AP7173_09 DIODES | Alldatasheet

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Technical content

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 1 of 16 OCTOBER 2009 DS31369 www.diodes.com © Diodes Incorporated

  • Low V IN and wide VIN range: 1.0V to 5.5V
  • Bias voltage (V VCC) range: 2.7V to 5.5V
  • Low V OUT range: 0.8V to 3.3V
  • Low dropout: 165mV typical at 1.5A, V VCC = 5V
  • 2% accuracy over line, load and temperature range
  • Power-Good (PG) output for supply monitoring and for sequencing of other supplies
  • Programmable soft-start provides linear voltage startup
  • Bias supply permits low V IN operation with good transient response
  • Stable with any output capacitor ≥ 2.2µF
  • DFN3030-10 and SOP-8L-EP: available in “Green” molding compound (No Br, Sb)
  • Lead-free finish/ RoHS Compliant (Note 1) The AP7173 is a 1.5A low-dropout (LDO) linear regulator that features a user-programmable soft-start, an enable input and a power-good output. The soft-start reduces inrush current of the load capacitors and minimizes stress on the input power source during start-up. The enable input and power-good output allow users to configure power management solutions that can meet the sequencing requirements of FPGAs, DSPs, and other applications with different start-up and power-down requirements. The AP7173 is stable with any type of output capacitor of 2.2µF or more. A precision reference and feedback control deliver 2% accuracy over load, line, and operating temperature ranges. The AP7173 is available in both DFN3030-10 and SOP-8L-EP packages.
  • PCs, Servers, Modems, and Set-Top-Boxes
  • FPGA Applications
  • DSP Core and I/O Voltages
  • Post-Regulation Applications
  • Applications With Sequencing Requirements Typical Application Circuit EN PG VCC IN OUT FB SS GND AP7173 VOUT VIN VVCC CSS

Figure 1. Typical Application Circuit (Adjustable Output)

Applications

Table 1. Resistor Values for Programming the Output Voltage (Note 3) Table 2. Capacitor Values for Programming the Soft-Start Time (Note 4) Figure 2. Turn-On Response

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 3 of 16 OCTOBER 2009 DS31369 www.diodes.com © Diodes Incorporated

Ordering Information

FN : DFN3030-10 SP : SOP-8L-EP G : Green 7/13 : Tape & Reel 7”/13” Tape and Reel Device Package Code Packaging (Note 2) Quantity Part Number Suffix AP7173-FNG-7 FN DFN3030-10 3000/Tape & Reel -7 AP7173-SPG-13 SP SOP-8L-EP 2500/Tape & Reel -13 Notes: 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 Assignments ( Top View ) FB EN IN GND OUT PG VCC IN SS OUT DFN3030-10 SOP-8L-EP SSVCC EN IN FB GND OUT ( Top View ) PG

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 4 of 16 OCTOBER 2009 DS31369 www.diodes.com © Diodes Incorporated Pin Descriptions PIN # Pin Name SOP-8L-EP DFN3030-10 Description IN 1 1, 2 Power Input pin. PG 2 3 Power-Good pin, open-drain output. When the VOUT is below the PG threshold the PG pin is driven low; when the VOUT exceeds the threshold, the PG pin goes into a high-impedance state. To use the PG pin, use a 10kΩ to 1MΩ pull-up resistor to pull it up to a supply of up to 5.5V, which can be higher than the input voltage. VCC 3 4 Bias Input pin, provides input voltage for internal control circuitry. This voltage should be higher than the V IN. EN 4 5 Enable pin. This pin should be driven either high or low and must not be floating. Driving this pin high enables the regulator, while pulling it low puts the regulator into shutdown mode. GND 5 6 Ground. SS 6 7 Soft-Start pin. Connect a capacitor between this pin and the ground to set the soft-start ramp time of the output voltage. If no capacitor is connected, the soft-start time is typically 100µS. FB 7 8 Feedback pin. Connect this pin to an external voltage divider to set the output voltage. OUT 8 9, 10 Regulated Output pin. Thermal Pad — — Solder this pad to large ground plane for increased thermal performance. Block Diagram Gate Driver Current Limit and Thermal Shutdown 0.8V 0.72V OUT SS FB GND IN VCC PG EN

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 5 of 16 OCTOBER 2009 DS31369 www.diodes.com © Diodes Incorporated Absolute Maximum Ratings (Note 5) Symbol Parameter Ratings Unit ESD HBM Human Body Model ESD Protection 4000 V ESD MM Machine Model ESD Protection 350 V VIN, VVCC Input Voltage Range -0.3 to +6 V VEN Enable Voltage Range -0.3 to +6 V VPG Power-Good Voltage Range -0.3 to +6 V VSS Soft-Start Voltage Range -0.3 to +6 V VFB Feedback Voltage Range -0.3 to +6 V VOUT Output Voltage Range -0.3 to VIN +0.3 V IOUT Maximum Output Current Internally Limited TJ Junction Temperature Range -40 to +150 ºC TST Storage Junction Temperature Range -65 to +150 ºC Notes: 5. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are s tress ratings only and functional operation of the device at these conditions is not implied. Exposure to absolute-maximum-rated con ditions for extended periods m a y a f f e c t d e v i c e r e l i a b i l i t y . Recommended Operating Conditions Symbol Parameter Min Max Unit VIN Input Voltage (Note 6) 1.0 5.5 V VVCC Bias Voltage 2.7 5.5 V IOUT Output Current 0 1.5 A TA Operating Ambient Temperature -40 85 ºC Notes: 6. At V IN =1V, the maximum load currents may be lower than 1.5A.

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 6 of 16 OCTOBER 2009 DS31369 www.diodes.com © Diodes Incorporated

Electrical Characteristics

At VEN = 1.1V, VIN = VOUT + 0.5V, CVCC = 0.1uF, CIN = COUT = 10uF, IOUT = 50mA, VVCC = 5.0V, and TA = –40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. Symbol Parameter Test Conditions Min Typ. Max Unit VIN Input Voltage Range VOUT + VDO 5.5 V VVCC Bias Pin Voltage Range (Note 7) 2.7 5.5 V VREF Internal Reference (Adj.) TA = +25 ºC 0.792 0.8 0.808 V Output Voltage Range V IN= 5V, IOUT= 1.5A 0.8 3.3 V VOUT Accuracy (Note 8) 2.97V≤VVCC≤5.5V, 50mA≤IOUT≤1.5A –2 ±0.5 2 % ∆VOUT /∆VIN / VOUT Line Regulation V OUT (NOM) + 0.5≤VIN, 5.5V 0.03 %/V ∆VOUT /VOUT /∆IOUT Load Regulation 50mA ≤IOUT≤1.5A 0.09 %/A IOUT = 1.5A,VVCC–VOUT(NOM)≥3.25V 165 270 mV VDO Dropout Voltage (Note 9) IOUT= 1.5A, VIN = VVCC 1.5 1.7 V ICL Current Limit V OUT = 80% x VOUT (NOM) 2 3 4 A ISHORT Short-Circuit Current V OUT < 0.2V 0.6 1 A IVCC Bias Pin Current 1 2 mA ISHDN Shutdown Supply Current (I GND) VEN≤0.4V 1 50 µA IFB Feedback Pin Current –1 0.1 1 µA 1KHz, IOUT= 1A, VIN= 1.8V, VOUT= 1.5V 60 Power-Supply Rejection IN to VOUT) 300KHz, IOUT =1A, VIN= 1.8V, VOUT =1.5V 30 dB 1KHz, IOUT = 1A, VIN= 1.8V, VOUT =1.5V 50 PSRR Power-SupplyRejection VCC to VOUT) 300KHz, IOUT = 1A, VIN= 1.8V, VOUT =1.5V 30 dB TST Startup Time R LOAD for IOUT = 1.0A, CSS = open 100 µS ISS Soft-Start Charging Current V SS= 0.4V 440 nA VEN, HI Enable Input High Level 1.1 5.5 V VEN, LO Enable Input Low Level 0 0.4 V VEN, HYS Enable Pin Hysteresis 50 mV IEN Enable Pin Current V EN= 5V 0.1 1 µA VPG, TH PG Trip Threshold V OUT decreasing 85 90 94 %V OUT VPG, HYS PG Trip Hysteresis 3 %V OUT VPG, LO PG Output Low Voltage I PG= 1mA (sinking), VOUT<VPG, TH 0.3 V IPG, LKG PG Leakage Current V PG= 5.25V, VOUT>VPG, TH 0.1 1 µA Shutdown, temperature increasing +150 TSD Thermal Shutdown Temperature Reset, temperature decreasing +130 ºC DFN3030-10 (Note 10) 38 θJA Thermal Resistance Junction-to-Ambient SOP-8L-EP (Note 11) 30 oC/W N o t e s : 7 . VVCC should be higher or equal to VIN in this chip. 8. Tested at 0.8V; resistor tolerance is not taken into account. 9. Dropout is defined as the voltage from V IN to VOUT when VOUT is 3% below nominal. 10. Test condition for DFN3030-10: Device mounted on FR-4 substrate (2s2p), 2"*2" PCB, with 2oz copper trace thickness and large pad pattern. 11. Test condition for SOP-8L-EP: Device mounted on FR-4 substrate (2s2p), 2"*2" PCB, with 2oz copper trace thickness and lar ge pad pattern.

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 7 of 16 OCTOBER 2009 DS31369 www.diodes.com © Diodes Incorporated Typical Performance Characteristics At TA = +25℃, VIN = VOUT(TYP) + 0.3V, VVCC = 5V, IOUT = 50mA, VEN = VIN, CIN = 1µF, CVCC = 4.7µF, and COUT = 10µF, unless otherwise noted. VIN L I N E R E G U L A T I O N V VCC LINE REGULATION -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 0.15 0.20 change in Vout(%) Vin-Vout(V) -40 o C o C 125 o C -0.5 -0.4 -0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 Vout(V) Vvcc-Vout(V) -40 o C o C 125 o C F i g u r e 3 F i g u r e 4 LOAD REGULATION LOAD REGULATION 50 200 350 500 650 800 950 1100 1250 1400 -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 Change Vout(%) Iout(mA) 1500 -40 o C o C 125 o C F i g u r e 5 F i g u r e 6 V IN D R O P O U T V O L T A G E v s . VIN DROPOUT VOLTAGE vs. I OUT AND TEMPERATURE(TA) ( V VCC-VOUT) AND TEMPERATURE(TA) 100 120 140 160 180 200 220 240 -40 o C o C 125 o C VDropout(Vin-Vout)(V) Iout(mA) 100 120 140 160 180 200 220 240 260 280 300 VDropout(Vin-Vout)(mV) Vvcc-Vout(V) Iout=1.5A -40 o C o C 125 o C F i g u r e 7 F i g u r e 8

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 8 of 16 OCTOBER 2009 DS31369 www.diodes.com © Diodes Incorporated Typical Performance Characteristics (Continued) At TA = +25℃, VIN = VOUT(TYP) + 0.3V, VVCC = 5V, IOUT = 50mA, VEN = VIN, CIN = 1µF, CVCC = 4.7µF, and COUT = 10µF, unless otherwise noted. VIN D R O P O U T V O L T A G E v s . VVCC DROPOUT VOLTAGE vs. (VVCC-VOUT) AND TEMPERATURE(TA) I OUT AND TEMPERATURE(TA) 100 120 140 160 180 200 VDropout(Vin-Vout)(mV) Vvcc-Vout Iout=0.5A -40 o C o C 125 o C 600 800 1000 1200 1400 1600 1800 2000 VDropout(Vvcc-Vout)(mV) Iout(A) -40 o C o C 125 o C F i g u r e 9 F i g u r e 1 0 V IN P S R R v s . F R E Q U E N C Y V VCC PSRR vs. FREQUENCY 10 100 1000 10000 100000 Power Supply Rejection Ratio(dB) Frequency(Hz) Vin=1.8V Vout=1.2V Vvcc=5V Css=1nF 500000 Io=0.1A Io=1.5A 10 100 1000 10000 100000 1000000 1E7 Power Supply Rejection Ratio(dB) Frequency(Hz) Vin=1.8V Vout=1.2V Vvcc=5V Css=1nF Io=0.1A Io=1.5A F i g u r e 1 1 F i g u r e 1 2 VIN PSRR vs. (VIN-VOUT) LOW-LEVEL PG VOLTAGE vs. CURRENT Power Supply Rejection Ratio(dB) Vin-Vout(V) 1KHz 10KHz 100KHz 500KHz Vout=1.2V Iout=1.5A Css=1nF 02468 1 0 1 2 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 VoL Low-Level PG Voltage(V) PG Current(mA) F i g u r e 1 3 F i g u r e 1 4

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 9 of 16 OCTOBER 2009 DS31369 www.diodes.com © Diodes Incorporated Typical Performance Characteristics (Continued) At TA = +25℃, VIN = VOUT(TYP) + 0.3V, VVCC = 5V, IOUT = 50mA, VEN = VIN, CIN = 1µF, CVCC = 4.7µF, and COUT = 10µF, unless otherwise noted. VIN LINE TRANSIENT V VCC LINE TRANSIENT F i g u r e 1 5 F i g u r e 1 6 OUTPUT LOAD TRANSIENT TURN-ON RESPONSE F i g u r e 1 7 F i g u r e 1 8 VCC PIN CURRENT vs. VCC PIN CURRENT vs. I OUT AND TEMPERATURE (TA) V VCC AND TEMPERATURE (TA) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Ivcc(mA) Iout(A) -40 o C o C 125 o C 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 Ivcc(mA) Vvcc(V) -40 o C o C 125 o C F i g u r e 1 9 F i g u r e 2 0

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 10 of 16 O C T O B E R 2 0 0 9 DS31369 www.diodes.com © Diodes Incorporated Typical Performance Characteristics (Continued) At TA = +25℃, VIN = VOUT(TYP) + 0.3V, VVCC = 5V, IOUT = 50mA, VEN = VIN, CIN = 1µF, CVCC = 4.7µF, and COUT = 10µF, unless otherwise noted. QUIESCENT CURRENT vs. IO U T QUIESCENT CURRENT vs. VVCC 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25 Quiescent Current(IGND) (mA) Iout(A) Vout=1.2V pg Vin=1.8V Vin=2.5V 0.50 0.75 1.00 1.25 1.50 Quiescent Current(mA) Vvcc(V) Vin=1.8V Vout=1.2V Io=0A Io=0.5A Io=1.5A F i g u r e 2 1 F i g u r e 2 2 QUIESCENT CURRENT vs. TEMPERATURE CURRENT LIMIT vs. (VVCC – VOUT) -50 -25 0 25 50 75 100 125 0.50 0.75 1.00 1.25 1.50 Quiescent Current(mA) Temperature( o Vin=1.8V Vout=1.2V Vvcc=3.3V Vvcc=5V 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 Current limit(A) Vvcc-Vout(V) -40 o C25 o C 125 o C F i g u r e 2 3 F i g u r e 2 4 SOFT-START CHARGING CURRENT (I SS) vs. TEMPERATURE POWER-UP/POWER-DOWN -50 -25 0 25 50 75 100 125 300 325 350 375 400 425 450 475 500 Iss(nA) Temperature( o F i g u r e 2 5 F i g u r e 2 6

where an RC circuit is used to delay start the AP7173. measures are taken for the EN pin. Figure 30. Delayed Start Using an RC Circuit pulled to low by an internal MOSFET. protects the device from damage as a result of overheating.

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 13 of 16 O C T O B E R 2 0 0 9 DS31369 www.diodes.com © Diodes Incorporated (1) DFN3030-10 ( Top View ) XX XX : Identification Code X : A~Z : Green Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week Y W X Part Number Package Identification Code AP7173 DFN3030-10 BA (2) SOP-8L-EP ( Top View ) AP7173 YY WW X X Logo Part No. E WW : Week : 01~52; 52 YY : Year : 08, 09,10~ G : Green X : Internal Code represents 52 and 53 week SOP-8L-EP Marking Information

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 14 of 16 O C T O B E R 2 0 0 9 DS31369 www.diodes.com © Diodes Incorporated Package Information (All Dimensions in mm) (1) Package Type: DFN3030-10 Bottom View Side View 0.57/0.60 0/0.05 0.15Typ. 0.10 C

0.08 C Seating Plane

C 2.9/3.1 2.3/2.5 2.9/3.1 0.50Typ. 0.2/0.3 1.5/1.7 (Pin #1 ID) AB

0.10 C AB

0.25 A 2X- 0.25 B 2X- 0.25/0.55 R0.300 0.375Typ. TOP MARK (2) Package Type: SOP-8L-EP 1.27typ 0.3/0.5 7°~9° 4.85/4.95 3.85/3.95 5.90/6.10 0.15/0.25 7°~9° 3.70/4.10 0.62/0.82 0/0.13 Gauge Plane0.254 Seating Plane 0.35max. 45° Detail "A" Detail "A" 1.30/1.50 1.75max. Bottom View 2.4Ref. 3.3Ref. Exposed pad 8x-0.60 Land Pattem Recommendation (Unit:mm) Exposed pad 5.4 8x-1.55 6x-1.27

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 15 of 16 O C T O B E R 2 0 0 9 DS31369 www.diodes.com © Diodes Incorporated For DFN3030-10 Notes: 12. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf Taping Orientation

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 7 16 of 16 O C T O B E R 2 0 0 9 DS31369 www.diodes.com © Diodes Incorporated IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDING 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 Incorpora ted 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 expect ed 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 dev ices 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