intersil ISL9005 DATA SHEET

ISL9005

Datasheet May 5, 2008

LDO with Low I

SUPPLY

ISL9005 is a high performance Low Dropout linear regulator capable of sourcing 300mA current. It has a low standby current and high-PSRR and is stable with output capacitance of 1µF to 10µF with ESR of up to 200mΩ.

The ISL9005 has a high PSRR of 75dB and output noise less than 45µV

. When coupled with a no load quiescent

RMS

current of 50µA (typical), and 0.1µA shutdown current, the ISL9005 is an ideal choice for portable wireless equipment.

Several different fixed voltage outputs are standard. Output voltage options for each LDO range are from 1.5V to 3.3V. Other output voltage options may be available upon request.

, High PSRR

Pinout

ISL9005

(8 LD 2x3 DFN)

TOP VIEW

VIN

EN NC NC

1 2 3 4

8 7

GND

FN9234.2

Features

• 300mA high performance LDO

• Excellent transient response to large current steps

• Excellent load regulation: <0.1% voltage change across full range of load current

• High PSRR: 75dB @ 1kHz

• Wide input voltage capability: 2.3V to 6.5V

• Very low quiescent current: 50µA

• Low dropout voltage: typically 200mV @ 300mA

• Low output noise: typically 45µV

@ 100µA (1.5V)

RMS

• Stable with 1µF to 10µF ceramic capacitors

• Soft-start to limit input current surge during enable

• Current limit and overheat protection

• ±1.8% accuracy over all operating conditions

• Tiny 2mmx3mm 8 Ld DFN package

• -40°C to +85°C operating temperature range

• Pb-free (RoHS compliant)

Applications

• PDAs, cell phones and smart phones

• Portable instruments, MP3 players

• Handheld devices including medical handhelds

Ordering Information

PACKAGE

PART NUMBER

(Notes 1, 2) PART MARKING

ISL9005IRNZ-T ETA 3.3V -40 to +85 8 Ld 2x3 DFN L8.2x3 ISL9005IRMZ-T ESA 3.0V -40 to +85 8 Ld 2x3 DFN L8.2x3 ISL9005IRLZ-T ERA 2.9V -40 to +85 8 Ld 2x3 DFN L8.2x3 ISL9005IRKZ-T EPA 2.85V -40 to +85 8 Ld 2x3 DFN L8.2x3 ISL9005IRJZ-T ENA 2.8V -40 to +85 8 Ld 2x3 DFN L8.2x3 ISL9005IRRZ-T EVA 2.6V -40 to +85 8 Ld 2x3 DFN L8.2x3 ISL9005IRFZ-T EMA 2.5V -40 to +85 8 Ld 2x3 DFN L8.2x3 ISL9005IRCZ-T ELA 1.8V -40 to +85 8 Ld 2x3 DFN L8.2x3 ISL9005IRBZ-T EKA 1.5V -40 to +85 8 Ld 2x3 DFN L8.2x3

NOTES:

1. These Intersil Pb-free plastic p ackaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

2. Please refer to TB347 for details on reel specifications.

3. For other output voltages, contact Intersil Marketing.

VO VOLTAGE

(V) (Note 3) TEMP RANGE (°C)

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

| Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

Tape and Reel

(Pb-Free) PKG. DWG. #

ISL9005

Absolute Maximum Ratings Thermal Information

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

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

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) . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3V to 6.5V

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:

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

4. θ

Tech Brief TB379.

5. For θ

, the “case temp” location is the center of the exposed metal pad on the package underside.

Electrical Specifications Unless otherwise noted, all parameters are guaranteed over the operational supply voltage and temperature

range of the device as follows: T C

=1µF; CO = 1µF.

PARAMETER SYMBOL TEST CONDITIONS

DC CHARACTERISTICS

Supply Voltage V

Ground Current Quiescent condition: I

LDO active 50 75 µA

Shutdown Current I UVLO Threshold V

LDO disabled @ +25°C 0.1 1.0 µA

DDS

UV+

UV-

Regulation Voltage Accuracy Initial accuracy at VIN = VO + 0.5V, IO = 10mA, TJ = +25°C -0.7 +0.7 %

= VO + 0.5V to 5.5V, IO = 10µA to 300mA, TJ = +25°C -0.8 +0.8 %

= VO + 0.5V to 5.5V, IO = 10µA to 300mA, TJ = -40°C to

+125°C Maximum Output Current I Internal Current Limit I Dropout Voltage (Note 7) V

V V

Thermal Shutdown Temperature T

Continuous 300 mA

MAX

LIM DO1IO DO2IO DO3IO SD+

SD-

= 300mA; VO < 2.5V 300 500 mV = 300mA; 2.5V ≤ VO ≤ 2.8V 250 400 mV = 300mA; VO > 2.8V 200 325 mV

AC CHARACTERISTICS

Ripple Rejection (Note 6) I

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

@ 1kHz 75 dB

@ 10kHz 60 dB

@ 100kHz 40 dB Output Noise Voltage (Note 6) I

= 100µA, VO = 1.5V, TA = +25°C

BW = 10Hz to 100kHz

Thermal Resistance (Notes 4, 5) θ

(°C/W) θJC (°C/W)

8 Ld 2x3 DFN Package . . . . . . . . . . . . 69 10

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

= -40°C to +85°C; V

= (VO + 0.5V) to 5.5V with a minimum VIN of 2.3V;

MIN

(Note 8) TYP

(Note 8) UNITS

2.3 6.5 V

= 0µA

1.9 2.1 2.3 V

1.6 1.8 2.0 V

-1.8 +1.8 %

350 475 600 mA

145 °C 110 °C

45 µV

MAX

RMS

FN9234.2

May 5, 2008

ISL9005

Electrical Specifications Unless otherwise noted, all parameters are guaranteed over the operational supply voltage and temperature

range of the device as follows: T C

=1µF; CO = 1µF. (Continued)

PARAMETER SYMBOL TEST CONDITIONS

DEVICE START-UP CHARACTERISTICS

Device Enable Time t

LDO Soft-start Ramp Rate t

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

reaches 95% of the VO (nom) Slope of linear portion of LDO output voltage ramp during

SSR

start-up

EN PIN CHARACTERISTICS

Input Low Voltage V Input High Voltage V Input Leakage Current IIL, I Pin Capacitance C

IL IH

Informative 5 pF

NOTES:

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

7. VOx = 0.98*VOx(NOM); Valid for VOx greater than 1.85V.

8. Parts are 100% tested at +25°C. Temperature limits established by characterization and are not production tested.

= -40°C to +85°C; V

= (VO + 0.5V) to 5.5V with a minimum VIN of 2.3V;

MIN

(Note 8) TYP

MAX

(Note 8) UNITS

250 500 µs

30 60 µs/V

-0.3 0.5 V

1.4 V

+ 0.3 V

0.1 µA

FN9234.2

May 5, 2008

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