as 1.8V

■

Better High Current Efficiency Than CMOS

Up to 89% Efficiency

120µA Quiescent Current

■

Shutdown to 10µA

■

Programmable 5V or 12V Output

■

Low V_CESATSwitch: 170mV at 1A Typical

■

I_LIMPin Programs Peak Switch Current

■

Uses Inexpensive Surface Mount Inductors

■

8-Lead DIP or SOIC Package

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APPLICATIONS

■

Flash Memory V_PPGenerator

■

Palmtop Computers

■

Portable Instruments

■

Bar-Code Scanners

■

Personal Digital Assistants

PCMCIA Cards

■

Burst Mode is a trademark of Linear Technology Corporation.

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TYPICAL APPLICATIONS N

L1

Output Voltage

Efficiency

D1

33µH

5V

OR

3.3V

12V

OUTPUT

90

88

86

12V

V_OUT

2V/DIV

V

IN

= 5V

SW

V

IN

SELECT

SENSE

V

IN

= 3.3V

+

84

82

80

78

76

74

72

0

C1

LT1301

47µF

C2

33µF

20V

+

0.1µF*

SHDN

PGND

I

N/C

SHUTDOWN

LIM

GND

SHUTDOWN

10V/DIV

1ms/DIV

LT1301 TAO1

*REQUIRED FOR 5V OUTPUT

V

_IN= 5V, V_OUT= 12V

LT1301 F1

LOAD = 100Ω

L1 = COILCRAFT DO3316-333

OR SUMIDA CD73-330KC

D1 = 1N5817 OR MOTOROLA

MBRS130LT3

1

10

LOAD CURRENT (mA)

100

300

C1 = AVX TPSD476M016R0100

OR SANYO OS-CON 165A47M

C2 = AVX TPSD336M020R0100

OR SANYO OS-CON 205A33M

LT1301 TA2

LT1300 F2

Figure 1. 3.3V/5V to 12V Step-Up Converter

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LT1301

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ABSOLUTE MAXIMUM RATINGS

PACKAGE/ORDER INFORMATION

V_INVoltage .............................................................. 10V

SW1 Voltage ............................................................ 20V

Sense Voltage .......................................................... 20V

Shutdown Voltage ................................................... 10V

Select Voltage .......................................................... 10V

ORDER PART

TOP VIEW

NUMBER

GND

SEL

1

2

3

4

PGND

SW

8

7

6

5

LT1301CN8

LT1301CS8

LT1301IS8

SHDN

SENSE

V

IN

I

LIM

I_LIMVoltage ............................................................ 0.5V

Maximum Power Dissipation ............................. 500mW

Operating Temperature Range

N8 PACKAGE

8-LEAD PLASTIC DIP

S8 PACKAGE

8-LEAD PLASTIC SOIC

S8 PART MARKING

LT1301C................................................... 0°C to 70°C

LT1301I .................................................. 40°C to 85°C

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

Lead Temperature (Soldering, 10 sec).................. 300°C

T_JMAX= 100°C, θ_JA= 150°C/ W

1301

1301I

ELECTRICAL CHARACTERISTICS ^T_A^{= 25°C, V}_IN= 2V unless otherwise noted.

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

I

Quiescent Current

V

= 0.5V, V = 5V, V = 5.5V

SENSE

= 1.8V

●

120

7

200

15

µA

Q

SHDN

SEL

V

Input Voltage Range

Output Sense Voltage

1.8

2.0

V

IN

●

V

= 5V

= 0V

●

11.52 12.00 12.48

4.75

OUT

SEL

5.00

5.25

Output Referred

Comparator Hysteresis

V

= 5V (Note 1)

= 0V (Note 1)

●

50

22

100

50

mV

SEL

Oscillator Frequency

Oscillator TC

Maximum Duty Cycle

Switch On-Time

Current Limit not Asserted.

120

75

155

0.2

86

185

kHz

%/°C

%

DC

95

t

Current Limit not Asserted.

5.6

µs

ON

Output Line Regulation

Switch Saturation Voltage

Switch Leakage Current

1.8V < V < 6V

●

0.06

130

0.1

0.15

200

10

%/V

mV

µA

IN

V

I

= 700mA

SW

CESAT

V

= 5V, Switch Off

SW

Peak Switch Current

(Internal Trip Point)

Shutdown Pin High

Shutdown Pin Low

Select Pin High

I

Floating (See Typical Application)

Grounded

0.75

1.8

1.0

0.4

1.25

A

V

µA

LIM

V

●

SHDNH

SHDNL

SELH

0.5

●

1.5

Select Pin Low

Shutdown Pin Bias Current

0.8

20

SELL

I

V

= 5V

= 2V

= 0V

●

8

3

0.1

SHDN

1

3

I

Select Pin Bias Current

0V < V

< 5V

●

1

µA

SEL

Note 1: Hysteresis specified is DC. Output ripple may be higher if

output capacitance is insufficient or capacitor ESR is excessive.

See operation section.

The

● denotes specifications which apply over the 0°C to 70°C

temperature range.

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LT1301

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TYPICAL PERFORMANCE CHARACTERISTICS

Total Quiescent Current

in Shutdown

Shutdown Pin Bias Current

5V Output Efficiency

20

18

16

14

12

10

8

90

88

86

84

80

70

60

50

40

30

20

10

0

T = 25°C

A

T

= 25°C

A

V

= 3.3V

IN

V

= 2.5V

IN

82

80

78

76

74

72

70

6

4

2

0

4

5

0

1

2

3

6

7

8

7

1

10

100

1000

0

4

6

1

2

3

5

8

SHUTDOWN VOLTAGE (V)

INPUT VOLTAGE (V)

LOAD CURRENT (mA)

LT1301 G1

LT1301 G2

LT1300 G3

Load Transient Response of

Figure 1 Circuit

Saturation Voltage vs Switch Current

No-Load Input Current

250

225

500

450

400

350

T

A

= 25°C

V_OUT

100mV/DIV

AC COUPLED

200

175

150

125

100

75

V

OUT

= 12V

120mA

I_LOAD

300

250

0mA

200µs/DIV

LT1301 G6

V_IN= 5V

200

150

100

50

V

= 5V

3

OUT

25

0

4

6

2

7

0

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

SWITCH CURRENT (A)

1

5

INPUT VOLTAGE (V)

LT1301 G5

LT1301 G4

Load Transient Response of

Figure 1 Circuit

Select Pin Transient Response

12V

V_OUT

100mV/DIV

AC COUPLED

V_OUT

2V/DIV

V_OUT

2V/DIV

5V

120mA

I_LOAD

V_SELECT

10V/DIV

V_SELECT

10V/DIV

0mA

200µs/DIV

5ms/DIV

C_OUT= 100µF, V_IN= 5V

100Ω LOAD

5ms/DIV

LT1301 G9

LT1301 G7

LT1301 G8

V_IN= 3.3V

C_OUT= 100µF, V_IN= 3.3V

100Ω LOAD

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LT1301

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PIN FUNCTIONS

GND (Pin 1): Signal Ground. Tie to PGND under the

package.

for approximately 400mA. A resistor between I_LIMand

ground sets peak current to some intermediate value .

Sel (Pin 2): Output Select. When tied to V_INconverter

regulates at 12V. When grounded or floating converter

regulates at 5V. May be driven under logic control.

V_IN(Pin 6): Supply Pin. Must be bypassed with a large

valueelectrolytictoground. Keepbypasswithin0.2"ofthe

device.

SHDN (Pin 3): Shutdown. Pull high to shut down the

SW (Pin 7): Switch Pin. Connect inductor and diode here.

Keep layout short and direct to minimize radio frequency

interference.

LT1301. Ground for normal operation.

Sense (Pin 4): “Output” Pin. Goes to internal resistive

divider. If operating at 5V output, a 0.1µF ceramic capaci-

tor is required from Sense to Ground.

PGND (Pin 8): Power Ground. Tie to signal ground (pin 1)

under the package. Bypass capacitor from V_INshould be

tied directly to PGND within 0.2" of the device.

I_LIM(Pin5):Floatfor1Aswitchcurrentlimit. Tietoground

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BLOCK DIAGRAM

D1

V

L1

IN

V

OUT

+

C2

C1

V

IN

SW

SENSE

4

2

7

18mV

A2 CURRENT

COMPARATOR

R1

3Ω

+

–

R2

730Ω

500k

A1

OFF

COMPARATOR

+

–

1.25V

REFERENCE

ENABLE OSCILLATOR

155kHZ

Q1

160×

A3 DRIVER

BIAS

Q2

1×

97.5k

69.2k

Q3

8.5k

SHUTDOWN

3

GND

SELECT

PGND

8

I

LIM

1

2

5

LT1301 F2

Figure 2.

4

LT1301

5V

TEST CIRCUITS

2V

100Ω

V

IN

I

L

f

SEL

SW

OUT

100µF

LT1301

SHDN

PGND

SENSE

GND

LT1301 TC

Oscillator Test Circuit

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OPERATION

the voltage across 3Ω resistor R1 which is directly related

to the switch current. Q2’s collector current is set by the

emitter-area ratio to 0.6% of Q1’s collector current. When

R1’s voltage drop exceeds 18mV, corresponding to 1A

switch current, A2’s output goes high, truncating the on-

time portion of the oscillator cycle and increasing off-time

to about 2µs as shown in Figure 3, trace A. This pro-

grammedpeakcurrentcanbereducedbytyingtheI_LIMpin

to ground, causing 15µA to flow through R2 into Q3’s

collector. Q3’scurrentcausesa10.4mVdropinR2sothat

only an additional 7.6mV is required across R1 to turn off

the switch. This corresponds to a 400mA switch current

as shown in Figure 3, trace B. The reduced peak switch

current reduces I²R loses in Q1, L1, C1 and D1. Efficiency

can be increased by doing this provided that the accom-

panying reduction in full load current is acceptable. Lower

peak currents also extend alkaline battery life due to the

alkaline cell’s high internal impedance.

OperationoftheLT1301isbestunderstoodbyreferringto

the Block Diagram in Figure 2. When A1’s negative input,

related to the Sense pin voltage by the appropriate resis-

tor-divider ratio is higher that the 1.25V reference voltage,

A1’s output is low. A2, A3 and the oscillator are turned off,

drawing no current. Only the reference and A1 consume

current, typically 120µA. When A1’s negative input drops

below 1.25V, overcoming A1’s 6mV hysteresis, A1’s out-

put goes high enabling the oscillator, current comparator

A2, and driver A3. Quiescent current increases to 2mA as

the device prepares for high current switching. Q1 then

turns on in controlled saturation for (nominally) 5.3µs or

until comparator A2 trips, whichever comes first. After a

fixed off-time of (nominally) 1.2µs, Q1 turns on again. The

LT1301’s switching causes current to alternately build up

inL1anddumpintooutputcapacitorC2viaD1, increasing

the output voltage. When the output is high enough to

cause A1’s output to go to low, switching action ceases.

C2 is left to supply current to the load until V_OUTdecreases

enough to force A1’s output high, and the entire cycle

repeats. Figure 4 details relevant waveforms. A1’s cycling

causeslow-to-mid-frequencyripplevoltageontheoutput.

Ripple can be reduced by making the output capacitor

large. The 33µF unit specified results in ripple of 100mV to

200mVonthe12Voutput. A100µFcapacitorwilldecrease

ripple to 50mV. If operating at 5V ouput a 0.1µF ceramic

capacitor is required at the Sense pin in addition to the

electrolytic.

TRACE A

500mA/DIV

I_LIMPIN

OPEN

TRACE B

500mA/DIV

I_LIMPIN

GROUNDED

20µs/DIV

Figure 3. Switch Pin Current With I_LIMFloating or Grounded

Ifswitchcurrentreaches1A, causingA2totrip, switchon-

timeisreducedandoff-timeincreasesslightly.Thisallows

continuous mode operation during bursts. A2 monitors

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LT1301

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APPLICATIONS INFORMATION

V_OUT

100mV/DIV

AC COUPLED

V_OUT

5V/DIV

V_SW

10V/DIV

I_IN

500mA/DIV

V_SHDN

10V/DIV

I_L

500mA/DIV

LT1300 F4

20µs/DIV

200µs/DIV

LT1300 F5

V

_IN= 5V, V_OUT= 12V

V_IN= 5V, V_OUT= 12V, L = 33µH

C

_OUT= 33µF, I_LOAD= 90mA

Figure 5. Start-Up Response

Figure 4. Burst Mode Operation in Action

D1

1N5817

L1

33µH

Output Voltage Selection

V

IN

3.3V OR 5V

The LT1301 can be selected to 5V or 12V under logic

control or fixed at either by tying Select to ground or V_IN

respectively. It is permissible to tie Select to a voltage

higher than V_INas long as it does not exceed 10V.

Efficiency in 5V mode will be slightly less that in 12V mode

due to the fact that the diode drop is a greater percentage

of5Vthan12V. SincethebipolarswitchintheLT1301gets

its base drive from V_IN, no reduction in switch efficiency

occurs when in 5V mode. When V_INexceeds the pro-

grammed output voltage the output will follow the input.

This is characteristic of the simple step-up or “boost”

converter topology. A circuit example that provides a

regulated output with an input voltage above or below the

output (known as a buck-boost or SEPIC) is shown in the

Typical Applications section.

SW

V

IN

SELECT

SENSE

12V

+

47µF

LT1301

+

C2

33µF

SHDN

GND

SHUTDOWN

I

LIM

PGND

R1

1M

C3

0.1µF

LT1301 F6

Figure 6.

V_OUT

5VDIV

I_IN

500mA/DIV

Shutdown

V_SHDN

10V/DIV

The converter can be turned off by pulling SHDN (pin 3)

high. Quiescent current drops to 10µA in this condition.

Biascurrentof8µAto10µAflowsintothepin(at5V input).

It is recommended that SHDN not be left floating. Tie the

pintogroundifthefeatureisnotused.SHDNcanbedriven

high even if V_INis floating.

200µs/DIV

LT1300 F5

V_IN= 5V, V_OUT= 12V

Figure 7. Startup Response Soft-Start Circuitry Added

adding R1 and C3 as shown in Figure 6, the switch

current in the LT1301 is initially limited to 400mA until

the 15µA flowing out of the I_LIMpin charges up C3. Input

current is held to under 500mA while the output voltage

ramps up to 12V as shown in Figure 7. R1 provides a

discharge path for the capacitor without appreciably de-

creasingpeakswitchcurrent. WhenusingtheI_LIMpinsoft-

start mode a minimum load of a few hundred microam-

peres is recommended to prevent C3 from discharging, as

no current flows out of I_LIMwhen the LT1301 is not

I_LIMFunction

The LT1301’s current limit (I_LIM) pin can be used for soft

start. Upon start-up, the LT1301 will draw maximum

current from the supply (about 1A) from the supply to

charge the output capacitor. Figure 5 shows V_OUTand I_IN

waveforms as the device is turned on. The high current

flow can create IR drops along supply and ground lines

or cause the input supply to drop out momentarily. By

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LT1301

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APPLICATIONS INFORMATION

Table 1. Recommended Inductors

EFFICIENCY (%)

30mA 60mA 120mA

COMPONENT

HEIGHT (mm)

PART NUMBER

VENDOR

L (µ

H) DCR (Ω) V (V)

I

LIM

PHONE NUMBER

IN

DO3316-333

Coilcraft

33

0.088

3.3

Open

Ground

10k

Ground

Open

84

89

82

85

86

88

78

84

88

86

89

81

85

84

88

80

85

84

83

84

89

82

—

87

—

84

88

86

89

—

85

88

80

—

84

—

85

90

—

89

87

90

—

86

89

81

—

85

—

5.5

(708) 639–6400

5

3.3

5

2

3.3

5

3.3

5

3.3

5

3.3

5

DO1608-223

Coilcraft

22

.31

3.5

DO1608-103

CTX20-1

Coilcraft

Coiltronics

10

20

.11

.175

3.5

4.2

(407) 241-7876

(716) 532-2234

(404) 436-1300

(708) 956-0666

GA10-332

Gowanda

33

22

33

.077

0.7

Through-Hole

Open

LQH3G220K04M00 Murata-Erie

Ground

Open

Ground

Open

Ground

2.0

3.5

3.0

CD73-330KC

Sumida

0.131

0.48

CDRH62-330MC

3.3

5

Table 2. Recommended Capacitors

switching. Zero load current causes the LT1301 to switch

so infrequently that C3 can completely discharge reducing

subsequent peak switch current to 400mA. If a load is

suddenly applied, output voltage will sag until C3 can be

recharged and peak switch current returns to 1A.

VENDOR

AVX

SERIES

TPS

TYPE

PHONE#

Surface Mount

Through-Hole

(803)448–9411

(619) 661–6835

(201) 348-5200

Sanyo

Panasonic

OS-CON

HFQ

If the full capacity of the LT1301 is not required peak

current can be reduced by changing the value of R3 as

shown in Figure 8. With R3 = 0 switch current is limited to

approximately 400mA. Smaller, less expensive inductors

with lower saturation ratings can then be used.

1100

1000

900

800

700

600

500

400

300

1.6V ≤ V ≤ 5V

IN

Inductor Selection

For full output power, the inductor should have a satura-

tion current rating of 1.25A for worst-case current limit,

although it is acceptable to bias an inductor 20% or more

into saturation. Smaller inductors can be used in conjunc-

tion with the I_LIMpin. Efficiency is significantly affected by

inductor DCR. For best efficiency limit the DCR to 0.03Ω

or less. Toroidal types are preferred in some cases due to

their inherent flux containment and EMI/RFI superiority.

Recommended inductors are listed in Table 1.

100

1k

10k

100k

1M

CURRENT LIMIT SET RESISTOR (Ω)

LT1301 F8

Figure 8. Peak Switch Current vs. Current Limit Set Resistor

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LT1301

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APPLICATIONS INFORMATION

Capacitor Selection

Diode Selection

LowESRcapacitorsarerequiredforbothinputandoutput

of the LT1301. ESR directly affects ripple voltage and

efficiency.ForsurfacemountapplicationsAVXTPSseries

tantalum capacitors are recommended. These have been

speciallydesignedforSMPSandhavelowESRalongwith

high surge current ratings. For through-hole applications

Sanyo OS-CON capacitors offer extremely low ESR in a

small size. Again, if peak switch current is reduced using

the I_LIMpin, capacitor requirements can be relaxed and

smaller, higher ESR units can be used. Suggested capaci-

tor sources are listed in Table 2.

Best performance is obtained with a Schottky rectifier

diode such as the 1N5817. Phillips Components makes

this in surface mount as the PRLL5817. Motorola makes

the MBRS130LT3 which is slightly better and also in

surface mount. For lower output power a 1N4148 can be

used although efficiency will suffer substantially.

Layout Considerations

The LT1301 is a high speed, high current device. The input

capacitor must be no more than 0.2˝ from V_IN(pin 6) and

ground. Connect the PGND and GND (pins 8 and 1)

together under the package. Place the inductor adjacent to

SW (pin 7) and make the switch pin trace as short as

possible. This keeps radiated noise to a minimum.

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TYPICAL APPLICATIONS N

Four-Cell to 5V Converter

C2

100µF

+

L1

33µH

1N5817

5V OUTPUT

SW

V

IN

200mA

I

SENSE

NC

LIM

80 to 83% EFFICIENT

+

AT I

> 10mA

C1

100µF

LOAD

LT1301

4 CELLS

0.1µF

+

C3

100µF

L2

33µH

SHDN

GND

SELECT

PGND

SHUTDOWN

LT1301 TAO3

Step-Up Converter with Automatic Output Disconnect

470Ω

L1*

2N4403

1N5817

10µH

5V, 200mA

NC

+

SELECT

SHDN

V

IN

2×

100µF

AA

SHUTDOWN

100µF

SW

CELL

+

LT1301

I

NC

SENSE

PGND

LIM

GND

0.1µF

*SUMIDA CD54-100LC

COILCRAFT DO3316-223

LT1301 TA4

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LT1301

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TYPICAL APPLICATIONS N

LCD Contrast Supply

CONTRAST

–4V TO –29V 12mA

MAXIMUM FROM 1.8V SUPPLY

(77% EFFICIENT)

20mA MAXIMUM FROM

3V SUPPLY (83% EFFICIENT)

V

OUT

V

IN

T1

4

1.8V TO 6V

7

3

1

22µF

35V

150K

+

8

2

10

9

1N5819

V

IN

SW

SHUTDOWN

SHDN

NC SENSE

+

LT1301

100µF

NC

I

SELECT

LIM

PGND

GND

12K

+

T1 = DALE LPE-5047-AO45 (605) 665-9301

2.2µF

PWM IN

0% TO 100%

CMOS DRIVE 0V TO 5V

LT1300 TA5

Low-Voltage CCFL Power Supply

9

3

7

22pF

3kV

TI

5

1

4

2

V

IN

2V - 6V

1Ω

0.068µF

120Ω

1N5817

L1

CCFL

ZTX849

WIMA

MKP20

V

SELECT

47µH

IN

SW

SENSE

NC

+

LT1301

10µF

0.1µF

2N3904

SHDN

GND

I

LIM

PGND

+

7.5K

1%

1N4148

1µF

SHUTDOWN

0 - 5V IN

DC

LT1300 TA6

INTENSITY ADJUST

100µA TO 2mA BULB CURRENT

T1 = COILTRONICS CTX110654-1

L1 = COILCRAFT D03316-473

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LT1301

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TYPICAL APPLICATIONS N

5V to –5V Converter

L1

33µH

–V

300mA

5V

OUT

5V

2

3

4

33µF

+

1N965

1N5817

1

1N4148

+

33µF

V

SW

SHDN

IN

SELECT

NC

SHUTDOWN

LT1301

OR

LT1300

4.99K

1%

0.1µF

SENSE

GND

I

LIM

PGND

4.99K

1%

LT1301 TA7

5V

L1 = COILTRONICS CTX33-4

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LT1301

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Dimensions in inches (millimeters) unless otherwise noted.

PACKAGE DESCRIPTION

N8 Package

8-Lead Plastic DIP

0.400

(10.160)

MAX

0.130 ± 0.005

(3.302 ± 0.127)

0.300 – 0.320

(7.620 – 8.128)

0.045 – 0.065

(1.143 – 1.651)

8

1

7

6

5

4

0.065

(1.651)

TYP

0.250 ± 0.010

(6.350 ± 0.254)

0.009 – 0.015

(0.229 – 0.381)

0.125

0.020

(0.508)

MIN

(3.175)

MIN

+0.025

–0.015

0.045 ± 0.015

(1.143 ± 0.381)

2

3

0.325

+0.635

8.255

(

)

–0.381

0.100 ± 0.010

(2.540 ± 0.254)

0.018 ± 0.003

(0.457 ± 0.076)

N8 0392

S8 Package

8-Lead Plastic S0IC

0.189 – 0.197*

(4.801 – 5.004)

0.010 – 0.020

(0.254 – 0.508)

7

5

8

6

× 45°

0.053 – 0.069

(1.346 – 1.752)

0.004 – 0.010

0.008 – 0.010

(0.203 – 0.254)

(0.101 – 0.254)

0°– 8° TYP

0.150 – 0.

(3.810 – 3.

0.228 – 0.244

(5.791 – 6.197)

0.016 – 0.050

0.406 – 1.270

0.050

(1.270)

BSC

0.014 – 0.019

(0.355 – 0.483)

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.

MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).

1

2

3

4

SO8 0294

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.

11

LT1301

U.S. Area Sales Offices

SOUTHWEST REGION

Linear Technology Corporation

22141 Ventura Blvd.

SOUTHEAST REGION

Linear Technology Corporation

17060 Dallas Parkway

Suite 208

Dallas, TX 75248

Phone: (214) 733-3071

FAX: (214) 380-5138

NORTHEAST REGION

Linear Technology Corporation

One Oxford Valley

2300 E. Lincoln Hwy.,Suite 306

Langhorne, PA 19047

Phone: (215) 757-8578

FAX: (215) 757-5631

Suite 206

Woodland Hills, CA 91364

Phone: (818) 703-0835

FAX: (818) 703-0517

NORTHWEST REGION

Linear Technology Corporation

782 Sycamore Dr.

CENTRAL REGION

Linear Technology Corporation

Chesapeake Square

Linear Technology Corporation

266 Lowell St., Suite B-8

Wilmington, MA 01887

Milpitas, CA 95035

Phone: (408) 428-2050

FAX: (408) 432-6331

229 Mitchell Court, Suite A-25

Addison, IL 60101

Phone: (708) 620-6910

FAX: (708) 620-6977

Phone: (508) 658-3881

FAX: (508) 658-2701

International Sales Offices

KOREA

FRANCE

Linear Technology Korea Branch

Namsong Building, #505

Itaewon-Dong 260-199

Yongsan-Ku, Seoul

Korea

TAIWAN

Linear Technology S.A.R.L.

Immeuble "Le Quartz"

58 Chemin de la Justice

92290 Chatenay Malabry

France

Linear Technology Corporation

Rm. 801, No. 46, Sec. 2

Chung Shan N. Rd.

Taipei, Taiwan, R.O.C.

Phone: 886-2-521-7575

FAX: 886-2-562-2285

Phone: 82-2-792-1617

FAX: 82-2-792-1619

Phone: 33-1-41079555

FAX: 33-1-46314613

SINGAPORE

UNITED KINGDOM

GERMANY

Linear Technology Pte. Ltd.

101 Boon Keng Road

#02-15 Kallang Ind. Estates

Singapore 1233

Linear Technology (UK) Ltd.

The Coliseum, Riverside Way

Camberley, Surrey GU15 3YL

United Kingdom

Linear Techonolgy GmbH

Untere Hauptstr. 9

D-85386 Eching

Germany

Phone: 65-293-5322

FAX: 65-292-0398

Phone: 44-276-677676

FAX: 44-276-64851

Phone: 49-89-3197410

FAX: 49-89-3194821

JAPAN

Linear Technology KK

5F YZ Bldg.

4-4-12 Iidabashi, Chiyoda-Ku

Tokyo, 102 Japan

Phone: 81-3-3237-7891

FAX: 81-3-3237-8010

World Headquarters

Linear Technology Corporation

1630 McCarthy Blvd.

Milpitas, CA 95035-7487

Phone: (408) 432-1900

FAX: (408) 434-0507

08/16/93

LT/GP 0394 10K • PRINTED IN USA

12 ^{Linear Technology Corporation}

1630 McCarthy Blvd., Milpitas, CA 95035-7487

●

LINEAR TECHNOLOGY CORPORATION 1994

(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977


型号：	LT1301CN8#PBF
厂家：	Linear
描述：	暂无描述转换器闪存开关光电二极管
文件：	总12页 (文件大小：287K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LT1301CN8#PBF [Linear]

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