INTEGRATED CIRCUITS SA57005 Multiple output low noise, low dropout linear regulator Product data 2002 Jun 20 Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator SA57005 GENERAL DESCRIPTION The SA57005 is a very low dropout, low noise composite voltage regulator with three fixed independent outputs. The output voltages are preset to 2.5 V, 2.8 V and 3.0 V having a common input voltage pin VIN. Two ON/OFF switches allow Vo1 and Vo2/Vo3 to be turned off when not needed, thus conserving power. Also, three regulators in one package save board space, which is critical in microprocessor systems. Designed for battery-powered and portable applications the SA57005 achieves unequalled performance in all specifications such as low supply-current, low dropout voltage, low power consumption, small size, fast dynamic response to line and load, precision output and so on. Each of these regulators consists of an internal voltage reference, an error amplifier, resistors, and control switch. The SA57005 is housed in a VSOP-8A 8-lead package. FEATURES • Very low dropout voltage: APPLICATIONS • Cellular phones, cordless phones and 2-way radios • Electronic notebooks, PDAs and Palmtop computers • Cameras, VCRs and camcorders • Modems • Battery-powered or hand-held instruments Vo1: 0.25 V typ.; Vo2: 0.28 V typ.; Vo3: 0.30 V typ. • Low noise: 60 µVrms typ. (f = 10 Hz to 10 kHz; IO = 30 mA) • High precision output voltage: ±3% • Output current capacity: Io1 and Io2 = 100 mA max; Io3 = 150 mA max. • Low consumption current: IIN1 = 250 µA typ., IIN2/IIN3 = 500 µA typ. (when not loaded), 3 µA max. (when off) • Line regulation: 1%/V typ. (IOUT = 30 mA; VIN = 4.0 to 8.0 V) • Load regulation: 30 mV typ. for IOUT = 0 to 70 mA • Low temperature drift co-efficient to VOUT: ±100 ppm/°C • Thermal shutdown • Wide operating temperature range: –20 °C to +75 °C SIMPLIFIED DEVICE DIAGRAM 1 PS1 2 PS2/3 GND 8 Vo1 7 SA57005 3 NC Vo2 6 4 VIN Vo3 5 1Ω ≥1 µF 1 µF 1Ω 1 µF 1Ω 1 µF SL01698 Figure 1. Simplified device diagram. 2002 Jun 20 2 853-2352 28505 Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator SA57005 ORDERING INFORMATION PACKAGE TYPE NUMBER SA57005DH NAME DESCRIPTION TEMPERATURE RANGE VSOP-8A 8-pin surface mount small outline package –20 to +75 °C Part number marking Each device is marked with a four letter code on the first line. The first three letters designate the product. The fourth letter, represented by ‘x’ is a date tracking code. Any other lines contain manufacturing codes. PIN CONFIGURATION Part Number Marking SA57005DH AHXx PIN DESCRIPTION PIN PS1 1 8 GND PS2/3 2 7 Vo1 NC 3 6 Vo2 VIN 4 5 Vo3 SA57005 TOP VIEW SL01697 Figure 2. Pin configuration. SYMBOL DESCRIPTION 1 PS1 ON/OFF control for Vo1; tie to VIN if ON/OFF function is not used. 2 PS2/3 ON/OFF control for Vo2 and Vo3; tie to VIN if ON/OFF function is not used. 3 NC No connection 4 VIN Input voltage 5 Vo3 Regulated output 3 6 Vo2 Regulated output 2 7 Vo1 Regulated output 1 8 GND Ground MAXIMUM RATINGS SYMBOL PARAMETER CONDITIONS Min. Max. UNIT –0.3 +12 V VIN Supply voltage IO1, IO2 Output current 1, 2 – 100 mA IO3 Output current 3 – 150 mA Topr Operating ambient temperature range –20 +75 °C Tstg Storage temperature –40 +125 °C PD Power dissipation unmounted – 300 mW when mounted on glass epoxy board (40 × 40 × 1.6 mm) – 500 mW 2002 Jun 20 3 Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator SA57005 ELECTRICAL CHARACTERISTICS Tamb = 25 °C; VIN = 4 V; CIN = 2.2 µF; CVO(n) = 2.2 µF; unless otherwise specified. PARAMETER SYMBOL CONDITIONS IIN(OFF) Supply current (OFF) VPS1 = VPS2/3 = 0 V IIN1, IIN2, IIN3 Supply current 1, 2, 3 no load Min. Typ. Max. UNIT – 0 3 µA IIN1 VPS1 = 3 V; VPS2/3 = 0 V – 250 370 µA IIN2, IIN3 VPS2/3 = 3 V; VPS1 = 0 V – 500 740 µA Vo1 Vo1 Output voltage IO1 = 30 mA 2.42 2.50 2.58 V Vio(dif)(min)1 Input/output differential voltage VIN = 2.3 V; IO1 = 30 mA – 0.1 0.25 V ∆VLO1 Load regulation IO1 = 0 to 70 mA – 30 60 mV ∆VLI1 Line regulation VIN = 4.0 V to 8.0 V; IO1 = 30 mA – 10 25 mV ∆Vo1/∆T VO temperature coefficient (Note 1) Tamb = –20 °C to +75 °C; IO1 = 30 mA – ±100 – ppm/°C RR1 Ripple rejection (Note 1) f = 120 Hz; Vripple = 1 Vp-p; IO1 = 30 mA 50 60 – dB Vn1 Output noise voltage (Note 1) f = 10 Hz to 10 kHz; IO1 = 30 mA – 60 90 µVrms tDH1 Output delay time (Note 1) IO1 = 30 mA; VPS1 = 0 V → 4 V; VPS2/3 = 0 V – 0.04 0.15 ms Vo2 Output voltage IO2 = 30 mA 2.72 2.80 2.88 V Vio(dif)(min)2 Input/output differential voltage VIN = 2.6 V; IO2 = 30 mA – 0.1 0.25 V ∆VLO2 Load regulation IO2 = 0 to 70 mA – 30 60 mV ∆VLI2 Line regulation VIN = 4.0 V to 8.0 V; IO2 = 30 mA – 10 25 mV ∆Vo2/∆T VO temperature coefficient (Note 1) Tamb = –20 °C to +75 °C; IO2 = 30 mA – ±100 – ppm/°C RR2 Ripple rejection (Note 1) f = 120 Hz; Vripple = 1 Vp-p; IO2 = 30 mA 50 60 – dB Vn2 Output noise voltage (Note 1) f = 10 Hz to 10 kHz; IO2 = 30 mA – 60 90 µVrms tDH2 Output delay time (Note 1) IO2 = 30 mA; VPS2/3 = 0 V → 4 V; VPS1 = 0 V – 0.04 0.15 ms Vo3 Output voltage IO3 = 80 mA 2.92 3.00 3.08 V Vio(dif)(min)3 Input/output differential voltage VIN = 2.8 V; IO3 = 80 mA – 0.15 0.30 V ∆VLO3 Load regulation IO3 = 0 to 100 mA – 30 60 mV ∆VLI3 Line regulation VIN = 4.0 V to 8.0 V; IO3 = 30 mA – 10 25 mV ∆Vo3/∆T VO temperature coefficient (Note 1) Tamb = –20 °C to +75 °C; IO3 = 30 mA – ±100 – ppm/°C RR3 Ripple rejection (Note 1) f = 120 Hz; Vripple = 1 Vp-p; IO3 = 30 mA 50 60 – dB Vn3 Output noise voltage (Note 1) f = 10 Hz to 10 kHz; IO3 = 30 mA – 60 90 µVrms tDH3 Output delay time (Note 1) IO3 = 30 mA; VPS2/3 = 0 V → 4 V – 0.04 0.15 ms – – 0.4 V Vo2 Vo3 PS output control pin VOFF LOW-level threshold voltage VON HIGH-level threshold voltage 1.6 – – V IPS1 PS1 terminal current VPS1 = 1.6 V – – 8 µA IPS2/3 PS2/3 terminal current VPS2/3 = 1.6 V – – 16 µA NOTE: 1. Guaranteed by design. 2002 Jun 20 4 Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator SA57005 TYPICAL PERFORMANCE CURVES 250.0 20.0 LINE REGULATION (mV) INPUT–OUTPUT (mV) 200.0 150.0 100.0 10.0 0.0 –10.0 50.0 0.0 –20.0 0 50 100 4 150 6 8 OUTPUT CURRENT (mA) 10 12 VIN (V) SL01699 SL01700 Figure 3. Input-output differential voltage. Figure 4. Line regulation. 4.0 40.0 OUTPUT VOLTAGE (V) LOAD REGULATION (mV) 30.0 20.0 10.0 0.0 –10.0 3.0 2.0 1.0 –20.0 –30.0 0.0 –40.0 0 50 100 0 150 50 100 OUTPUT CURRENT (mA) 150 SL01703 SL01702 Figure 5. Load regulation. Figure 6. Thermal shutdown. 4.0 100 EQUIVALENT SERIES RESISTANCE (Ω ) OUTPUT VOLTAGE (V) 200 TEMPERATURE (°C) 3.0 2.0 1.0 0.0 UNSTABLE 10 STABLE 1 0.1 UNSTABLE 0.01 0 100 200 0 300 OUTPUT CURRENT (mA) 50 100 SL01701 SL01708 Figure 7. Current limit. 2002 Jun 20 150 LOAD CURRENT (mA) Figure 8. ESR stability. 5 Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator 800 POWER DISSIPATION (mW) 700 ON BOARD (40 × 40 × 1.6 mm) 600 500 400 300 200 ALONE 100 0 0 50 100 150 TEMPERATURE (°C) SL01704 Figure 9. Power dissipation. 2002 Jun 20 6 SA57005 Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator The reference is connected to the error amplifier’s non-inverting input. The error amplifier compares the reference with the feedback voltage and amplifies the difference. If the feedback voltage is lower than the reference voltage the output of the error amplifier goes up, which pulls down the pass transistor’s gate. This allows more current to pass to the output and increase the output voltage. On the other hand, if the feedback voltage is too high the pass transistor gate is pulled up, allowing less current to pass to the output, resulting a decrease in output voltage. TECHNICAL DISCUSSION As illustrated in the circuit diagram, each of the regulators in the SA57005 consists of a voltage reference, an error amplifier, P-channel pass transistor, current limit circuit and an internal feedback voltage divider. The output voltage is fed back through an internal resistor voltage divider connected to the output voltage pins. The reference will be activated if any of the PS1 and PS2/3 switches is turned on. VIN 4 SA57005 PS1 1 7 Vo1 TERMINAL PROTECT 6 Vo2 PS2/3 2 5 Vo3 8 GND SL01705 Figure 10. Functional diagram. 2002 Jun 20 7 Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator SA57005 APPLICATION INFORMATION For good performance, the following points must be considered: PS (Chip Enable) pins These active-HIGH ON/OFF pins must be actively terminated. If the function is not to be used, the corresponding PS pin should be tied to VIN. PS1 (pin 1) controls Vo1 while PS2/3 (pin 2) controls Vo2 and Vo3 simultaneously. In other words Vo2 and Vo3 are always in the same state, either both active or both inactive depending on the input of PS2/3. Input capacitor An input capacitor of ≥1 µF is required between the SA57005 input and the ground (the amount of capacitance may be increased without limit). This capacitor must be located as close as possible to VIN or GND pin (not more than 1 cm) and returned to a clean analog ground. Any good quality ceramic, tantalum or film capacitor will work. Line impedance of VIN and GND The VIN and GND lines should be sufficiently wide. Otherwise when the impedance of these lines is high, there is a chance to pick-up noise or malfunction. Output capacitor Phase compensation is made for securing stable operation even if the load current varies. For this reason, an output capacitor with good frequency characteristics is needed at each of the three outputs. Set it as close to the circuit as possible and make the wiring as short as possible. The value of the output capacitance has to be at least 1µF. Also it must have the ESR (Equivalent Series Resistance) value within the stable range shown Figure 8. 1 µF 1 µF 1 µF 1Ω 1Ω 1Ω Vo1 Vo2 Vo3 8 7 6 5 GND Vo1 Vo2 Vo3 SA57005 PS1 PS2/3 NC VIN 1 2 3 4 1 µF VIN SL01706 Figure 11. Typical application circuit. 2002 Jun 20 8 Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator SA57005 TEST CIRCUIT IO1 IO2 8 7 6 5 GND Vo1 Vo2 Vo3 IO3 SA57005 PS1 PS2/3 NC VIN 1 2 3 4 VPS1 VPS2/3 VIN SL01707 Figure 12. Test circuit. PACKING METHOD GUARD BAND TAPE REEL ASSEMBLY TAPE DETAIL COVER TAPE CARRIER TAPE BARCODE LABEL BOX SL01305 Figure 13. Tape and reel packing method. 2002 Jun 20 9 Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator SA57005 VSOP-8A: plastic small outline package; 8 leads; body width 4.4 mm A 1.35 1.15 1.15 0.23 0.21 0.16 0.10 3.4 2.8 4.6 4.2 6.7 6.1 VSOP-8A 2002 Jun 20 10 0.7 0.3 0.12 0.875 max. 10° 0° Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator NOTES 2002 Jun 20 11 SA57005 Philips Semiconductors Product data Multiple output low noise, low dropout linear regulator SA57005 Data sheet status Data sheet status [1] Product status [2] Definitions Objective data Development This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. Preliminary data Qualification This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. Product data Production This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Changes will be communicated according to the Customer Product/Process Change Notification (CPCN) procedure SNW-SQ-650A. [1] Please consult the most recently issued data sheet before initiating or completing a design. [2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com. Definitions Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Disclaimers Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Koninklijke Philips Electronics N.V. 2002 All rights reserved. Printed in U.S.A. Contact information For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825 Date of release: 08-02 For sales offices addresses send e-mail to: [email protected]. Document order number: 2002 Jun 20 12 9397 750 10161