Topologie | Aufwärtswandler |
Eingangsspannung | 8-28 V |
Schaltfrequenz | 150-621 kHz |
Ausgang 1 | 0.12 A |
IC-Revision | 1.03 |
The MP3398A is a step-up controller with 4 current channels, which is designed to drive WLED arrays for large-size LCD-panel backlighting applications. It is flexible to expand the number of LED channels by two or more ICs in parallel sharing a single inductive power source.The MP3398A uses peak-current mode with fixed switching frequency. The frequency is programmable by an external setting resistor. The MP3398A drives an external MOSFET to boost up the output voltage from a 5V to 28Vinput supply. It regulates the current in each LED string to the value set by an external current-setting resistor.The MP3398A applies 4 internal current sources for current balance. The current matching can achieve 2.5% regulation accuracy between strings. Its low regulation voltage on LED current sources reduces power loss.The MP3398A can support both analog and PWM dimming independently to meet the different dimming-mode request. In addition, rich protection modes are also integrated including OCP, OTP, UVP, OVP, LED short/open protection, inductor/diode short protection.The MP3398A is available in SOIC16, TSSOP16-EP and SOIC20 packages.
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L (µH) | IRP,40K (A) | RDC max. (mΩ) | fres (MHz) | Bauform | Version | Muster | |
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744770133 | SPEC | 8 Dateien | Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | WE-PD Speicherdrossel | 33 | 4.7 | 53 | 8.5 | 1280 | Standard |
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Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | L (µH) | IRP,40K (A) | RDC max. (mΩ) | fres (MHz) | Bauform | Version | Muster |
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