LTC3401 Просмотр технического описания (PDF) - Linear Technology

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LTC3401

1A, 3MHz Micropower Synchronous Boost Converter

Linear Technology 

LTC3401

ABSOLUTE AXI U RATI GS

(Note 1)

VIN, VOUT Voltages ...................................... – 0.5V to 6V

SW Voltage ................................................. – 0.5V to 6V

VC, Rt Voltages ......................... – 0.5V to (VOUT + 0.3V)

PGOOD, SHDN, FB, MODE Voltages ........... – 0.5V to 6V

Operating Temperature Range (Note 2) .. – 40°C to 85°C

Storage Temperature Range ................. – 65°C to 125°C

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

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

UW U

PACKAGE/ORDER I FOR ATIO

Rt 1

MODE 2

VIN 3

SW 4

GND 5

TOP VIEW

10 SHDN

9 VC

8 FB

7 VOUT

6 PGOOD

MS PACKAGE

10-LEAD PLASTIC MSOP

TJMAX = 125°C

θJA = 130°C/ W 1 LAYER BOARD

θJA = 100°C/ W 4 LAYER BOARD

ORDER PART

NUMBER

LTC3401EMS

MS PART MARKING

LTPG

Consult LTC Marketing for parts specified with wider operating temperature ranges.

ELECTRICAL CHARACTERISTICS

The ● denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25°C.

VIN = 1.2V, VOUT = 3.3V unless otherwise noted.

PARAMETER

CONDITIONS

MIN TYP MAX

Minimum Start-Up Voltage

Minimum Operating Voltage

ILOAD < 1mA

(Note 4)

0.85

1.0

●

0.5

Output Voltage Adjust Range

● 2.6

5.5

Feedback Voltage

● 1.22 1.25 1.28

Feedback Input Current

Quiescent Current—Burst Mode Operation

Quiescent Current—SHDN

VFB = 1.25V

VC = 0V, MODE/SYNC = 3.3V (Note 3)

SHDN = 0V, Not Including Switch Leakage

1

50

38

65

0.1

1

Quiescent Current—Active

NMOS Switch Leakage

VC = 0V, MODE/SYNC = 0V, Rt = 300k (Note 3)

440 800

0.1

5

PMOS Switch Leakage

0.1

10

NMOS Switch On Resistance

0.16

PMOS Switch On Resistance

0.18

NMOS Current Limit

●1

1.6

NMOS Burst Current Limit

0.66

Maximum Duty Cycle

Minimum Duty Cycle

Rt = 15k

● 80

85

●

0

Frequency Accuracy

MODE/SYNC Input High

Rt = 15k

● 1.6

2

2.4

1.4

MODE/SYNC Input Low

0.4

MODE/SYNC Input Current

Error Amp Transconductance

PGOOD Threshold

VMODE/SYNC = 5.5V

ΔI = – 5μA to 5μA, VC = VFB

Referenced to Feedback Voltage

0.01

1

85

–6

–9

– 12

UNITS

V

V

V

V

nA

μA

μA

μA

μA

μA

Ω

Ω

A

A

%

%

MHz

V

V

μA

μmhos

%

3401fb

2

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