AS1345D-BTDT-AD

AS1345D-BTDT-AD Datasheet

AS1345

Part	Datasheet
AS1345D-BTDT-AD	AS1345D-BTDT-AD (pdf)

Related Parts	Information
AS1345C-BTDT-AD	AS1345C-BTDT-AD
AS1345A-BTDT-AD	AS1345A-BTDT-AD
AS1345D-BWLT-15	AS1345D-BWLT-15
AS1345D-BWLT-17	AS1345D-BWLT-17
AS1345A-BWLT-17	AS1345A-BWLT-17
AS1345A-BWLT-15	AS1345A-BWLT-15
AS1345A-BWLT-12	AS1345A-BWLT-12
AS1345A-BWLT-AD	AS1345A-BWLT-AD
AS1345B-BTDT-AD	AS1345B-BTDT-AD

PDF Datasheet Preview
AS1345 18V, High Efficiency, DC-DC Step-Up Converter The AS1345 high efficiency DC-DC step-up converter contains an internal N-channel and an internal P-channel output isolation switch. The device operates from a 2.9V to 5.0V supply and can boost voltages up to 18V. A hysteretic control scheme is used to provide the highest operating efficiency over a wide range of input and output load conditions. The internal MOSFET switches reduce the external component count and a high switching frequency allows the use of tiny surface mount components. The AS1345 employ a factory set current limit to reduce ripple and external component size in low output current applications. With a 500mA current limit the AS1345 is capable of providing 20mA 18V output. Figure AS1345 1 Available Products Devices AS1345A AS1345B AS1345C AS1345D Peak Coil Current 100mA 200mA 350mA 500mA Output adjustable or fixed adjustable or fixed adjustable or fixed adjustable or fixed Figure AS1345 2 Key Benefits and Features For order related information, please refer to “Ordering Information” on page Built-in safety features protect the internal switches and output components from fault conditions. Additional power-saving attributes include a very low quiescent current and a true shutdown mode. Supports Lithium primary and re-chargeable batteries Supports a variety of end applications Features Input Voltage Range 2.9V to 5.0V Adjustable Output Voltage Range 5.0V to 18V 18V, High Efficiency, DC-DC Step-Up Converter AS1345 1 Benefits Supports a variety of end applications Allows optimization of circuit depending on output power demands Battery life improved Battery supply isolated during shutdown Fault tolerant Small chipscale package Output Current up to 40mA Inductor Peak Currents 100, 200, 350 and 500 mA 90% Efficiency True Shutdown Short Circuit and Thermal Protection Packages: • 8-pin 2x2mm TDFN • 8-bumps 1.570mm x 0.895mm WL-CSP with 0.4mm pitch Figure AS1345 3 Typical Application Diagram The AS1345 is ideal for small and low current demand LCD panels, as well as for polymer LEDs OLED , cell phones, PDAs, readers, mobile terminals and 3D shutter glasses. 10uF 10uH to 22uH VDD = 2.9V to 5.0V SWIN VDD SWOUT LX 10uF 100k POK AS1345 47pF FB ON EN Vout = 5.0V to 18V R2 1uF to 10uF AS1345 2 18V, High Efficiency, DC-DC Step-Up Converter Pin Assignments Figure AS1345 4 Pin Assignments Top View VDD 1 EN 2 FB 3 AS1345 TDFN 8-pin 2x2mm Thermal pad GND 8 GND 7 LX 6 SWOUT POK 4 5 SWIN 9 SWOUT SWIN Pin A1 indicator Figure AS1345 5 Pin Descriptions Pin Number TDFN WLP Ordering Information Figure AS1345 28 Ordering Information The device is available as the standard products listed in the table below. On request, all devices can be factory set to enable a 100kΩ pull-down resistor for the EN pin. Ordering Code Marking ILIMIT Output Delivery Form AS1345A-BWLT-AD adjustable AS1345A-BWLT-12 100mA AS1345A-BWLT-15 AS1345A-BWLT-17 AS1345A-BTDT-AD 100mA adjustable 18V, High Efficiency Tape and AS1345B-BTDT-AD 200mA adjustable DCDC Step-up Reel Converter AS1345C-BTDT-AD 350mA adjustable AS1345D-BTDT-AD 500mA adjustable AS1345D-BWLT-15 500mA AS1345D-BWLT-17 500mA Package 8-bumps 1.570x0.895m m WL-CSP 8-pin 2x2mm TDFN 8-bumps 1.570x0.895m m WL-CSP All products are RoHS compliant and ams green. Buy our products or get free samples online at Technical Support is available at For further information and requests, e-mail us at or find your local distributor at AS1345 24 18V, High Efficiency, DC-DC Step-Up Converter RoHS Compliant and ams Green Statement The term RoHS complaint means that ams products fully comply with current RoHS directive. 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 means RoHS compliant and no Sb/Br . ams defines Green that additionally 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 and Disclaimer The information provided in this statement represents ams knowledge and belief as of the date that it is provided. ams 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 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 and ams suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. 18V, High Efficiency, DC-DC Step-Up Converter AS1345 25 Copyrights Disclaimer

PDF Datasheet Preview

AS1345
18V, High Efficiency, DC-DC Step-Up Converter

The AS1345 high efficiency DC-DC step-up converter contains an internal N-channel and an internal P-channel output isolation switch.

The device operates from a 2.9V to 5.0V supply and can boost voltages up to 18V.

A hysteretic control scheme is used to provide the highest operating efficiency over a wide range of input and output load conditions. The internal MOSFET switches reduce the external component count and a high switching frequency allows the use of tiny surface mount components.

The AS1345 employ a factory set current limit to reduce ripple and external component size in low output current applications. With a 500mA current limit the AS1345 is capable of providing 20mA 18V output.

Figure AS1345 1 Available Products

Devices AS1345A AS1345B AS1345C AS1345D

Peak Coil Current 100mA 200mA 350mA 500mA

Output adjustable or fixed adjustable or fixed adjustable or fixed adjustable or fixed

Figure AS1345 2 Key Benefits and Features
For order related information, please refer to “Ordering Information” on page

Built-in safety features protect the internal switches and output components from fault conditions. Additional power-saving attributes include a very low quiescent current and a true shutdown mode.

Supports Lithium primary and re-chargeable batteries

Supports a variety of end applications

Features Input Voltage Range 2.9V to 5.0V Adjustable Output Voltage Range 5.0V to 18V
18V, High Efficiency, DC-DC Step-Up Converter

AS1345 1

Benefits Supports a variety of end applications Allows optimization of circuit depending on output power demands Battery life improved Battery supply isolated during shutdown Fault tolerant

Small chipscale package

Output Current up to 40mA

Inductor Peak Currents 100, 200, 350 and 500 mA
90% Efficiency True Shutdown Short Circuit and Thermal Protection Packages:
• 8-pin 2x2mm TDFN
• 8-bumps 1.570mm x 0.895mm WL-CSP with
0.4mm pitch

Figure AS1345 3 Typical Application Diagram

The AS1345 is ideal for small and low current demand LCD panels, as well as for polymer LEDs OLED , cell phones, PDAs, readers, mobile terminals and 3D shutter glasses.
10uF 10uH to 22uH

VDD = 2.9V to 5.0V

SWIN VDD

SWOUT LX
10uF 100k POK

AS1345
47pF FB

ON EN

Vout = 5.0V to 18V

R2 1uF to 10uF

AS1345 2
18V, High Efficiency, DC-DC Step-Up Converter

Pin Assignments

Figure AS1345 4 Pin Assignments Top View

VDD 1 EN 2 FB 3

AS1345

TDFN 8-pin 2x2mm Thermal pad GND
8 GND 7 LX 6 SWOUT

POK 4
5 SWIN 9

SWOUT

SWIN

Pin A1 indicator

Figure AS1345 5 Pin Descriptions

Pin Number TDFN WLP
Ordering Information
Figure AS1345 28 Ordering Information

The device is available as the standard products listed in the table below.

On request, all devices can be factory set to enable a 100kΩ pull-down resistor for the EN pin.
Ordering Code Marking ILIMIT

Output

Delivery Form

AS1345A-BWLT-AD
adjustable

AS1345A-BWLT-12
100mA

AS1345A-BWLT-15

AS1345A-BWLT-17

AS1345A-BTDT-AD
100mA adjustable
18V, High Efficiency

Tape and

AS1345B-BTDT-AD
200mA adjustable DCDC Step-up

Reel

Converter

AS1345C-BTDT-AD
350mA adjustable

AS1345D-BTDT-AD
500mA adjustable

AS1345D-BWLT-15
500mA

AS1345D-BWLT-17
500mA

Package
8-bumps 1.570x0.895m
m WL-CSP
8-pin 2x2mm TDFN
8-bumps 1.570x0.895m
m WL-CSP

All products are RoHS compliant and ams green. Buy our products or get free samples online at Technical Support is available at For further information and requests, e-mail us at
or find your local distributor at

AS1345 24
18V, High Efficiency, DC-DC Step-Up Converter

RoHS Compliant and ams Green Statement

The term RoHS complaint means that ams products fully comply with current RoHS directive. 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 means RoHS compliant and no Sb/Br . ams defines Green that additionally 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 and Disclaimer The information provided in this statement represents ams knowledge and belief as of the date that it is provided. ams 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 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 and ams suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
18V, High Efficiency, DC-DC Step-Up Converter

AS1345 25

Copyrights Disclaimer

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 AS1345D-BTDT-AD Datasheet file may be downloaded here without warranties.

Datasheet ID: AS1345D-BTDT-AD 519608