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LT1610

1.7MHz, Single Cell Micropower DC/DC Converter

Linear Technology 

LT1610

ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the specified temperature

range, otherwise specifications are at TA = 25°C. Commercial grade 0°C to 70°C, VIN = 1.5V, VSHDN = VIN, unless otherwise noted.

(Note 2)

PARAMETER

Switch Current Limit

Switch VCESAT

Switch Leakage Current

SHDN Input Voltage High

SHDN Input Voltage Low

SHDN Pin Bias Current

CONDITIONS

(Note 3)

ISW = 300mA

VSW = 5V

VSHDN = 3V

VSHDN = 0V

MIN TYP MAX

450

600

900

300

350

q

400

0.01

1

1

0.3

10

0.01 0.1

UNITS

mA

mV

mV

µA

V

V

µA

µA

The q denotes specifications which apply over the specified temperature range, otherwise specifications are at TA = 25°C.

Industrial grade – 40°C to 85°C, VIN = 1.5V, VSHDN = VIN, unless otherwise noted.

PARAMETER

Minimum Operating Voltage

Maximum Operating Voltage

Feedback Voltage

Quiescent Current

Quiescent Current in Shutdown

FB Pin Bias Current

Reference Line Regulation

Error Amp Transconductance

Error Amp Voltage Gain

Switching Frequency

Maximum Duty Cycle

Switch Current Limit

Switch VCESAT

Switch Leakage Current

SHDN Input Voltage High

SHDN Input Voltage Low

SHDN Pin Bias Current

CONDITIONS

TA = 85°C

TA = – 40°C

VSHDN = 0V, VIN = 2V

VSHDN = 0V, VIN = 5V

2V ≤ VIN ≤ 8V (– 40°C)

2V ≤ VIN ≤ 8V (85°C)

∆I = 2µA

(Note 4)

(Note 4)

ISW = 300mA

VSW = 5V

VSHDN = 3V

VSHDN = 0V

MIN

q 1.20

q

q 1.4

77

q 75

450

q

1

TYP MAX

0.9

1

1.25

8

1.23 1.26

30

60

0.01 0.5

0.01 1.0

27

80

0.03 0.15

0.2

25

100

1.7

2

80

95

95

600

900

300

350

400

0.01

1

0.3

10

0.01 0.1

UNITS

V

V

V

V

µA

µA

µA

nA

%/V

%/V

µmhos

V/V

MHz

%

%

mA

mV

mV

µA

V

V

µA

µA

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

of a device may be impaired.

Note 2: The LT1610C 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

LT1610I is guaranteed to meet the extended temperature limits.

Note 3: Current limit guaranteed by design and/or correlation to static test.

Current limit is affected by duty cycle due to ramp generator. See Block

Diagram.

Note 4: Not 100% tested at 85°C.

3

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