AS1330 austriamicrosystems, AS1330 Datasheet

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AS1330

Manufacturer Part Number
AS1330
Description
4mhz, Low Voltage, Dc-dc Step-up Converter
Manufacturer
austriamicrosystems
Datasheet
Datasheet
A S 1 3 3 0
4 M H z , L o w Vo l ta g e , D C - D C St e p - U p C o n v e r t e r
1 General Description
The AS1330 is a synchronous, low voltage, high
efficiency DC-DC boost converter running at a constant
frequency of 4MHz. This very high oscillator frequency
allows the usage of a very a small and low profile
inductor with only 470nH. This results in a board space
requirement of only 43mm² for the complete solutions
including all external components.
AS1330 generates an output voltage between 1.8 and
3.3V from input voltages down to 0.6V. Therefore it is
ideal for application powered by a single cell battery.
AS1330 provides an output current of 150mA @ 3.3V
from a single cell.
To support high efficiency across the entire load range
the AS1330 is equipped with a synchronous rectifier and
features a power save mode for light loads.
To avoid harmful deep discharge of the battery during
shutdown the AS1330 is equipped with an output
disconnect function.
AS1330 can either monitor the battery voltage (Sense
pin) or report the status of the output voltage (POK).
The AS1330 is available in a TDFN (2x2mm) 8-pin pack-
age.
www.austriamicrosystems.com/DC-DC_Step-Up/AS1330
Figure 1. AS1330 - Typical Application Diagram
AA Battery
On
Off
C1
VIN
EN
L1
AS1330-1.8
GND
SW
Revision 1.04
SENSE
2 Key Features
3 Applications
The AS1330 is ideal for space critical applications where
ultra-small size is critical as in medical diagnostic equip-
ment, hand-held instruments, digital cameras, MP3 play-
ers, GPS receivers, and PC or Memory cards.
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Input Voltage Range: 0.6V to 3.0V
Adjustable Output Voltage Range: 1.8V to 3.3V
Fixed Output Voltage: 1.8V, 3.0V
0.85V Low Start-Up Voltage
4MHz Fixed-Frequency
91% Efficiency
Delivers 150mA @ 3.3V (from Single AA Cell)
Automatic Powersave Operation for light Loads
Output Disconnect during Shutdown
Anti-Ringing Control minimizes EMI
Power Okay and Sense pin
TDFN (2x2mm) 8-pin Package
VOUT
POK
FB
C2
V
1.8V
OUT
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AS1330 Summary of contents

Page 1

... To avoid harmful deep discharge of the battery during shutdown the AS1330 is equipped with an output disconnect function. AS1330 can either monitor the battery voltage (Sense pin) or report the status of the output voltage (POK). The AS1330 is available in a TDFN (2x2mm) 8-pin pack- age. Figure 1. AS1330 - Typical Application Diagram AA Battery C1 ...

Page 2

... Note: An optional Schottky diode can be connected between this pin and V Output Voltage. Bias is derived from V 7 length from V VOUT practical. Input Voltage. The AS1330 gets its start-up bias from which case the bias is derived from VIN completely independent from V level and the internal series resistance of the supply ...

Page 3

... Table 2. Absolute Maximum Ratings Parameter All Pins to GND Operating Temperature Range Storage Temperature Range Latch-Up ESD Package Body Temperature www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 may cause permanent damage to the device. These are stress ratings only, Min Max Units -0 -40 +85 º ...

Page 4

... The POK parameters are tested with proprietary test modes. Note: All limits are guaranteed. The parameters with min and max values are guaranteed with production tests or SQC (Statistical Quality Control) methods. www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 = -40°C to +85ºC (unless otherwise specified). Typ AMB ...

Page 5

... Output Current (mA) Figure 7. Efficiency vs Coil Comparision OUT 100 0 Output Current (mA) www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 = +25ºC (unless otherwise specified); AMB = 1.8V Figure 4. Efficiency vs. Input Voltage, V OUT 100 Vin = 1.0V 40 Vin = 1.2V Vin = 1.5V 30 100 1000 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 = 3.0V Figure 6. Efficiency vs. Input Voltage, V ...

Page 6

... Input Voltage (V) Figure 13. Startup Voltage vs. Output Current 2.5 2.25 2 1.75 1.5 1.25 1 0.75 0.5 0. Output Current (mA) www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 Figure 10. I vs. V OUT 700 600 500 400 300 200 470nH EPL2010 100 1µH LQH 0 1.2 1.3 1.4 0.7 0.9 1.1 1.3 1.5 Figure 12 OUT 4 3.5 3 2.5 2 1 ...

Page 7

... Datasheet - Figure 15. Startup 3V 1mA OUT OUT 100µs/Div Figure 17. Load Transient OUT 100µs/Div www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 Figure 16. Shutdown 3V, I OUT 1ms/Div Figure 18. Load Transient OUT 100µs/Div Revision 1.04 = 1mA ...

Page 8

... Modern portable devices frequently spend extended time in low-power or standby modes, switching to high power- drain only when certain functions are enabled. The AS1330 is ideal for portable devices since it maintain high-power conversion efficiency over a wide output power range, thus increasing battery life in these types of devices. ...

Page 9

... Shutdown When pin EN is low the AS1330 is switched off and <1µA current is drawn from the battery; when pin EN is high the device is switched on driven from a logic-level output, the logic high-level (on) should be referenced to V avoid intermittently switching the device on. ...

Page 10

... GND programs the output voltage from 1.8 to 3.0V via pin FB as: OUT Sense Function The AS1330 offers a sense function for monitoring a voltage (e.g.: the battery voltage). The sense function can work in three different modes: - SENSE to GND: The POK is related SENSE to VIN: If the pin SENSE is directly connected to pin VIN, the internal reference voltage (0.8V) is used to compare it with V ...

Page 11

... On Off EN To power an output voltage of 3.3V with the AS1330 a schottky diode is requiered. In this setup the output disconnect function is no longer working because the schottky diode is bypassing the input to the output. Figure 22. AS1330 - Boost Converter, Single AA Cell to 3.3V adjustable Output Voltage AA Battery VIN C1 4.7µ ...

Page 12

... Datasheet - Smallest Layout Due to the high switching frequency, the small package and the minimal count of external components, the overall DC- DC system requieres only 6.6x6.6mm of PCB space Figure 23. Layout Consideration www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 (see Figure 23). Revision 1. ...

Page 13

... Note: Do not use ordinary rectifier diodes, since the slow recovery times will compromise efficiency. www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 . The high operating frequency and low peak currents of the AS1330 allow OUT ripple. Multi-layer ceramic capacitors are recommended since ...

Page 14

... Terminal #1 identifier and terminal numbering convention shall conform to JESD 95-1 SPP-012. Details of ter- minal #1 identifier are optional, but must be located within the area indicated. The terminal #1 identifier may be either a mold, embedded metal or mark feature. 6. Dimension b applies to metallized terminal and is measured between 0.15 and 0.30mm from terminal tip. www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 Max Symbol Min ...

Page 15

... AS1330-BTDT-30 AZ 3.0V Note: All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 Table 6. Descriptiom Up Converter 4MHz, Low Voltage, DC-DC Step- Up Converter 4MHz, Low Voltage, DC-DC Step- Up Converter http://www ...

Page 16

... No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 Fax: +43 (0) 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com/DC-DC_Step-Up/AS1330 Revision 1. ...

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