MAX5073ETI Maxim Integrated Products, MAX5073ETI Datasheet
MAX5073ETI
Related parts for MAX5073ETI
MAX5073ETI Summary of contents
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... Point-of-Load DC-DC Converters Telecom Line Card Networking Line Card Power-Over-Ethernet Postregulation for PDs Ordering Information PART TEMP RANGE PIN-PACKAGE 28 Thin QFN-EP* MAX5073ETI -40°C to +85°C (5mm x 5mm) 28 Thin QFN-EP* M AX5073E TI+ -40°C to +85°C (5mm x 5mm) *EP = Exposed pad. +Denotes lead-free package. ...
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... OSC V = 3.3V at 1.5A, OUT1 η 2.5V at 0.75A OUT2 (f = 1.25MHz) SW UVLO VL falling 5.5V to 23V 40mA SOURCE 60kΩ (MAX5073ETI) BYPASS OSC BYPASS 60kΩ (MAX5073ATI) BYPASS OSC 0 ≤ I ≤ 50µ 60kΩ BYPASS BYPASS OSC Internal 6-bit DAC = +70° )............................-40°C to +85°C ...
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... DD2 SOURCE2 V = 3.3V 12V (Note 3) OUT1 OUT1 V = 2.5V 12V (Note 3) OUT2 OUT2 I EN1 = 0V 23V LK1 DS I EN2 = 0V 23V LK2 12V (MAX5073ETI) I CL1 V+ = 12V (MAX5073ATI) MAX5073ETI I CL2 MAX5073ATI = 0.22µ 4.7µF (ceram- BYPASS VL MIN TYP MAX UNITS 250 nA 0.792 0.8 0.808 ...
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... PHASE OSC VL = 5.2V, sourcing 5mA VL = 5.2V, sinking 5mA 5. 5.2V IL B(EN) PGOOD goes high after V OUT _ PGOOD_ threshold I = 3mA (MAX5073ETI) SINK I = 3mA (MAX5073ATI) SINK 5.2V 23V, V PGOOD_ Junction temperature SHDN Junction temperature HYST = 0.22µ 4.7µF (ceram- BYPASS VL MIN ...
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Dual-Output Buck or Boost Converter ( 5.2V +25°C, unless otherwise noted.) A OUTPUT1 EFFICIENCY (BUCK CONVERTER) vs. LOAD CURRENT 100 12. ...
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Dual-Output Buck or Boost Converter with Internal Power MOSFETs ( 5.2V +25°C, unless otherwise noted.) A LINE-TRANSIENT RESPONSE (BUCK CONVERTER) MAX5073 toc10 1ms/div CONVERTER 2 LOAD-TRANSIENT RESPONSE (BUCK CONVERTER) MAX5073 toc12 100µs/div LOAD-TRANSIENT RESPONSE ...
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Dual-Output Buck or Boost Converter ( 5.2V +25°C, unless otherwise noted.) A EXTERNAL SYNCHRONIZATION 200ns/div V+ SWITCHING SUPPLY CURRENT (I vs. TEMPERATURE 600kHz ...
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Dual-Output Buck or Boost Converter with Internal Power MOSFETs ( 5.2V +25°C, unless otherwise noted.) A OUTPUT LOAD CURRENT LIMIT vs. TEMPERATURE 3.00 2.75 2.50 OUTPUT1 2.25 2.00 OUTPUT2 1.75 1.50 1.25 1.00 -40 ...
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Dual-Output Buck or Boost Converter PIN NAME Oscillator Frequency Set Input. Connect a resistor from OSC to SGND (R frequency (see the Oscillator section). Set R 10 OSC input frequency when using external synchronization (0.2f when an external clock ...
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Dual-Output Buck or Boost Converter with Internal Power MOSFETs OUTPUT2 2.5V/1A VL CLOCK OUT INPUT ON OFF SGND V = 5.5V TO 23V IN PGND Figure 1. MAX5073 Dual Buck Regulator Application Circuit Detailed Description The MAX5073 converter uses ...
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Dual-Output Buck or Boost Converter Internal Oscillator/Out-of-Phase Operation The internal oscillator generates the 180° out-of-phase clock signal required by each regulator. The internal oscillator frequency is programmable from 400kHz to 4.4MHz using a single 1% resistor at R lowing ...
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Dual-Output Buck or Boost Converter with Internal Power MOSFETs V+ MAX5073 CONVERTER 1 DEAD-TIME CONTROL OSCILLATOR FREQUENCY FOLDBACK BYPASS VREF DIGITAL EN1 SOFT-START SYNC MAIN CKO OSCILLATOR OSC OSCILLATOR EN2 Figure 2. Functional Diagram 12 ______________________________________________________________________________________ ...
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Dual-Output Buck or Boost Converter DRAIN2 OUTPUT2 SOURCE2 SOURCE1 SYNC CLKOUT DUTY CYCLE = 50% CLKIN MASTER SYNC CLKOUT (MASTER) CLKOUT (SLAVE) SOURCE1 (MASTER) SYNC PHASE SOURCE2 (MASTER) SOURCE1 (SLAVE) SOURCE2 (SLAVE) C (RIPPLE) IN Figure ...
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Dual-Output Buck or Boost Converter with Internal Power MOSFETs The MAX5073 dual converter provides separate enable inputs EN1 and EN2 to individually control or sequence the output voltages. These active-high enable inputs are TTL compatible. Pulling EN_ high ramps ...
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Dual-Output Buck or Boost Converter Applications Information Setting the Switching Frequency The controller generates the clock signal by dividing down the internal oscillator or the SYNC input signal when driven by an external oscillator. The switching frequency equals half ...
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Dual-Output Buck or Boost Converter with Internal Power MOSFETs Three key inductor parameters must be specified for operation with the MAX5073: inductance value (L), peak inductor current (I ), and inductor saturation current The minimum required ...
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Dual-Output Buck or Boost Converter The allowable output ripple voltage and the maximum deviation of the output voltage during step load currents determines the output capacitance and its ESR. The output ripple is comprised of ∆V capacitor discharge) and ...
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Dual-Output Buck or Boost Converter with Internal Power MOSFETs The input current for the boost converter is continuous and the RMS ripple current at the input is low. Calculate the capacitor value and ESR of the input capacitor using ...
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Dual-Output Buck or Boost Converter × RMS DS(ON)MAX where V is the drop across the internal MOSFET. See DS the Electrical Characteristics for the R V × I × ...
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Dual-Output Buck or Boost Converter with Internal Power MOSFETs V ESR × ESR + ( 2 π × f OSC C where peak-to-peak ramp amplitude equal OSC to 1V. The transconductance ...
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Dual-Output Buck or Boost Converter VL CLOCK OUT OUTPUT2 12V/0.2A ON OFF Figure 8. Buck-Boost Application Boost Converter Compensation The boost converter compensation gets complicated due to the presence of a right-half-plane zero f The right-half-plane zero causes a ...
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Dual-Output Buck or Boost Converter with Internal Power MOSFETs 3) Calculate C for a target crossover frequency ⎡ − ω OSC C ⎣ ⎢ ω ...
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Dual-Output Buck or Boost Converter Layout Procedure 1) Place the power components first, with ground ter- minals adjacent (inductor, C IN_ all these connections on the top layer with wide, copper-filled areas (2oz copper recommended). 2) Group the gate-drive ...
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Dual-Output Buck or Boost Converter with Internal Power MOSFETs (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 24 ______________________________________________________________________________________ Package Information ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 25 © 2006 Maxim Integrated Products ...