ISL9021 datasheet(3/10 Pages) RENESAS

3 / 10 page

ISL9021

FN6867 Rev 2.00

Page 3 of 10

January 14, 2010

Absolute Maximum Ratings

Thermal Information

Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6.5V

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

Recommended Operating Conditions

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

Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 to 5.5V

Thermal Resistance (Typical, Note 5)

JA (°C/W)

4 Ball WLCSP . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

135.64

6 Lead µTDFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

140

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.

NOTE:

JA 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

TA = -40°C to +85°C; VIN = (VO + 0.5V) to 5.5V with a minimum VIN of 1.5V; CIN = 1µF; CO = 1µF; Parameters

with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits

established by characterization and are not production tested.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DC CHARACTERISTICS

Supply Voltage

VIN

1.5

5.5

VIN Undervoltage Lockout

Threshold

VUVLO+ VIN Rising

1.425

1.5

VUVLO- VIN Falling

1.3

1.375

Ground Current

IDD

Output Enabled; IO = 0; VIN = 1.5V to 5.5V

µA

Shutdown Current

IDDS

VIN = 5.5V, EN = Low, IO = 0

0.1

1.0

µA

Output Voltage Accuracy

VIN = VO + 0.5V to 5.5V, IO = 1mA to 150mA, TJ = +25°C

-0.8

+0.8

VIN = VO + 0.5V to 5.5V, IO = 1mA to 150mA, TJ = -40°C to +125°C -1.8

+1.8

Maximum Output Current

IMAX

Continuous

250

Internal Current Limit

ILIM

260

Dropout Voltage (Notes 6, 7)

VDO

IO = 250mA; VO > 1.8V

150

250

Thermal Shutdown Temperature

TSD

160

°C

Thermal Shutdown Hysteresis

°C

AC CHARACTERISTICS

Ripple Rejection (Note 6)

VIN = 4.5V, VO = 3.3V @ 1kHz

VIN = 4.5V, VO = 3.3V @ 10kHz

VIN = 4.5V, VO = 3.3V @ 1MHz

Output Noise Voltage (Note 6)

VIN = 4.2V, TA = +25°C, BW = 10Hz to 100kHz, IO = 10mA

8.5*VO

µVRMS

DEVICE START-UP CHARACTERISTICS

Device Enable Time

tEN

Time from assertion of the EN pin to when the output voltage

reaches 95% of the VO (nom)

250

600

µs

LDO Soft-start Ramp Rate

tSSR

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

µs/V

EN LOGIC CHARACTERISTICS

Input Low Voltage

VIL

0.4

Input High Voltage

VIH

1.1

Input Leakage Current

IIL, IIH

0.1

µA

NOTES:

6. Limits established by characterization and are not production tested.

7. Dropout voltage is measured as VIN - VO, when VO is 4% lower than the value of VO; when VIN = VO + 0.5V.

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