MAX1540ETJ+ Maxim Integrated Products, MAX1540ETJ+ Datasheet
MAX1540ETJ+
Specifications of MAX1540ETJ+
Related parts for MAX1540ETJ+
MAX1540ETJ+ Summary of contents
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... Thin QFN MAX1541ETL+ -40°C to +85°C 6mm x 6mm +Denotes a lead-free package. Quick-PWM is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ Inductor-Saturation Protection ♦ ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator ABSOLUTE MAXIMUM RATINGS V+, LDOON to GND ...............................................-0.3V to +28V LDOOUT to GND (MAX1540A, Note 1)....................-0.3V to +6V LDOOUT to GND (MAX1541, Note 1) ....................-0.3V to +28V V to ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator ELECTRICAL CHARACTERISTICS (continued) = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, T (V+ = 15V values are at T ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator ELECTRICAL CHARACTERISTICS (continued) = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, T (V+ = 15V values are at T ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator ELECTRICAL CHARACTERISTICS (continued) = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, T (V+ = 15V values are at T ...
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... DL_ Gate-Driver Sink Current I DL (SINK) Dead Time INPUTS AND OUTPUTS OD On-Resistance OD Leakage Current Logic Input Threshold LDOON Input Trip Level Logic Input Current Dual Mode™ Threshold Voltage Dual Mode is a trademark of Maxim Integrated Products, Inc. 6 _______________________________________________________________________________________ CONDITIONS ILIM_ = V (VAL) CSP CSN ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator ELECTRICAL CHARACTERISTICS (continued) = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, T (V+ = 15V values are at T ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator ELECTRICAL CHARACTERISTICS (continued) = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, T (V+ = 15V (Note 4) PARAMETER SYMBOL ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator ELECTRICAL CHARACTERISTICS (continued) = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, T (V+ = 15V (Note 4) PARAMETER SYMBOL ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator ELECTRICAL CHARACTERISTICS (continued) = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, T (V+ = 15V (Note 4) PARAMETER SYMBOL ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator (MAX1541 circuit of Figure 12 12V 1.0V OUTPUT VOLTAGE (OUT1) vs. LOAD CURRENT 1.02 SKIP = GND SKIP = V CC 1.01 1.00 0.99 0.98 ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator (MAX1541 circuit of Figure 12 12V LINEAR-REGULATOR OUTPUT (LDOOUT) vs. LOAD CURRENT 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3. LDO ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator (MAX1541 circuit of Figure 12 12V SHUTDOWN WAVEFORM (DISCHARGE MODE ENABLED) 3. 1ms/div A. ON2, 5V/div B. ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator (MAX1541 circuit of Figure 12 12V LINEAR-REGULATOR LINE TRANSIENT 20V 10V 20V 10V 3.8V 3.3V 2.8V 200μs/div A. INPUT (V ), 10V/div IN B. LDOIN ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator (MAX1541 circuit of Figure 12 12V INDUCTOR-SATURATION PROTECTION (ΔV ILIM 5A 0 2.5V 0.67V 0.47V 7.5A 0 20μs/div 5A, 5A/div ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator PIN NAME MAX1540A MAX1541 1 1 OVP/UVP SKIP LSAT 4 4 TON — 6 GATE — 7 CC1 16 ______________________________________________________________________________________ FUNCTION ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator PIN NAME MAX1540A MAX1541 6 8 ILIM1 7 9 ILIM2 8 10 REF — 11 REFIN1 — CSP2 10 14 CSN2 11 15 FB2 12 ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator PIN NAME MAX1540A MAX1541 13 17 PGOOD2 14 18 DH2 15 19 LX2 16 20 BST2 17 21 GND 18 22 DL2 — 24 LDOIN — ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator PIN NAME MAX1540A MAX1541 24 31 LX1 25 32 DH1 26 33 PGOOD1 27 34 OUT1 28 35 FB1 29 36 CSN1 30 37 CSP1 — 38 FBLANK ______________________________________________________________________________________ ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator PIN NAME MAX1540A MAX1541 31 39 ON2 32 40 ON1 — — EP Table 1. Component Selection for Standard Applications COMPONENT PWM1 Input Voltage ( 24V ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator +5V BIAS SUPPLY 2.5μH R CS1 15mΩ OUTPUT 1 1.8V, 4A (MAX) C OUT1 220μF C REF 0.22μF C3 470pF C4 470pF POWER GROUND ANALOG GROUND ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Table 2. Component Suppliers SUPPLIER PHONE Central 631-435-1110 www.centralsemi.com Semiconductor (USA) 800-322-2645 Coilcraft www.coilcraft.com (USA) Fairchild 888-522-5372 www.fairchildsemi.com Semiconductor (USA) International 310-322-3331 www.irf.com Rectifier (USA) 408-986-0424 Kemet www.kemet.com (USA) ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator nected internally to the fixed 5V linear-regulator output (LDOOUT). The 5V bias supply must provide V and V (gate-drive power), so the maximum current DD drawn is ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator *V+ TON SKIP ILIM1 CSP1 CSN1 VALLEY CURRENT LIMIT BST1 DH1 LX1 *V DD DL1 GND **CC1 **REFIN1 INTERNAL MAX1540A/MAX1541 OPTION FB1 OUT1 ON1 PGOOD1 **FBLANK **OD **GATE *FOR ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Table 3. Approximate K-Factor Errors NOMINAL TON K-FACTOR SETTING (kHz) ERROR (%) 200kHz (TON = V ) ±10 CC 300kHz (TON = open) ±10 420kHz (TON = REF) ±12.5 ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator *MAIN MAX1541 CONTROLLER (OUT1) ONLY CC1 CC1 INT FB_ INT REF_ VALLEY CURRENT LIMIT SATURATION LIMIT V+ TON OUT_ Figure 3. MAX1540A/MAX1541 PWM-Controller Functional Diagram ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator SATURATION LIMIT DH DRIVER VALLEY CURRENT LIMIT ZERO CROSSING Figure 5. MAX1540A/MAX1541 Current-Limit Functional Diagram ment (Figure 1). If the magnitude of the current-sense signal is above the valley ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Inductor-Saturation Limit The LSAT connection selects an upper current-sense limit as the inductor-saturation threshold, or disables the inductor-saturation protection feature altogether (LSAT = GND). When enabled, the inductor-saturation threshold ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator MOSFET Gate Drivers (DH_, DL_) The DH_ and DL_ drivers are optimized for driving mod- erate-sized high-side, and larger low-side power MOSFETs. This is consistent with the low duty ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator POWER-GOOD FAULT PROTECTION 0.9 x 1.1 x 0.7 x INT REF_ INT REF_ INT REF_ INT REF_ 20ms TIMER POR *MAIN MAX1541 CONTROLLER (OUT1) ONLY Figure 9. Power-Good and ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator cannot tolerate a negative voltage, place a power Schottky diode across the output to act as a reverse- polarity clamp. If the condition that caused the overvolt- age persists ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator FB_ REF (2.0V Figure 10. MAX1540A/MAX1541 Dual Mode Feedback Decoder Table 8. Output Voltage Configuration OUT1 MAX1540A MAX1541 MAX1540A MAX1541 Not FB_ = V Fixed 1.2V CC ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator L LX_ MAX1540A/MAX1541 DL_ N L GND CSP_ CSN_ OUT_ FB_ Figure 11. Setting V with a Resistive Voltage-Divider at FB_ OUT light loads, quickly discharging the output capacitors. ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator +5V BIAS SUPPLY 1.8μH R 15mΩ OUTPUT 1.5V OUT(HIGH 1.0V OUT(LOW OUT(LOW) REF ( ) ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator V+ *LDOIN LDOON *FBDLO INTERNAL FBLDO OPTION BETWEEN THE MAX1540A/MAX1541 *MAX1541 ONLY. Figure 13. Internal Linear-Regulator Functional Diagram Design Procedure Firmly establish the input voltage range and maximum load ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Inductor Selection The switching frequency and inductor operating point determine the inductor value as follows OUT IN OUT = L × ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator For high-power applications that do not require high- accuracy current sensing or inductor-saturation protec- tion, the MAX1540A/MAX1541 can use the low-side MOSFET’s on-resistance as the current-sense element (R = ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator DH LX MAX1540A DL MAX1541 GND CONNECT TO PREFERRED CSP LSAT SETTING LSAT CSN a) OUTPUT SERIES RESISTOR SENSING DH LX CSN MAX1540A DL MAX1541 CSP DISABLE LSAT GND ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Output-Capacitor Stability Considerations For Quick-PWM controllers, stability is determined by the value of the ESR zero relative to the switching fre- quency. The boundary of instability is given by ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Power-MOSFET Dissipation Worst-case conduction losses occur at the duty factor extremes. For the high-side MOSFET (N case power dissipation due to resistance occurs at minimum input voltage: ⎛ ⎞ ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator A reasonable minimum value for h is 1.5, but adjusting this up or down allows trade-offs between V capacitance, and minimum operating voltage. For a given value of h, ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator V V DDQ CC 10kΩ 10nF 10kΩ Figure 16. Active Bus Termination Voltage Positioning In applications where fast load transients occur, the out- put voltage changes instantly by ESR ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator OUT(VPS) OUT(NO LOAD) SENSE OUT Figure 17. Voltage Positioning VOLTAGE POSITIONING THE OUTPUT 1.4 1.4 50mV/div A. CONVENTIONAL CONVERTER ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator CONNECT THE EXPOSED PAD TO ANALOG GROUND VIA BYPASS CAPACITOR MAX1540A TOP LAYER SINGLE INDUCTOR N-CHANNEL MOSFETS C IN INPUT HIGH-POWER LAYOUT Figure 19. PC Board ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator Pin Configurations (continued) TOP VIEW LX1 31 DH1 32 PGOOD1 33 OUT1 34 FB1 35 MAX1541 CSN1 36 CSP1 37 FBLANK 38 ON2 39 ON1 40 THIN QFN A ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 46 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information (continued) PACKAGE OUTLINE, ...
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Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 48 ______________________________________________________________________________________ Package Information (continued) ...
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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 ____________________ 49 © 2007 Maxim Integrated Products Package Information (continued registered trademark of Maxim Integrated Products, Inc ...