HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR Typical Applications Features The HMC976LP3E is ideal for: High Output Current: 400mA • Test Instrumentation Low Dropout: 300mV at 400mA Output and VR>3V • Military Radios, Radar and ECM Ultra Low Noise: 3nV/√Hz at 10 kHz, 6nV/√Hz at 1 kHz • Basestation Infrastructure High Power Supply Rejection Ratio(PSRR): • Ultra Low Noise Frequency Generation • Fractional-N Synthesizer Supply Adjustable Voltage Output: VR 1.8 to 5V at 400mA • Microwave VCO Supply Designed to work with low ESR ceramic capacitors • Mixed-Signal Circuit Supply Low Power-Down Current: <1 µA • Low Noise Baseband Circuit Supply Thermal Protection <-60 dB at 1 kHz, <-30 dB at 1 MHz 16 Lead 3x3 mm SMT Package: 9mm² Functional Diagram General Description POWER CONDITIONING - SMT 9 The HMC976LP3E is a BiCMOS ultra low noise linear voltage regulator. The high Power Supply Rejection Ratio (PSRR) in the 0.1 MHz to 10 MHz range provides excellent rejection of any preceding switching regulator or other power supply noise. The voltage output is ideal for frequency generation subsystems including Hittite’s broad line of PLLs with integrated VCOs. The output voltage can be adjusted lower than the default value by using one external resistor. The output can be set to 5V by grounding the HV pin. The regulator can be powered down by the TTL-compatible Enable input. The HMC976LP3E is housed in a 3x3mm QFN SMT package. Table 1. Electrical Specifications, TA = +25 °C Parameter Conditions Min Typ Max Units Vdd = 5.5V; Maximum load current 4.7 4.8 4.9 V Output Voltage VR (5V setting) Vdd = 5.5V; Maximum load current 4.9 5 5.1 V Output Voltage Tolerance Vdd = 5.5V; Maximum load current; Default and 5V setting 2 % Input Voltage Range (Default) Output Voltage VR (Default) Default output voltage configuration 5.1 5.5 V Input Voltage Range VR>3V[1] VDD>VR+0.3V 3.3 5.5 V Input Voltage Range VR<3V[1] 3.3 5.5 V [1] See Absolute Maximum Ratings Table “Absolute Maximum Ratings” 9-1 For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR Table 1. Electrical Specifications (Continued) Conditions Min Output Voltage Range VR Set by external resistors. 1.8 Reference Voltage VREF Vdd = 5.5V; REF cannot source/sink external current Output Current VR [1] Output Noise Spectral Density 10 Hz 100 Hz 1 kHz 10 kHz 100 kHz Integrated Output Noise 100 Hz to 100 kHz Load Regulation, VR PSRR 1 kHz 10 kHz 100 kHz 1 MHz 10 MHz 50 MHz Output Voltage Variation vs. Package Base Temperature 25°C to 85°C -40°C to 25°C Current Consumption (IGND) Power Down Current Start-Up Transient Time Typ Max Units 5.1 V 1.17 TA = -40°C to +85°C V 400 Vdd = 5.5V; VR = 5.0V Measured on Application Schematic [3] Maximum Load Current Vdd = 5.5V; VR = 5.0V [3] 4000 120 6 3 3 nV/rtHz 1.5 µVrms Vdd = 5.5V; VR=5.0V 0.01 -70 -65 -45 -35 -30 -20 Vdd = 5.5V; VR=5.0V Maximum load current Vdd = 5.5V; VR=5.0V Maximum load current Ven = Vdd = 5.5V; Maximum Load Current mA % / mA dB 0.005 0.005 0.01 0.01 % / °C % / °C 1.1 1.5 mA 1 µA 200 ms Vdd = 5.5V; EN = Low; Output is floating (high - impedance) in Power-Down mode 0 to 90% of final voltage Vdd = 5.5V[3] Enable Input EN High Level Vdd>=VEN 2 Vdd V Enable Input EN Low Level Vdd>=VEN 0 0.8 V To guarantee stability, noise and PSRR Output Load Capacitance [2] Thermal Protection Threshold Junction Temperature Thermal Protection Hysteresis performance [3] 4.7 µF 115 °C 10 °C 9 POWER CONDITIONING - SMT Parameter [1] The regulator does not include short-circuit protection circuitry. The outputs will withstand short-circuit conditions for a duration <10s. [2] HMC976LP3E was designed to work with low ESR ceramic capacitors connected to pin 4 VRX. [3] See HMC976LP3E 5.0V User Application Schematic herein For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] 9-2 HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR 10 -5 10 -6 10 -7 10 -8 10 -9 10 Vout=3.3V Output Noise Spectral Density [2] C3=1uF C2=10uF NOISE VOLTAGE (V/rtHz) NOISE VOLTAGE (V/rtHz) Vout=5V Output Noise Spectral Density [1] C3=1uF C2=1uF C3=4.7uF C2 =4.7uF 1 10 -5 10 -6 10 -7 10 -8 10 -9 C3=4.7uF C2=4.7uF C3=4.7uF C2=10uF -10 10 10 2 10 3 10 4 10 5 10 6 10 7 10 10 8 -10 10 1 10 2 10 3 10 FREQUENCY (Hz) 10 VIN-VOUT=0.5V 9 6 10 7 10 8 VIN-VOUT=0.25V -30 VIN-VOUT=0.4V -40 PSRR (dB) -40 PSRR (dB) 10 -20 -20 -30 5 Vout=3.3V PSRR vs. Vin-Vout [2] Vout 4.8V PSRR vs. Vin-Vout [3] -50 VIN-VOUT=0.6V -60 -50 VIN-VOUT=0.8V -60 VIN-VOUT=1.0V -70 VIN-VOUT=1.7V VIN-VOUT=0.8V -70 -80 -80 2 10 10 3 10 4 10 5 10 6 10 7 10 -90 2 10 8 10 3 10 FREQUENCY (Hz) 4 10 5 10 6 10 7 10 8 FREQUENCY (Hz) Vout and Vref vs. Temperature [1] Vout vs. Vin vs. Temperature [1] 4.975 1.175 0.6 5.00 25C VREF 4.970 VR 4.960 1.160 VOUT (V) 1.165 1.155 4.955 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 1.150 TEMPERATURE (°C) 4.80 0.4 4.70 0.3 4.60 0.2 4.50 0.1 4.40 4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 0 INPUT VOLTAGE (V) [1] VDD=5.5V,400mA Load see “HMC976LP3E 5V User Application Schematic”. [2] VDD=5.0V,400mA Load see “HMC976LP3E 3.3V User Application Schematic”. [3] VDD=5.5V,400mA Load see “HMC976LP3E 4.8V User Application Schematic”. 9-3 For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] VIN-VOUT (V) VOUT (V) 0.5 85C -40 4.965 4.950 -40 4.90 1.170 VREF (V) POWER CONDITIONING - SMT 4 FREQUENCY (Hz) HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR Output Load Switched ON to OFF [1] 500 5.08 5.04 400 5.04 5.00 300 200 VR Output 4.92 OUTPUT (V) 100 VR Output 5.00 300 4.96 200 4.92 0 0 5 10 15 20 25 30 35 40 0 4.88 -5 45 100 CURRENT CURRENT 4.88 -5 0 5 10 15 20 25 TIME (ms) TIME (ms) Supply Turn-On Transient [2] 2.50 3.50 3.00 3.00 3.00 2.50 2.50 2.50 2.00 2.00 1.50 1.50 1.50 1.00 1.00 1.00 0.500 0.500 0.500 100 150 200 250 300 350 400 4.00 ENA VR Output 0.00 450 0.00 0.200 10 -6 10 -7 10 -8 10 -9 0.00 0.800 0.600 Vout vs. Load current[1] 5.050 Commercial PSU Output Input to regulator 5.030 VOUT (V) NOISE VOLTAGE (V/rtHz) HMC976LP3E Output Noise Spectral Density vs. Commercial PSU [1] -5 0.400 TIME (s) TIME (ms) 10 1.00 0.500 0.00 -0.200 5.010 4.990 4.970 HMC976LP3E Output 10 -10 10 4.950 1 10 2 10 3 4 5 10 10 FREQUENCY (Hz) 10 6 10 7 10 8 0 50 100 9 3.50 150 200 250 300 350 ENA (V) 1.50 50 45 3.50 2.00 VR Output 0 40 4.00 ENA (V) OUTPUT (V) ENA 0.00 -50 35 4.00 OUTPUT (V) 3.50 2.00 30 Supply Turn-Off Transient [2] 4.00 3.00 400 POWER CONDITIONING - SMT 4.96 500 CURRENT (mA) 5.08 CURRENT (mA) OUTPUT (V) Output Load Switched OFF to ON [1] 400 LOAD CURRENT mA [1] VDD=5.5V, 400mA Load “HMC976LP3E 5V User Application Schematic”. [2] VDD=5.0V, 400mA Load “HMC976LP3E 3.3V User Application Schematic” For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] 9-4 HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR Table 2. Absolute Maximum Ratings Vdd to GND Voltage +5.8V / -0.3V EN to GND Voltage +5.8V /-0.3V RDx / HVx to GND Voltage +5.8V / -0.3V Maximum Dissipation 780mW Thermal Resistance (Junction to Ambient) 51.5 °C/W Maximum Junction Temperature +125 °C Max Output Current 420 mA Storage Temperature -65 to +150 °C Operating Temperature -40 to +85 °C ESD Sensitivity (HBM) Class 1C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. The absolute maximum ratings apply individually only, not in combination. ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing POWER CONDITIONING - SMT 9 NOTES: [1] PACKAGE BODY MATERIAL: LOW STRESS INJECTION MOLDED PLASTIC SILICA AND SILICON IMPREGNATED. [2] LEAD AND GROUND PADDLE MATERIAL: COPPER ALLOY. [3] LEAD AND GROUND PADDLE PLATING: 100% MATTE TIN. [4] DIMENSIONS ARE IN INCHES [MILLIMETERS]. [5] LEAD SPACING TOLERANCE IS NON-CUMULATIVE. [6] PAD BURR LENGTH SHALL BE 0.15mm MAX. PAD BURR HEIGHT SHALL BE 0.25m MAX. [7] PACKAGE WARP SHALL NOT EXCEED 0.05mm [8] ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO PCB GROUND. [9] REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED PCB LAND PATTERN. Table 3. Package Information Part Number Package Body Material Lead Finish HMC976LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL Rating MSL1 [2] Package Marking [1] 976 XXX X [1] 4-Digit lot number XXXX [2] Max peak reflow temperature of 260 °C 9-5 For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR Table 4. Pin Descriptions Function Description 1 EN Enable Input, TTL Logic Level. The VR and VRX outputs are floating (high impedance) when EN = Low. 2 RD Resistive feedback for VR, see “Output Voltage Adjust” section. 3 REF Reference voltage (bandgap) output. Cannot be used to source/sink current to/from external circuits 4 VRX For Decoupling Capacitor Cannot be used to source current to external circuits 11 VR Regulator Output VR 400mA 5 HV Sets VR to 5V output when grounded 6 - 10, 12 - 14,16 N/C These pins can be left unconnected or connected to GND with no change in performance 15 VDD Unregulated power supply input 5.5V max Package Base GND Must contact PCB ground Interface Schematic For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] 9 POWER CONDITIONING - SMT Pin Number 9-6 HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR Evaluation PCB POWER CONDITIONING - SMT 9 9-7 Table 5. Ordering Information Item Contents Part Number Evaluation PCB HM976LP3E Evaluation PCB 131671-HMC976LP3E Table 6. List of Materials for Evaluation PCB 131671 Item Contents J1 PCB Mount SMA connector J3 3 Pin Header JP4, JP6, JP7, JP8, 2 Pin Header and Jumper C10, C12, C21 4.7µF Capacitor 0603 Pkg. C11 0.1µF Capacitor 0402 Pkg. R13 0.2 Ohm Resistor 0402 Pkg. R3 1 Ohm Resistor 0402 Pkg. R8 100 kOhm Resistor 0402 Pkg. TP1, TP3 Test Point PC Compact Red TP2 Test Point PC Compact Black U1 HMC976LP3E 400mA Low Noise, High PSRR Linear Voltage Regulator PCB 131669 Eval Board For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR Evaluation PCB Schematic Operational Features The recommended configuration is “HMC976LP3E 4.8V User Application Schematic”. This is for the default output voltage of 4.8V nominal. The values shown are those recommended for optimum Noise Spectral density. For users requiring extremely low noise in the 1 MHz to 10 MHz range the largest capacitor possible should be used: a 68uF takes the noise between 100 kHz and 1 MHz to below 2.5nV/√Hz. Load Capacitor Characteristics The HMC976LP3E was designed to work with a low ESR ceramic load capacitor on the VRX pin (C21 in the schematic above). Low ESR ceramic capacitors are very small and best for eliminating high frequency noise. Ceramic capacitors can vary as much as 50% versus temperature and 60% versus voltage, dependant on the ceramic type e.g. Z5U, Y5V, X7R or X5R. There are no restrictions on ceramic type or minimum ESR, only that the user must guarantee that the minimum capacitance over operating conditions is 4.7μF, smaller values can result in noise peaking or lower stability. For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] POWER CONDITIONING - SMT 9 9-8 HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR Output Voltage Adjustment The default output voltage is 4.8V this configuration “HMC976LP3E 4.8V User Application Schematic”. The output voltage can be set to 5V by a ground on HV pin 5 “HMC976LP3E 5V User Application Schematic”. The output voltage can be set from 1.8V to <4.8V by a resistor from pin 2 to the output pin 11 shown in “HMC976LP3E 3.3V User Application Schematic”. The value of the resistor is given by the equation below. ⎛ ⎛ Vout ⎞ ⎞ ⎜⎜ ⎟ − 1⎟ *18.9 1 . 17 ⎝ ⎠ ⎠ R1 = ⎝ ⎛ ⎛ Vout ⎞ ⎞ 1 − 0.32 * ⎜ ⎜ ⎟ − 1⎟ ⎝ ⎝ 1.17 ⎠ ⎠ POWER CONDITIONING - SMT 9 If the temperature stability performance similar to that shown in the plot “Vout and Vref vs. Temperature [1]” is required, then any external resistor temperature coefficient is a critical parameter and should be better than 50ppm and 1% tolerance. Please note that the temperature coefficient of the internal resistor feedback divider is 270ppm/°C. Layout of PCB The layout of the PCB should follow these guide lines, the PADDLE should be grounded to the supply -VE terminal or ground with at least 5 vias directly under the paddle to the bottom side ground plane. To ensure the noise and PSRR specifications are met, the capacitors connecting to Pins 15, 11, 3 (see user application schematics), should be placed as close as possible to the relevant pin and the ground connection should be as short as possible. Trace widths and via sizes should be scaled to match the current drawn. The use of a large ground plane is recommended with a large number of ground vias near the device to carry the ground. Thermal Protection Under the HMC976LP3E default output voltage condition (Vout = 4.8V and maximum output current) the thermal protection circuitry limits the output current to approximately 500μA. When the ambient temperature rises to approximately +115°C. The output will be kept disabled, allowing to the regulator to cool down, until the ambient temperature decreases by approximately 10°C. The thermal protection may cycle the output on and off, protecting the regulator from damage, dependant on the power dissipation and ambient temperature. The thermal protection circuitry will act indirectly when a short circuit occurs at the output. After the overload or the fault condition is removed/changed, the regulator output will return to the nominal operation. For reliable operation the “Absolute Maximum Ratings” must be complied with especially the maximum junction temperature must not be exceeded. The board copper ground area and thermal dissipation should be taken into account during board layout. The junction temperature for a given dissipation can be calculated from the equation below T =Ta + P ×θ j ja d Where Tj=Junction Temperature (°C), Ta=Ambient Temperature (°C), Pd=Dissipated Power (W), θja=Thermal Resistivity Junction to Ambient (°C/W). 9-9 For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR Thermal dissipation should be taken into account at all times especially with large VDD-VR values i.e. if 1.8V is required from 5.5V VIN then the output current must be restricted to <210mA , or VDD restricted to <3.75V for a 400mA load. The following plots show the board ground copper area influence, on junction temperature for ambient temperatures of 25°C, 50°C, 85°C vs. Total power dissipated in the device. The conditions for the plots are : 1. 2. 3. 4. 5. 100mm2 Copper Area 1000mm2 Copper Area 2580mm2 Copper Area HMC976LP3E Evaluation PCB No Heat Sink 2580mm2 Copper Area HMC976LP3E Evaluation PCB with Heat Sink JEDEC Board as per JESD51-3 HMC976LP3E JUNCTION TEMPERATURE °C vs. TOTAL POWER DISSIPATION 50°C AMBIENT 150 2 100mm no HS 100 2 1000mm no HS 75 2 2580mm no HS 2 2580mm with HS 50 25 125 2 100mm no HS 100 2 1000mm no HS 2 2580mm no HS 2 2580mm with HS 75 JEDEC no HS 50 JEDEC no HS 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 POWER DISSIPATION (W) 0.8 0.9 25 1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 POWER DISSIPATION (W) 0.8 0.9 HMC976LP3E JUNCTION TEMPERATURE °C vs. TOTAL POWER DISSIPATION 85°C AMBIENT 150 JUNCTION TEMPERATURE Tj (°C) 9 Tjmax Tjmax 125 JUNCTION TEMPERATURE Tj (°C) JUNCTION TEMPERATURE Tj (°C) 150 Tjmax 125 2 100 mm no HS 100 2 1000mm no HS 2 2580mm no HS 75 2 2580mm with HS JEDEC no HS 50 25 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 POWER CONDITIONING - SMT HMC976LP3E JUNCTION TEMPERATURE °C vs. TOTAL POWER DISSIPATION 25°C AMBIENT 1 POWER DISSIPATION (W) For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] 9 - 10 HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR HMC976LP3E 3.3V User Application Schematic POWER CONDITIONING - SMT 9 9 - 11 For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] HMC976LP3E v01.0711 400mA LOW NOISE, HIGH PSRR LINEAR VOLTAGE REGULATOR HMC976LP3E 4.8V User Application Schematic HMC976LP3E 5V User Application Schematic For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com Application Support: [email protected] POWER CONDITIONING - SMT 9 9 - 12