max5969a Maxim Integrated Products, Inc., max5969a Datasheet
max5969a
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max5969a Summary of contents
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... The MAX5969A/MAX5969B provide a complete interface for a powered device (PD) to comply with the IEEE ® 802.3af/at standard in a power-over-Ethernet (PoE) sys- tem. The MAX5969A/MAX5969B provide the PD with a detection signature, classification signature, and an inte- grated isolation power switch with inrush current control. During the inrush period, the MAX5969A/MAX5969B limit ...
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IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with ABSOLUTE MAXIMUM RATINGS ..........................................................-0.3V to +100V DD SS DET, RTN, WAD, PG, 2EC to V ....................... -0.3V to +100V SS CLS to V ..............................................................-0.3V to +6V SS Maximum Current on ...
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... RTN, WAD, PG, and 2EC unconnected, all voltages are referenced to V CLS C to +85 C, unless otherwise noted. Typical values are CONDITIONS MAX5969A V rising ON IN MAX5969B V falling OFF IN MAX5969A MAX5969B V falling from 40V to 20V (Note minimum PG current pulse width DELAY after entering into power mode T = +25NC 600mA T = +85NC ...
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... CLS C to +85 C, unless otherwise noted. Typical values are +25NC. Limits over temperature are guaranteed by design. A below V shorter than or equal INi INi + 1 SS, = +25 C.) (Note and V . See Figure does not cause the MAX5969A/ OFF_DLY ...
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... DET RTN = 2EC = PG = WAD = -40NC A 25 +25NC A 24 +85NC A 24 (V) IN CLASSIFICATION SETTLING TIME MAX5969A toc05 V 10V/div 0A V 1V/div 30.9 I CLS 100µs/div INRUSH CURRENT LIMIT vs. RTN VOLTAGE 150 130 110 ...
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... RTN, WAD, PG, and 2EC unconnected; all voltages are referenced to V CLS V 2EC 50V/div 0V V RTN 50V/div 0V I RTN 100mA/div 50V/div 0V ENTERING POWER MODE WITH TYPE 2 CLASSIFICATION MAX5969A toc11 10V/div USING TYPICAL APPLICATION CIRCUIT 2EC PULLED WITH 10kI DD V 2EC 0V 40V/div V RTN 0V 50V/div I RTN 0A ...
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IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with PIN NAME 1 V Positive Supply Input. Connect a 68nF (min) bypass capacitor between DET Detection Resistor Input. Connect a signature resistor (R 3 N.C. No Connection. Not internally connected. ...
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... ISOLATION SWITCH 135mA REF 1/K I1 760mA MUX Simplified Block Diagram 1.23V CLASSIFICATION D SET Q PSE 2 CLR Q 1.5mA OFF 230µ 95ms WAPD 38.6V/31V FOR MAX5969B ON OFF 35.4V/31V FOR MAX5969A ON OFF MAX5969A MAX5969B CLS 2EC PG WAD RTN ...
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... IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with GND RJ-45 AND BRIDGE R DET RECTIFIER 24.9kI 68nF SMAJ58A R CLS -54V _______________________________________________________________________________________ Integrated Power MOSFET V 2EC DD PG DET WAD MAX5969A MAX5969B CLS 24V/48V BATTERY V RTN SS Typical Operating Circuit 2-EVENT CLASSIFICATION DETECTION IN+ GND ENABLE DC-DC CONVERTER IN- 9 ...
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... The MAX5969A/MAX5969B pull DET low in detection mode. DET goes high impedance when the input voltage exceeds 12.5V. In detection mode, most of the MAX5969A/MAX5969B internal circuitry is off and the offset current is less than 10µA. If the voltage applied to the PD is reversed, install pro- tection diodes at the input terminal to prevent internal damage to the MAX5969A/MAX5969B (see the Typical Application Circuit) ...
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... Once the input voltage (V the mark event threshold, the MAX5969A/MAX5969B enable wall adapter detection. The wall power adapt connected from WAD to RTN. The MAX5969A/ MAX5969B detect the wall power adapter when the voltage from WAD to RTN is greater than 9V. When a ...
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... Figure 2. Typical Configuration When Using a 12V Wall Power Adapter 12 _____________________________________________________________________________________ Integrated Power MOSFET 2) Use large SMT component pads for power dissipat- ing devices such as the MAX5969A/MAX5969B and the external diodes. Layout Procedure 3) Use short and wide traces for high-power paths. 4) Use the MAX5969 Evaluation Kit layout as a refer- ence ...
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... SMAJ58A AC -54V GND 33kI 1.37MI 51.5kI PG ULVO/EN UFLG FB MAX15000 10kI COMP CS CS 4.99kI ______________________________________________________________________________________ Integrated Power MOSFET 2EC 24.9kI DET WAD MAX5969A MAX5969B CLS 24/48V BATTERY 43.7I V RTN SS 249I 4.7µF 0.1µF GND RTN IN 0.1µF 0.1µF 22µ 22.1I NDRV GND CS 649I ...
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... RoHS status only. Package drawings may show a different suf- fix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE 10 TDFN-EP Maxim is a registered trademark of Maxim Integrated Products, Inc. Package Information PACKAGE CODE DOCUMENT NO. T1033+1 21-0137 ...