LT1305CS8 datasheet(2/8 Pages) LINER

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LT1305

BSOLUTEXI

PACKAGE/ORDER I FOR ATIO

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

SW1 Voltage ............................................................ 25V

FB Voltage ............................................................... 10V

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

LBO Voltage ............................................................. 10V

LBI Voltage .............................................................. 10V

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

Operating Temperature Range ..................... 0

°C to 70°C

Storage Temperature Range ................. – 65

°C to 150°C

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

°C

ORDER PART

NUMBER

Consult factory for Industrial and Military grade parts.

S8 PART MARKING

1305

LT1305CS8

TJMAX = 100°C, θJA = 80°C/ W

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Quiescent Current

VSHDN = 0.5V, VFB = 2V

120

200

µA

VSHDN = 1.8V

715

µA

VIN

Input Voltage Range

1.8

1.55

2.0

Feedback Voltage

1.22

1.24

1.26

Comparator Hysteresis

12.5

Feedback Pin Bias Current

VFB = 1V

720

Oscillator Frequency

Current Limit Not Asserted

120

155

185

kHz

Oscillator TC

0.2

°C

Maximum Duty Cycle

tON

Switch On Time

Current Limit Not Asserted

5.6

µs

Output Line Regulation

1.8V < VIN < 6V

0.06

0.15

%/V

VCESAT

Switch Saturation Voltage

ISW = 1A

140

280

Switch Leakage Current

VSW = 5V, Switch Off

0.1

µA

Peak Switch Current

VIN = 2V

1.35

2.35

1.20

2.50

VIN = 5V

1.15

2.15

LBI Trip Voltage

(Note 2)

1.21

1.24

1.27

LBI Input Bias Current

VLBI = 1V

720

LBO Output Low

ILOAD = 100µA

0.11

0.4

LBO Leakage Current

VLBI = 1.3V, VLBO = 5V

0.1

µA

VSHDNH

Shutdown Pin High

1.8

VSHDNL

Shutdown Pin Low

0.5

ISHDN

Shutdown Pin Bias Current

VSHDN = 5V

8.0

µA

VSHDN = 2V

3.0

µA

VSHDN = 0V

0.1

µA

TA = 25°C, VIN = 2.0V, unless otherwise noted.

ELECTRICAL C

HARA TERISTICS

The q denotes specifications which apply over the 0

°C to 70°C operating

temperature range.

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

capacitance is insufficient or capacitor ESR is excessive.

Note 2: Low-battery detector comparator is inoperative when device is in

shutdown.

TOP VIEW

PGND

VIN

LBI

GND

LBO

SHDN

S8 PACKAGE

8-LEAD PLASTIC SO

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