ISL9008A 查看數據表（PDF） - Intersil

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ISL9008A

Low Noise LDO with Low IQ, High PSRR

Intersil 

ISL9008A

Absolute Maximum Ratings

Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7.1V

VO Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3.6V

All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VIN+0.3V)

Recommended Operating Conditions

Ambient Temperature Range (TA) . . . . . . . . . . . . . . .-40°C to +85°C

Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3 to 6.5V

Thermal Information

Thermal Resistance

θJA (°C/W)

5 Ld SC-70 Package (Note 5) . . . . . . . . . . . . . . . . .

231

6 Ld µTDFN Package (Note 6) . . . . . . . . . . . . . . . .

125

Junction Temperature Range . . . . . . . . . . . . . . . . .-40°C to +125°C

Operating Temperature Range . . . . . . . . . . . . . . . . .-40°C to +85°C

Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C

Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and

result in failures not covered by warranty.

NOTES:

5. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.

6. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See

Tech Brief TB379.

Electrical Specifications

Unless otherwise noted, all parameters are established over the operational supply voltage and temperature

range of the device as follows:

TA = -40°C to +85°C; VIN = (VO + 0.5V) to 6.5V with a minimum VIN of 2.3V; CIN = 1µF; CO = 1µF.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

MAX

(Note 9) TYP (Note 9) UNITS

DC CHARACTERISTICS

Supply Voltage

VIN

2.3

6.5

V

Ground Current

IDD Quiescent condition: IO = 0µA

46

66

µA

Shutdown Current

IDDS

0.5

1.2

µA

UVLO Threshold

VUV+

1.9 2.1

2.3

V

VUV-

1.6 1.8

2.0

V

Regulation Voltage Accuracy

Initial accuracy at VIN = VO + 0.5V, IO = 10mA, TJ = +25°C

-0.7

+0.7

%

VIN = VO + 0.5V to 6.5V, IO = 10μA to150mA, TJ = +25°C

-0.8

+0.8

%

VIN = VO + 0.5V to 6.5V, IO = 10μA to 150mA, TJ = -40°C to +125°C -1.8

+1.8

%

Maximum Output Current

IMAX Continuous

150

mA

Internal Current Limit

ILIM

175 265 355

mA

Drop-out Voltage (Note 8)

VDO1 IO = 150mA; VO < 2.5V

300 500

mV

VDO2 IO = 150mA; 2.5V ≤ VO ≤ 2.8V

250 400

mV

VDO3 IO = 150mA; 2.8V < VO

200 325

mV

Thermal Shutdown

Temperature

TSD+

TSD-

140

°C

110

°C

AC CHARACTERISTICS

Ripple Rejection (Note 7)

IO = 10mA, VIN = 2.8V(min), VO = 1.8V

@ 1kHz

65

dB

@ 10kHz

45

dB

@ 100kHz

35

dB

Output Noise Voltage (Note 7)

DEVICE START-UP CHARACTERISTICS

VO = 1.5V, TA = +25°C

BW = 10Hz to 100kHz, IO = 100µA

BW = 10Hz to 100kHz, IO = 10mA

45

µVRMS

65

µVRMS

Device Enable Time

tEN Time from assertion of the ENx pin to when the output voltage

reaches 95% of the VO(nom)

250 500

µs

LDO Soft-start Ramp Rate

tSSR Slope of linear portion of LDO output voltage ramp during start-up

30

60

µs/V

3

FN6300.4

March 11, 2008

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