AS1362-BTTT-33

AS1362-BTTT-33 Datasheet

AS1361/AS1362

Part	Datasheet
AS1362-BTTT-33	AS1362-BTTT-33 (pdf)

Related Parts	Information
AS1362-BTTT-39	AS1362-BTTT-39
AS1362-BTTT-30	AS1362-BTTT-30
AS1362-BTTT-26	AS1362-BTTT-26
AS1362-BTTT-15	AS1362-BTTT-15
AS1361-BTTT-45	AS1361-BTTT-45
AS1362-BTTT-45	AS1362-BTTT-45
AS1362-BTTT-28	AS1362-BTTT-28
AS1362-BTTT-285	AS1362-BTTT-285
AS1362-BTTT-25	AS1362-BTTT-25
AS1362-BTTT-18	AS1362-BTTT-18
AS1362-BTTT-27	AS1362-BTTT-27

PDF Datasheet Preview
Datasheet AS1361/AS1362 150mA/300mA, Ultra-Low-Noise, High-PSRR Low Dropout Regulators, with POK 1 General Description 2 Key Features The AS1361/AS1362 are ultra-low-noise, low-dropout linear regulators specifically designed to deliver up to 150/300mA continuous output current, and can achieve a low 140mV dropout for 300mA load current. The LDOs are designed and optimized to work with low-cost, smallcapacitance ceramic capacitors. The devices are available as the standard products listed in Table Table Standard Products Model Load Current Output Voltage AS1361 150mA Preset to 4.5V AS1362 300mA Preset to 4.5V ! Preset Output Voltages to 4.5V in 50mV steps ! Output Noise 9µVRMS 100Hz to 100kHz ! Power-Supply Rejection Ratio 92dB 1kHz ! Low Dropout 140mV 300mA Load ! Power-OK Output ! Stable with 1µF Ceramic Capacitor for any Load ! Guaranteed 150/300mA Output ! 1.25V Internal Reference ! Extremely-Low Quiescent Current 40µA An integrated P-channel MOSFET pass transistor allows the devices to maintain extremely low quiescent current 40µA . The AS1361/AS1362 uses an advanced architecture to achieve ultra-low output voltage noise of 9µVRMS and a power-supply rejection-ratio of better than 80dB up to 10kHz . An active-Low, open-drain power-ok output indicates if the output voltage is within regulation. The AS1361/AS1362 requires only 1µF output capacitor for stability at any load. When the LDO is disabled, current consumption drops below 500nA. The devices are available in a TSOT23 6-pin package. ! Excellent Load/Line Transient ! Overcurrent and Thermal Protection ! TSOT23 6-pin Package 3 Applications The devices are ideal for mobile phones, wireless phones, PDAs, handheld computers, mobile phone base stations, Bluetooth portable radios and accessories, wireless LANs, digital cameras, personal audio devices, and any other portable, battery-powered application. Figure Typical Application Circuit Input 2 to 5.5V IN CIN 1µF 6 OUT 3 AS1361/ 4 Off SHDNN AS1362 Output to 4.5V 100kΩ 2 GND CBYPASS 10nF The AS1361/AS1362 deliver preset output voltages from to 4.5V, in 50mV increments see Ordering Information on page Shutdown The AS1361/AS1362 feature a low-power shutdown mode that reduces quiescent current to <200nA. Driving SHDNN low disables the internal voltage reference, error amplifier, gate-drive circuitry, and P-channel MOSFET pass transistor see Figure 18 , and the device output enters a high-impedance state. Note For normal operation connect pin SHDNN to pin IN. 9 - 15 AS1361/AS1362 Datasheet - Detailed Description Figure AS1361/AS1362 - Block Diagram AS1361/AS1362 SHDNN BYPASS GND Shutdown and Power-Down Control Thermal Sensor Error Amp Reference and Noise Bypass MOS Driver w/ ILIMIT OUT POK Power-OK The power-ok circuitry is built around an N-channel MOSFET. The circuitry monitors the output voltage and if the voltage goes out of regulation e.g. during dropout, current limit, or thermal shutdown pin POK goes low. The power-OK feature is not active during shutdown and provides a power-on-reset POR function that can operate down to VIN = 1V. A capacitor to GND may be added to generate a POR delay. To obtain a logic-level output, connect a pull-up resistor from pin POK to pin OUT. Larger values for this resistor will help minimize current consumption a 100kΩ resistor is perfect for most applications see Figure 1 on page Current Limit The AS1361/AS1362 include a current limiting circuitry to monitor and control the P-channel MOSFET pass transistor’s gate voltage, thus limiting the device output current to 270mA AS1361 and 510mA AS1362 . Note See Table 4 on page 4 for the recommended min and max current limits. The output can be shorted to ground indefinitely without causing damage to the device. Thermal Protection Integrated thermal protection circuitry limits total power dissipation in the AS1361/AS1362. When the junction temperature TJ exceeds +160ºC, the thermal sensor signals the shutdown logic, turning off the P-channel MOSFET pass transistor and allowing the device to cool down. The thermal sensor turns the pass transistor on again after the device’s junction temperature drops by 10ºC, resulting in a pulsed output during continuous thermal-overload conditions. Note Thermal protection is designed to protect the devices in the event of fault conditions. For continuous operation, do not exceed the absolute maximum junction temperature rating of +150ºC. Operating Region and Power Dissipation The AS1361/AS1362 maximum power dissipation is dependant on the thermal resistance of the case and PCB, the temperature difference between the die junction and TAMB, and airflow rate. Power dissipation across the device is calculated as: PD = IOUT VIN - VOUT 10 - 15 AS1361/AS1362 Datasheet - Detailed Description The maximum power dissipation is calculated: PDMAX = TJ - + Where TJ - TAMB is the temperature difference between the AS1361/AS1362 die junction and the surrounding air is the thermal resistance of the package is the thermal resistance through the PC board/copper traces/other materials to the surrounding air. Note Pin GND of the AS1361/AS1362 provides the electrical connection to system ground and also serves as a heat sink. Connect pin GND to the system ground using a large pad or ground plane. Datasheet - Ordering Information 11 Ordering Information The devices are available as the standard products shown in Table Table Ordering Information Ordering Code Marking AS1361-BTTT-15 ASL2 AS1361-BTTT-18 ASL3 AS1361-BTTT-25 ASL4 AS1361-BTTT-26 ASL5 AS1361-BTTT-27 ASL6 AS1361-BTTT-28 ASL7 AS1361-BTTT-285 ASL8 AS1361-BTTT-30 ASL9 AS1361-BTTT-33 ASMA AS1361-BTTT-45 ASMB AS1362-BTTT-15 ASMC AS1362-BTTT-18 ASMD AS1362-BTTT-25 ASME AS1362-BTTT-26 ASMF AS1362-BTTT-27 ASMG AS1362-BTTT-28 ASMH AS1362-BTTT-285 ASMI AS1362-BTTT-30 ASMJ AS1362-BTTT-33 ASMK AS1362-BTTT-45 ASML Output Current 150mA 300mA Output Voltage 1.5V 1.8V 2.5V 2.6V 2.7V 2.8V 2.85V 3.0V 3.3V 4.5V 1.5V 1.8V 2.5V 2.6V 2.7V 2.8V 2.85V 3.0V 3.3V 4.5V Delivery Form Package Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Non-standard devices from 1.5V to 4.5V are available in 50mV steps. For more information and inquiries contact Note All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at 14 - 15 AS1361/AS1362 Datasheet Copyrights Copyright 1997-2009, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, 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. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: 15 - 15

PDF Datasheet Preview

Datasheet

AS1361/AS1362
150mA/300mA, Ultra-Low-Noise, High-PSRR Low Dropout Regulators, with POK
1 General Description
2 Key Features

The AS1361/AS1362 are ultra-low-noise, low-dropout linear regulators specifically designed to deliver up to 150/300mA continuous output current, and can achieve a low 140mV dropout for 300mA load current. The LDOs are designed and optimized to work with low-cost, smallcapacitance ceramic capacitors.

The devices are available as the standard products listed in Table

Table Standard Products

Model Load Current

Output Voltage

AS1361
150mA

Preset to 4.5V

AS1362
300mA

Preset to 4.5V
! Preset Output Voltages to 4.5V in 50mV steps ! Output Noise 9µVRMS 100Hz to 100kHz ! Power-Supply Rejection Ratio 92dB 1kHz ! Low Dropout 140mV 300mA Load ! Power-OK Output ! Stable with 1µF Ceramic Capacitor for any Load ! Guaranteed 150/300mA Output ! 1.25V Internal Reference ! Extremely-Low Quiescent Current 40µA

An integrated P-channel MOSFET pass transistor allows the devices to maintain extremely low quiescent current 40µA .

The AS1361/AS1362 uses an advanced architecture to achieve ultra-low output voltage noise of 9µVRMS and a power-supply rejection-ratio of better than 80dB up to 10kHz .

An active-Low, open-drain power-ok output indicates if the output voltage is within regulation.

The AS1361/AS1362 requires only 1µF output capacitor for stability at any load. When the LDO is disabled, current consumption drops below 500nA.

The devices are available in a TSOT23 6-pin package.
! Excellent Load/Line Transient
! Overcurrent and Thermal Protection
! TSOT23 6-pin Package
3 Applications

The devices are ideal for mobile phones, wireless phones, PDAs, handheld computers, mobile phone base stations, Bluetooth portable radios and accessories, wireless LANs, digital cameras, personal audio devices, and any other portable, battery-powered application.

Figure Typical Application Circuit

Input
2 to 5.5V

IN CIN
1µF
6 OUT
3 AS1361/ 4

Off SHDNN

AS1362

Output to 4.5V
100kΩ
2 GND

CBYPASS
10nF
The AS1361/AS1362 deliver preset output voltages from to 4.5V, in 50mV increments see Ordering Information on page

Shutdown

The AS1361/AS1362 feature a low-power shutdown mode that reduces quiescent current to <200nA. Driving SHDNN low disables the internal voltage reference, error amplifier, gate-drive circuitry, and P-channel MOSFET pass transistor see Figure 18 , and the device output enters a high-impedance state.

Note For normal operation connect pin SHDNN to pin IN.
9 - 15

AS1361/AS1362

Datasheet - Detailed Description

Figure AS1361/AS1362 - Block Diagram

AS1361/AS1362

SHDNN

BYPASS GND

Shutdown and Power-Down

Control

Thermal Sensor

Error Amp

Reference and Noise Bypass

MOS Driver w/

ILIMIT

OUT POK

Power-OK

The power-ok circuitry is built around an N-channel MOSFET. The circuitry monitors the output voltage and if the voltage goes out of regulation e.g. during dropout, current limit, or thermal shutdown pin POK goes low.

The power-OK feature is not active during shutdown and provides a power-on-reset POR function that can operate down to VIN = 1V. A capacitor to GND may be added to generate a POR delay.

To obtain a logic-level output, connect a pull-up resistor from pin POK to pin OUT. Larger values for this resistor will help minimize current consumption a 100kΩ resistor is perfect for most applications see Figure 1 on page

Current Limit

The AS1361/AS1362 include a current limiting circuitry to monitor and control the P-channel MOSFET pass transistor’s gate voltage, thus limiting the device output current to 270mA AS1361 and 510mA AS1362 .

Note See Table 4 on page 4 for the recommended min and max current limits. The output can be shorted to ground indefinitely without causing damage to the device.

Thermal Protection

Integrated thermal protection circuitry limits total power dissipation in the AS1361/AS1362. When the junction temperature TJ exceeds +160ºC, the thermal sensor signals the shutdown logic, turning off the P-channel MOSFET pass transistor and allowing the device to cool down. The thermal sensor turns the pass transistor on again after the device’s junction temperature drops by 10ºC, resulting in a pulsed output during continuous thermal-overload conditions.

Note Thermal protection is designed to protect the devices in the event of fault conditions. For continuous operation, do not exceed the absolute maximum junction temperature rating of +150ºC.

Operating Region and Power Dissipation

The AS1361/AS1362 maximum power dissipation is dependant on the thermal resistance of the case and PCB, the
temperature difference between the die junction and TAMB, and airflow rate.

Power dissipation across the device is calculated as:

PD = IOUT VIN - VOUT
10 - 15

AS1361/AS1362

Datasheet - Detailed Description

The maximum power dissipation is calculated:

PDMAX = TJ - +

Where TJ - TAMB is the temperature difference between the AS1361/AS1362 die junction and the surrounding air is the thermal resistance of the package is the thermal resistance through the PC board/copper traces/other materials to the surrounding air.

Note Pin GND of the AS1361/AS1362 provides the electrical connection to system ground and also serves as a heat sink. Connect pin GND to the system ground using a large pad or ground plane.
Datasheet - Ordering Information
11 Ordering Information

The devices are available as the standard products shown in Table
Table Ordering Information Ordering Code Marking AS1361-BTTT-15 ASL2 AS1361-BTTT-18 ASL3 AS1361-BTTT-25 ASL4 AS1361-BTTT-26 ASL5 AS1361-BTTT-27 ASL6 AS1361-BTTT-28 ASL7

AS1361-BTTT-285 ASL8 AS1361-BTTT-30 ASL9 AS1361-BTTT-33 ASMA AS1361-BTTT-45 ASMB AS1362-BTTT-15 ASMC AS1362-BTTT-18 ASMD AS1362-BTTT-25 ASME AS1362-BTTT-26 ASMF AS1362-BTTT-27 ASMG AS1362-BTTT-28 ASMH AS1362-BTTT-285 ASMI AS1362-BTTT-30 ASMJ AS1362-BTTT-33 ASMK AS1362-BTTT-45 ASML

Output Current 150mA 300mA

Output Voltage 1.5V 1.8V 2.5V 2.6V 2.7V 2.8V 2.85V 3.0V 3.3V 4.5V 1.5V 1.8V 2.5V 2.6V 2.7V 2.8V 2.85V 3.0V 3.3V 4.5V

Delivery Form Package Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin Tape and Reel TSOT23 6-pin

Non-standard devices from 1.5V to 4.5V are available in 50mV steps. For more information and inquiries contact

Note All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect:

For further information and requests, please contact us or find your local distributor at
14 - 15

AS1361/AS1362

Datasheet

Copyrights

Copyright 1997-2009, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered All rights reserved. The material herein may not be reproduced, adapted, merged, translated, 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.

Disclaimer

Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services.

Contact Information

Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel +43 0 3136 500 0 Fax +43 0 3136 525 01

For Sales Offices, Distributors and Representatives, please visit:
15 - 15

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AS1362-BTTT-33 Datasheet file may be downloaded here without warranties.

Datasheet ID: AS1362-BTTT-33 519620