AS1345 Datasheet, PDF (1/29 Pages) ams AG – 18V, High Efficiency, DC-DC Step-Up Converter

General Description
Figure 1:
Available Products
Devices
AS1345A
AS1345B
AS1345C
AS1345D
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.
Peak Coil Current
100mA
200mA
350mA
500mA
Output
adjustable or fixed
adjustable or fixed
adjustable or fixed
adjustable or fixed
For order related information, please refer to “Ordering &
Contact Information” on page 26.
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.
For further understanding in regards to the contents of the
datasheet, please refer to the Reference Guide located at the end
of the document.
ams Datasheet, Confidential: 2013-Nov [1-51]
AS1345 – 1