as13985 austriamicrosystems, as13985 Datasheet

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as13985

Manufacturer Part Number
as13985
Description
150ma Micropower Low-noise Ldo
Manufacturer
austriamicrosystems
Datasheet

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A S 1 3 9 8 5
M i c r o p o w e r 1 5 0 m A L o w - N o i s e L D O
1 General Description
The AS13985 is a high-performance low-dropout 150mA
voltage regulator designed for use with very-low ESR out-
put capacitors. The device can deliver superior perfor-
mance in all specifications critical to battery-powered
designs, and is perfectly suited for mobile phones, PDAs,
MP3 players, and other battery powered devices.
Stability is guaranteed with a ceramic output capacitor from
1 to 22µF. The low equivalent series resistance of these
capacitors ensures low output impedance at high frequen-
cies.
Automatic sleep mode requires less than 1µA quiescent
current when pin EN is pulled low.
Regulation performance is excellent even under low drop-
out conditions, when the power transistor has to operate in
linear mode.
A 10nF bypass capacitor can be added to reduce output
noise to 30µV. The low-noise performance allows direct
connection of noise sensitive circuits without additional fil-
tering networks.
Multiple output voltage options are available as standard
products. Contact austriamicrosystems AG for details.
The AS13985 is available in a 5-bump WLP package and a
5-pin SOT23 package.
Figure 1. Block Diagram
www.austriamicrosystems.com
BYPASS
GND
V
EN
IN
V
REF
Revision 1.12
AS13985
+
2 Key Features
3 Applications
The AS13985 is ideal for powering cordless and mobile
phones, MP3 players, CD and DVD players, PDAs, hand-
held computers, digital cameras, and any other hand-held
battery-powered device.
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- 5-bump WLP
- 5-pin SOT23
Ultra-Low Dropout Voltage (typically
45mV @ 150mA, 0.3mV @ 1mA)
Supply Range: 2.5 to 5.5V
Output Voltage Range: 1.2 to 5.0V (in 25mV Steps)
Output Current: 150mA (Guaranteed)
Stable with Low-ESR Output Capacitor
Integrated Over-Temperature/Over-Current Protection
Low GND Pin Current (only 95µA)
Output Voltage Accuracy: 1%
Minimal External Components Required
High Peak-Current Capability
Low Shutdown Current: ≤1µA
Operating Temperature Junction Range: -40 to +125°C
Smallest Available Packages:
Over-Temperature
Over-Current/
Protection
V
OUT
D a t a S h e e t
1 - 12

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as13985 Summary of contents

Page 1

... The low-noise performance allows direct connection of noise sensitive circuits without additional fil- tering networks. Multiple output voltage options are available as standard products. Contact austriamicrosystems AG for details. The AS13985 is available in a 5-bump WLP package and a 5-pin SOT23 package. Figure 1. Block Diagram V IN ...

Page 2

... Input Voltage 1 2 Ground Low-Noise Operation Bypass Capacitor 3 Logic-High Enable Input. ≥ 1.2V enabled. EN OUT ≤ 0.4V disabled OUT Note: This pin must not float internally pulled up or down. 5 Regulated Output Voltage Revision 1. OUT AS13985 (SOT23 Description ...

Page 3

... AS13985 Data Sheet - Absolute Maximum Ratings Stresses beyond those listed in Table 2 and functional operation of the device at these or any other conditions beyond those indicated in Section 6 Electrical Characteristics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...

Page 4

... AS13985 Data Sheet - Electrical Characteristics T = 25º +0.5V, C AMB IN OUT(NOM) ified) Caution: Exposing the WLP package to direct light could cause device malfunction. Table 3. Electrical Characteristics Symbol Parameter V Operating Input Voltage ...

Page 5

... AS13985 Data Sheet - Table 3. Electrical Characteristics Symbol Parameter I Enable Input Current EN eN Output Noise Voltage Turn On Time Thermal Shutdown T SHDN 4, 6 Threshold Recommended Output Capacitor C Output Capacitor OUT 1 ...

Page 6

... AS13985 Data Sheet - Typical Operating Characteristics T = +25ºC (unless otherwise specified) AMB Figure 5. Output Voltage vs. Temperature 3.4V 1.4V 1mA IN SHDN OUT 3 2.975 2.95 2.925 2.9 2.875 2.85 2.825 2.8 -45 - ...

Page 7

... AS13985 Data Sheet - Figure 11. Line Transient Response 25º 150mA 1µ OUT IN OUT C = 10nF, Rise Time/Fall Time = 1µs BYPASS 1ms/Div www.austriamicrosystems.com = 3.8 to 4.4V, Figure 12. Turn On Time ...

Page 8

... AS13985 Data Sheet - Typical Application Figure 13. Typical Application Diagram BYPASS GND C BYPASS 0.01µF GND www.austriamicrosystems.com 1.23V – V REF + Over-Current/ Over-Temperature Protection AS13985 Revision 1. 1µF V OUT V OUT C OUT 1µ ...

Page 9

... AS13985 Data Sheet - Package Drawings and Markings The AS13985 is available in a 5-bump WLP package and a 5-pin SOT23 package. Figure 14. 5-bump WLP Package www.austriamicrosystems.com Revision 1. ...

Page 10

... AS13985 Data Sheet - Figure 15. 5-pin SOT23 Package Notes: 1. All dimensions are in millimeters. 2. Foot length is measured at the intercept point between datum A and lead surface. 3. Package outline exclusive of mold flash and metal burr. ...

Page 11

... AS13985 Data Sheet - Ordering Information The AS13985 is available as the standard versions listed in tact austriamicrosystems, AG for more information. Table 4. Ordering Information Model Marking AS13985F33-T ASKK AS13985F30-T ASKJ AS13985F29-T ASKI AS13985F28-T ASLE AS13985F27-T ...

Page 12

... AS13985 Data Sheet Copyrights Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, trans- lated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...

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