Analog Devices ADP3309 b Datasheet

anyCAP® 100 mA

a

FEATURES ⴞ1.2% Accuracy Over Line and Load Regulations @ 25ⴗC Ultralow Dropout Voltage: 120 mV Typical @ 100 mA Requires Only C anyCAP = Stable with All Types of Capacitors

(including MLCC)
Current and Thermal Limiting
Low Noise
Low Shutdown Current: 1 ␮A

2.8 V to 12 V Supply Range
–20ⴗC to +85ⴗC Ambient Temperature Range
Several Fixed Voltage Options
Ultrasmall SOT-23-5 Package
Excellent Line and Load Regulations

APPLICATIONS
Cellular Telephones
Notebook, Palmtop Computers
Battery-Powered Systems
PCMCIA Regulator
Bar Code Scanners
Camcorders, Cameras

= 0.47 ␮F for Stability

O

Low Dropout Linear Regulator

ADP3309

FUNCTIONAL BLOCK DIAGRAM

ADP3309

CC

g

m

BAND GAP

REF

R1

R2

ERR/NC

SD

IN

THERMAL

PROTECTION

Q2

Q1

DRIVER

GND

OUT

GENERAL DESCRIPTION

The ADP3309 is a member of the ADP330x family of precision
low dropout anyCAP voltage regulators. It is pin-for-pin and
functionally compatible with National’s LP2981, but offers
performance advantages. The ADP3309 stands out from con­ventional LDOs with a novel architecture and an enhanced
process. Its patented design requires only a 0.47 µF output
capacitor for stability. This device is stable with any type of
capacitor regardless of its ESR (equivalent series resistance)
value, including ceramic types for space restricted applications.
The ADP3309 achieves ±1.2% accuracy at room temperature
and ± 2.2% overall accuracy over temperature, line, and load
regulations. The dropout voltage of the ADP3309 is only

REV. B

120 mV (typical) at 100 mA. This device also includes a current
limit and a shutdown feature. In shutdown mode, the ground
current is reduced to ~1 µA.

The ADP3309 operates with a wide input voltage range from

2.8 V to 12 V and delivers a load current in excess of 100 mA.
The ADP3309 anyCAP LDO offers a wide range of output
voltages. For a 50 mA version, refer to the ADP3308 data sheet.

ERR/NC

IN

0.47␮F

ADP3309-3.3

IN

+

C1

–

SD

OFF

OUT

ON

GND

V

= 3.3V V

C2

0.47␮F

OUT

+
–

Figure 1. Typical Application Circuit

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may result from its use. No license is granted by implication or otherwise
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Tel: [phone] www.analog.com
Fax: [phone] © 2004 Analog Devices, Inc. All rights reserved.

ADP3309–SPECIFICATIONS

(@TA = –20ⴗC to +85ⴗC, VIN = 7 V, CIN = 0.47 ␮F, C
otherwise noted.)1 The following specifications apply to all voltage options.

= 0.47 ␮F, unless

OUT

Parameter Symbol Conditions Min Typ Max Unit

OUTPUT VOLTAGE ACCURACY V

OUT

VIN = V
I
T
V

OUTNOM

= 0.1 mA to 100 mA

L

= 25°C –1.2 +1.2 %

A

= V

IN

OUTNOM

+ 0.3 V to 12 V

+ 0.3 V to 12 V

IL = 0.1 mA to 100 mA –2.2 +2.2 %

LINE REGULATION V

LOAD REGULATION I

GROUND CURRENT I

∆∆V

V

∆∆V

GND

O

IN

O

I

L

IN

= V

OUTNOM

+ 0.3 V to 12 V

TA = 25°C 0.02 mV/V

= 0.1 mA to 100 mA

L

TA = 25°C 0.06 mV/mA

IL = 100 mA 0.8 2.0 mA
IL = 0.1 mA 0.19 0.3 mA

GROUND CURRENT IN DROPOUT I

GND

VIN = 2.4 V
IL = 0.1 mA 0.9 1.7 mA

DROPOUT VOLTAGE V

DROP

V

= 98% of V

OUT

OUTNOM

IL = 100 mA 0.12 0.25 V

= 10 mA 0.025 0.07 V

I

L

IL = 1 mA 0.004 0.015 V

SHUTDOWN THRESHOLD V

THSD

ON 2.0 V
OFF 0.3 V

SHUTDOWN PIN INPUT CURRENT I

SDIN

0 < VSD ≤ 5 V 1 µA
5 < VSD ≤ 12 V @ VIN = 12 V 9 µA

GROUND CURRENT IN SHUTDOWN I

Q

MODE T

VSD = 0 V, VIN = 12 V

= 25°C 0.005 1 µA

A

V

= 0 V, VIN = 12 V

SD

TA = 85°C 0.01 3 µA

OUTPUT CURRENT IN SHUTDOWN I

OSD

TA = 25°C @ VIN = 12 V 2 µA

MODE TA = 85°C @ VIN = 12 V 4 µA

ERROR PIN OUTPUT LEAKAGE I

EL

VEO = 5 V 13 µA

ERROR PIN OUTPUT

LOW VOLTAGE V

PEAK LOAD CURRENT I

OUTPUT NOISE @ 5 V OUTPUT V

NOTES

1

Ambient temperature of 85°C corresponds to a junction temperature of 125 °C under typical full load test conditions.

Specifications subject to change without notice.

EOL

LDPK

NOISE

I

= 400 µA 0.12 0.3 V

SINK

VIN = V

+ 1 V, TA = 25°C 150 mA

OUTNOM

f = 10 Hz–100 kHz 100 µV rms

–2–

REV. B

ADP3309

GND

TOP VIEW

(Not to Scale)

SD

OUT

ADP3309

IN

ERR/NC

NC = NO CONNECT

ABSOLUTE MAXIMUM RATINGS*

Input Supply Voltage . . . . . . . . . . . . . . . . . . . –0.3 V to +16 V

Shutdown Input Voltage . . . . . . . . . . . . . . . . –0.3 V to +16 V

Power Dissipation . . . . . . . . . . . . . . . . . . . .Internally Limited

Operating Ambient Temperature Range . . . –55°C to +125°C
Operating Junction Temperature Range . . . –55°C to +125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190°C/W

θ

JA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92°C/W

θ

JC

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

Lead Temperature Range (Soldering 10 sec) . . . . . . . . . 300°C

Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215°C

Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C

*Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability. Only one absolute
maximum rating may be applied at any one time.

ORDERING GUIDE

PIN FUNCTION DESCRIPTIONS

Pin Name Function

1INRegulator Input.
2GND Ground Pin.
3 SD Active Low Shutdown Pin. Connect to

ground to disable the regulator output.
When shutdown is not used, this pin
should be connected to the input pin.

4 ERR/NC Open Collector. Output that goes low

to indicate the output is about to go
out of regulation. This pin can be left open.
(NC = No Connect).

5 OUT Output of the Regulator. Fixed 2.5, 2.7, 2.85,

2.9, 3.0, 3.3, or 3.6 volts output voltage.
Bypass to ground with a 0.47 µF or larger
capacitor.

PIN CONFIGURATION

Temperature Voltage Package Package

Model Range Output Description Option Branding

ADP3309ART-2.5-REEL –20°C to +85°C 2.5 V SOT-23 RT-5 LDE
ADP3309ART-2.5-REEL7 –20°C to +85°C 2.5 V SOT-23 RT-5 LDE
ADP3309ART-2.7-REEL –20°C to +85°C 2.7 V SOT-23 RT-5 DNC
ADP3309ART-2.7-REEL7 –20°C to +85°C 2.7 V SOT-23 RT-5 DNC
ADP3309ART-2.85-REEL –20°C to +85°C 2.85 V SOT-23 RT-5 DVC
ADP3309ART-2.85-REEL7 –20°C to +85°C 2.85 V SOT-23 RT-5 DVC
ADP3309ART-2.9-REEL –20°C to +85°C 2.9 V SOT-23 RT-5 DWC
ADP3309ART-2.9-REEL7 –20°C to +85°C 2.9 V SOT-23 RT-5 DWC
ADP3309ART-3-REEL –20°C to +85°C 3.0 V SOT-23 RT-5 DPC
ADP3309ART-3-REEL7 –20°C to +85°C 3.0 V SOT-23 RT-5 DPC
ADP3309ART-3.3-REEL –20°C to +85°C 2.7 V SOT-23 RT-5 DRC
ADP3309ART-3.3-REEL7 –20°C to +85°C 2.7 V SOT-23 RT-5 DRC
ADP3309ART-3.6-REEL –20°C to +85°C 2.7 V SOT-23 RT-5 DTC
ADP3309ART-3.6-REEL7 –20°C to +85°C 2.7 V SOT-23 RT-5 DTC

Other Member of anyCAP Family

1

Model Output Current Package Option

ADP3308 50 mA SOT-23-5 Lead

NOTES

1

See individual data sheet for detailed ordering information.

2

SOT = Surface Mount.

2

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the ADP3309 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.

REV. B

–3–

WARNING!

ESD SENSITIVE DEVICE