AP7333

AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Features • • • • • • • • • • • • • • • 300mA Low Dropout Regulator in 3-pin package Very low IQ over full load: 65µA Wide input voltage range: 2V to 6V Fixed output options: 1.0V to 3.3V PSRR: 65dB typical at 100Hz Fast start-up time: 80µs Stable with low ESR, 1µF ceramic output capacitor Excellent Load/Line Transient Response Low dropout: 300mV typical at 300mA Current limit protection Short circuit protection Thermal shutdown protection Ambient temperature range: -40ºC to 85°C SOT23 and SOT23R: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 1) Description The AP7333 is a 300mA, fixed output voltage, low dropout linear regulator. The device included pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. The characteristics of low dropout voltage and low quiescent current make it suitable for low power applications, for example, battery powered devices. The typical quiescent current is approximately 65μA. Built-in current-limit and thermal-shutdown functions prevent IC from damage in fault conditions. The AP7333 is available in SOT23 packages with different pin-outs. Applications • • • • • XDSL Router Wireless LAN Cards Desktop and Notebook Computers Battery Powered Equipments Mouse, Keyboards Typical Application Circuit VIN IN AP7333 1uF GND OUT VOUT 1uF AP7333 Rev. 2 1 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Ordering Information AP7333 - XX XX G - 7 Output 10 : 1.0V 12 : 1.2V 15 : 1.5V 18 : 1.8V 20 : 2.0V 25 : 2.5V 28 : 2.8V 30 : 3.0V 33 : 3.3V Device AP7333-XXSAG-7 AP7333-XXSRG-7 Notes: Package SA : SOT23 SR : SOT23R Green Packing 7 : Tape & Reel G : Green Package Code SA SR Packaging (Note 2) SOT23 SOT23R 7” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 3000/Tape & Reel -7 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 2. 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. Pin Assignment (1) SOT23 (1) SOT23R ( Top View ) IN 1 3 GND OUT 2 OUT 2 ( Top View ) GND 1 3 IN AP7333 Rev. 2 2 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Pin Descriptions Pin Number SOT23 SOT23R 1 2 3 3 2 1 Pin Name IN OUT GND Description Voltage input pin. Bypass to ground through at least 1µF capacitor Voltage output pin. Bypass to ground through 1µF ceramic capacitor Ground Functional Block Diagram IN C urre nt Lim it and T herm a l S hutdow n OUT G ate D river R V REF R GND AP7333 Rev. 2 3 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Absolute Maximum Ratings Symbol ESD HBM ESD MM VIN TOP TST PD TJ Parameter Human Body Model ESD Protection Machine Model ESD Protection Input Voltage Continuous Load Current Operating Junction Temperature Range Storage Temperature Range SOT23 Power Dissipation (Note 3) SOT23R Maximum Junction Temperature Ratings 6 400 7 Internal Limited -40 ~ 125 -65 ~150 600 540 150 Units kV V V °C °C mW mW °C Recommended Operating Conditions Symbol VIN IOUT TA Notes: Parameter Input voltage Output Current (Note 4) Operating Ambient Temperature Min 2 0 -40 Max 6 300 85 Unit V mA °C 3. Ratings apply to ambient temperature at 25°C 4. The device maintains a stable, regulated output voltage without a load current. AP7333 Rev. 2 4 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Electrical Characteristics (TA = 25 C, VIN = VOUT +1V, CIN = 1uF, COUT = 1uF, unless otherwise stated) o Symbol IQ VDropout VOUT Parameter Input Quiescent Current Dropout Voltage (Note 5) Output Voltage Accuracy ΔVOUT Line Regulation /ΔVIN/V ΔVOUT Load Regulation /VOUT tST PSRR ISHORT ILIMIT TSHDN THYS θJA Notes: Start-up Time PSRR Short-circuit Current Current Limit Thermal Shutdown Threshold Thermal Shutdown Hysteresis Thermal Resistance Junction-to-Ambient Test Conditions Min IOUT = 0mA ⎯ IOUT = 300mA IOUT = 300mA TA = -40oC to 85oC, -2 IOUT = 30mA VIN = (VOUT +1V) to VIN-Max, IOUT = 1mA VIN = (VOUT +1V) to VIN-Max, -0.6 IOUT from 1mA to 300mA VIN = 0V to 2.0V, VOUT = 1V, IOUT = 300mA VIN = [VOUT +1V]VDC + 0.5VppAC, f = 100Hz, IOUT = 30mA VIN = VIN-Min to VIN-Max, VOUT < 0.2V VOUT/ROUT = 1A 400 Typ. Max Unit 55 75 μA 65 85 300 550 mV 2 % 0.01 0.20 %/V 0.6 80 65 100 600 140 15 207 230 % μs dB mA mA °C °C o C/W o C/W SOT23 (Note 6) SOT23R (Note 6) 5. 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 1.8V. 6. Test conditions for SOT23 and SOT23R: Device mounted on FR-4 substrate PCB, with minimum recommended pad layout, 2oz copper, single sided. AP7333 Rev. 2 5 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Typical Performance Characteristics Quiescent Current vs Input Voltage Iload=0mA Output Voltage Variation (%/V) 60 58 56 54 52 50 48 2.7 3 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7 6 Line Regulation (% /V) 0.1 Vout=2.5V 90℃ 90℃ 0.06 Output Current (mA) 0.02 -0.02 25℃ -45℃ -0.06 Vout=2.5V Vin=Vout +1V 3.5 4 4.5 25℃ -45℃ -0.1 5 5.5 6 Input Voltage (V) Input Voltage (V) Load Regulation (% ) 0.6 Dropout Voltage 350 Output Voltage Variation (%) Dropout Voltage (mV) 0.4 -45℃ 300 250 200 150 100 50 0 Vout=2.5V 90℃ 0.2 0 -0.2 25℃ -0.4 25℃ -45℃ Vout=2.5V Vin=Vout +1V 0 50 100 150 90℃ 200 250 300 -0.6 0 50 100 150 200 250 300 Output Current (mA) Output Current (mA) Short Circuit vs Input Voltage 105 100 95 90 85 80 75 3.5 4 4.5 5 5.5 6 Current Limit vs Input Voltage 600 Vout=2.5V Output Current (mA) Current Limit (mA) -45℃ 550 Ta=25℃ Vout=2.5V 500 450 25℃ 90℃ 400 3.5 4 4.5 5 5.5 6 Input Voltage (V) Input Voltage (V) AP7333 Rev. 2 6 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Typical Performance Characteristics (Continued) PSRR 75 70 65 75 70 PSRR PSRR (dB) 55 50 45 40 35 0.1 1 10 100 PSRR (dB) 60 Vout=1V Vin=2V Cin=Cout=1uF Ta=25℃ 65 60 55 50 45 40 35 0.1 1 Vout=2.5V Vin=3.5V Cin=Cout=1uF Ta=25℃ 10 100 Frequency (kHz) Frequency (kHz) Line Transient Response Line Transient Response Vin=3V to 2V (1V/div) Vin=2V to 3V (1V/div) Tr=10us Tr=10us Vout=1V (50mV/div) Vout=1V (50mV/div) Iout=300mA (300mA/div) Iout=300mA (300mA/div) Time (50us/div) Time (50us/div) AP7333 Rev. 2 7 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Typical Performance Characteristics Load Transient Response Tr=Tf=10us Vin=2V Vout=1V (100mV/div) (Continued) Load Transient Response Tr=Tf=10us Vin=3.5V Vout=2.5V (100mV/div) Iout=1mA to 300mA (100mA/div) Iout=1mA to 300mA (100mA/div) Time (200us/div) Start-Up Time (No Load) Time (200us/div) Start-Up Time (300mA Load) Vin=0 to 3.5V (1V/div) Cin=Cout=1uF Vin=0 to 3.5V (1V/div) Cin=Cout=1uF Vout=2.5V (1V/div) Vout=2.5V (1V/div) Iout (300mA/div) Time (50us/div) Time (50us/div) AP7333 Rev. 2 8 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Application Note Input Capacitor A 1μF ceramic capacitor is recommended to connect between VIN 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 less noise. For PCB layout, a wide copper trace is required for both VIN and GND. A lower ESR capacitor allows the use of less capacitance, while higher ESR type requires more capacitance. to cool down. When the junction temperature reduces to approximately +125°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. Ultra Fast Start-up After turned on, the AP7333 is able to provide full power in as little as tens of microseconds, typically 80µs, 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. Output Capacitor The output capacitor is required to stabilize and help transient response for LDO. The AP7333 is stable with very small ceramic output capacitors. The recommended capacitance is from 1μF to 4.7μF, Equivalent Series Resistance (ESR) is from 10mΩ to 200mΩ, and temperature characteristic is X7R or X5R. Higher capacitance values help to improve load/line transient response. The output capacitance may be increased to keep low undershoot/overshoot. Place output capacitor as close as possible to OUT and GND pins, and keep the leads as short as possible. Fast Transient Response Fast transient response LDOs can also extend battery life. TDMA-based cell phone protocols such as Global System for Mobile Communications (GSM) have a transmit/receive duty factor of only 12.5 percent, enabling power savings by putting much of the baseband circuitry into standby mode in between transmit cycles. In baseband circuits, the load often transitions virtually instantaneously from 100µA to 100mA. To meet this load requirement, the LDO must react very quickly without a large voltage drop or overshoot — a requirement that cannot be met with conventional, general-purpose LDOs. The AP7333’s fast transient response from 0 to 300mA provides stable voltage supply for fast DSP and GSM chipset with fast changing load. No Load Stability No minimum load is required to keep the device stable. The device will remain stable and regulated in no load condition. Current Limit 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 approximately 600mA to prevent over-current and to protect the regulator from damage due to overheating. Small Overshoot and Undershoot The AP7333 has small and controlled overshoot and undershoot in load and line transitions. This helps to protect supplied circuit from damage and operation error caused by glitches. This feature also permits the usage of small value output decoupling capacitor with AP7333. Short Circuit Protection When OUT pin is short-circuit to GND or OUT pin voltage is less than 200mV, short circuit protection will be triggered and clamp the output current to approximately 100mA. This feature protects the regulator from over-current and damage due to overheating. Low Quiescent Current The AP7333, consuming only around 65µA for all input range and output loading, provides great power saving in portable and low power applications. Thermal Shutdown Protection Thermal protection disables the output when the junction temperature rises to approximately +140°C, allowing the device Wide Output Options The AP7333, with multiples of fixed output voltage options, provides a versatile LDO solution for many portable applications. AP7333 Rev. 2 9 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Marking Information (1) SOT23 and SOT23R ( Top View ) 3 XX Y W X 1 2 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 : Green Device AP7333-10SA AP7333-12SA AP7333-15SA AP7333-18SA AP7333-20SA AP7333-25SA AP7333-28SA AP7333-30SA AP7333-33SA AP7333-10SR AP7333-12SR AP7333-15SR AP7333-18SR AP7333-20SR AP7333-25SR AP7333-28SR AP7333-30SR AP7333-33SR Package SOT23 SOT23 SOT23 SOT23 SOT23 SOT23 SOT23 SOT23 SOT23 SOT23R SOT23R SOT23R SOT23R SOT23R SOT23R SOT23R SOT23R SOT23R Identification Code JR JS JT JU JV JW JX JY JZ RA RB RC RD RE RF RG RH RJ AP7333 Rev. 2 10 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator Package Information (All Dimensions in mm) (1) Package Type: SOT23 and SOT23R AP7333 Rev. 2 11 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated AP7333 300mA, Low Quiescent Current, Fast Transient 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. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2009, Diodes Incorporated www.diodes.com AP7333 Rev. 2 12 of 12 www.diodes.com NOVEMBER 2009 © Diodes Incorporated