AS1312-BTDM-27

AS1312-BTDM-27 Datasheet

AS1312

Part	Datasheet
AS1312-BTDM-27	AS1312-BTDM-27 (pdf)

PDF Datasheet Preview
AS1312 Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter The AS1312 is an ultra low IQ hysteretic step-up DC-DC converter. The AS1312 achieves an efficiency of up to 94% and is designed to operate from a +0.7V to +5.0V supply, the output voltage is fixed in 50mV steps from +2.5V to 5.0V. In order to save power the AS1312 features a shutdown mode, where it draws less than 100nA. In shutdown mode the battery is not connected to the output. If the input voltage exceeds the output voltage the device is in a feedthrough mode and the input is directly connected to the output voltage. In light load operation, the device enters a sleep mode when most of the internal operating blocks are turned off in order to save power. This mode is active approximately 50us after a current pulse provided that the output is in regulation. The AS1312 also offers an adjustable low battery detection. If the battery voltage decreases below a threshold defined by two external resistors on pin LBI, the LBO output is pulled to logic low. LBO is working as Power-OK when LBI is connected to GND. The AS1312 is available in a 8-pin 2x2 TDFN and a 0.4mm pitch 8-pin WL-CSP package. Ordering Information and Content Guide appear at end of datasheet. Figure 1 Added Value of Using AS1312 Key Benefits & Features The benefits and features of AS1312, Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter are listed below: • Ideal for single Li-Ion battery powered applications • Extended battery life • Less power consumption • Supports a variety of end applications • Wide input voltage range 0.7V to 5.0V • Feedthrough mode when VIN > VOUT • High efficiency up to 94% • Low quiescent current of typ. 1uA • Low shutdown current of less than 100nA • Fixed output voltage range 2.5V to 5.0V • Peak output current of 200mA • Output disconnect in shutdown ams Datasheet [v1-19] 2016-Apr-14 Page 1 Document Feedback AS1312 − General Description • Over temperature protection and shutdown • Early power-fail warning • Cost effective, small package • Integrated temperature monitoring • Low battery detection • 8-pin WL-CSP with 0.4mm pitch • 8-pin TDFN 2mm x 2mm Figure 2 AS1312 Block Diagram The AS1312 is an ideal solution for • Handheld devices • Battery powered products Block Diagram The functional blocks of this device are shown below: VIN 0.7V to 5.0V L1 6.8µF LBI CIN 22 µ F Zero Crossing Detector AS1312 Driver & Control Logic Imax Detection VREF Startup Circuitry V VREF + - 100mV VOUT R3 100 k LBO VOUT 2.5V to 5.0V COUT 22 µ F C R EF 100 nF Page 2 Document Feedback ams Datasheet [v1-19] 2016-Apr-14 AS1312 − Pin Assignment AS1312 − Ordering & Contact Information Ordering & Contact Information The device is available as the standard products listed below. Figure 26 Ordering Information Ordering Code VOUT Package Marking Delivery Form Delivery Quantity AS1312-BTDT-50 8-pin 2x2 TDFN 5.0V AS1312-BTDM-50 8-pin 2x2 TDFN Tape and Reel Tape and Reel 10k pcs/reel 1k pcs/reel AS1312-BTDT-33 8-pin 2x2 TDFN 3.3V AS1312-BTDM-33 8-pin 2x2 TDFN Tape and Reel Tape and Reel 10k pcs/reel 1k pcs/reel AS1312-BTDT-30 8-pin 2x2 TDFN 3.0V AS1312-BTDM-30 8-pin 2x2 TDFN Tape and Reel Tape and Reel 10k pcs/reel 1k pcs/reel AS1312-BTDT-27 8-pin 2x2 TDFN 2.7V AS1312-BTDM-27 8-pin 2x2 TDFN Tape and Reel Tape and Reel 10k pcs/reel 1k pcs/reel AS1312-BWLT-50 8-pin WL-CSP 5.0V AS1312-BWLM-50 8-pin WL-CSP Tape and Reel Tape and Reel 10k pcs/reel 1k pcs/reel AS1312-BWLT-45 8-pin WL-CSP 4.5V The above figure shows the ordering codes for Tape & Reel deliveries suffix T in the ordering code . It is also possible to have all the variants on mini reels, when the ordering codes are AS1312-BTDM-xx or AS1312-BWLM where suffix M stands for mini reel . The components are the same in both reel sizes. ams Datasheet [v1-19] 2016-Apr-14 Page 25 Document Feedback AS1312 − Ordering&ContactInformation Buy our products or get free samples online at Technical Support is available at Provide feedback about this document at For further information and requests, e-mail us at For sales offices, distributors and representatives, please visit: Headquarters ams AG Tobelbaderstrasse 30 8141 Premstaetten Austria, Europe Tel +43 0 3136 500 0 Website: Page 26 Document Feedback ams Datasheet [v1-19] 2016-Apr-14 AS1312 − RoHS Compliant & ams Green Statement RoHS Compliant & ams Green Statement RoHS The term RoHS compliant means that ams AG products fully comply with current RoHS directives. Our semiconductor products do not contain any chemicals for all 6 substance categories, including the requirement that lead not exceed by weight in homogeneous materials. Where designed to be soldered at high temperatures, RoHS compliant products are suitable for use in specified lead-free processes. ams Green RoHS compliant and no Sb/Br ams Green defines that in addition to RoHS compliance, our products are free of Bromine Br and Antimony Sb based flame retardants Br or Sb do not exceed by weight in homogeneous material . Important Information The information provided in this statement represents ams AG knowledge and belief as of the date that it is provided. ams AG bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. ams AG has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ams AG and ams AG suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. ams Datasheet [v1-19] 2016-Apr-14 Page 27 Document Feedback Copyrights & Disclaimer AS1312 − Copyrights&Disclaimer Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten, 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. Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its General Terms of Trade. ams AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein. ams 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 ams AG for current information. This product is intended for use in 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 ams AG for each application. This product is provided by ams AG “AS IS” and any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed. ams 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 ams AG rendering of technical or other services. Page 28 Document Feedback ams Datasheet [v1-19] 2016-Apr-14 AS1312 − Document Status Document Status Document Status Product Status Definition Product Preview Pre-Development Information in this datasheet is based on product ideas in the planning phase of development. All specifications are design goals without any warranty and are subject to change without notice Preliminary Datasheet Pre-Production Information in this datasheet is based on products in the design, validation or qualification phase of development. The performance and parameters shown in this document are preliminary without any warranty and are subject to change without notice Datasheet Production Information in this datasheet is based on products in ramp-up to full production or full production which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade Datasheet discontinued Discontinued Information in this datasheet is based on products which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade, but these products have been superseded and should not be used for new designs ams Datasheet [v1-19] 2016-Apr-14 Page 29 Document Feedback Updated Figure 26 Page 30 Document Feedback ams Datasheet [v1-19] 2016-Apr-14 ams Datasheet [v1-19] 2016-Apr-14 Page 31 Document Feedback

PDF Datasheet Preview

AS1312

Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter

The AS1312 is an ultra low IQ hysteretic step-up DC-DC converter.

The AS1312 achieves an efficiency of up to 94% and is designed to operate from a +0.7V to +5.0V supply, the output voltage is fixed in 50mV steps from +2.5V to 5.0V.

In order to save power the AS1312 features a shutdown mode, where it draws less than 100nA. In shutdown mode the battery is not connected to the output.

If the input voltage exceeds the output voltage the device is in a feedthrough mode and the input is directly connected to the output voltage.

In light load operation, the device enters a sleep mode when most of the internal operating blocks are turned off in order to save power. This mode is active approximately 50us after a current pulse provided that the output is in regulation.

The AS1312 also offers an adjustable low battery detection. If the battery voltage decreases below a threshold defined by two external resistors on pin LBI, the LBO output is pulled to logic low. LBO is working as Power-OK when LBI is connected to GND.

The AS1312 is available in a 8-pin 2x2 TDFN and a 0.4mm pitch 8-pin WL-CSP package.
Ordering Information and Content Guide appear at end of datasheet.

Figure 1 Added Value of Using AS1312

Key Benefits & Features

The benefits and features of AS1312, Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter are listed below:
• Ideal for single Li-Ion battery powered applications
• Extended battery life
• Less power consumption
• Supports a variety of end applications
• Wide input voltage range 0.7V to 5.0V
• Feedthrough mode when VIN > VOUT
• High efficiency up to 94%
• Low quiescent current of typ. 1uA
• Low shutdown current of less than 100nA
• Fixed output voltage range 2.5V to 5.0V
• Peak output current of 200mA
• Output disconnect in shutdown
ams Datasheet [v1-19] 2016-Apr-14

Page 1 Document Feedback

AS1312 − General Description
• Over temperature protection and shutdown
• Early power-fail warning
• Cost effective, small package
• Integrated temperature monitoring
• Low battery detection
• 8-pin WL-CSP with 0.4mm pitch
• 8-pin TDFN 2mm x 2mm

Figure 2 AS1312 Block Diagram

The AS1312 is an ideal solution for
• Handheld devices
• Battery powered products

Block Diagram

The functional blocks of this device are shown below:

VIN 0.7V to 5.0V

L1 6.8µF LBI

CIN 22 µ F

Zero Crossing

Detector

AS1312

Driver & Control

Logic

Imax Detection

VREF

Startup Circuitry

V VREF
+ - 100mV

VOUT

R3 100 k LBO

VOUT 2.5V to 5.0V

COUT 22 µ F

C R EF 100 nF

Page 2 Document Feedback
ams Datasheet [v1-19] 2016-Apr-14

AS1312 − Pin Assignment
AS1312 − Ordering & Contact Information
Ordering & Contact Information The device is available as the standard products listed below.
Figure 26 Ordering Information
Ordering Code VOUT

Package

Marking Delivery Form Delivery Quantity

AS1312-BTDT-50
8-pin 2x2 TDFN
5.0V

AS1312-BTDM-50
8-pin 2x2 TDFN

Tape and Reel Tape and Reel
10k pcs/reel 1k pcs/reel

AS1312-BTDT-33
8-pin 2x2 TDFN
3.3V

AS1312-BTDM-33
8-pin 2x2 TDFN

Tape and Reel Tape and Reel
10k pcs/reel 1k pcs/reel

AS1312-BTDT-30
8-pin 2x2 TDFN
3.0V

AS1312-BTDM-30
8-pin 2x2 TDFN

Tape and Reel Tape and Reel
10k pcs/reel 1k pcs/reel

AS1312-BTDT-27
8-pin 2x2 TDFN
2.7V

AS1312-BTDM-27
8-pin 2x2 TDFN

Tape and Reel Tape and Reel
10k pcs/reel 1k pcs/reel

AS1312-BWLT-50
8-pin WL-CSP
5.0V

AS1312-BWLM-50
8-pin WL-CSP

Tape and Reel Tape and Reel
10k pcs/reel 1k pcs/reel

AS1312-BWLT-45
8-pin WL-CSP
4.5V
The above figure shows the ordering codes for Tape & Reel deliveries suffix T in the ordering code . It is also possible to have all the variants on mini reels, when the ordering codes are AS1312-BTDM-xx or AS1312-BWLM where suffix M stands for mini reel . The components are the same in both reel sizes.
ams Datasheet [v1-19] 2016-Apr-14

Page 25 Document Feedback
AS1312 − Ordering&ContactInformation

Buy our products or get free samples online at Technical Support is available at Provide feedback about this document at For further information and requests, e-mail us at For sales offices, distributors and representatives, please visit:

Headquarters ams AG Tobelbaderstrasse 30 8141 Premstaetten Austria, Europe

Tel +43 0 3136 500 0 Website:

Page 26 Document Feedback
ams Datasheet [v1-19] 2016-Apr-14

AS1312 − RoHS Compliant & ams Green Statement

RoHS Compliant & ams Green Statement

RoHS The term RoHS compliant means that ams AG products fully comply with current RoHS directives. Our semiconductor products do not contain any chemicals for all 6 substance categories, including the requirement that lead not exceed by weight in homogeneous materials. Where designed to be soldered at high temperatures, RoHS compliant products are suitable for use in specified lead-free processes.
ams Green RoHS compliant and no Sb/Br ams Green defines that in addition to RoHS compliance, our products are free of Bromine Br and Antimony Sb based flame retardants Br or Sb do not exceed by weight in homogeneous material .

Important Information The information provided in this statement represents ams AG knowledge and belief as of the date that it is provided. ams AG bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. ams AG has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. ams AG and ams AG suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
ams Datasheet [v1-19] 2016-Apr-14

Page 27 Document Feedback

Copyrights & Disclaimer

AS1312 − Copyrights&Disclaimer

Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten, 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.

Devices sold by ams AG are covered by the warranty and patent indemnification provisions appearing in its General Terms of Trade. ams AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein. ams 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 ams AG for current information. This product is intended for use in 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 ams AG for each application. This product is provided by ams AG “AS IS” and any express or implied warranties, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose are disclaimed.
ams 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 ams AG rendering of technical or other services.

Page 28 Document Feedback
ams Datasheet [v1-19] 2016-Apr-14

AS1312 − Document Status

Document Status

Document Status Product Status

Definition

Product Preview

Pre-Development

Information in this datasheet is based on product ideas in the planning phase of development. All specifications are design goals without any warranty and are subject to change without notice

Preliminary Datasheet

Pre-Production

Information in this datasheet is based on products in the design, validation or qualification phase of development. The performance and parameters shown in this document are preliminary without any warranty and are subject to change without notice

Datasheet

Production

Information in this datasheet is based on products in ramp-up to full production or full production which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade

Datasheet discontinued

Discontinued

Information in this datasheet is based on products which conform to specifications in accordance with the terms of ams AG standard warranty as given in the General Terms of Trade, but these products have been superseded and should not be used for new designs
ams Datasheet [v1-19] 2016-Apr-14

Page 29 Document Feedback

Updated Figure 26

Page 30 Document Feedback
ams Datasheet [v1-19] 2016-Apr-14
ams Datasheet [v1-19] 2016-Apr-14

Page 31 Document Feedback

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 AS1312-BTDM-27 Datasheet file may be downloaded here without warranties.

Datasheet ID: AS1312-BTDM-27 519582