AP7173 DIODES | Alldatasheet

Document overview

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Technical content

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 4 1 of 15 MARCH 2008 www.diodes.com © Diodes Incorporated Features General Description 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.

  • Low VIN and wide VIN range: 1.0V to 5.5V
  • Bias voltage (VVCC) range: 2.7V to 5.5V • Low VOUT range: 0.8V to 3.3V 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.
  • 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 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.
  • 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)

Applications

  • PCs, Servers, Modems, and Set-Top-Boxes
  • FPGA Applications
  • DSP Core and I/O Voltages • Post-Regulation Applications
  • Applications With Sequencing Requirements

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-FN FN DFN3030-10 3000/Tape & Reel -7 AP7173-SP SP SOP-8L-EP 2500/Tape & Reel -13 2. Pad layout as shown on Diodes Inc. suggested pad layout document can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 4 2 of 15 MARCH 2008 www.diodes.com © Diodes Incorporated 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 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 VIN. 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.

Figure 1. Typical Application Circuit (Adjustable Output)

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

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 4 5 of 15 MARCH 2008 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 Ma ximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operat ion of the device at these conditions is not implied. Exposure to absolute-maximum-rated conditions 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. 4 6 of 15 MARCH 2008 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 VIN= 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 % ΔVOUT /ΔVIN / VOUT Line Regulation VOUT (NOM) + 0.5≤VIN, 5.5V 0.03 %/V ΔVOUT /VOUT /ΔIOUT 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 VOUT = 80% x VOUT (NOM) 2 3 4 A ISHORT Short-Circuit Current VOUT < 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 RLOAD 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 VEN= 5V 0.1 1 µA VPG, TH PG Trip Threshold VOUT decreasing 85 90 94 %VOUT VPG, HYS PG Trip Hysteresis 3 %VOUT VPG, LO PG Output Low Voltage IPG= 1mA (sinking), VOUT<VPG, TH 0.3 V IPG, LKG PG Leakage Current VPG= 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 Notes: 7. V VCC should be higher or equal to VIN in this chip. 8. Tested at 0.8V; resistor to lerance 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 su bstrate (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 subs trate (2s2p), 2"*2" PCB, with 2oz copper trace thickness and large pad pattern.

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 4 7 of 15 MARCH 2008 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. 4 8 of 15 MARCH 2008 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 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. 4 9 of 15 MARCH 2008 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. V IN L I N E T R A N S I E N T 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. 4 10 of 15 MARCH 2008 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) - 5 0 - 2 50 2 55 07 5 1 0 0 1 0.50 0.75 1.00 1.25 1.50 2 5 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 - 5 0 - 2 50 2 55 07 5 1 0 0 1 2 300 325 350 375 400 425 450 475 500 Iss(nA) Temperature( o F i g u r e 2 5 F i g u r e 2 6

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. 4 13 of 15 MARCH 2008 www.diodes.com © Diodes Incorporated (1) DFN3030-10 Y : Year 0~9 M : Month A~L ( Top View ) X : A~Z : Green YM X XX XX : BA : AP7173 Part Number Package Identification Code AP7173 DFN3030-10 BA (2) SOP-8L-EP ( Top View ) AP7173 YY WW X X E Logo Part No . Internal code Year : "07" = 2007 Xth week : 01~ 52 G : Green E : SOP-8L-EP "08" = 2008 Marking Information

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 4 14 of 15 MARCH 2008 www.diodes.com © Diodes Incorporated Package Information (All Dimensions in mm) (1) 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) SOP-8L-EP 1.27typ 0.3/0.5 7°~9° 4.80/5.30 3.70/4.10 5.79/6.20 0.20typ 7°~9° 3.70/4.10 0.38/1.27 0.08/0.25 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 Exposed pad 5.4 8x-1.55 6x-1.27

1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START AP7173 Rev. 4 15 of 15 MARCH 2008 www.diodes.com © Diodes Incorporated Taping Orientation Notes: 12. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf IMPORTANT NOTICE LIFE SUPPORT Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products 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 our website, harmless against all damages. Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.