AP7363-25

AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Description The AP7363 is a 1.5A adjustable output voltage linear regulator with ultra-low dropout. The device includes pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. The characteristics of low dropout voltage and fast transient response to step changes in load make it suitable for low voltage microprocessor applications. The typical quiescent current is approximately 0.5mA and changes little with load current. The built-in current-limit and thermal-shutdown functions prevent IC from damage in fault conditions. This device is available in U-DFN2030-8, SO-8EP and SOT223-3L packages. Pin Assignments ( Top View ) ADJ/NC OUTOUT OUT 8 7 6 5 N EW PRODUCT 1 2 3 4 GND IN IN IN U-DFN2030-8 (Top View ) GND IN IN IN 1 2 3 4 8 7 6 5 ADJ/NC OUT OUT OUT Features • • • • • • • • • • • • • • • 1.5A ultra-low dropout linear regulator Ultra-low dropout: 190mV at 1.5A Stable with 10µF input/output capacitor, any types Wide input voltage range: 2.7V to 5.5V Adjustable output voltage: 0.6V to 5.0V Fixed output options: 1V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V Low ground pin current 25nA quiescent current in shutdown mode VADJ accuracy of ±1.5% @ 25°C VADJ accuracy of ±3% over line, load and temperature Excellent Load/Line Transient Response Current limit and thermal shutdown protection Ambient temperature range: -40ºC to 85ºC U-DFN2030-8, SO-8EP, SOT223-3L: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1) SO-8EP (Top View) 3 2 1 OUT GND (TAB) IN SOT223-3L (Fixed output) Applications • • • • ASIC power supplies in printers, graphics cards, DVD players, STBs, routers, etc FPGA and DSP core or I/O power supplies SMPS regulator Conversion from 3.3Vor 5V rail 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. Notes: AP7363 Document number: DS35059 Rev. 2 - 2 1 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Typical Application Circuit N EW PRODUCT ⎛ R⎞ VOUT = VREF ⎜1 + 1 ⎟ where R 2 ≤ 10kΩ ⎜ R2 ⎟ ⎠ ⎝ Pin Descriptions Pin Name GND IN OUT ADJ NC EP/TAB Pin Number 1 2, 3, 4 5, 6, 7 8 8 -Description Ground. Voltage input pin. Voltage output pin. Output feedback pin for adjustable version only – a resistor divider from this pin to the OUT pin and ground sets the output voltage. No connection for fixed output version. The exposed pad (EP) is used to remove heat from the package and it is recommended that it is connected to a copper area. The die is electrically connected to the exposed pad. It is recommended to connect it externally to GND, but should not be the only ground connection. Functional Block Diagram IN Current Limit and Thermal Shutdown OUT IN Current Limit and Thermal Shutdown OUT Gate Driver EN R EN Gate Driver ADJ 0 .605V R 0.605V GND GND Fixed Version Adjustable Version AP7363 Document number: DS35059 Rev. 2 - 2 2 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Absolute Maximum Ratings (Note 2) Symbol ESD HBM ESD MM VIN VOUT IOUT Parameter Human Body Model ESD Protection Machine Model ESD Protection Input Voltage OUT Voltage Continuous Load Current Storage Temperature Range Maximum Junction Temperature Ratings 2000 200 -0.3 to 6.0 -0.3V to VIN + 0.3 Internal Limited -65 to 150 150 °C °C Unit V V V V N EW PRODUCT TST TJ Notes: 2. Stresses beyond those listed under Absolute Maximum Ratings 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 is not implied. Exposure to absolute-maximum rated conditions for extended periods may affect device reliability. Recommended Operating Conditions Symbol VIN IOUT TA TJ Notes: Parameter Input voltage Output Current Operating Ambient Temperature Operating Junction Temperature (Note 3) Min 2.7 0 -40 -40 Max 5.5 1.5 85 125 Unit V A °C °C 3. Operating junction temperature must be evaluated and derated as needed, based on ambient temperature (TA), power dissipation (PD), maximum allowable operating junction temperature (TJ-MAX), and package thermal resistance (θJA). AP7363 Document number: DS35059 Rev. 2 - 2 3 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Electrical Characteristics TA = 25 C, VIN = 3.3V, VOUT =1.8V, IOUT = 10mA, CIN = 10μF, COUT = 10μF, unless otherwise stated. Minimum and maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely o parametric norm at TA = 25 C, and are provided for reference purposes only. o Symbol VADJ VADJ Parameter ADJ Pin Voltage ADJ Pin Voltage (A Grade) ADJ Pin Bias Current Dropout Voltage (Note 4) Line Regulation (Note 5) N EW PRODUCT IADJ VDropout ΔVOUT /ΔVIN ΔVOUT /ΔIOUT Load Regulation (Note 5) IGND IOUT-PK ISC td(off) td(on) PSRR ρn(l/f) en TSHDN THYS θJA Ground Pin Current in Normal Operation Mode Peak Output Current Short Circuit Current Turn-off delay Turn-on delay Ripple Rejection Output Noise Density Output Noise Voltage Thermal shutdown threshold Thermal shutdown hysteresis Thermal Resistance Junction-toAmbient Thermal Resistance Junction-toCase θJC Notes: Test Conditions TA = 25oC Over temp TA = 25oC Over temp TA = 25oC VIN = VIN-Min to VIN-Max Over temp TA = 25oC IOUT = 1.5A, VOUT = 2.5V Over temp TA = 25oC VIN = VIN-Min to VIN-Max Over temp TA = 25oC IOUT = 10mA to 1.5A Over temp TA = 25oC IOUT = 10mA to 1.5A Over temp VOUT ≥ VOUT-NOM -5% o TA = 25 C OUT grounded Over temp From VEN < VIL to VOUT = OFF, IOUT = 1.5A From VEN > VIH to VOUT = ON, IOUT = 1.5A VIN = 3.0V, IOUT = 1.5A, f = 120Hz VIN = 3.0V, IOUT = 1.5A, f = 1kHz F = 120Hz, COUT = 10μF ceramic BW = 100Hz – 100kHz, COUT = 10μF ceramic TJ rising TJ falling from TSHDN U-DFN2030-8-8 (Note 6) SO-8EP (Note 6) SOT223-3L (Note 6) U-DFN2030-8-8 (Note 6) SO-8EP (Note 6) SOT223-3L (Note 6) VIN = VIN-Min to VIN-Max, IOUT= 10mA to 1.5A VIN = VIN-Min to VIN-Max, IOUT= 10mA to 1.5A Min Typ. Max 0.584 0.605 0.626 0.575 0.635 0.596 0.605 0.614 0.587 0.623 50 750 190 240 280 0.04 0.05 0.18 0.33 1.0 1.2 1.3 3.6 3.7 2 25 25 65 61 1.0 100 170 10 174.0 52.8 105.7 28.2 10.0 18.5 Unit V V nA mV %/V %/A mA A A μs μs dB μV/√Hz μV(rms) °C o C/W o C/W 4. Dropout voltage is the minimum voltage difference between the input and the output at which the output voltage drops 2% below its nominal value. For any output voltage less than 2.5V, the minimum VIN operating voltage is the limiting factor. 5. The line and load regulation specification contains only the typical number. However, the limits for line and load regulation are included in the adjust voltage tolerance specification. 6. Device mounted on 2” x 2” FR-4 substrate PCB, 2oz copper with minimum recommended pad layout. AP7363 Document number: DS35059 Rev. 2 - 2 4 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics Unless otherwise specified: TJ=25°C, VIN=2.7V, CIN=10μF, COUT=10μF, IOUT=10mA, VOUT=1.8V Noise Density 10k Noise Density 10k COUT=10μF CER NOISE(nV/ROOT-Hz) COUT=10μF TANT NOISE(nV/ROOT-Hz) 1k 1k N EW PRODUCT 100 100 10 100 1000 10k 100k FREQUENCY(Hz) 10 100 1000 FREQUENCY(Hz) 10k 100k I GND vs Load Current 3 2.5 2 IGND (mA) 1.5 1 Turn-on Characeristics 2 V OUT(V) 1 125°C 0.5 0 0 0.5 ILOAD (A) 1 1.5 25°C -40°C 0 0 1 VIN (V) 2 3 AP7363 Document number: DS35059 Rev. 2 - 2 5 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR VADJ vs Temperature 0.615 Dropout Voltage vs Load Current 0.3 DROPOUT VOLTAGE(V) 0.610 125°C 0.2 VADJ (V) 0.605 25°C 0.600 -40°C 0.1 N EW PRODUCT 0.595 0.590 -50 -25 0 25 50 75 100 125 TEMPERATURE(℃ ) 0 0 0.5 1 LOAD CURRENT(A) 1.5 Turn-on Time Turn-on Time VOUT=1.2V (500mV/div) IL=0A, COUT=10μF CER VOUT=1.2V (500mV/div) IL=1.5A, COUT=10μF CER VIN=3.0V (2V/div) VIN=3.0V (2V/div) Time (10μs/div) Time (10μs/div) AP7363 Document number: DS35059 Rev. 2 - 2 6 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Load Transient Response VIN=3.3V COUT=10μF CER REJECTION RATIO(dB) P SRR 90 80 70 60 50 40 VOUT=1.8V (50mV/div) VIN=3.3V CIN=1μF CER N EW PRODUCT 30 VOUT=1.8V 20 IOUT=1A ILOAD=100mA to 1.5A (1A/div) 10 COUT=1μF CER 0 0.1 1 10 FREQUENCY(kHz) 100 1000 Time (40μs/div) Application Note Input Capacitor A minimum 2.2μF ceramic capacitor is recommended between IN and GND pins to decouple input power supply glitch and noise. The amount of the capacitance may be increased without limit. Larger input capacitor like 10μF will provide better load transient response. This input capacitor must be located as close as possible to the device to assure input stability and reduce noise. For PCB layout, a wide copper trace is required for both IN and GND pins. A lower ESR capacitor type allows the use of less capacitance, while higher ESR type requires more capacitance. Output Capacitor The output capacitor is required to stabilize and help the transient response of the LDO. The AP7362 is stable with any type of capacitor, with no limitations on minimum or maximum ESR. The device is designed to have excellent transient response for most applications with a small amount of output capacitance. The device is also stable with multiple capacitors in parallel, which can be of any type of value. Additional capacitance helps to reduce undershoot and overshoot during transient loads. This capacitor should be placed as close as possible to OUT and GND pins for optimum performance. The output voltage is calculated by: ⎛ R⎞ VOUT = VREF ⎜ 1 + 1 ⎟ ⎜ R2 ⎟ ⎝ ⎠ Where VREF=0.6V (the internal reference voltage) Rearranging the equation will give the following that is used for adjusting the output to a particular voltage: Adjustable Operation The AP7362 provides output voltage from 0.6V to 5.0V through external resistor divider as shown below. ⎛V ⎞ R1 = R 2 ⎜ OUT − 1⎟ ⎜V ⎟ ⎝ REF ⎠ To maintain the stability of the internal reference voltage, R2 need to be kept smaller than 10kΩ. AP7363 Document number: DS35059 Rev. 2 - 2 7 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Application Note (cont.) No Load Stability Other than external resistor divider, no minimum load is required to keep the device stable. The device will remain stable and regulated in no load condition. 120 100 80 60 40 LOOP GAIN(dB) 20 0 -20 -40 -60 -80 -100 -120 100 1k 10k 100k FREQUENCY(Hz) 140 120 PHASE GAIN 100 60 40 20 0 -20 -40 -60 -80 1M PHASE MARGIN( °) 80 Stability and Phase Margin Any regulator which operates using a feedback loop must be compensated in such a way as to ensure adequate phase margin, which is defined as the difference between the phase shift and -180 degrees at the frequency where the loop gain crosses unity (0 dB). For most LDO regulators, the ESR of the output capacitor is required to create a zero to add enough phase lead to ensure stable operation. The AP7362 has a internal compensation circuit which maintains phase margin regardless of the ESR of the output capacitor, any type of capacitos can be used. Below two charts show the gain/phase plot of the AP7362 with an output of 1.2V, 10 μF ceramic output capacitor, delivering 1.5A load current and no load. It can be seen the phase margin is about 90° (which is very stable). 120 100 80 60 LOOP GAIN(dB) 40 20 0 -20 -40 -60 -80 -100 140 N EW PRODUCT VIN=2.7V VOUT=1.2V IL=0A COUT=10μF CER Gain-Bandwidth Plot for no Load Short Circuit Protection PHASE GAIN 120 100 60 40 20 0 -20 -40 -60 100k -80 1M PHASE MARGIN( °) 80 When output current at OUT pin is higher than current limit threshold, the current limit protection will be triggered and clamp the output current to prevent overcurrent and to protect the regulator from damage due to overheating. Thermal Shutdown Protection Thermal protection disables the output when the junction temperature rises to approximately +170°C, allowing the device to cool down. When the junction temperature reduces to approximately +160°C the output circuitry is enabled again. Depending on power dissipation, thermal resistance, and ambient temperature, the thermal protection circuit may cycle on and off. This cycling limits the heat dissipation of the regulator, protecting it from damage due to overheating. VIN=2.7V VOUT=1.2V IL=1.5A COUT=10μF CER 1k 10k -120 100 FREQUENCY(Hz) Low Quiescent Current The AP7362, consuming only around 0.5mA for all input range, provides great power saving in portable and low power applications. Gain-Bandwidth Plot for 1.5A Load AP7363 Document number: DS35059 Rev. 2 - 2 8 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Application Note (cont.) Output Noise This is the integrated value of the output noise over a specified frequency range. Input voltage and output load current are kept constant during the measurement. Results are expressed in μVrms or μV √Hz. The AP7362 is a low noise regulator and needs no external noise reduction capacitor. Output voltage noise is typically 100μVrms overall noise level between 100 Hz and 100 kHz measured in μV(rms). The primary source of noise in low-dropout regulators is the internal reference. Power Dissipation The device power dissipation and proper sizing of the thermal plane that is connected to the thermal pad is critical to avoid thermal shutdown and ensure reliable operation. Power dissipation of the device depends on input voltage and load conditions and can be calculated by: PD = (VIN - VOUT) X IOUT The maximum power dissipation, handled by the device, depends on the junction to ambient thermal resistance, and maximum ambient temperature, which can be calculated by the equation in the following: N EW PRODUCT Noise is specified in two ways: Output noise density is the RMS sum of all noise sources, measured at the regulator output, at a specific frequency (measured with a 1Hz bandwidth). This type of noise is usually plotted on a curve as a function of frequency. Output noise voltage is the RMS sum of spot noise over a specified bandwidth. Spot noise is measured in units μV/√Hz or nV/√Hz and total output noise is PD _ max = ( +150°C - TA ) R θJA Ordering Information AP 7363 - XX XX - X Output Blank 10 12 15 18 25 33 Device AP7363-XXHA-7 AP7363-XXSP-13 AP7363-XXE-13 Notes: Package HA : U-DFN2030-8 SP : SO-8EP E : SOT223-3L Packing 7/13 : Tape & Reel : : : : : : : ADJ 1.0V 1.2V 1.5V 1.8V 2.5V 3.3V Package Code HA SP E Packaging (Note 7 & 8) U-DFN2030-8 SO-8EP SOT223-3L 7”/13” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 2500/Tape & Reel -13 2500/Tape & Reel -13 7. SOT223-3L is only available with fixed output version. 8. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AP7363 Document number: DS35059 Rev. 2 - 2 9 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Marking Information (1) U-DFN2030--8 ( Top View ) XX Y WX XX : Identification Code Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : G : Green Package U-DFN2030-8 U-DFN2030-8 U-DFN2030-8 U-DFN2030-8 U-DFN2030-8 U-DFN2030-8 U-DFN2030-8 Identification Code SA SB SC SD SE SF SG N EW PRODUCT Device AP7363ADJ AP7363-10 AP7363-12 AP7363-15 AP7363-18 AP7363-25 AP7363-33 (2) SO-8EP ( Top View ) 8 5 Logo Part Number AP7363 for ADJ AP7363-10 for 1.0V AP7363-12 for 1.2V AP7363-15 for 1.5V AP7363-18 for 1.8V AP7363-25 for 2.5V AP7363-33 for 3.3V AP7363-VV YY WW X X E 1 4 YY : Year : 08, 09,10~ WW : Week : 01~52; 52 represents 52 and 53 week X : Internal code SO-8-EP G : Green AP7363 Document number: DS35059 Rev. 2 - 2 10 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Marking Information (continued) (3) SOT223-3L ( Top View ) Logo Part Number 63 for ADJ 63-VV:10 for 1.0V 12 for 1.2V 15 for 1.5V 18 for 1.8V 25 for 2.5V 33 for 3.3V YWX 6 3-VV N EW PRODUCT Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z repersents 52 and 53 week X : G : Green Package Outline Dimensions (All Dimensions in mm) (1) Package Type: U-DFN2030-8 TOP MARK 0.10 C 8X0.08 C 0.57/0.63 0/0.05 0.25 A 0.15Typ. Seating Plane Side View 6x-0.50 C C L 8x-0.30 2X- 1.95/2.05 (Pin #1 ID) B A C L 2.95/3.05 1.50/1.70 C L 1.40/1.60 2.60 Pin1 1.60 Land Pattern Recommendation (Unit: mm) 2X0.25 B 8X0.30/0.60 0.50Typ. 0.20/0.30 0.10 CAB Top View Bottom View AP7363 Document number: DS35059 Rev. 2 - 2 11 of 14 www.diodes.com 1.70 2.60 C L 8x-0.60 July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Package Outline Dimensions (All Dimensions in mm) (cont.) (2) Package Type: SO-8EP Detail "A" Exposed pad 7°~9° 3.85/3.95 5.90/6.10 3.70/4.10 45° 0.35max. N EW PRODUCT 7°~9° 1 1.30/1.50 1.75max. 0.15/0.25 3.3Ref. 1 Bottom View 0/0.13 0.254 1.27typ 4.85/4.95 1 0.3/0.5 Gauge Plane Seating Plane 0.62/0.82 Detail "A" 8x-0.60 Exposed pad 6x-1.27 8x-1.55 Land Pattem Recommendation (Unit:mm) (3) Package Type: SOT223-3L Notes: 9. Coplanarity applies to the exposed heat sink slug as well as the terminals. AP7363 Document number: DS35059 Rev. 2 - 2 12 of 14 www.diodes.com 5.4 2.4Ref. July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Taping Orientation (Note 10) Tape Dimension and Orientation: (Dimensions in mm) U-DFN2030-8 DFN2030-8 3.90 4.10 3.90 4.10 1.50 1.60 1.65 1.85 3.45 3.55 XX YWX XX YWX XX YWX XX YWX N EW PRODUCT 7.90 8.30 Pin#1 Direction of Feed Note: 10. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf AP7363 Document number: DS35059 Rev. 2 - 2 13 of 14 www.diodes.com July 2011 © Diodes Incorporated AP7363 1.5A, LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. 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