APL531712BI-TRG

APL5317 Selectable Adjustable/Fixed Low Dropout 300mA Linear Regulator Features • • • • Wide Operating Voltage: 2.8~6V Low Dropout Voltage: 230mV(Typical) @ 300mA Guaranteed 300mA Output Current Two Modes for Setting Output Voltage - Fixed Output Voltage: 1~5V - Adjustable Output Voltage: 0.8~5.5V General Description The APL5317 is a low dropout linear regulator which only needs a single input voltage supply from 2.8 to 6V, and it can deliver current up to 300mA to a set output voltage. It can work with low ESR ceramic capacitors that make it ideal for using in the battery-powered applications, such as notebook computers and cellular phones. Its typical dropout voltage is only 230mV at 300mA loading. The APL5317 provides two output voltage operation modes, the fixed output voltage mode and the adjustable output voltage, controlled by the SET pin for setting the output voltage. The fixed output voltage mode sets the output to a preset voltage (only 1.2V available now) in the chip by connecting SET pin to the ground, and the adjustable output voltage mode needs two resistors as a voltage divider connected to SET pin to define the output. The current-limit with current foldback and thermal shutdown functions protect the device against current over-loads and over temperature. The APL5317 is available in a SOT23-5 package. • • • • • • Current-Limit Protection with Foldback Current Internal Soft-Start Over-Temperature Protection Stable with Low ESR Ceramic Capacitor SOT-23-5 Package Lead Free and Green Devices Available (RoHS Compliant) Applications • • • Cellular Phones Pin Configuration VIN 1 5 VOUT 4 SET SOT-23-5 GND 2 SHDN 3 Portable and Battery-Powered Equipment Notebook and Personal Computers Simplified Application Circuit 1. Fixed Output Voltage Mode VIN APL5317 1 VIN VOUT SET 5 4 COUT VOUT 2. Adjustable Output Voltage Mode APL5317 VIN 1 VIN VOUT SET GND 2 5 4 COUT VOUT CIN 3 SHDN GND 2 CIN 3 SHDN ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright © ANPEC Electronics Corp. Rev. A.4 - Mar., 2009 1 www.anpec.com.tw APL5317 Ordering and Marking Information APL5317 Assembly Material Handling Code Temperature Range Package Code Voltage Code APL5317 B: APL5317-12 B: 375X 375X Package Code B : SOT-23-5 Operating Junction Temperature Range I : -40 to 85 oC Handling Code TR : Tape & Reel Voltage Code (Note 1) 12 : 1.2V Assembly Material G: Halogen and Lead Free Device X - Date code X - Date code Note : ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020C for MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight). Note 1: For other voltage versions, please contact ANPEC for details. Note 2: Because APL5317 and APL5317-12 are identical, the marking of APL5317 is same as APL5317-12. Absolute Maximum Ratings Symbol VIN VSHDN PD TJ TSTG TSDR VIN Supply Voltage (VIN to GND) SHDN Input Voltage (SHDN to GND) Power Dissipation Junction Temperature Storage Temperature (Note 3) Rating -0.3 ~ 6.5 -0.3 ~ 6.5 Internally Limited -40 ~ 150 -65 ~ 150 260 Unit V V W o o o Parameter C C C Maximum Lead Soldering Temperature, 10 Seconds Note 3: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Thermal Characteristics Symbol θJA θJC Parameter Thermal Resistance-Junction to Ambient Thermal Resistance-Junction to Case SOT-23-5 (Note 4) Typical Value SOT-23-5 240 130 Unit o C/W C/W o Note 4 : θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. Recommended Operating Conditions Symbol VIN VOUT IOUT VIN Supply Voltage Output Voltage VOUT Output Current Parameter Range 2.8 ~ 6 0.8 ~ 5.5 0 ~ 300 Unit V V mA C opyright © A NPEC Electronics Corp. Rev. A.4 - Mar., 2009 2 www.anpec.com.tw APL5317 Recommended Operating Conditions (Cont.) Symbol CIN COUT TJ Input Capacitor Output Capacitor Junction Temperature Parameter Range 0.22 ~ 100 1.5 ~ 33 -40 ~ 125 Unit µF µF o C Electrical Characteristics Unless otherwise specified, these specifications apply over VIN = VOUT+1V (min VIN=2.8V), IOUT=0~300mA, CIN = 1µF, COUT = 2.2µF, TA = -40 to 85oC. Typical values are at TA = 25oC. Symbol VIN VOUT IQ VREF Parameter Input Voltage Output Voltage Range Quiescent Current Reference Voltage IOUT =10mA ~300mA Measured on SET, VIN=VOUT+1V(min VIN=2.8V), IOUT=10mA TA=25° C, VIN=VOUT+1V(min VIN=2.8V), IOUT=10mA TA=-40° ~ 85° C C, VIN=VOUT+1V(min VIN=2.8V), IOUT=0~300mA VOUT = 2.5V, IOUT = 300mA VOUT = 3.3V, IOUT = 300mA Power Supply Ripple Rejection Ratio Noise Current-Limit Foldback Current SHDN Input Voltage High SHDN Input Voltage Low Shutdown VIN Supply Current SHDN Pull Low Resistance VOUT Discharge MOSFET RDS(ON) Over Temperature Threshold Over Temperature Hysteresis SET Input Threshold for Fixed/Adjustable Output Voltage Mode SET Input Bias Current TSS Soft-Start Interval VSET=0.8V SHDN = Low SHDN = Low, VIN = 6V VOUT = 0V f = 10kHz, IOUT = 300mA f = 80Hz to 100kHz, IOUT = 300mA Test Conditions Min. 2.8 0.8 APL5317 Typ. 135 0.8 Max. 6 5.5 160 V V µA V Unit Output Voltage Accuracy -1 - +1 % Output Voltage Accuracy -2 450 1.6 -100 - 230 170 45 160 600 80 0.1 3 60 160 40 100 60 +2 360 300 0.4 1 100 - % VDROP PSRR Dropout Voltage mV dB µVRMS mA mA V µA MΩ Ω ° C ° C mV nA µs ILIMIT ISHORT C opyright © A NPEC Electronics Corp. Rev. A.4 - Mar., 2009 3 www.anpec.com.tw APL5317 Typical Operating Characteristics Quiescent Current vs. Supply Voltage 160 140 Quiescent Current, IQ (µA) 120 100 80 60 40 20 0 0 1 2 3 4 5 6 7 Supply Voltage, VIN (V) IOUT= 0mV Quiescent Current vs. Junction Temperature 138 136 Quiescent Current, IQ (µA) 134 132 130 128 126 -50 -25 0 25 50 75 100 125 Junction Temperature, T J (° C) Quiescent Current vs. Output Current 180 160 Quiescent Current, IQ (µA) 140 VIN=5.5V PSRR (dB) 0 -10 -20 PSRR vs. Frequency VIN=3.3V, VOUT=1.2V CIN=1µF, COUT=2.2µF IOUT=300mA 120 100 80 60 0 50 100 -30 -40 -50 -60 VIN=4.5V 150 200 250 300 1000 10000 100000 1000000 Output Current, I OUT (mA) Frequency (Hz) Dropout Voltage vs. Output Current 300 VOUT=2.5V Dropout Voltage, VDROP (mV) 250 200 150 TJ=25° C TJ=75° C TJ=125° C Dropout Voltage vs. Output Current 250 VOUT=3.3V Dropout Voltage, VDROP (mV) 200 TJ=75° C TJ=125° C TJ=25° C 150 100 TJ=0° C TJ=-50° C 100 TJ=-50° C 50 TJ=0° C 50 0 0 100 200 Output Current, I OUT (mA) 300 0 0 100 200 Output Current, IOUT (mA) 300 C opyright © A NPEC Electronics Corp. Rev. A.4 - Mar., 2009 4 www.anpec.com.tw APL5317 Typical Operating Characteristics (Cont.) Loop Gain vs. Frequency 50 40 30 20 Loop Gain (dB) 10 0 -10 -20 -30 -40 1000 10000 100000 1000000 Frequency (Hz) IOUT=300mA 40 20 0 1000 10000 100000 Frequency (Hz) 1000000 IOUT=100mA 160 Phase vs. Frequency 140 120 Phase (degree) 100 80 60 VIN=3.3V, VOUT=1.2V, CIN=1µF, C OUT=2.2µF IOUT=300mA VIN=3.3V, VOUT=1.2V, CIN=1µF, COUT=2.2µF IOUT=100mA Current Limit vs. Junction Temperature 650 VIN=5V Current Limit, ILIMIT (mA) 600 550 500 450 -50 -25 0 25 50 75 Junction Temperature, TJ (° C) 100 125 C opyright © A NPEC Electronics Corp. Rev. A.4 - Mar., 2009 5 www.anpec.com.tw APL5317 Operating Waveforms Load Transient VIN=3.3V, CIN=1µF, COUT=2.2µF, TR=1µs Line Transient CIN=1µF, COUT=2.2µF, TR=10µs, IOUT=10mA V OUT V IN V OUT IOUT CH1 : VOUT, 50mV/div, AC CH2 : IOUT, 100mA/div, DC Time : 100µs/div CH1 : VIN, 1V/div, DC CH2 : VOUT, 20mV/div, AC Time : 100µs/div Enable Shutdown V OUT V OUT V SHDN V SHDN I OUT I OUT CH1 : VOUT, 500mV/div CH2 : VSHDN, 5V/div CH3 : IOUT, 200mA/div Time : 50µs/div CH1 : VOUT, 500mV/Div CH2 : VSHDN, 5V/Div CH3 : IOUT, 200mA/Div DC Time : 10µs/Div C opyright © A NPEC Electronics Corp. Rev. A.4 - Mar., 2009 6 www.anpec.com.tw APL5317 Operating Waveforms (Cont.) Power on Power off V IN V IN V OUT V OUT I OUT I OUT CH1 : VIN, 2V/div CH2 : VOUT, 500mV/div CH3 : IOUT, 100mA/div Time : 200µs/Div CH1 : VIN, 2V/div CH2 : VOUT,, 500mV/div, CH3 : IOUT, 100mA/div Time : 50ms/Div Pin Description PIN NO. 1 2 3 4 5 NAME VIN GND SHDN SET VOUT Voltage supply input pin Ground pin Shutdown control pin, logic high: enable; logic low: shutdown Connect this pin to the ground for fixed output voltage operation. Connect this pin to an external resistor divider for adjustable output voltage mode operation. Regulator output pin FUNCTION C opyright © A NPEC Electronics Corp. Rev. A.4 - Mar., 2009 7 www.anpec.com.tw APL5317 Block Diagram SHDN Shutdown Logic Thermal Shutdown + Foldback Current Limit VIN VOUT 3MΩ Low SET High + GND 0.8V 100mV Typical Application Circuits 1. Fixed Output Voltage Mode VIN APL5317 1 3 VIN SHDN GND 2 VOUT SET 5 4 VOUT CIN 1µF COUT 2.2µF Enable Shutdown 2.2µF/GRM155R60J225M Murata C opyright © A NPEC Electronics Corp. Rev. A.4 - Mar., 2009 8 www.anpec.com.tw APL5317 Typical Application Circuits (Cont.) 2. Adjustable Output Voltage Mode APL5317 1 3 VIN SHDN GND 2 Enable R2 VOUT SET 5 4 R1 VIN VOUT CIN 1µF COUT 2.2µF Shutdown R1   VOUT = 0.8 ⋅  1 +   R2  C opyright © A NPEC Electronics Corp. Rev. A.4 - Mar., 2009 9 www.anpec.com.tw APL5317 Function Description Internal Soft-Start An internal soft-start function controls rising rate of the output voltage to limit the surge current at start-up. The typical soft-start interval is about 80µs. Output Voltage Regulation The APL5317 can work in either fixed or adjustable mode by connecting the SET to GND or a resistor-divider which receives the feedback voltage of the regulator. The output voltage set by the resistor-divider is determined by: R1   VOUT = 0.8 ⋅  1 +  R2   Under-Voltage Lock Out (UVLO) The APL5317 monitors the input voltage to prevent wrong logic control. The UVLO function initiates a soft-start process after input voltage exceeds its rising UVLO threshold during power on. The UVLO function also shuts off the output when the input voltage falls below its falling threshold. Typical UVLO hysteresis voltage is 0.8V. Shutdown Control The APL5317 has an active-low shutdown function. Force SHDN high (>1.6V) enables the VOUT; force SHDN low (