IC-Hersteller Maxim Integrated

IC-Hersteller (95)

Maxim Integrated MAX17502 | Demoboard MAXREFDES1009

IEEE 802.3af/at-Compliant, PD Interface with Three Ultra-Small, High-Efficiency, Synchronous DC-DC Buck Converters

Details

TopologieAbwärtswandler
Eingangsspannung37-57 V
Ausgang 17.5 V / 0.3 A

Beschreibung

The MAX17502 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input voltage range. This device is offered in a fixed 3.3V, 5V, or adjustable output voltage (0.9V to 92%VIN) while delivering up to 1A of current. The output voltage is accurate to within ±1.7% over -40°C to +125°C. The MAX17502 is available in compact TDFN and TSSOP packages. Simulation models are available. The device features peak-current-mode control with pulse-width modulation (PWM) and operates with fixed switching frequency at any load. The low-resistance, on-chip MOSFETs ensure high efficiency at full load and simplify the layout. A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an output enable/undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input-voltage level. An open-drain active-low RESET pin provides a delayed power-good signal to the system upon achieving successful regulation of the output voltage.

Eigenschaften

  • Eliminates External Components and Reduce Total Cost ◦No Schottky-Synchronous Operation for High Efficiency and Reduced Cost◦Internal Compensation and Feedback Divider for 3.3V and 5V Fixed Outputs◦All-Ceramic Capacitors, Ultra-Compact Layout
  • Reduces Number of DC-DC Regulators to Stock ◦Wide 4.5V to 60V Input Voltage Range◦0.9V to 92%VIN Adjustable Output Voltage◦Delivers up to 1A◦600kHz and 300kHz Switching Frequency Options◦Available in a 10-Pin, 3mm × 2mm TDFN and 14-Pin, 5mm × 4.4mm TSSOP Packages
  • Reduces Power Dissipation ◦Peak Efficiency > 90%◦Shutdown Current = 0.9µA (typ)
  • Operates Reliably in Adverse Industrial Environments ◦Hiccup-Mode Current Limit, Sink Current Limit, and Autoretry Startup◦Built-In Output-Voltage Monitoring (Open-Drain Active-Low RESET Pin)◦Resistor-Programmable EN/UVLO Threshold◦Adjustable Soft-Start and Prebiased Power-Up◦High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range

Typische Anwendungen

  • Industrial Process Control
  • HVAC and Building Control
  • Base Station, VOIP, Telecom
  • General-Purpose Point-of-Load
  • Battery-Powered Equipment
  • Home Theater

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieCTol. CVR
(V (DC))
BauformBetriebstemperaturDF
(%)
RISOKeramiktypL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
Verpackung Muster
885012206016SPEC
8 Dateien WCAP-CSGP MLCCs 10 V(DC)22 nF ±10% 10 0603 -55 °C up to +125 °C 510 GΩ X7R Klasse II 1.6 0.8 0.8 0.4 7" Tape & Reel
Artikel Nr. Daten­blatt Simu­lation
885012206016SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieCTol. CVR
(V (DC))
BauformBetriebstemperaturDF
(%)
RISOKeramiktypL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
Verpackung Muster