LT3030HFE-PBF 데이터 시트보기 (PDF) - Linear Technology

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LT3030HFE-PBF

Dual 750mA/250mA Low Dropout, Low Noise, Micropower Linear Regulator

Linear Technology 

LT3030

Electrical Characteristics The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C (Note 2).

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

Ripple Rejection

Current Limit (Note 9)

Input Reverse Leakage Current

Reverse Output Current

VIN = 2.72V (Avg), VRIPPLE = 0.5VP-P,

fRIPPLE = 120Hz, ILOAD = Full Current (Note 13)

VIN = VOUT(NOMINAL) + 1V, VRIPPLE = 50mVRMS

fRIPPLE = 1MHz, ILOAD = Full Current (Note 13)

Output 1, VIN1 = 6V, VOUT1 = 0V

VIN1 = 2.2V, ∆VOUT1 = –0.1V

Output 2, VIN2 = 6V, VOUT2 = 0V

VIN2 = 2.2V, ∆VOUT2 = –0.1V

VIN = –20V, VOUT = 0V

VOUT = 1.220V, VIN = 0V

50

60

dB

50

dB

l 1.1

1.4

1.7

A

l 800

mA

l 350

420

490

mA

l 270

mA

l

1

mA

0.5

10

μA

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 LT3030 is tested and specified under pulse load conditions

such that TJ ≈ TA. The LT3030E is 100% tested at TA = 25°C and

performance is guaranteed from 0°C to 125°C. Performance of the

LT3030E over the full –40°C to 125°C operating junction temperature

range is assured by design, characterization and correlation with statistical

process controls. The LT3030I is guaranteed over the full –40°C to 125°C

operating junction temperature range. The LT3030MP is 100% tested and

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

The LT3030H is tested at 150°C operating junction temperature. High

junction temperatures degrade operating lifetimes. Operating lifetime is

derated at junction temperatures greater than 125°C.

Note 3: The LT3030 is tested and specified for these conditions with the

ADJ1/ADJ2 pin connected to the corresponding OUT1/OUT2 pin.

Note 4: Maximum junction temperature limits operating conditions. The

regulated output voltage specification does not apply for all possible

combinations of input voltage and output current. When operating at

maximum input voltage, limit the output current range. When operating at

maximum output current, limit the input voltage range.

Note 5: To satisfy minimum input voltage requirements, the LT3030 is

tested and specified for these conditions with an external resistor divider

(two 243k resistors) for an output voltage of 2.447V. The external resistor

divider adds 5μA of DC load on the output.

Note 6: Dropout voltage is the minimum input to output voltage differential

needed to maintain regulation at a specified output current. In dropout, the

output voltage equals: VIN – VDROPOUT.

Note 7: GND pin current is tested with VIN = 2.447V and a current source

load. This means the device is tested while operating in its dropout region

or at the minimum input voltage specification. This is the worst-case

GND pin current. The GND pin current decreases slightly at higher input

voltages. Total GND pin current equals the sum of output 1 and output 2

GND pin currents.

Note 8: ADJ1/ADJ2 pin bias current flows into the pin.

Note 9: The LT3030 contains current limit foldback circuitry. See the

Typical Performance Characteristics section for current limit as a function

of the VIN – VOUT differential voltage.

Note 10: SHDN1 and SHDN2 pin current flows into the pin.

Note 11: The LT3030 minimum input voltage specification limits dropout

voltage under some output voltage/load conditions. See the curve of

Minimum Input Voltage in the Typical Performance Characteristics section.

Note 12: The LT3030 includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperature exceeds the maximum operating junction temperature when

overtemperature protection is active. Continuous operation above the

specified maximum operating junction temperature may impair device

reliability.

Note 13: The Full Current for ILOAD is 750mA and 250mA for Output 1 and

Output 2 respectively.

3030fa

4

For more information www.linear.com/LT3030

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