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ADP3303

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700 World Wide Web Site: http://www.analog.com

Fax: © Analog Devices, Inc.,

High Accuracy anyCAP™

200 mA Low Dropout Linear Regulator

FUNCTIONAL BLOCK DIAGRAM

THERMAL

PROTECTION

BANDGAP

REF

DRIVER

ADP3303

OUT

ERR

GND

ADP3303-5.0

OUT

ERR

330kV

OUT

0.47mF

OUT

= +5V

OFF

0.47mF

GND

Figure 1. Typical Application Circuit

FEATURES

High Accuracy Over Line and Load ⴞ0.8% @ at +25ⴗC,

ⴞ1.4% Over Temperature

Ultralow Dropout Voltage: 180 mV (Typ) @ 200 mA

Requires Only C

= 0.47 ␮F for Stability

anyCAP = Stable with All Types of Capacitors

(Including MLCC)

3.2 V to 12 V Supply Range

Current and Thermal Limiting

Low Noise

Dropout Detector

Low Shutdown Current: < 1 ␮A

Thermally Enhanced SO-8 Package

Excellent Line and Load Regulation Performance

APPLICATIONS

Cellular Telephones

Notebook, Palmtop Computers

Battery Powered Systems

Portable Instruments

Post Regulator for Switching Supplies

Bar Code Scanners

GENERAL DESCRIPTION

The ADP3303 is a member of the ADP330x family of preci-

sion low dropout anyCAP voltage regulators. The ADP3303

stands out from the conventional LDOs with a novel architec-

ture, an enhanced process and a new package. Its patented

design requires only a 0.47 µF output capacitor for stability.

This device is insensitive to capacitor Equivalent Series Resis-

tance (ESR) and is stable with any good quality capacitor, in-

cluding ceramic types (MLCC) for space restricted applications.

The ADP3303 achieves exceptional accuracy of ±0.8% at room

temperature and ±1.4% overall accuracy over temperature, line

and load regulations. The dropout voltage of the ADP3303 is

only 180 mV (typical) at 200 mA.

In addition to the new architecture and process, ADI’s new

proprietary thermally enhanced package (Thermal Coastline)

can handle 1 W of power dissipation without external heatsink

or large copper surface on the PC board. This keeps PC board

real estate to a minimum and makes the ADP3303 very attrac-

tive for use in portable equipment.

The ADP3303 operates with a wide input voltage range from

3.2 V to 12 V and delivers a load current in excess of 200 mA.

It features an error flag that signals when the device is about to

lose regulation or when the short circuit or thermal overload

protection is activated. Other features include shutdown and

optional noise reduction capabilities. The ADP330x anyCAP

LDO family offers a wide range of output voltages and output

current levels:

ADP3300 (50 mA, SOT-23)

ADP3301 (100 mA)

ADP3302 (100 mA, Dual Output)

ADP3307 (100 mA, SOT-23-6)

ADP3308 (50 mA, SOT-23-5)

ADP3309 (100 mA, SOT-23-5)

anyCAP is a trademark of Analog Devices Inc.

2011

781/461-3113

Summary of content (9 pages)

PAGE 1
a High Accuracy anyCAP™ 200 mA Low Dropout Linear Regulator ADP3303 FEATURES High Accuracy Over Line and Load ⴞ0.8% @ at +25ⴗC, ⴞ1.4% Over Temperature Ultralow Dropout Voltage: 180 mV (Typ) @ 200 mA Requires Only CO = 0.47 ␮F for Stability anyCAP = Stable with All Types of Capacitors (Including MLCC) 3.
PAGE 2
−25°C to +85°C, VIN = 7 V, CIN = 0.47 ␮F, COUT = 0.47 ␮F, unless T = ADP3303-xx–SPECIFICATIONS (@otherwise noted) A 1 Parameter Symbol Conditions Min OUTPUT VOLTAGE ACCURACY VOUT VIN = VOUTNOM +0.5 V to 12 V IL = 0.1 mA to 200 mA TA = +25°C VIN = VOUTNOM +0.5 V to 12 V IL = 0.1 mA to 200 mA Typ Max Units –0.8 +0.8 % –1.4 +1.4 % ∆VO ∆VIN VIN = VOUTNOM +0.5 V to 12 V TA = +25°C 0.01 mV/V ∆VO ∆IL IL = 0.1 mA to 200 mA TA = +25°C 0.013 mV/mA GROUND CURRENT IGND IL = 200 mA IL = 0.
PAGE 3
ADP3303 ABSOLUTE MAXIMUM RATINGS* PIN FUNCTION DESCRIPTIONS Input Supply Voltage . . . . . . . . . . . . . . . . . . . –0.3 V to +16 V Shutdown Input Voltage . . . . . . . . . . . . . . . . –0.3 V to +16 V Error Flag Output Voltage . . . . . . . . . . . . . . . –0.3 V to +16 V Noise Bypass Pin Voltage . . . . . . . . . . . . . . . . –0.3 V to +5 V Power Dissipation . . . . . . . . . . . . . . . . . . . Internally Limited Operating Ambient Temperature Range . . . .
PAGE 4
ADP3303 –Typical Performance Characteristics IL = 0mA 3.3005 VIN = 7V VOUT = 3.2V 3.2995 IL = 100mA 3.2990 3.2985 IL = 200mA 3.2980 3.2000 3.1995 3.1990 3.1985 3.1980 3.2975 3.2970 3.3 4 3.1975 5 6 7 8 9 10 11 12 13 14 15 16 INPUT VOLTAGE – Volts Figure 2. Line Regulation: Output Voltage vs. Supply Voltage VOUT = 3.3V IL = 0mA 1.0 GROUND CURRENT – mA VOUT = 3.3V OUTPUT VOLTAGE – Volts 3.3000 OUTPUT VOLTAGE – Volts 3.2005 IL = 10mA 0 20 40 0.2 1400 0.1 0.6 0.4 0.
PAGE 5
ADP3303 5.02 3.310 5.02 VOUT = 5V 5.01 5.00 5.00 3.305 Volts 5.01 4.99 4.99 25⍀, 0.47␮F LOAD Volts 4.98 3.295 3.290 VIN 7.5 7.0 20 40 60 80 100 120 140 160 180 200 TIME – ␮s Figure 11. Line Transient Response I(VOUT) 200 10 7.0 0 CL = 0.47␮F 4.98 VIN 7.5 5k⍀, 0.47␮F LOAD VOUT 3.300 mA Volts VOUT = 3.3V VOUT = 5V 0 40 0 80 120 160 200 240 280 320 360 400 TIME – ␮s Figure 12. Line Transient Response 200 400 600 TIME – ␮s 800 1000 Figure 13.
PAGE 6
ADP3303 This is no longer true with the ADP3303 anyCAP LDO. It can be used with virtually any capacitor, with no constraint on the minimum ESR. The innovative design allows the circuit to be stable with just a small 0.47 µF capacitor on the output. Additional advantages of the pole splitting scheme include superior line noise rejection and very high regulator gain, which leads to excellent line and load regulation. An impressive ±1.4% accuracy is guaranteed over line, load and temperature.
PAGE 7
ADP3303 Thermal Overload Protection The ADP3303 is protected against damage due to excessive power dissipation by its thermal overload protection circuit, which limits the die temperature to a maximum of 165°C. Under extreme conditions (i.e., high ambient temperature and power dissipation), where die temperature starts to rise above 165°C, the output current is reduced until the die temperature has dropped to a safe level. The output current is restored when the die temperature is reduced.
PAGE 8
ADP3303 MJE253* VIN = 5.5V TO 12V OUT IN VIN = 6V TO 8V VOUT = 5V/3.3V C1 47mF ADP3303-5.0 OUTPUT SELECT VOUT = 5V @ 1A R1 50V SD 5V GND 0V IN C2 10mF ADP3303-5 OUT IN C1 1.0mF OUT C2 0.47mF ADP3303-3.3 ERR SD GND SD GND *AAVID531002 HEATSINK IS USED Figure 24. High Output Current Linear Regulator Figure 23. Crossover Switch Higher Output Current Constant Dropout Post Regulator The ADP3303 can source up to 200 mA without any heatsink or pass transistor.
PAGE 9
ADP3303 OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890) 1 5 4 1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 0.10 SEATING PLANE 6.20 (0.2441) 5.80 (0.2284) 1.75 (0.0688) 1.35 (0.0532) 0.51 (0.0201) 0.31 (0.0122) 0.50 (0.0196) 0.25 (0.0099) 45° 8° 0° 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.