Datasheet LT1301 Datasheet (Linear Technology)

FEATURES

LOAD CURRENT (mA)

10 100 300

LT1301 TA2

1

0

72

74

EFFICIENCY (%)

76

78

80

82

90

84

86

88

VIN = 5V

VIN = 3.3V

■

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

■

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

■

I

Pin Programs Peak Switch Current

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■

Uses Inexpensive Surface Mount Inductors

■

8-Lead DIP or SOIC Package

Switch: 170mV at 1A Typical

CESAT

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APPLICATIONS

■

Flash Memory VPP Generator

■

Palmtop Computers

■

Portable Instruments

■

Bar-Code Scanners

■

Personal Digital Assistants

■

PCMCIA Cards

LT1301

Micropower High Efficiency

5V/12V Step-Up DC/DC

Converter for Flash Memory

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DESCRIPTION

The LT1301 is a micropower step-up DC/DC converter that
utilizes Burst Mode™ operation. The device can deliver 5V
or 12V from a two-cell battery input. It features program­mable 5V or 12V output via a logic-controlled input, no­load quiescent current of 120µ A and a shutdown pin which
reduces supply current to 10µ A. The on-chip power switch
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 sur­face mount inductors and capacitors. Operation is guaran­teed at 1.8V input. This allows more energy to be extracted
from the battery, increasing operating life. The I
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.

Burst Mode is a trademark of Linear Technology Corporation.

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pin can

3.3V

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TYPICAL APPLICATIONS N

L1

V

IN

SELECT

SHDN
PGND

33µH

LT1301

5V
OR

+

C1
47µF

SHUTDOWN

*REQUIRED FOR 5V OUTPUT

L1 = COILCRAFT DO3316-333

OR SUMIDA CD73-330KC

D1 = 1N5817 OR MOTOROLA

MBRS130LT3

C1 = AVX TPSD476M016R0100

OR SANYO OS-CON 165A47M

C2 = AVX TPSD336M020R0100

OR SANYO OS-CON 205A33M

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

SW

SENSE

I

LIM

GND

D1

N/C

+

12V
OUTPUT

C2
33µF
20V


LT1301 F1

0.1µF*


12V

V

OUT

2V/DIV

SHUTDOWN

10V/DIV

V

= 5V, V

IN

LOAD = 100Ω

Output Voltage

1ms/DIV

= 12V

OUT

Efficiency

LT1301 TAO1

LT1300 F2

1

LT1301

WW

W

ABSOLUTE MAXIMUM RATINGS

VIN Voltage .............................................................. 10V

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

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

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

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

I

Voltage ............................................................ 0.5V

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

Operating Temperature Range

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

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

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PACKAGE/ORDER INFORMATION

TOP VIEW

GND

1

SEL

2

SHDN

3

SENSE

4

N8 PACKAGE

8-LEAD PLASTIC DIP



T

= 100°C, θJA = 150°C/W

JMAX

PGND

8

SW

7

V

6

IN

I

5

LIM



S8 PACKAGE

8-LEAD PLASTIC SOIC



ORDER PART

NUMBER

LT1301CN8
LT1301CS8

LT1301IS8

S8 PART MARKING

1301

1301I

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

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

ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

I

Q

VINInput Voltage Range 1.8 V

V

OUT

DC Maximum Duty Cycle 75 86 95 %
t

ON

V

CESAT

V

SHDNH

V

SHDNL

V

SELH

V

SELL

I

SHDN

I

SEL

The ● denotes specifications which apply over the 0°C to 70°C
temperature range.

Quiescent Current V

Output Sense Voltage V

Output Referred V
Comparator Hysteresis V

Oscillator Frequency Current Limit not Asserted. 120 155 185 kHz
Oscillator TC 0.2 %/°C

Switch On-Time Current Limit not Asserted. 5.6 µs
Output Line Regulation 1.8V < VIN < 6V ● 0.06 0.15 %/V
Switch Saturation Voltage ISW = 700mA ● 130 200 mV
Switch Leakage Current VSW = 5V, Switch Off ● 0.1 10 µA
Peak Switch Current I

(Internal Trip Point) I
Shutdown Pin High ● 1.8 V
Shutdown Pin Low 0.5 V
Select Pin High ● 1.5 V
Select Pin Low ● 0.8 V
Shutdown Pin Bias Current V

Select Pin Bias Current 0V < V

= 0.5V, V

SHDN

V

= 1.8V ● 715 µA

SHDN

= 5V ● 11.52 12.00 12.48 V

SEL

V

= 0V ● 4.75 5.00 5.25 V

SEL

= 5V (Note 1) ● 50 100 mV

SEL

= 0V (Note 1) ● 22 50 mV

SEL

Floating (See Typical Application) 0.75 1.0 1.25 A

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Grounded 0.4 A

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= 5V ● 820 µA

SHDN

V

= 2V ● 3 µA

SHDN

V

= 0V ● 0.1 1 µA

SHDN

< 5V ● 13 µA

SEL

SEL

= 5V, V

TA = 25°C, V

= 5.5V ● 120 200 µA

SENSE

= 2V unless otherwise noted.

IN

● 2.0 V

Note 1: Hysteresis specified is DC. Output ripple may be higher if
output capacitance is insufficient or capacitor ESR is excessive.
See operation section.

2

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SHUTDOWN VOLTAGE (V)

0



SHUTDOWN CURRENT (µA)

0

4

6

8

20

12

14

2

4

5

LT1300 G3

2

16

18

10

13

6

7

8

T

A

= 25°C

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TYPICAL PERFORMANCE CHARACTERISTICS

Total Quiescent Current

5V Output Efficiency

90
88
86
84
82

80
78

EFFICIENCY (%)

76
74
72
70

1

VIN = 3.3V

VIN = 2.5V

10 100 1000

LOAD CURRENT (mA)

LT1301 G1

Saturation Voltage vs Switch Current No-Load Input Current

250

TA = 25°C

225

200
175

150
125
100

75

SATURATION VOLTAGE (mV)

50
25

0

0 0.1

0.2 0.3
SWITCH CURRENT (A)

0.4 0.5

0.6 0.7

0.8 0.9

LT1301 G4

1

in Shutdown

80

TA = 25°C

70

60

(µA)

50

SENSE

+ I

40

VIN

+ I

30

SHDN

I

20

10

0

1

0

500

450

400

350

300

250

INPUT CURRENT (µA)

200

150

100

2

2

V

OUT

= 5V

V

OUT

34 6

4

3

INPUT VOLTAGE (V)

= 12V

5

INPUT VOLTAGE (V)

5

6

7

LT1301 G2

LT1301 G5

8

AC COUPLED

I

7

V

OUT

100mV/DIV

120mA

LOAD

0mA

LT1301

Shutdown Pin Bias Current

Load Transient Response of
Figure 1 Circuit

VIN = 5V

200µs/DIV

LT1301 G6

Load Transient Response of
Figure 1 Circuit

V

OUT

100mV/DIV

AC COUPLED

120mA

I

LOAD

0mA

VIN = 3.3V

Select Pin Transient Response

12V

V

OUT

2V/DIV

5V

V

SELECT

200µs/DIV

LT1301 G7

10V/DIV

C

= 100µF, VIN = 5V

OUT

100Ω LOAD

5ms/DIV

LT1301 G8

Select Pin Transient Response

12V

V

OUT

2V/DIV

5V

V

SELECT

10V/DIV

5ms/DIV

C

= 100µF, VIN = 3.3V

OUT

100Ω LOAD

LT1301 G9

3

LT1301

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PIN FUNCTIONS

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

Sel (Pin 2): Output Select. When tied to VIN converter
regulates at 12V. When grounded or floating converter
regulates at 5V. May be driven under logic control.

SHDN (Pin 3): Shutdown. Pull high to shut down the
LT1301. Ground for normal operation.

Sense (Pin 4): “Output” Pin. Goes to internal resistive
divider. If operating at 5V output, a 0.1µ F ceramic capaci­tor is required from Sense to Ground.

I

(Pin 5): Float for 1A switch current limit. Tie to ground

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BLOCK DIAGRAM

V

IN

+

C1

for approximately 400mA. A resistor between I

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and

ground sets peak current to some intermediate value .
VIN (Pin 6): Supply Pin. Must be bypassed with a large

value electrolytic to ground. Keep bypass within 0.2" of the
device.

SW (Pin 7): Switch Pin. Connect inductor and diode here.
Keep layout short and direct to minimize radio frequency
interference.

PGND (Pin 8): Power Ground. Tie to signal ground (pin 1)
under the package. Bypass capacitor from VIN should be
tied directly to PGND within 0.2" of the device.

L1

D1

V

OUT

+

C2



1.25V

REFERENCE

4

GND

1

SENSE

500k

97.5k

69.2k

SELECT

2

A1
COMPARATOR

+

–

ENABLE

V

IN

2

OFF

OSCILLATOR

155kHZ

SHUTDOWN

3

Figure 2.

A2 CURRENT 

COMPARATOR



A3 DRIVER

BIAS

SW

7

18mV

+

R1

3Ω

R2

730Ω

–

Q1

Q2

160×

1×

Q3

8.5k
I

LIM

58

PGND

LT1301 F2

4

S



TEST CIRCUIT

LT1301

5V

2V

SEL

V

IN

I

L

SW

100Ω

f

OUT

100µF

Oscillator Test Circuit

LT1301

SENSE

GND PGND

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OPERATION

Operation of the LT1301 is best understood by referring to
the Block Diagram in Figure 2. When A1’s negative input,
related to the Sense pin voltage by the appropriate resis­tor-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 120µ A. When A1’s negative input drops
below 1.25V, overcoming A1’s 6mV hysteresis, A1’s out­put 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) 5.3µ s or
until comparator A2 trips, whichever comes first. After a
fixed off-time of (nominally) 1.2µ s, Q1 turns on again. The
LT1301’s switching causes current to alternately build up
in L1 and dump into output capacitor C2 via D1, 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
enough to force A1’s output high, and the entire cycle
repeats. Figure 4 details relevant waveforms. A1’s cycling
causes low-to-mid-frequency ripple voltage on the output.
Ripple can be reduced by making the output capacitor
large. The 33µ F unit specified results in ripple of 100mV to
200mV on the 12V output. A 100µ F capacitor will decrease
ripple to 50mV. If operating at 5V ouput a 0.1µF ceramic
capacitor is required at the Sense pin in addition to the
electrolytic.

If switch current reaches 1A, causing A2 to trip, switch on­time is reduced and off-time increases slightly. This allows
continuous mode operation during bursts. A2 monitors

decreases

OUT

SHDN

LT1301 TC

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 on­time portion of the oscillator cycle and increasing off-time
to about 2µs as shown in Figure 3, trace A. This pro-
grammed peak current can be reduced by tying the I

LIM

pin

to ground, causing 15µA to flow through R2 into Q3’s
collector. Q3’s current causes a 10.4mV drop in R2 so that
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 accom­panying reduction in full load current is acceptable. Lower
peak currents also extend alkaline battery life due to the
alkaline cell’s high internal impedance.

TRACE A

500mA/DIV

PIN

I

LIM

OPEN

TRACE B

500mA/DIV

PIN

I

LIM

GROUNDED

20µs/DIV

Figure 3. Switch Pin Current With I

Floating or Grounded

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5

LT1301

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APPLICATIONS INFORMATION

V

OUT

100mV/DIV

AC COUPLED

V

SW

10V/DIV

I

L

500mA/DIV

20µs/DIV

V

IN

C

OUT

= 5V, V

OUT

= 33µF, I

= 12V, L = 33µH

= 90mA

LOAD

Figure 4. Burst Mode Operation in Action

Output Voltage Selection

The LT1301 can be selected to 5V or 12V under logic
control or fixed at either by tying Select to ground or V
respectively. It is permissible to tie Select to a voltage
higher than VIN as 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
of 5V than 12V. Since the bipolar switch in the LT1301 gets
its base drive from VIN, no reduction in switch efficiency
occurs when in 5V mode. When VIN exceeds the pro­grammed 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.

Shutdown

The converter can be turned off by pulling SHDN (pin 3)
high. Quiescent current drops to 10µA in this condition.
Bias current of 8µ A to 10µ A flows into the pin (at 5V input).
It is recommended that SHDN not be left floating. Tie the
pin to ground if the feature is not used. SHDN can be driven
high even if VIN is floating.

I

Function

LIM

The LT1301’s current limit (I

) pin can be used for soft

LIM

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
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

LT1300 F4

OUT

and I

IN

IN

V

OUT

5V/DIV

I

IN

500mA/DIV

V

SHDN

10V/DIV

V

IN

= 5V, V

OUT

200µs/DIV

= 12V

LT1300 F5

Figure 5. Start-Up Response

D1

1N5817

R1
1M


C3

0.1µF


+

LT1301 F6

12V

C2
33µF


V

3.3V OR 5V

IN

+

47µF

SHUTDOWN

V

IN

SELECT

SHDN

GND

L1

33µH

LT1301

SW

SENSE

I

LIM

PGND

Figure 6.

V

OUT

5VDIV

I

IN

500mA/DIV

V

SHDN

10V/DIV

VIN = 5V, V

OUT

200µs/DIV

= 12V

LT1300 F5

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 15µ A flowing out of the I

pin charges up C3. Input

LIM

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 de­creasing peak switch current. When using the I

pin soft-

LIM

start mode a minimum load of a few hundred microam­peres is recommended to prevent C3 from discharging, as
no current flows out of I

when the LT1301 is not

LIM

6

LT1301

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APPLICATIONS INFORMATION

Table 1. Recommended Inductors

EFFICIENCY (%) COMPONENT

PART NUMBER VENDOR L (µH) DCR (Ω)VIN(V) I

DO3316-333 Coilcraft 33 0.088 3.3 Open 84 84 85 5.5 (708) 639–6400

5 Open 89 89 90

DO1608-223 Coilcraft 22 .31 3.3 Open 82 82 — 3.5

3.3 Ground 85 — —
5 10k 86 87 —
5 Ground 88 — —

DO1608-103 Coilcraft 10 .11 2 Open 78 — — 3.5
CTX20-1 Coiltronics 20 .175 3.3 Open 84 84 — 4.2 [phone]

5 Open 88 88 89

GA10-332 Gowanda 33 .077 3.3 Open 86 86 87 Through-Hole [phone]

5 Open 89 89 90

LQH3G220K04M00 Murata-Erie 22 0.7 3.3 Ground 81 — — 2.0 [phone]

5 Ground 85 — —

CD73-330KC Sumida 33 0.131 3.3 Open 84 85 86 3.5 [phone]

5 Open 88 88 89

CDRH62-330MC Sumida 33 0.48 3.3 Open 80 80 81 3.0

5 Open 84 84 85

PIN 30mA 60mA 120mA HEIGHT (mm) PHONE NUMBER

LIM

Ground 85 — —

Ground 83 — —

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.

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.

Inductor Selection

For full output power, the inductor should have a satura­tion 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 conjunc­tion with the I

pin. Efficiency is significantly affected by

LIM

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.

Table 2. Recommended Capacitors

VENDOR SERIES TYPE PHONE#

AVX TPS Surface Mount (803)448–9411
Sanyo OS-CON Through-Hole (619) 661–6835
Panasonic HFQ Through-Hole [phone]

1100

1.6V ≤ VIN ≤ 5V

1000

900

800

700

600

SWITCH CURRENT (mA)

500

400

300

100 10k 100k 1M

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

1k

CURRENT LIMIT SET RESISTOR (Ω)

LT1301 F8

7

LT1301

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APPLICATIONS INFORMATION

Capacitor Selection

Low ESR capacitors are required for both input and output
of the LT1301. ESR directly affects ripple voltage and
efficiency. For surface mount applications AVX TPS series
tantalum capacitors are recommended. These have been
specially designed for SMPS and have low ESR along with
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

pin, capacitor requirements can be relaxed and

LIM

smaller, higher ESR units can be used. Suggested capaci­tor sources are listed in Table 2.

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TYPICAL APPLICATIONS N

Diode Selection

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 VIN (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.

4 CELLS

2×
AA
CELL

Four-Cell to 5V Converter

C2

100µF

+

0.1µF


+

C1
100µF

SHUTDOWN

NC

V

IN

I

LIM

SHDN

GND

L1

33µH

LT1301

SW

SENSE

SELECT

PGND

Step-Up Converter with Automatic Output Disconnect

+

SHUTDOWN

100µF

NC

NC

SELECT
SHDN

I

LIM

GND

LT1301

V

SW

SENSE

PGND

L1*

10µH

IN



1N5817

L2
33µH

470Ω

+

1N5817

100µF

LT1301 TAO3

2N4403

5V OUTPUT
200mA
80 to 83% EFFICIENT

> 10mA

AT I

LOAD

+

C3
100µF


5V, 200mA

0.1µF

8

*SUMIDA CD54-100LC 
COILCRAFT DO3316-223

LT1301 TA4

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TYPICAL APPLICATIONS N

V

IN

1.8V TO 6V

LCD Contrast Supply

T1

4

7

1

3

10

8
2

9

1N5819

150K

CONTRAST 
V

–4V TO –29V 12mA

OUT

MAXIMUM FROM 1.8V SUPPLY 
(77% EFFICIENT)
20mA MAXIMUM FROM 
3V SUPPLY (83% EFFICIENT)

22µF
35V

+

LT1301

V

2V - 6V

V

IN

SENSE

NC

+

100µF

NC

T1 = DALE LPE-5047-AO45 [phone]

LT1301

SELECT

PGND

SW

SHDN

I

LIM

GND

SHUTDOWN

CMOS DRIVE 0V TO 5V

12K

12K

PWM IN

0% TO 100%

+

2.2µF

LT1300 TA5

Low-Voltage CCFL Power Supply

97



IN

1Ω

1N5817

1µF

L1

47µH

7.5K
1%

2N3904

0.1µF

NC

V

IN

SENSE

SHDN

GND

LT1301

SELECT

SW

I

LIM

PGND

+

15TI4

120Ω

1N4148

32

0.068µF

WIMA
MKP20

+

10µF

ZTX849ZTX849

22pF
3kV

CCFL

SHUTDOWN

T1 = COILTRONICS CTX110654-1
L1 = COILCRAFT D03316-473

0 - 5VDC IN

INTENSITY ADJUST

100µA TO 2mA BULB CURRENT

LT1300 TA6

9

LT1301

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TYPICAL APPLICATIONS N

5V

+

33µF

0.1µF

5V to –5V Converter

V

IN

SELECT

NC

SENSENC

GND

LT1301

LT1300

1N4148

OR

2

1

SW
SHDN

I

PGND

L1

33µH

LIM

3

4

SHUTDOWN

–V

5V

OUT

300mA

33µF

1N58171N965

4.99K
1%

+

4.99K
1%

L1 = COILTRONICS CTX33-4

5V

LT1301 TA7

10

PACKAGE DESCRIPTION

0.300 – 0.320

(7.620 – 8.128)

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Dimensions in inches (millimeters) unless otherwise noted.

N8 Package

8-Lead Plastic DIP

0.400

0.045 – 0.065

(1.143 – 1.651)

0.130 ± 0.005

(3.302 ± 0.127)

(10.160)

MAX

876

LT1301

5

0.008 – 0.010

(0.203 – 0.254)

0.065

(1.651)

0.009 – 0.015

(0.229 – 0.381)

+0.025

0.325

–0.015

+0.635

8.255

()

–0.381

TYP

0.045 ± 0.015

(1.143 ± 0.381)

0.100 ± 0.010

(2.540 ± 0.254)

8-Lead Plastic S0IC

0.010 – 0.020

(0.254 – 0.508)

× 45°

0°– 8° TYP

0.016 – 0.050

0.406 – 1.270

*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).

0.053 – 0.069

(1.346 – 1.752)

0.014 – 0.019

(0.355 – 0.483)

0.018 ± 0.003

(0.457 ± 0.076)

S8 Package

0.050

(1.270)

BSC

0.125

(3.175)

MIN



0.004 – 0.010

(0.101 – 0.254)

0.020

(0.508)

MIN

0.228 – 0.244

(5.791 – 6.197)

1234

0.189 – 0.197*
(4.801 – 5.004)

7

8

1

6

3

2

0.250 ± 0.010

(6.350 ± 0.254)

5

0.150 – 0.
(3.810 – 3.

4





N8 0392

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 represen­tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

11

LT1301

U.S. Area Sales Offices

NORTHEAST REGION
Linear Technology Corporation

One Oxford Valley
2300 E. Lincoln Hwy.,Suite 306
Langhorne, PA 19047
Phone: [phone]
FAX: [phone]

Linear Technology Corporation

266 Lowell St., Suite B-8
Wilmington, MA 01887
Phone: [phone]
FAX: [phone]

FRANCE
Linear Technology S.A.R.L.

Immeuble "Le Quartz"
58 Chemin de la Justice
92290 Chatenay Malabry
France
Phone: [phone]
FAX: [phone]

SOUTHEAST REGION
Linear Technology Corporation

17060 Dallas Parkway
Suite 208
Dallas, TX 75248
Phone: [phone]
FAX: [phone]

CENTRAL REGION
Linear Technology Corporation

Chesapeake Square
229 Mitchell Court, Suite A-25
Addison, IL 60101
Phone: [phone]
FAX: [phone]

International Sales Offices

KOREA
Linear Technology Korea Branch

Namsong Building, #505
Itaewon-Dong 260-199
Yongsan-Ku, Seoul
Korea
Phone: [phone]
FAX: [phone]

SOUTHWEST REGION
Linear Technology Corporation

22141 Ventura Blvd.
Suite 206
Woodland Hills, CA 91364
Phone: [phone]
FAX: [phone]

NORTHWEST REGION
Linear Technology Corporation

782 Sycamore Dr.
Milpitas, CA 95035
Phone: [phone]
FAX: [phone]

TAIWAN
Linear Technology Corporation

Rm. 801, No. 46, Sec. 2
Chung Shan N. Rd.
Taipei, Taiwan, R.O.C.
Phone: [phone]
FAX: [phone]

GERMANY
Linear Techonolgy GmbH

Untere Hauptstr. 9
D-85386 Eching
Germany
Phone: [phone]
FAX: [phone]

JAPAN
Linear Technology KK

5F YZ Bldg.
4-4-12 Iidabashi, Chiyoda-Ku
Tokyo, 102 Japan
Phone: [phone]
FAX: [phone]

SINGAPORE
Linear Technology Pte. Ltd.

101 Boon Keng Road
#02-15 Kallang Ind. Estates
Singapore 1233
Phone: [phone]
FAX: [phone]

World Headquarters

Linear Technology Corporation

1630 McCarthy Blvd.
Milpitas, CA 95035-7487
Phone: [phone]
FAX: [phone]

UNITED KINGDOM
Linear Technology (UK) Ltd.

The Coliseum, Riverside Way
Camberley, Surrey GU15 3YL
United Kingdom
Phone: [phone]
FAX: [phone]

08/16/93

12

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7487

[phone]

●

FAX

: [phone]

●

TELEX

: 499-3977

LT/GP 0394 10K • PRINTED IN USA

 LINEAR TECHNOLOGY CORPORATION 1994