LTC3405A-1.375 datasheet(2/12 Pages) LINER

2 / 12 page

LTC3405A-1.375

3405a1375f

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IPK

Peak Inductor Current

VIN = 3V, VOUT = 1.238V, Duty Cycle < 35%

375

500

625

VOUT

Regulated Output Voltage

MODE = 3.6V

●

1.334

1.375

1.416

∆VOVL

∆Output Overvoltage Lockout

∆VOVL = VOVL – VOUT

5.6

9.3

∆VOUT

Output Voltage Line Regulation

VIN = 2.5V to 5.5V

●

0.04

0.4

%/V

VLOADREG

Output Voltage Load Regulation

0.5

VIN

Input Voltage Range

●

2.5

5.5

Input DC Bias Current

(Note 4)

Pulse Skipping Mode

VOUT = 1.238V, MODE = 3.6V, ILOAD = 0A

300

400

µA

Burst Mode

® Operation

VOUT = 1.42V, MODE = 0V, ILOAD = 0A

µA

Shutdown

VRUN = 0V, VIN = 4.2V

0.1

µA

fOSC

Oscillator Frequency

VOUT = 1.375V

●

1.2

1.5

1.8

MHz

VOUT = 0V

170

kHz

RPFET

RDS(ON) of P-Channel FET

ISW = 100mA

0.7

0.85

Ω

RNFET

RDS(ON) of N-Channel FET

ISW = –100mA

0.6

0.90

Ω

ILSW

SW Leakage

VRUN = 0V, VSW = 0V or 5V, VIN = 5V

±0.01

±1

µA

VRUN

RUN Threshold

●

0.3

1.5

IRUN

RUN Leakage Current

●

±0.01

±1

µA

VMODE

MODE Threshold

●

0.3

1.5

IMODE

MODE Leakage Current

●

±0.01

±1

µA

LTC3405AES6-1.375

TJMAX = 125°C, θJA = 250°C/ W

ORDER PART

NUMBER

(Note 1)

Input Supply Voltage .................................. – 0.3V to 6V

MODE, RUN, VOUT Voltages....................... – 0.3V to VIN

SW Voltage .................................. – 0.3V to (VIN + 0.3V)

P-Channel Switch Source Current (DC) ............. 400mA

N-Channel Switch Sink Current (DC) ................. 400mA

Peak SW Sink and Source Current .................... 630mA

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

Junction Temperature (Note 3) ............................ 125°C

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

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

S6 PART MARKING

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

The

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

VIN = 3.6V unless otherwise specified.

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

ELECTRICAL CHARACTERISTICS

RUN 1

GND 2

SW 3

6 MODE

5 VOUT

4 VIN

TOP VIEW

S6 PACKAGE

6-LEAD PLASTIC TSOT-23

Burst Mode is a registered trademark of Linear Technology Corporation.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LTC3405A-1.375 is guaranteed to meet performance

specifications from 0°C to 70°C. Specifications over the –40°C to 85°C

operating temperature range are assured by design, characterization and

correlation with statistical process controls.

Note 3: TJ is calculated from the ambient temperature TA and power

dissipation PD according to the following formula:

LTC3405A-1.375: TJ = TA + (PD)(250°C/W)

Note 4: Dynamic supply current is higher due to the gate charge being

delivered at the switching frequency.

LTBRP

LTC3405A-1.375 Scheda tecnica(PDF) 2 Page - Linear Technology

LTC3405A-1.375 Scheda tecnica(HTML) 2 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12

Scheda tecnica Scarica

Link URL