AS1357 D a ta S he e t P r o g r a m m a b l e Tr i p l e L D O 1 General Description 2 Key Features ! 3 Independent Voltage Regulators with Shutdown ! Output Current: 200mA each LDO ! One Time Programmable Output Voltage (User- or Factory-Trimmed) ! Programmable Output Voltage Range: 1.8 to 3.3V in 0.1V Steps ! Accuracy: ±1.5% ! PSRR: 70dB at 1kHz, 40dB at 100kHz ! Line Regulation: ±2mV ! Load Regulation: ±0.6mV ! Supply Range: 3 to 5.5V ! 0.2V Dropout Voltage @ I = 200mA ! Shutdown Current: ≤1µA ! Supply Current Without Load: 175µA (typ) ! Softstart for Low Inrush Current Regulation performance is excellent even under low dropout conditions, when the power transistor has to operate in linear mode. ! Stable with low ESR Ceramic Capacitors from 1 to 4.7µF ! Low Noise: 40µV rms @10Hz to 100kHz Bandwidth The low-noise performance allows direct connection of noise sensitive circuits without additional filtering networks. ! Thermal Protection ! Over-Current Protection ! Temperature Range: -40 to +85°C ! Package Types: 12-pin QFN 4x4 and 16-pin QFN 3x3 The AS1357 is a high-performance triple CMOS lowdropout voltage regulator in a single QFN package. The efficient set of programmable power supplies is optimized to deliver the best compromise between quiescent current and regulator performance for mobile phones, PDAs, MP3 players, and other battery powered devices. The one-time-programmable (OTP) function provides greater design flexibility by allowing for independent programming of the output voltage for each regulator onsite. The OTP function allows for fast prototyping reducing development times and costs significant. Factory trimmed versions for full-production are also available. Stability is guaranteed with ceramic output capacitors of only 1µF (±20% – X5R) up to 4.7µF (±20% – X5R). The low equivalent series resistance (ESR) of these capacitors ensures low output impedance at high frequencies. The AS1357 is available in a 12-pin QFN 4x4 or 16-pin QFN 3x3 package. 3 Applications The AS1357 is ideal for cordless and mobile phones, MP3 players, CD and DVD players, PDAs, handheld computers, digital cameras, and any other hand-held battery-powered device. Figure 1. Pinout Assignments (Top View) EN2 EN3 N/C REF EN2 EN3 N/C REF 12 11 10 16 15 14 13 9 1 AS1357 EN1 VDD 12-pin QFN 4x4 2 8 3 7 4 5 6 VOUT1 VOUT2 VOUT3 www.austriamicrosystems.com EN1 1 VDD 2 VDD 3 VDD 4 12 GND GND 11 GND AS1357 16-pin QFN 3x3 VDD 10 VDD N/C 13 GND (Exposed Pad) Revision 1.07 9 5 6 7 VOUT1 VOUT2 VOUT3 VDD 8 N/C 1 - 10 AS1357 Data Sheet - Pinout 4 Pinout Pin Assignments Figure 2. Pin Assignments (Top View – Not To Scale) EN2 EN3 N/C REF EN2 EN3 N/C REF 12 11 10 16 15 14 13 1 9 EN1 VDD 2 8 7 3 4 5 6 VOUT1 VOUT2 VOUT3 1 VDD 2 12 GND GND AS1357 12-pin QFN 4x4 EN1 VDD VDD 3 VDD 4 11 GND AS1357 16-pin QFN 3x3 10 VDD N/C 13 GND 9 6 5 (Exposed Pad) 7 VOUT1 VOUT2 VOUT3 VDD 8 N/C Pin Descriptions Table 1. Pin Descriptions 12-pin QFN 4x4 16-pin QFN 3x3 Pin Number Pin Number Pin Name Description 2 1 EN1 VOUT1 Digital Input Enable 1 16 EN2 VOUT2 Digital Input Enable 12 15 EN3 VOUT3 Digital Input Enable 9 11, 12 GND Negative Supply Voltage. Note: All GND pins must be connected together externally. 13 - GND Negative Supply Voltage. This pin is the exposed pad. Note: All GND pins must be connected together externally. 10 13 REF Analog Reference Voltage. Note: Connect to 100nF capacitor during normal operation. 3, 8 2, 3, 4, 9, 10 VDD Positive Supply Voltage. Note: All VDD pins must be connected together externally. 4 5 VOUT1 Regulated Analog Output Voltage 1 5 6 VOUT2 Regulated Analog Output Voltage 2 6 7 VOUT3 Regulated Analog Output Voltage 3 7,11 8, 14 N/C www.austriamicrosystems.com Not connected. Revision 1.07 2 - 10 AS1357 Data Sheet - Absolute Maximum Ratings 5 Absolute Maximum Ratings Stresses beyond those listed in Table 3 may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 2. Absolute Maximum Ratings Parameter Min Max Units VDD to GND -0.3 7 V Any other pin to GND -0.3 VDD + 0.3 V Continuous Power Dissipation QFN12 4x4mm 1100 2800 mW Min value measured at TAMB = 85°C; max value measured at TAMB = 25°C. 260 °C The reflow peak soldering temperature (body temperature) specified is in accordance with IPC/JEDEC J-STD-020C “Moisture/Reflow Sensitivity Classification for non-hermetic Solid State Surface Mount Devices”. Package-Body Peak Temperature Operating Temperature -40 85 °C Storage Temperature -65 150 °C Electrostatic Discharge Protection (ESD) Level 1 www.austriamicrosystems.com kV Revision 1.07 Comments HBM – Norm: MIL 883 E method 3015. 3 - 10 AS1357 Data Sheet - Electrical Characteristics 6 Electrical Characteristics VDD = 4V; TAMB = -40 to +85°C (Typ values are for TAMB = 25°C); CLOAD = 1µF (Ceramic); unless otherwise specified. Table 3. Electrical Characteristics Symbol Parameter VDD Supply Voltage Range VOUT Output Voltage Range RON On Resistance PSRR 1 Power Supply Rejection Ratio f = 1kHz, CREF = 100nF 70 f = 100kHz, CREF = 100nF 40 IOFF Shut Down Current ENx = Low IVDD Supply Current Without Load tset 1 Output Voltage Settling Time tstart 1 Start-up Time 2 VOUT Output Voltage Tolerance VLINEREG Line Regulation, Static VLOADREG Load Regulation, Static VIH Enable Input Voltage High VIL Enable Input Voltage Low ILOAD Output Current ILIMIT Output Current Limitation VNoise Output Noise Voltage Conditions Min Typ Max Unit 3 5.5 V 1.8 3.3 V 1 Ω dB 1 µA 275 µA ILOAD Switched from 0 to 100mA 50 µs CREF = 100nF Pre-charged 300 µs 175 CREF = 0nF Uncharged 300 µs CREF = 100nF Uncharged 15 ms ILOAD = 0mA, TAMB = 25°C -1.5 1.5 % ILOAD = 0 to 200mA -2 2 % VDD = 5.5V -1 1 % VDD = 3 to 4.5V -2 2 mV 1 ILOAD = 0 to 50 mA 0.3 2.5 mV 1 ILOAD = 0 to 200 mA (referenced to 100mA) 0.6 5 mV 1 0.6 x VDD V 0 10 to 100kHz, CREF = 100nF Thermal Protection 0.8 V 200 mA 400 mA 40 µVRMS 145 °C Notes: 1. Guaranteed by design and verified by lab evaluation. 2. Startup is performed if any EN pin goes high. www.austriamicrosystems.com Revision 1.07 4 - 10 AS1357 Data Sheet - Ty p i c a l A p p l i c a t i o n 7 Typical Application Figure 3. Typical AS1357_uxy Application VDD VOUT1 3V 2.8V VPERI 1µF ±20% (X5R) 2.2µF +100/-50% (Z5U) VOUT2 CMOS Sensor 2.5V VCORE 1µF ±20% (X5R) 2.2µF +100/-50% (Z5U) VOUT3 2.8V VPERI 1µF ±20% (X5R) 2.2µF +100/-50% (Z5U) EN1 Microprocessor EN2 Microprocessor EN3 AS1357_A7A REF 100nF (Improved Noise Performance) GND GND One-Time Programming Procedure Output Voltages The three LDOs can be programmed and burned to any output voltage between 1.8 and 3.3V in steps of 0.1V. Customers can burn the desired output voltages onsite using the austriamicrosystems programming board. Furthermore, the AS1357 is available in pre-programmed versions with fixed output voltages (see Ordering Information on page 9.) www.austriamicrosystems.com Revision 1.07 5 - 10 AS1357 Data Sheet - Ty p i c a l A p p l i c a t i o n Figure 4. AS1357 Block Diagram VDD VOUT1 Thermal Protection Overcurrent Protection Softstart VREF EN1 Control VOUT2 Thermal Protection Overcurrent Protection Softstart VREF EN2 Control VDD VOUT3 Thermal Protection Overcurrent Protection Softstart VREF EN3 Control Reference Voltage GND www.austriamicrosystems.com REF AS1357 Revision 1.07 6 - 10 AS1357 Data Sheet - Package Drawings and Markings 8 Package Drawings and Markings The AS1357 is available in a 12-pin QFN 4x4 package and a 16-pin QFN 3x3 package. Figure 5. 12-pin QFN 4x4 and 16-pin QFN 3x3 Packages D2 -A- D D2/2 D/2 Index Area (D/2 xE/2) -B- -B- aaa C 2x E See Detail B E2 E2/2 e E/2 NXL 4 2 1 Pin 1 Marker aaa C 2x 4 SEE Detail B NXb -A- N N-1 6 Index Area (D/2 xE/2) 5 bbb ddd C A B C Bottom View Top View 11 0.08 C NX Seating Plane Side View Datum A or B Datum A or B 12 12 e Even Terminal Side L1 L1 e/2 -C- A3 9 A1 8 A ccc C Terminal Tip e Terminal Tip 5 5 Detail B Odd Terminal Side Notes: 1. Dimensioning and tolerancing conform to ASME Y14.5M-1994. 2. All dimensions are in millimeters; angles in degrees. www.austriamicrosystems.com Revision 1.07 7 - 10 AS1357 Data Sheet 3. N is the total number of terminals. 4. The terminal #1 identifier and terminal numbering convention shall conform to JEDEC 95 SPP-012. Details of terminal #1 identifier are optional but must be located within the zone indicated. The terminal #1 identifier may be either a mold or marked feature. 5. Dimension b applies to metallized terminal and is measured between 0.15 and 0.30mm from terminal tip. If one end of the terminal has the optional radius, the b dimension should not be measured in that radius area. 6. Dimensions ND and NE refer to the number of terminals on each D and E side, respectively. 7. Depopulation is possible in a symmetrical fashion. 8. Figure 5 is shown for illustration only and does not represent any specific variation. 9. All variations may be constructed per Figure 5, however variations may alternately be constructed between square or rectangle shape per dimensions D and E. 10. Refer to the Dimensions Table for a complete set of dimensions. 11. Bilateral coplanarity zone applies to the exposed heat sink slug as well as the terminals. 12. Depending on the method of lead termination at the edge of the package, pullback (L1) may be present. L minus L1 to be ≥ 0.33mm. 13. For variations with more than one lead count for a given body size and terminal pitch, each lead count for that variation is denoted by a dash number (e.g., -1 or -2). 16-pin QFN 3x3 Dimensions Symbol Min aaa Nom Max 0.15 12-pin QFN 4x4 Dimensions Notes Symbol 1, 2 aaa Min Nom 0.15 Max Notes 1, 2 bbb 0.10 1, 2 bbb 0.10 1, 2 ccc 0.10 1, 2 ccc 0.10 1, 2 ddd b 0.05 0.18 e 0.25 1, 2 ddd 0.30 1, 2 b 0.50 0.05 0.25 e 0.30 1, 2 0.35 1, 2 0.80 A 0.80 0.90 1.00 1, 2 A 0.80 0.90 1.00 1, 2 A1 0.00 0.02 0.05 1, 2 A1 0.00 0.02 0.05 1, 2 0.20 REF A3 L1 0.03 1, 2 0.15 0.20 REF A3 0.03 1, 2 1, 2 L1 D BSC 3.00 1, 2, 10 D BSC 4.00 0.15 1, 2, 10 1, 2 E BSC 3.00 1, 2, 10 E BSC 4.00 1, 2, 10 D2 1.30 1.45 1.55 1, 2, 10 D2 2.00 2.15 2.25 1, 2, 10 E2 1.30 1.45 1.55 1, 2, 10 E2 2.00 2.15 2.25 1, 2, 10 L 0.30 0.40 0.50 1, 2, 10 L 0.45 0.55 0.65 1, 2, 10 N 16 1, 2, 10 N 12 1, 2, 10 ND 4 1, 2, 10 ND 3 1, 2, 10 NE 4 1, 2, 10 NE 3 1, 2, 10 www.austriamicrosystems.com Revision 1.07 8 - 10 AS1357 Data Sheet 9 Ordering Information The AS1357 is available with preset LDO output voltages or customer-specific versions (with a minimum order quantity of 30,000). Each customer-specific device is factory trimmed to the desired output voltage (see Table 9). Table 4. Ordering Information Part LDO Values AS1357-T AS1357 AS1357V-T 2 Delivery Form Package User-programmable LDO values 1 Tape and Reel 12-pin QFN 4x4 User-programmable LDO values 1 Tray 12-pin QFN 4x4 Tape and Reel 16-pin QFN 3x3 User-programmable LDO values 1 2 1 Tray 16-pin QFN 3x3 AS1357_A7A-T VOUT1 = 2.8V, VOUT2 = 2.5V, VOUT3 = 2.8V Tape and Reel 12-pin QFN 4x4 AS1357_uxy-T 3, 4 Customer-specific LDO values --- 12-pin QFN 4x4 AS1357V_uxy-T 2, 3, 4 Customer-specific LDO values --- 16-pin QFN 3x3 AS1357V User-programmable LDO values 1. The values are programmed via the AS1352/57 programming board. 2. Available upon request. Contact austriamicrosystems, AG for more information. 3. Customer-specific values are as follows: u = Customer-specific VOUT1 value suffix. x = Customer-specific VOUT2 value suffix. y = Customer-specific VOUT3 value suffix. 4. “-T” suffix for tape and reel, no suffix for tray delivery form. Table 5. Output Voltages Suffix Guide Part AS1357_uxy Suffix Output Voltage F 3.3 V E 3.2 V D 3.1 V C 3.0 V B 2.9 V A 2.8 V 9 2.7 V 8 2.6 V 7 2.5 V 6 2.4 V 5 2.3 V 4 2.2 V 3 2.1 V 2 2.0 V 1 1.9 V 0 1.8 V www.austriamicrosystems.com Revision 1.07 9 - 10 AS1357 Data Sheet - Ordering Information 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. All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. 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 A-8141 Schloss Premstaetten, 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 Revision 1.07 10 - 10