AS1301_1 AMSCO [austriamicrosystems AG], AS1301_1 Datasheet

AS1301_1

Manufacturer Part Number

AS1301_1

Description

5V/50mA Low Noise Inductorless Boost Converter

Manufacturer

AMSCO [austriamicrosystems AG]

Datasheet

1.AS1301_1.pdf (16 pages)

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A S 1 3 0 1

5 V / 5 0 m A L o w N o i s e I n d u c t o r l e s s B o o s t C o n v e r t e r

1 General Description

The AS1301 is a 50mA inductorless boost converter

using a double H-bridge charge-pump topology with two

external flying capacitors.

The AS1301 runs on a 1MHz fixed frequency and is

utilized with a low noise regulation scheme to allow

usage together with sensitive RF circuitry from the same

battery supply.

Designed to reside in portable and space limited

equipment the 1MHz charge pump converts a 2.7 to

5.25V input to regulated 5V output with 5% accuracy.

The shutdown function reduces the supply current to

<5µA and disconnects the load from the output. The

integrated soft-start circuitry prevents current spikes

being drawn from the battery during start-up.

The AS1301 is available in TDFN (3x3x0.8mm) 10-pin

and WL-CSP 8-bumps packages.

www.austriamicrosystems.com

Figure 1. Typical Application Diagram

BATT

Off

2.2µF

BAT

VBATT

C1+

FLY1

Revision 1.03

AS1301

C1-

2 Key Features

3 Applications

The device is ideal for two or three AA cells or a single

Li-Ion battery cell to 5V conversion, mobile phones,

portable instruments, microprocessor based systems

and remote data-acquisition systems.

C2+

FLY2

- 1:1 Battery Feed Through Mode

- 2:3 Single Phase Mode

- 1:2 Dual Phase Mode

- TDFN (3x3x0.8mm) 10-pin

- WL-CSP 8-bumps with 0.5mm pitch

Up to 92% Efficiency

2.7 to 5.25V Input Voltage

Regulated 5V Output

Automatic Mode Up-Switching

<5µA Shutdown Current

5V Tolerant Enable Signal

Up to 50mA Load Current

Overload Protection

Output Disconnected During Shutdown

Soft-Start

No Inductor Required

Small External Components Required

Low Noise Fixed Frequency 1MHz Charge Pump:

Package Options:

OUT

C2-

≤2.2µF, C

VOUT

GND

FLY

≤220nF)

2.2µF

OUT

= 5V

D a t a S h e e t

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Related parts for AS1301_1

AS1301_1 Summary of contents

Page 1

...

Page 2

AS1301 Data Sheet - Pin Assignments Figure 2. Pin Assignments (Through View) C2+ 1 VOUT TDFN (3x3x0.8mm) 10-pin ...

Page 3

AS1301 Data Sheet - Absolute Maximum Ratings Stresses beyond those listed in Table 2 and functional operation ...

Page 4

AS1301 Data Sheet - Electrical Characteristics V = 2.7 to 5.25V 5V, ...

Page 5

AS1301 Data Sheet - Typical Operating Characteristics V = ...

Page 6

AS1301 Data Sheet - Figure 9. Output Voltage vs. Output ...

Page 7

AS1301 Data Sheet - Figure 15. Efficiency vs. Output Current; ...

Page 8

AS1301 Data Sheet - Figure 21. Load Transient ...

Page 9

AS1301 Data Sheet - Detailed Description Operating Principle Functional Description The AS1301 is a high efficiency and low noise switched ...

Page 10

AS1301 Data Sheet - Switch Configuration The AS1301 has nine built-in power switches in the shape of two coupled H-bridge topologies. ...

Page 11

AS1301 Data Sheet - Overload Protection When the output voltage drops significantly below battery voltage due to a very high load ...

Page 12

AS1301 Data Sheet - Application Information External Component Selection The high internal oscillator frequency of 1MHz permits ...

Page 13

AS1301 Data Sheet - Package Drawings and Markings The device is available in ...

Page 14

AS1301 Data Sheet - Figure 30. WL-CSP 8-bumps Package Diagram www.austriamicrosystems.com Revision 1.03 250 ...

Page 15

AS1301 Data Sheet - Ordering Information Table 7. Ordering Information Part Marking 5V/50mA Low Noise Inductorless Boost AS1301A-BWLT ASO4 5V/50mA ...

Page 16

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