1

Date: 05/25/04

SP6203/6205 Low Noise, 300 and 500mA CMOS LDO Regulators

© Copyright 2004 Sipex Corporation

■ Very Low Dropout Voltage: 0.6Ω PMOS Pass

Device

■ Accurate Output Voltage: 2% over Temperature

■ Guaranteed 500mA Output Current: SP6205

■ Ultra Low Noise Output: 12µV

Bypass

■ Unconditionally Stable with 2.2µF Ceramic

■ Low Quiescent Current: 45µA

■ Very Low Ground Current: 350µA at 500 mA

■ Power-Saving Shutdown Mode: < 1µA

■ Fast Turn-On and Turn-Off: 60us

■ Fast Transient Response

■ Current Limit and Thermal Shutdown Protection

■ Very Good Load/Line Regulation: 0.07/0.04%

■ Excellent PSRR: 67dB<1kHz

■ Industry Standard 5 pin SOT-23 and Small 8

pin DFN Package

■ Fixed Output Voltages: 2.5V, 2.7V, 2.8V,

2.85V, 3.0V and 3.3V

■ Adjustable Output Available

Low Noise, 300mA and 500mA CMOS LDO Regulators

SP6203/6205

DESCRIPTION

■ Cellular / GSM Phones

■ Laptop / Palmtop Computers

■ Battery-Powered Systems

■ Pagers

■ Medical Devices

■ MP3/CD Players

■ Digital Still Cameras

FEATURES

APPLICATIONS

®

The SP6203/6205 are ultra low noise CMOS LDOs with very low dropout and ground current. The noise

performance is achieved by means of an external bypass capacitor without sacrificing turn-on and turn-off

speed critical to portable applications. Extremely stable and easy to use, these devices offer excellent PSRR

and Line/Load regulation. Target applications include battery-powered equipment such as portable and

wireless products. Regulators' ground current increases only slightly in dropout. Fast turn-on/turn-off enable

control and an internal 30Ω pull down on output allows quick discharge of output even under no load

conditions. Both LDOs are protected with current limit and thermal shutdown.

Both LDO's are availiable in fixed & adjustable output voltage versions and come in an industry standard

5 pin SOT-23 and small 8 pin DFN package. For SC-70 100mA CMOS LDO, SP6213 is available.

TYPICAL APPLICATION CIRCUIT

3

2

1

2.2µF Ceramic

EN

BYP

4

5

SP6203

SP6205

5-Pin

FIXED

2.2µF

3

2

1

2.2µF Ceramic

EN

ADJ

4

5

SP6203

SP6205

5-Pin

ADJUSTABLE

2.2µF

Fixed

Adjustable

Now Available in Lead Free Packaging

V

OUTSENSE

SP6203

SP6205

8 Pin DFN

V

IN

NC

V

OUT

BYP

GND

EN

NC

1

2

3

4

8

7

6

5

SP6203

SP6205

8 Pin DFN

V

IN

NC

V

OUT

ADJ

NC

GND

EN

NC

1

2

3

4

8

7

6

5