3

LT1614

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

295

350

mV

400

mV

Shutdown Pin Current

10

20

µA

– 5

– 10

µA

LBI Threshold Voltage

190

200

210

mV

q

185

215

mV

LBO Output Low

0.1

0.25

V

LBO Leakage Current

0.01

0.1

µA

LBI Input Bias Current (Note 5)

10

50

nA

Low-Battery Detector Gain

1M

Ω Load

1000

V/V

Switch Leakage Current

0.01

3

µA

ELECTRICAL C

C

HARA TERISTICS

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

of a device may be impaired.

Note 2: The LT1614C is guaranteed to meet specified performance from

0

°C to 70°C and is designed, characterized and expected to meet these

extended temperature limits, but is not tested at – 40

°C and 85°C. The

LT1614I is guaranteed to meet the extended temperature limits.

Industrial Grade – 40

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Quiescent Current

12

mA

5

10

µA

Feedback Voltage

q

– 1.21

– 1.24

– 1.27

V

NFB Pin Bias Current (Note 3)

q

– 2

– 4.5

– 7.5

µA

Reference Line Regulation

1V

0.6

1.1

%/V

2V

0.3

0.8

%/V

Minimum Input Voltage

– 40

°C

1.1

1.25

V

85

°C

0.8

1.0

V

Maximum Input Voltage

q

6V

Error Amp Transconductance

∆I = 5µA16

µmhos

Error Amp Voltage Gain

100

V/V

Switching Frequency

q

500

600

750

kHz

Maximum Duty Cycle

q

70

80

%

Switch Current Limit (Note 4)

0.75

1.2

A

250

350

mV

330

400

mV

Shutdown Pin Current

10

20

µA

– 5

– 10

µA

LBI Threshold Voltage

q

180

200

220

mV

LBO Output Low

0.1

0.25

V

LBO Leakage Current

0.1

0.3

µA

LBI Input Bias Current (Note 5)

5

30

nA

Low-Battery Detector Gain

1M

Ω Load

1000

V/V

Switch Leakage Current

0.01

3

µA

Note 3: Bias current flows out of NFB pin.

Note 4: Switch current limit guaranteed by design and/or correlation to

static tests. Duty cycle affects current limit due to ramp generator.

Note 5: Bias current flows out of LBI pin.

otherwise noted.