LTC3290

3

Rev. 0

For more information www.analog.com

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LTC3290 is tested under pulsed load conditions such

0°C to 85°C junction temperature. Specifications over the –40°C to

125°C operating junction temperature range are assured by design,

characterization and correlation with statistical process controls. The

LTC3290I is guaranteed over the –40°C to 125°C operating junction

temperature range, the LTC3290H is guaranteed over the –40°C to 150°C

operating junction temperature range and the LTC3290MP is guaranteed

over the –55°C to 150°C operating junction temperature range. Note that

the maximum ambient temperature consistent with these specifications

is determined by specific operating conditions in conjunction with board

layout, the rated package thermal impedance and other environmental

factors.

the formula:

Note 3: This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperatures will exceed 150°C when overtemperature protection is

active. Continuous operation above the specified maximum operating

junction temperature may result in device degradation or failure.

Note 4: This IC includes overvoltage protection that is intended to protect

the device during momentary overload conditions. Pin voltages will

exceed ABSMAX voltage ratings of the part while the protection is active.

Continuous operation above the ABSMAX voltage ratings may result in

device degradation or failure.

Note 5: Current limit is a protection feature. Refer to Available Output

Current section in Applications Information for additional information.

During a short-circuit event, the current limit is folded back further to

reduce power dissipation.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Boost Charge Pump

Input Supply Voltage Range

l

4.5

55

V

Auxiliary Supply Voltage Range

l

4.5

55

V

Sum of Input Supply Voltages

l

9

55

V

Hysteresis

(Note 4)

63

65

4

67

V

V

Output Overvoltage Rising Threshold

Hysteresis

(Note 4)

63

65

4

67

V

V

Shutdown, EN = 0V

3

15

5

30

µA

µA

Shutdown, EN = 0V

1

1

3

3

µA

µA

FB Regulation Voltage

l

0.98

1

1.02

V

Effective Open Loop Output Resistance

65

Ω

l

100

150

200

mA

Enable Pin Threshold Rising

l

1.1

2

V

Enable Pin Threshold Falling

l

0.4

1

V

l

1.1

2

V

l

0.4

1

V

Enable Pin Leakage Current

–1

0

1

µA

PGOOD Pin Threshold Rising in Boost

95

98

%

PGOOD Pin Threshold Falling in Boost

88

91

%

–1.5

V

–1.6

V

PGOOD Output High Leakage Current

l

–1

1

µA

PGOOD Output Low Voltage

l

0.1

0.4

V