AP7363 1.5A LOW QUIESCENT CURRENT, FAST TRANSIENT ULTRA-LOW DROPOUT LINEAR REGULATOR Description Pin Assignments The AP7363 is a 1.5A adjustable output voltage linear regulator with (Top View) ultra-low dropout. The device includes pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. ADJ/ NC OUT OUT OUT 8 7 6 5 1 2 3 4 GND IN IN IN 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, SOT223 and TO252 packages. U-DFN2030-8 (Top View) 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: 2.2V 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: -40°C to +85°C • • • 1 8 ADJ/NC IN 2 7 OUT IN 3 6 OUT IN 4 5 OUT SO-8EP (Top View) 3 OUT U-DFN2030-8, SO-8EP, SOT223 and TO252: Available in “Green” Molding Compound (No Br, Sb) 2 GND (TAB) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) 1 IN SOT223 (Fixed Output) Applications • GND 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 3.3V or 5V rail (Top View) 3 2 GND 1 TO252 Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. AP7363 Document number: DS35059 Rev. 8 - 2 1 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 Typical Applications Circuit VIN VOUT IN VIN VOUT OUT IN AP7363 OUT AP7363 10µF 10µF R1 10µF 10µF ADJ GND GND R2 Fixed Output Adjustable Output ⎛ R ⎞ VOUT = VREF⎜⎜1+ 1 ⎟⎟ where R2 ≤ 10kΩ ⎝ R2 ⎠ Pin Descriptions Pin Number Pin Name GND IN OUT SOT223 TO252 2 1 3 U-DFN2030-8 SO-8EP 1 2, 3, 4 5, 6, 7 ADJ NA 8 NC NA 8 EP/TAB — — Function 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 OUT Gate Driver EN Current Limit and Thermal Shutdown OUT IN R EN Gate Driver Current Limit and Thermal Shutdown ADJ 0.605V 0.605V R GND Fixed Version AP7363 Document number: DS35059 Rev. 8 - 2 GND Adjustable Version 2 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 Absolute Maximum Ratings (cont.) (@TA = +25°C, unless otherwise specified.) Symbol ESD HBM ESD MM Parameter Human Body Model ESD Protection Machine Model ESD Protection Ratings 2000 200 Unit V V VIN Input Voltage -0.3 to +6.0 V VOUT OUT Voltage -0.3 to VIN +0.3 V IOUT Continuous Load Current Internal Limited TST Storage Temperature Range TJ Maximum Junction Temperature -65 to +150 °C 150 °C Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Symbol Parameter VIN Input voltage IOUT Output Current Notes: Min Max Unit 2.2 5.5 V 0 1.5 A TA Operating Ambient Temperature -40 +85 °C TJ Operating Junction Temperature (Note 5) -40 +125 °C 4. 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 are not implied. Exposure to absolute-maximum rated conditions for extended periods may affect device reliability. 5. 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. 8 - 2 3 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 Electrical Characteristics (@TA = +25°C, VIN = 3.3V, IOUT = 10mA, CIN = 10µF, COUT = 10µF, unless otherwise specified.) Minimum and maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TA = +25°C, and are provided for reference purposes only. Symbol Parameter Test Conditions Min Typ Max Unit VADJ ADJ Pin Voltage VIN = VIN-MIN to VIN-MAX, IOUT = 10mA to 1.5A IADJ ADJ Pin Bias Current VIN = VIN-MIN to VIN-MAX Dropout Voltage (Note 6) IOUT = 1.5A, VOUT = 2.5V VDROPOUT ΔVOUT /ΔVIN Line Regulation (Note 7) VIN = VIN-MIN to VIN-MAX ΔVOUT /ΔIOUT Load Regulation (Note 7) IOUT = 10mA to 1.5A IGND IOUT-PK Ground Pin Current in Normal Operation Mode IOUT = 10mA to 1.5A Peak Output Current VOUT ≥ VOUT - NOM -5% TA = +25°C 0.584 Over temp 0.575 nA 750 190 TA = +25°C Over temp 240 mV 280 — Over temp TA = +25°C V 0.635 Over temp TA = +25°C 0.626 50 TA = +25°C 0.04 — 0.05 — 0.18 Over temp 0.33 TA = +25°C 1.0 Over temp — %/V %/A 1.2 mA 1.3 A 3.6 3.7 TA = +25°C Short Circuit Current OUT grounded td(off) Turn-Off Delay From VEN < VIL to VOUT = OFF, IOUT = 1.5A td(on) Turn-On Delay ISC 0.605 Over temp A 2 25 μs μs From VEN > VIH to VOUT = ON, IOUT = 1.5A 25 VIN = 3.0V, IOUT = 1.5A, f = 120Hz 65 VIN = 3.0V, IOUT = 1.5A, f = 1kHz 61 Output Noise Density F = 120Hz, COUT = 10μF ceramic 1.0 μV/√Hz Output Noise Voltage BW = 100Hz – 100kHz, COUT = 10μF ceramic 100 μV(rms) TSHDN Thermal Shutdown Threshold TJ rising 170 THYS Thermal Shutdown Hysteresis TJ falling from TSHDN 10 Thermal Resistance Junction-toAmbient U-DFN2030-8 (Note 8) SO-8EP (Note 8) SOT223 (Note 8) 174.0 52.8 105.7 TO252 (Note 8) U-DFN2030-8 (Note 8) SO-8EP (Note 8) SOT223 (Note 8) TO252 (Note8) 87.8 28.2 10.0 18.5 17.3 PSRR ρn(l/f) en θJA θJC Notes: Ripple Rejection Thermal Resistance Junction-to-Case dB °C o C/W o C/W 6. 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. 7. 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. 8. Device mounted on 2” x 2” FR-4 substrate PCB, 2oz copper with minimum recommended pad layout. AP7363 Document number: DS35059 Rev. 8 - 2 4 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 Typical Performance Characteristics (@TJ = +25°C, VIN = 2.7V, CIN = 10µF, COUT = 10µF, IOUT = 10mA, VOUT = 1.8V.) 10k 10k COUT = 10µF CER COUT = 10µF NOISE (nV/√Hz) NOISE (nV/√Hz) 1k 100 10 100 1000 10k FREQUENCY (Hz) Noise Density 1k 100 10 100 100k 1000 10k FREQUENCY (Hz) Noise Density 100k 2 3 2.5 VOUT (V) IGND (mA) 2 1.5 1 25°C 125°C 1 -40°C 0.5 0 0 0.5 1 0 1.5 0 ILOAD (A) IGND vs. Load Current 0.615 2 VIN (V) Turn-On Characteristics 3 0.3 DROPOUT VOLTAGE (V) 0.610 VADJ (V) 1 0.605 0.600 125°C 0.2 25°C -40°C 0.1 0.595 0.590 -50 -25 0 25 50 75 100 125 Document number: DS35059 Rev. 8 - 2 0.5 1 1.5 LOAD CURRENT (A) Dropout Voltage vs. Load Current TEMPERATURE (°C) VADJ vs. Temperature AP7363 0 0 5 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 Typical Performance Characteristics (cont.) (@TJ = +25°C, VIN = 2.7V, CIN = 10µF, COUT = 10µF, IOUT = 10mA, VOUT = 1.8V.) Turn-On Time Turn-On Time VOUT = 1.2V (500mV/div) IL = 1.5A, COUT = 10μF CER VOUT = 1.2V (500mV/div) IL = 0A, COUT = 10μF CER VIN = 3.0V (2V/div) VIN = 3.0V (2V/div) Time (10μs/div) Time (10μs/div) Load Transient Response 90 VIN = 3.3V COUT =10μF CER VOUT = 1.8V (50mV/div) REJECTION RATIO (dB) 80 70 60 50 40 30 20 10 ILOAD = 100mA to 1.5A (1A/div) VIN = 3.3V VOUT = 1.8V IOUT = 1A C IN = 1µF CER C OUT = 1µF CER 0 100 1k 10k 100k FREQUENCY (kHz) PSRR 1M Time (40μs/div) AP7363 Document number: DS35059 Rev. 8 - 2 6 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 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 AP7363 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. Adjustable Operation The AP7363 provides output voltage from 0.6V to 5.0V through external resistor divider as shown below. The output voltage is calculated by: ⎛ R ⎞ VOUT = VREF ⎜1 + 1 ⎟ ⎜ R ⎟ 2⎠ ⎝ 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: ⎛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. 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. AP7363 Document number: DS35059 Rev. 8 - 2 7 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 Application Note (cont.) 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 AP7363 has a internal compensation circuit which maintains phase margin regardless of the ESR of the output capacitor, any type of capacitos can be used. The two charts on the next page show the gain/phase plot of the AP7363 with an output of 1.2V, 10μF 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). LOOP GAIN (dB) 60 GAIN 40 120 120 100 100 80 80 60 60 20 40 0 20 -20 0 -40 -60 -80 -100 -20 VIN = 2.7V VOUT = 1.2V IL = 1.5A COUT = 10µF CER -120 100 1k 10k 100k 40 120 PHASE 100 80 GAIN 60 20 40 0 20 -20 0 -40 -60 -40 -80 -60 -100 -80 1M 140 -120 100 -20 VIN = 2.7V VOUT = 1.2V I L = 0A COUT = 10µF CER 1k PHASE MARGIN (°) 80 140 LOOP GAIN (dB) 100 PHASE PHASE MARGIN (°) 120 -40 -60 10k 100k -80 1M FREQUENCY(Hz) Gain-Bandwidth Plot for no Load FREQUENCY(Hz) Gain-Bandwidth Plot for 1.5A Load Short Circuit Protection 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 over-current 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. Low Quiescent Current The AP7363, consuming only around 0.5mA for all input range, provides great power saving in portable and low power applications. 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 AP7363 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. 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 measured in μV(rms). The primary source of noise in low-dropout regulators is the internal reference. AP7363 Document number: DS35059 Rev. 8 - 2 8 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 Application Note (cont.) 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: PD _ max = ( +150°C - TA ) R θJA Ordering Information Part Number Package Code Packaging (Note 9) AP7363-XXHA-7 AP7363-XXSP-13 AP7363-XXE-13 AP7363-XXD-13 HA SP E D U-DFN2030-8 SO-8EP SOT223-3L TO252-3L Note: 7”/13” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 2500/Tape & Reel -13 2500/Tape & Reel -13 2500/Tape & Reel -13 9. TO252 and SOT223 are only available with fixed output version. Marking Information (1) U-DFN2030-8 Device AP7363ADJ AP7363-10 AP7363-12 AP7363-15 AP7363-18 AP7363-25 AP7363-33 AP7363 Document number: DS35059 Rev. 8 - 2 Package U-DFN2030-8 U-DFN2030-8 U-DFN2030-8 U-DFN2030-8 U-DFN2030-8 U-DFN2030-8 U-DFN2030-8 9 of 14 www.diodes.com Identification Code SA SB SC SD SE SF SG December 2012 © Diodes Incorporated AP7363 Marking Information (cont.) (2) SO-8EP (3) SOT223 (4) TO252 AP7363 Document number: DS35059 Rev. 8 - 2 10 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 Package Outline Dimensions (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. (1) U-DFN2030-8 A A1 A3 U-DFN2030-8 Dim Min Max Typ A 0.57 0.63 0.60 A1 0 0.05 0.02 A3 0.15 b 0.20 0.30 0.25 D 1.95 2.05 2.00 D2 1.40 1.60 1.50 e 0.50 E 2.95 3.05 3.00 E2 1.50 1.70 1.60 L 0.35 0.45 0.40 Z 0.125 All Dimensions in mm Seating Plane D L e (Pin #1 ID) C'0.25*45° E E2 D2 Z b (2) SO-8EP Exposed Pad 8 5 E1 1 H 4 F b Bottom View E 9° (All sides) N 7° A e D A1 AP7363 Document number: DS35059 Rev. 8 - 2 45° Q C 4° ± 3° Gauge Plane Seating Plane E0 SO-8EP (SOP-8L-EP) Dim Min Max Typ A 1.40 1.50 1.45 A1 0.00 0.13 b 0.30 0.50 0.40 C 0.15 0.25 0.20 D 4.85 4.95 4.90 E 3.80 3.90 3.85 E0 3.85 3.95 3.90 E1 5.90 6.10 6.00 e 1.27 F 2.75 3.35 3.05 H 2.11 2.71 2.41 L 0.62 0.82 0.72 N 0.35 Q 0.60 0.70 0.65 All Dimensions in mm L 11 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 Package Outline Dimensions (cont.) (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. (3) SOT223 SOT223 Dim Min Max Typ A 1.55 1.65 1.60 A1 0.010 0.15 0.05 b1 2.90 3.10 3.00 b2 0.60 0.80 0.70 C 0.20 0.30 0.25 D 6.45 6.55 6.50 E 3.45 3.55 3.50 E1 6.90 7.10 7.00 e — — 4.60 e1 — — 2.30 L 0.85 1.05 0.95 Q 0.84 0.94 0.89 All Dimensions in mm A A1 (4) TO252 E A b3 c2 L3 A2 D E1 H L4 A1 L e 2X b2 3X b AP7363 Document number: DS35059 Rev. 8 - 2 a 12 of 14 www.diodes.com TO252 Dim Min Max Typ A 2.19 2.39 2.29 A1 0.00 0.13 0.08 A2 0.97 1.17 1.07 b 0.64 0.88 0.783 b2 0.76 1.14 0.95 b3 5.21 5.46 5.33 c2 0.45 0.58 0.531 D 6.00 6.20 6.10 D1 5.21 − − e 2.286 − − E 6.45 6.70 6.58 E1 4.32 − − H 9.40 10.41 9.91 L 1.40 1.78 1.59 L3 0.88 1.27 1.08 L4 0.64 1.02 0.83 a 0° 10° − All Dimensions in mm December 2012 © Diodes Incorporated AP7363 Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. (1) U-DFN2030-8 X2 Y C Dimensions Y2 C G X X1 X2 Y Y1 Y2 Y1 X1 Value (in mm) 0.500 0.250 0.350 1.500 1.850 0.600 1.600 3.300 G Pin1 X (2) SO-8EP X2 Dimensions C X X1 X2 Y Y1 Y2 Y1 Y2 X1 Value (in mm) 1.270 0.802 3.502 4.612 1.505 2.613 6.500 Y C X (3) SOT223 X1 Y1 Dimensions X1 X2 Y1 Y2 C1 C2 C1 Y2 Value (in mm) 3.3 1.2 1.6 1.6 6.4 2.3 C2 X2 (4) TO252 X2 Dimensions Z X1 X2 Y1 Y2 C E1 Y2 C Z Value (in mm) 11.6 1.5 7.0 2.5 7.0 6.9 2.3 Y1 X1 AP7363 Document number: DS35059 Rev. 8 - 2 E1 13 of 14 www.diodes.com December 2012 © Diodes Incorporated AP7363 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). 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