2

LT1301

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

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

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

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

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

Operating Temperature Range

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

S8 PART MARKING

1301

1301I

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Quiescent Current

q

120

200

µA

q

715

µA

Input Voltage Range

1.8

V

q

2.0

V

Output Sense Voltage

q

11.52

12.00

12.48

V

q

4.75

5.00

5.25

V

Output Referred

q

50

100

mV

Comparator Hysteresis

q

22

50

mV

Oscillator Frequency

Current Limit not Asserted.

120

155

185

kHz

Oscillator TC

0.2

%/

°C

DC

Maximum Duty Cycle

75

86

95

%

Switch On-Time

Current Limit not Asserted.

5.6

µs

Output Line Regulation

q

0.06

0.15

%/V

Switch Saturation Voltage

q

130

200

mV

Switch Leakage Current

q

0.1

10

µA

Peak Switch Current

0.75

1.0

1.25

A

(Internal Trip Point)

0.4

A

Shutdown Pin High

q

1.8

V

Shutdown Pin Low

0.5

V

Select Pin High

q

1.5

V

Select Pin Low

q

0.8

V

Shutdown Pin Bias Current

q

820

µA

q

3

µA

q

0.1

1

µA

Select Pin Bias Current

q

13

µA

°C to 70°C

temperature range.

ORDER PART

NUMBER

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

output capacitance is insufficient or capacitor ESR is excessive.

See operation section.

LT1301CN8

LT1301CS8

LT1301IS8

1

2

3

4

8

7

6

5

TOP VIEW

GND

SEL

SHDN

SENSE

PGND

SW

N8 PACKAGE

8-LEAD PLASTIC DIP

S8 PACKAGE

8-LEAD PLASTIC SOIC