Datasheet For Ape1723y5-hf-3tr By Advanced Power Electronics Corp. Usa

Transcript

Advanced Power Electronics Corp. APE1723-HF-3 200kHz, 1A PWM Buck DC/DC Converter Description Features Adjustable Output Voltage: From 0.745V to 24V Fixed switching frequency of 200kHz Thermal-shutdown and current-limit protection. ON/OFF shutdown control input. Short Circuit Protection (SCP). Operating voltage up to 26V. Output load current up to 1A. Low-power standby mode. Built-in switching transistor on chip. The APE1723 series are monolithic ICs designed as a step-down DC/DC converter, and have the ability to drive a 1A load without an external transistor, saving board space. The external shutdown function can be controlled with logic level signals to put the device into standby mode. The internal compensation provides feedback control for good line and load regulation without external components. Thermal shutdown is provided to prevent damage from over-temperature operation, and current limiting is available to protect the output switch. If the APE1723’s VFB is taken below 0.5V, the switching frequency will be reduced. The APE1723 operates at a fixed switching frequency of 200kHz allowing smaller sized filter components. Other features include a guaranteed ±3% tolerance on output voltage under specified input voltage and output load conditions. The APE1723 is available in a SOT-23-5 or SO-8 package. SO-8 or 5-Lead SOT-23 packages RoHS-compliant, halogen-free. Typical Application L1 VIN=12V C1 100uF C2 0.1uF U1 APE1723 5 VIN SW 1 R3 100k (Refer to table 1) D1 B140A 4 EN ON/OFF C4 0.1uF FB 3 2 Vss Vout=5V/1A R1 6.8k C3 C6 220uF 0.1uF R2 1.2k VOUT = VFB x (1+R1/R2) , VFB= 0.745V, R2 = 0.75kΩ ~4kΩ Ordering information APE1723XX-HF-3TR Packing Type: TR: Tape and reel Package Type: M: SO-8 Y5 : SOT-23-5 Examples: APE1723M-HF-3TR in RoHS-compliant, halogen-free SO-8, shipped on tape and reel (3000 pcs/reel). APE1723Y5-HF-3TR in RoHS-compliant, halogen-free SOT23-5, shipped on tape and reel (3000 pcs/reel). ©2010 Advanced Power Electronics Corp. USA www.a-powerusa.com 200812231-3 1/11 Advanced Power Electronics Corp. APE1723-HF-3 Absolute Maximum Ratings (at T A = 25°C) Maximum Supply Voltage(VIN) -------------------------- +30V Feedback PIN Voltage(VFB) ----------------------------- -0.3V to 12V ON/OFF PIN Voltage(VEN) ------------------------------- -0.3V to VIN Output Voltage to Ground(VOUT) ------------------------ -0.8V Power Dissipation(PD) ------------------------------------- (TJ-TA)/RthJA W Storage Temperature Range(T ST) --------------------- -65°C To 150°C Operating Junction Temperature Range(T OPJ) ----- -40°C To 125°C Operating Supply Voltage(VOP) ------------------------- +4.5V to 26V Thermal Resistance from Junction to Case(Rth JC) SO-8 50°C/W SOT-23-5 Thermal Resistance from Junction to Ambient(RthJA) 180°C/W SO-8 120°C/W SOT-23-5 250°C/W Note. Rth JA is measured with the PCB copper area (must be connected to V SS pins) of approx. 1.5 in 2 (multi-layer) Electrical Characteristics (VCC=12V, VOUT=3.3V, ILOAD=0.3A, TA=25°C, unless otherwise specified) Parameter SYM Feedback Voltage VFB Quiescent Current IQ TEST CONDITION IOUT=0.3A VFB=1.2V force driver off MIN 0.723 TYP MAX UNITS 0.745 0.767 V - 3.5 6 mA Feedback Bias Current IFB IOUT=0.1A - -10 -50 nA Shutdown Supply Current ISD VEN =0V - 2 10 uA 140 200 260 kHz - 50 - kHz Oscillator Frequency Oscillator Frequency of Short-Circuit Protection Max. Duty Cycle (ON) Min. Duty Cycle (OFF) FOSC FSCP DC Current Limit ILIMIT Saturation Voltage VSA T SW Pin=0V SW Pin Leakage current ISWL (Adjustable) When VFB<0.5V VFB=1.2V force driver off - 0 - VFB=0V force driver on - 100 - 1.2 - - A - 1.2 1.5 V - - -200 uA -5 - mA Pear current, No outside circuit V FB=0V force driver on IOUT=1A, No outside circuit VFB=0V force driver on VIN=26V, No outside circuit VFB=1.0V force driver off - EN Pin Logic Input Threshold Voltage VIH High (regulator ON) - VIL Low (regulator OFF) EN Pin Logic Input Current IH VEN=2.5V (ON) 0.5 - 20 - VEN=0.3V (OFF) - -5 - - 145 - SW Pin=-0.8V EN Pin Input Current Thermal Shutdown Temp IL TSD - % 2 V uA °C THIS PRODUCT IS SENSITIVE TO ELECTROSTATIC DISCHARGE, PLEASE HANDLE WITH CAUTION. USE OF THIS PRODUCT AS A CRITICAL COMPONENT IN LIFE SUPPORT OR OTHER SIMILAR SYSTEMS IS NOT AUTHORIZED. APEC DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. APEC RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. ©2010 Advanced Power Electronics Corp. USA www.a-powerusa.com 2/11 Advanced Power Electronics Corp. APE1723-HF-3 Block Diagram EN 200mV VIN 220mV CURRENT SOURCE BIAS 0.745V REFERENCE 2.5V REGULATOR START UP + _ COMP. Current limit _ OSC. COMP. + + AMP _ + CONTROL + DRIVER COMP. _ FB COMP. SW Vss Thermal Shutdown Pin Assignment (Top View) SW 1 VSS 2 FB 3 ( Top View ) 5 4 VIN EN 1 8 SW 2 7 NC EN 3 6 VIN VSS 4 5 FB SOT-23-5 PIN SYMBOL VSS FB NC NC SO-8 PIN DESCRIPTION GND Pin Feedback Pin Power -Off Pin EN H : Normal Operation(Step-down) L : Step-down Operation Stopped (All circuits deactivated) SW Switch Output VIN Operating Voltage Input NC No Connect Pin ©2010 Advanced Power Electronics Corp. USA www.a-powerusa.com 3/11 Advanced Power Electronics Corp. APE1723-HF-3 Functional Pin Descriptions VIN This is the positive input supply for the IC switching regulator. A suitable input bypass capacitor must be connected at this pin to minimize voltage transients and to supply the switching currents needed by the regulator. VSS Circuit ground. SW Internal switch. The voltage at this pin switches between (+VIN – VSAT) and approximately – 0.5V, with a duty cycle of approximately VOUT / VIN. To minimize coupling to sensitive circuitry, the PC board copper area connected to this pin should be minimized. FB Senses the regulated output voltage to complete the feedback loop. EN Allows the switching regulator circuit to be shutdown using logic level signals, thus dropping the total input supply current to approximately 10uA. Pulling this pin below a threshold voltage of approximately 0.5V shuts the regulator down, and pulling this pin above 2.0V (up to a maximum of VIN) turns the regulator on. ©2010 Advanced Power Electronics Corp. USA www.a-powerusa.com 4/11 Advanced Power Electronics Corp. APE1723-HF-3 Typical Application C1 100uF Vout=5V/1A L1 VIN=12V C2 0.1uF R3 100k U1 APE1723 5 VIN SW 1 D1 B140A 4 C4 0.1uF (Refer to table 1) EN ON/OFF R1 6.8k C3 C6 220uF 0.1uF R2 1.2k FB 3 2 Vss VOUT = VFB x (1+R1/R2) , VFB= 0.745V, R2 = 0.75kΩ ~4kΩ Table 1: Resistor selection for setting the output voltage VOUT R2 R1 5V 1.2kΩ 6.8kΩ 3.3V 2.4kΩ 8.2kΩ 2.5V 2kΩ 4.7kΩ 1.8V 3.3kΩ 4.7kΩ 1.5V 2kΩ 2kΩ 1.3V 2kΩ 1.5kΩ 1.2V 2kΩ 1.2kΩ L1 recommended value (VIN=12V, IOUT=1A) VOUT 1.8V 2.5V 3.3V 5V L1 Value 33uH 33uH 47uH 47uH ©2010 Advanced Power Electronics Corp. USA www.a-powerusa.com 5/11 Advanced Power Electronics Corp. APE1723-HF-3 VFB vs. Iout VFB vs. Temperature (Vin=12V) (Vin=12V, Iout=300mA) 0.76 0.76 0.755 0.755 0.75 0.75 VFB (V) VFB (V) Typical Characteristics 0.745 0.745 0.74 0.74 0.735 0.735 0.73 0.73 100 300 500 800 1000 -40 1200 -20 0 25 50 85 105 125 Temperature (°C) Iout (mA) Iccq vs. Temperature Iccq vs. Vin (Vin=12V) 4.4 4 4 3.6 3.6 Iccq (mA) Iccq (mA) 4.4 3.2 2.8 3.2 2.8 2.4 2.4 2 2 4.5V 8V 12V 16V 20V 24V -40 -20 26V 0 25 50 85 105 125 Temperature (°C) Vin (V) Frequency vs. Temperature Frequency vs. Vin (Vin=12V, I out=300mA) 260 260 Frequency (kHz) Frequency (kHz) 240 220 200 180 160 240 220 200 180 160 140 140 4.5V 8V 12V 16V Vin(V) ©2010 Advanced Power Electronics Corp. USA www.a-powerusa.com 20V 24V 26V -40 -20 0 25 50 85 105 125 Temperature (°C) 6/11 Advanced Power Electronics Corp. APE1723-HF-3 Typical Characteristics Fscp vs. Temperature Fscp vs. Vin 59 80 57 70 55 60 Fscp (kHz) Fscp (kHz) (Vin=12V) 53 51 50 40 30 49 20 47 10 0 45 4.5V 8V 12V 16V 20V 24V -40 26V -20 0 25 50 85 105 125 Vin(V) Temperature (°C) Current Limit vs. Vin Current Limit vs. Temperature 1.9 1.7 1.7 Current Limit (A) Current Limit (A) (Vin=12V) 1.9 1.5 1.3 1.1 0.9 1.5 1.3 1.1 0.9 0.7 0.7 0.5 0.5 4.5V 8V 12V 16V 20V 24V -40 26V -20 0 50 85 105 125 Ishutdown vs. Temperature Saturation Voltage vs. Iout (Vin=12V) (Vin=12V) 1.6 6 1.4 5 Ishutdown (uA) Saturation Voltage (V) 25 Temperature (°C) Vin(V) 1.2 1 0.8 4 3 2 1 0.6 0 0.4 100 300 500 800 Iout (mA) ©2010 Advanced Power Electronics Corp. USA www.a-powerusa.com 1000 1200 -40 -20 0 25 50 85 105 125 Temperature (°C) 8/11 Advanced Power Electronics Corp. APE1723-HF-3 Typical Characteristics Efficiency vs. Iout Efficiency vs. Iout (Vin=8V, Vout=5V) (Vin=12V, Vout=5V) 90% 86% 86% EFFICIENCY EFFICIENCY 90% 82% 78% 74% 82% 78% 74% 70% 200 500 800 1000 Iout (mA) Output Ripple (Vin=12V, Vout=5V, Iout=1A) EN Off to ON Test (Vin=12V, Vout=5V, Iout=1A) ©2010 Advanced Power Electronics Corp. USA www.a-powerusa.com 70% 200 500 800 1000 Iout (mA) Output Ripple (Vin=24V, Vout=5V, Iout=1A) EN Off to ON Test (Vin=24V, Vout=5V, Iout=1A) 8/11 Advanced Power Electronics Corp. APE1723-HF-3 Typical Characteristics Load Transient (Vin=12V, Vout=5V, Iout=0.1~1A) ©2010 Advanced Power Electronics Corp. USA www.a-powerusa.com Load Transient (Vin=24V, Vout=5V, Iout=0.1~1A) 8/11 Advanced Power Electronics Corp. APE1723-HF-3 Package Dimensions: SO-8 D 8 7 Millimeters 6 5 2 3 MIN NOM MAX A 1.35 1.55 1.75 A1 0.10 0.18 0.25 B 0.33 0.41 0.51 C 0.19 0.22 0.25 D 4.80 4.90 5.00 E1 3.80 3.90 4.00 E 5.80 6.15 6.50 L 0.38 0.71 1.27 θ 0 4.00 8.00 E E1 1 SYMBOLS 4 e e B 1.27 TYP A A1 DETAIL A L θ 1. All dimensions are in millimeters. 2. Dimensions do not include mold protrusions. c DETAIL A Marking Information: Product : APE1723 1723M YWWSSS Package: M = RoHS-compliant halogen-free SO-8 Date/lot code (YWWSSS) Y: Last digit of the year WW: Work week SSS: Lot code sequence ©2011 Advanced Power Electronics Corp. USA www.a-powerusa.com 10/11 Advanced Power Electronics Corp. APE1723-HF-3 Package Dimensions: SOT-23-5L Millimeters SYMBOLS MIN NOM MAX A 1.00 1.10 1.30 A1 0.00 --- 0.10 A2 0.70 0.80 0.90 b 0.35 0.40 0.50 C 0.10 0.15 0.25 D 2.70 2.90 3.10 E 1.50 1.60 1.80 e --- 1.90(TYP) --- H 2.60 2.80 3.00 L 0.37 --- --- 1 1° 5° 9° e2 --- 0.95(TYP) --- Note 1: Package body sizes exclude mold flash protrusions or gate burrs. Note 2: Tolerance ± 0.1000 mm (4mil) unless otherwise specified. Note 3: Coplanarity:0.1000 mm Note 4: Dimension L is measured in gage plane. Marking Information Product: N1Y = APE1723 N1YWS Date/lot code For details of how to convert this to standard YYWW date code format, please contact us directly. ©2010 Advanced Power Electronics Corp. USA www.a-powerusa.com 11/11