AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Description Pin Assignments NEW PRODUCT The AP7361 is a 1A, adjustable and fixed output voltage, ultra-low dropout linear regulator with enable. The device includes pass element, error amplifier, band-gap reference, current limit and thermal shutdown circuitry. The device is turned on when EN pin is set to logic high level. (Top View) OUT 1 8 IN NC 2 7 NC ADJ/NC 3 6 NC 4 5 EN The characteristics of the low dropout voltage and low quiescent current make it suitable for low to medium power applications, for example, laptop computers, audio and video applications, and battery powered devices. The typical quiescent current is approximately 70µA. Built-in current-limit and thermal-shutdown functions prevent IC from damage in fault conditions. DFN3030E-8 Features The AP7361 is available in DFN3030E-8 package. Applications • • • • GND GND Servers and laptops FPGA and DSP core or I/O power TV, and home electrical appliances Battery-powered devices Note: 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 • • • • • • • • • • • • • • • Wide input voltage range: 2.2V – 6V 150mV very low dropout at 300mA load 500mV very low dropout at 1A load Low quiescent current (IQ): 70µA typical Adjustable output voltage range: 1V to 5.0V Fixed output options: 1V to 3.3V Very fast transient response High PSRR Accurate voltage regulation Current limiting and short circuit protection Thermal shutdown protection Stable with ceramic output capacitor ≥ 2.2µF Ambient temperature range -40ºC to 85 ºC DFN3030E-8: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1) Typical Application Circuit V IN V OUT IN V IN V OUT IN OUT AP7361 AP7361 1uF Enable OUT 4.7uF 1uF EN Enable R1 4.7uF ADJ EN GND G ND Fixed Output Adjustable Output AP7361 Document number: DS33626 Rev. 1 - 2 1 of 15 www.diodes.com R2 December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE NEW PRODUCT Pin Descriptions Pin Number Pin Name DFN3030E-8 IN 8 OUT 1 GND 4 ADJ 3 EN 5 NC 2, 6, 7 Description The input of the regulator. Bypass to ground through at least 1µF ceramic capacitor. The output of the regulator. Bypass to ground through at least 2.2µF ceramic capacitor. For improved ac load response a larger capacitor is recommended. Ground. Adjustable voltage version only – a resistor divider from this pin to the OUT pin and ground sets the output voltage. Enable input, active high. No connection. Functional Block Diagram IN EN OUT Gate Driver Current Limit and Thermal Shutdown IN EN R OUT Gate Driver Current Limit and Thermal Shutdown ADJ 0.8V 0.8V R GND GND Adjustable Version Fixed Version Absolute Maximum Ratings Symbol Parameter ESD HBM Human Body Model ESD Protection ESD MM VIN TJ Machine Model ESD Protection Input Voltage OUT, ADJ, EN Voltage Operating Junction Temperature Range TST Storage Temperature Range PD Power Dissipation (Note 2) PD Power Dissipation (Note 2) Note: DFN3030E-8 Ratings Unit >2 > 200 6.5 VIN + 0.3 -40 ~ 150 KV -65 ~150 Internally limited by maximum junction temperature of 150°C °C 1700 mW V V V °C 2. Ratings apply to ambient temperature at 25°C AP7361 Document number: DS33626 Rev. 1 - 2 2 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Recommended Operating Conditions Symbol Input voltage Output Current (Note 3) Operating Ambient Temperature VIN IOUT TA NEW PRODUCT Note: Parameter Min Max Unit 2.2 0 -40 6.0 1.0 85 V A °C 3. The device maintains a stable, regulated output voltage without a load current. When the output current is large, attention should be given to the limitation of the package power dissipation. Electrical Characteristics (TA = 25oC, VIN = VOUT +1V, CIN = 1μF, COUT = 4.7μF, VEN = VIN, unless otherwise stated) Symbol Parameter Test Conditions VREF IADJ IQ ISHDN FB reference voltage ADJ pin leakage Input Quiescent Current Input Shutdown Current VOUT Output Voltage Accuracy ΔVOUT ΔVIN × VOUT Line Regulation ΔVOUT / VOUT Load Regulation VDropout VIL VIH IEN ILIMIT ISHORT PSRR Dropout Voltage (Note 4) EN Input Logic Low Voltage EN Input Logic High Voltage EN Input leakage Current limit Short-circuit Current Power Supply Rejection Ratio (Note 5) Start-up Time tST ΔVOUT Output voltage temperature ΔTA × VOUT coefficient TSHDN THYS θJA Notes: Thermal shutdown threshold Thermal shutdown hysteresis Thermal Resistance Junction-toAmbient Min IOUT = 10mA, TA = 25°C Enabled, IOUT = 0A VEN = 0V, IOUT = 0A IOUT = 100mA, TA = 25°C IOUT = 100mA, -40°C ≤ TA ≤ 85°C Over VIN, IOUT, and TA VIN = VOUT +1V to TA = 25°C 6V, IOUT = 100mA -40°C ≤TA ≤ 85°C IOUT from 1mA to 300mA IOUT from 1mA to 1A IOUT = 300mA IOUT = 500mA IOUT = 1A VIN = 6V, VEN = 0V or 6V VIN = VOUT +1V VIN = VOUT +1V, Output Voltage < 25% Vout f = 1KHz, IOUT = 100mA f = 10KHz, IOUT = 100mA VOUT = 3V, COUT = 1µF, RL = 30Ω IOUT = 100mA, -40°C ≤ TA ≤ 85°C DFN3030E-8 (Note 6) -1 -1 -2 -3 -1.0 -1.0 0 1.0 -0.1 1.1 Typ. 0.8 0.1 70 0.05 ±0.5 0.01 0.5 0.5 150 250 500 0.01 1.5 Max 0.5 90 1 1 2 3 0.1 0.2 1.0 1.0 200 350 700 0.3 VIN 0.1 Unit V µA µA µA % %/V % % mV V V µA A 200 60 mA 65 45 200 dB µs ±130 ppm/°C 150 20 °C °C 70 o C/W 4. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value. This parameter only applies to output voltages above 1.5V since minimum VIN = 2.2V. 5. For VIN ≥ 2.5V and VIN = VOUT + 1V. For VIN < 2.5V, the PSRR performance may be reduced. 6. Test condition for DFN3030E-8: Device mounted on 2"x2", FR-4 substrate PCB, with minimum recommended pad on top layer and thermal vias to bottom layer ground plane. AP7361 Document number: DS33626 Rev. 1 - 2 3 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Typical Performance Characteristics Start-up Time NEW PRODUCT Start-up Time VEN=0 to 2V (1V/div) VIN=4.0V CIN=COUT=1μF VEN=0 to 2V (1V/div) VIN=4.0V CIN=COUT=1μF VOUT=3.0V (1V/div) with 100mA load VOUT=3.0V (1V/div) with 500mA load Time (100μs/div) Time (100μs/div) Line Transient Response Line Transient Response VIN=4.3V to 5.3V (1V/div) Tr=Tf=5μs IOUT=100mA COUT=4.7μF VIN=5.5V to 6V (1V/div) Tr=Tf=5μs IOUT=100mA COUT=4.7μF VOUT=3.3V (20mV/div) VOUT=5.0V (20mV/div) Time (40μs/div) AP7361 Document number: DS33626 Rev. 1 - 2 Time (40μs/div) 4 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Typical Performance Characteristics (Continued) Load Transient Response VIN=VEN=2.2V CIN=1μF,COUT=4.7μF Load Transient Response VIN=VEN=2.2V CIN=1μF,COUT=4.7μF NEW PRODUCT VOUT=1.2V (20mV/div) VOUT=1.2V (20mV/div) IOUT=50mA to 100mA (50mA/div) IOUT=100mA to 500mA (200mA/div) Time (200μs/div) Time (200μs/div) Load Transient Response Load Transient Response VIN=VEN=4.3V CIN=1μF,COUT=4.7μF VIN=VEN=4.3V CIN=1μF,COUT=4.7μF VOUT=3.3V (20mV/div) VOUT=3.3V (20mV/div) IOUT=50mA to 100mA (50mA/div) IOUT=100mA to 500mA (200mA/div) Time (200μs/div) AP7361 Document number: DS33626 Rev. 1 - 2 Time (200μs/div) 5 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Typical Performance Characteristics (Continued) Load Transient Response Load Transient Response VIN=VEN=6.0V CIN=1μF,COUT=4.7μF VIN=VEN=6.0V CIN=1μF,COUT=4.7μF NEW PRODUCT VOUT=5.0V (20mV/div) VOUT=5.0V (20mV/div) IOUT=50mA to 100mA (50mA/div) IOUT=100mA to 500mA (200mA/div) Time (200μs/div) Time (200μs/div) PSRR vs Frequency PSRR vs Frequency 100 IOUT=30mA 90 80 80 70 70 PSRR(dB) PSRR(dB) 90 100 60 50 IOUT=100mA 40 30 20 10 VIN=2.5V+0.5VppAC VOUT=1.2V COUT=4.7μF TA=25°C 0 10 0.01 IOUT=30mA 60 50 IOUT=100mA 40 30 20 10 VIN=2.8V+0.5VppAC VOUT=1.8V COUT=4.7μF TA=25°C 0 100 0.1 1k 10k 1 10 Frequency(Hz) AP7361 Document number: DS33626 Rev. 1 - 2 100k 100 1M 1000 10 0.01 100 0.1 1k 1 10k 10 100k 100 1M 1000 Frequency(Hz) 6 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Typical Performance Characteristics (Continued) PSRR vs Frequency PSRR vs Frequency 100 100 IOUT=30mA 70 70 PSRR(dB) PSRR(dB) 80 60 IOUT=100mA 50 40 60 50 10 IOUT=100mA 40 VIN=3.5V+0.5VppAC VOUT=2.5V COUT=4.7μF TA=25°C 20 IOUT=30mA 90 80 30 VIN=4.3V+0.5VppAC VOUT=3.3V COUT=4.7μF TA=25°C 30 20 10 0 0 10 0.01 100 0.1 1k 10k 1 10 Frequency(Hz) 100k 100 1M 1000 10 0.01 100 0.1 1k 10k 1 10 Frequency(Hz) 100k 100 1M 1000 Dropout Voltage vs Output Current FB Reference Voltage vs Temperature 0.82 600 VIN=4.3V IOUT=100mA VOUT=3.3V 500 Dropout Voltage(mV) FB Reference Voltage(V) NEW PRODUCT 90 0.81 0.80 0.79 25°C 400 85°C 300 -40°C 200 100 0 0.78 -50 -25 0 25 50 75 Temperature(℃ ) AP7361 Document number: DS33626 Rev. 1 - 2 100 125 0 200 400 600 800 1000 Output Current(mA) 7 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Typical Performance Characteristics (Continued) 2.0 2.0 Current limit(A) Current limit(A) Current limit vs Temperature 2.5 1.5 1.0 VOUT=1.2V 1.5 1.0 VIN=2.2V VOUT=1.2V 0.5 0.5 0.0 0.0 2 3 4 Input Voltage(V) 5 -50 6 -25 0 25 50 75 100 125 Temperature(℃ ) Short-circuit current vs Temperature Current limit vs Temperature 300 Short-circuit current (mA) 2.5 2.0 Current limit(A) NEW PRODUCT Current limit vs Input Voltage 2.5 1.5 1.0 VIN=4.3V VOUT=3.3V 0.5 250 200 150 100 VIN=4.3V 50 0.0 0 -50 -25 0 25 50 75 100 125 Temperature(℃ ) AP7361 Document number: DS33626 Rev. 1 - 2 -50 -25 0 25 50 75 100 125 Temperature(℃ ) 8 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Typical Performance Characteristics (Continued) Line Regulation Load Regulation 0.9 0.2 VIN=VEN=4.3V VOUT=3.3V 85°C Output Variation(%/V) Output Variation(%) VOUT=3.3V IOUT=100mA 25°C 0.3 0.0 -0.3 -40°C 0.1 85°C 0.0 -0.1 25°C -0.6 -40°C -0.2 -0.9 0 200 400 600 800 4 1000 4.5 5 5.5 6 Input Voltage(V) Output Current(mA) Input Quiescent Current vs Input Voltage Input Quiescent Current vs Temperature 80 80 Input Quiescent Current(μA) Input Quiescent Current(μA) NEW PRODUCT 0.6 60 40 VIN=VEN=4.3V IOUT=0mA 20 60 40 TA=25°C IOUT=0mA 20 0 0 -50 -25 0 25 50 75 Temperature(℃ ) AP7361 Document number: DS33626 Rev. 1 - 2 100 125 9 of 15 www.diodes.com 4 4.5 5 5.5 Input Voltage(V) 6 December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE NEW PRODUCT Application Information Input Capacitor Adjustable Operation A 1μF 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. 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. The AP7361 provides output voltage from 0.8V to 5.0V through external resistor divider as shown below. V IN V OU T IN O UT AP7361 1uF Enable R1 4.7uF ADJ EN G ND Output Capacitor The output capacitor is required to stabilize and improve the transient response of the LDO. The AP7361 is stable with very small ceramic output capacitors. Using a ceramic capacitor value that is at least 2.2μF with 10mΩ ≦ ESR ≦ 300mΩ on the output ensures stability. Higher capacitance values help to improve line and load transient response. The output capacitance may be increased to keep low undershoot and overshoot. Output capacitor must be placed as close as possible to OUT and GND pins. R2 Adjustable Output The output voltage is calculated by: ⎛ R ⎞ VOUT = VREF ⎜⎜1 + 1 ⎟⎟ R 2⎠ ⎝ Where VREF=0.8V (the internal reference voltage) Rearranging the equation will give the following that is used for adjusting the output to a particular voltage: ⎞ ⎛V R1 = R2 ⎜⎜ OUT − 1⎟⎟ V REF ⎠ ⎝ To maintain the stability of the internal reference voltage, R2 need to be kept smaller than 80kΩ. 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. ON/OFF Input Operation The AP7361 is turned on by setting the EN pin high, and is turned off by pulling it low. If this feature is not used, the EN pin should be tied to IN pin to keep the regulator output on at all time. To ensure proper operation, the signal source used to drive the EN pin must be able to swing above and below the specified turn-on/off voltage thresholds listed in the Electrical Characteristics section under VIL and VIH. AP7361 Document number: DS33626 Rev. 1 - 2 10 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Application Information (Continued) Current Limit Protection Ultra Fast Start-up 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. After enabled, the AP7361 is able to provide full power in as little as tens of microseconds, typically 200µs, without sacrificing low ground current. This feature will help load circuitry move in and out of standby mode in real time, eventually extend battery life for mobile phones and other portable devices. NEW PRODUCT Short Circuit Protection When OUT pin is short-circuit to GND, short circuit protection will be triggered and clamp the output current to approximately 200mA. Full current is restored when the output voltage exceeds 25% of Vout. This feature protects the regulator from over-current and damage due to overheating. Low Quiescent Current The AP7361, consuming only around 70µA for all input range, provides great power saving in portable and low power applications. Power Dissipation Thermal Shutdown Protection Thermal protection disables the output when the junction temperature rises to approximately +150°C, allowing the device to cool down. When the junction temperature reduces to approximately +130°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. 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 maximum junction to ambient thermal resistance, maximum ambient temperature, and maximum device junction temperature, which can be calculated by the equation in the following: PD (max@ TA ) = AP7361 Document number: DS33626 Rev. 1 - 2 11 of 15 www.diodes.com ( +150°C - TA ) R θJA December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Ordering Information AP7361 - XX XXX - X Output NEW PRODUCT Blank : ADJ 10 : 1.0V 12 : 1.2V 15 : 1.5V 18 : 1.8V 25 : 2.5V 28 : 2.8V 33 : 3.3V Note: Package Packing FGE : DFN3030E-8 7 : Tape & Reel Device Package Code Packaging (Note 7) AP7361-XXFGE-7 FGE DFN3030E-8 7”/13” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 7. 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. AP7361 Document number: DS33626 Rev. 1 - 2 12 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Marking Information (1) DFN3030E-8 ( Top View ) NEW PRODUCT XX YW X 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 : A~Z : Internal code Device Package Identification Code AP7361ADJ AP7361-10 AP7361-12 AP7361-15 AP7361-18 AP7361-25 AP7361-28 AP7361-33 DFN3030E-8 DFN3030E-8 DFN3030E-8 DFN3030E-8 DFN3030E-8 DFN3030E-8 DFN3030E-8 DFN3030E-8 PA PB PC PD PE PF PG PH Package Outline Dimensions 0.10 C 0.08 C Side View 2.95/3.05 B 0.65 8x-0.30 CL C A CL (Pin #1 ID) 1.60 2X- 0.25 A 0/0.05 Seating Plane 0.57/0.63 8X- 2.95/3.05 1.40/1.60 8x-0.65 CL 2.75 TOP MARK 0.15Typ. (1) Package Type: DFN3030E-8 R0 .20 CL Pin #1 2.35 Land Pattern Recommendation (Unit: mm) Top View 0.25 B 0.30/0.60 8X- 2X- AP7361 Document number: DS33626 Rev. 1 - 2 0.65Typ. 0.20/0.30 0.10 C A B Bottom View 13 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Taping Orientation (Note 9) NEW PRODUCT For DFN3030E-8 Note: 9. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf . AP7361 Document number: DS33626 Rev. 1 - 2 14 of 15 www.diodes.com December 2010 © Diodes Incorporated AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE 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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