AS1340 austriamicrosystems AG, AS1340 Datasheet
AS1340
Manufacturer Part Number
AS1340
Description
DC-DC Boost Converter
Manufacturer
austriamicrosystems AG
Datasheet
1.AS1340.pdf
(2 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AS1340A-BTDT-10
Manufacturer:
AMS
Quantity:
20 000
www.datasheet4u.com
A S 1 3 4 0
5 0 V, M i c r o p o w e r, D C - D C B o o s t C o n v e r t e r
1 General Description
The AS1340 boost converter contains a 1.4A internal
switch in a tiny TDFN-8 3x3mm package. The device
operates from a 2.7 to 5.5V supply, and can boost volt-
ages up to 50V output.
The output voltage can easily be adjusted by an external
resistor divider.
The AS1340 uses a unique control scheme providing
the highest efficiency over a wide range of load condi-
tions. An internal 1.4A MOSFET reduces external com-
ponent count, and a fixed high switching frequency
(1MHz) allows for tiny surface-mount components.
The AS1340 also features power-OK circuitry which
monitors the output voltage.
Additionally the AS1340 features a low quiescent supply
current and a shutdown mode to save power. During
shutdown an output disconnect switch separates the
input from the output.
The AS1340 is ideal for LCD or OLED panels with low
current requirements and can also be used in a wide
range of other applications.
The device is available in a low-profile TDFN-8 3x3mm
package.
www.austriamicrosystems.com
Figure 1. Typical Application Diagram
C
If not needed the output disconnect switch can be left unconnected which will also increase the efficiency.
Additionally the supply of the chip can be split to allow higher supply voltages for the coil. In this case the output disconnect switch must not be used.
V
Off
IN
On
IN
to 5.5V
= 2.7V
SHDNN
POK
V
CC
2
1
4
SWVIN
AS1340
3
6
SWOUT
4.7µH
L
1
5
LX
8
FB
7, 9
GND
V
Revision 1.01
OUT
R
R
1
2
= >V
IN
2 Key Features
3 Applications
The device is ideal for OLED display power supply, LCD
bias generators, mobile/cordless phones, palmtop com-
puters, PDAs and organizers, handy terminals or any
other portable, battery-powered device.
to 50V
!
!
!
!
!
!
!
!
!
!
!
C
OUT
- 100mA @ 12V from 3.3V V
- 50mA @ 24V from 3.3V V
- 30mA @ 36V from 3.3V V
2.7V to 50V Adjustable Output Voltage
2.7V to 50V Input Voltage Range
2.7V to 5.5V Supply Voltage Range
High Output Currents:
Efficiency: Up to 90%
Switching Frequency: 1MHz
Output Disconnect
Power-OK Output
Operating Supply Current: 30µA
Shutdown Current: 0.1µA
TDFN-8 3x3mm Package
V
V
V
IN
to 5.5V
to ~V
IN
to 5.5V
IN
= 2.7V
= 2.7V
= 2.7V
OUT
VCC
VCC
3
3
IN
IN
L
L
IN
1
1
6
6
LX
LX
P r o d u c t B r i e f
V
V
OUT
OUT
1 - 2
Related parts for AS1340
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
16-Channel LED Driver
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
Interfaced LED Driver
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
Single/Dual LVDS Driver
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
5V/50mA Low Noise Inductorless Boost Converter
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
DC-DC Step-Up Converters
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
650mA Step-Down DC-DC Converter
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
650mA Ultra low Ripple Step Down DC/DC Converter
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
Step-Down Converter
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
DC-DC Boost Converter
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
(AS1353 / AS1356) Linear Low-Dropout 150mA Voltage Regulators
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
(AS1358 / AS1359) High-PSRR Low Dropout Regulators
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
Positive Voltage Regulator
Manufacturer:
austriamicrosystems AG
Datasheet:
Part Number:
Description:
(AS1361 / AS1362) High-PSRR Low Dropout Regulators
Manufacturer:
austriamicrosystems AG
Datasheet:
AS1340 Summary of contents
Page 1
... During shutdown an output disconnect switch separates the input from the output. The AS1340 is ideal for LCD or OLED panels with low current requirements and can also be used in a wide range of other applications. The device is available in a low-profile TDFN-8 3x3mm package ...
Page 2
... AS1340 Product Brief 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, translated, stored, or used without the prior written consent of the copyright owner. www.datasheet4u.com All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...