rt9228 ETC-unknow, rt9228 Datasheet
rt9228
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rt9228 Summary of contents
Page 1
... Advanced PWM and Dual Linear Power Controller General Description The RT9228 is a 3-in-one power controller optimized for high-performance microprocessor and computer applications. The IC integrates a synchronous buck PWM controller, a linear regulator, and a linear controller as well as monitoring and protection functions into a 24-pin SOP package. The PWM controller regulates the microprocessor core voltage ...
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... RT9228 Absolute Maximum Ratings Supply Voltage PGOOD, FAULT and GATE Voltage Input, Output or I/O Voltage Ambient Temperature Range Junction Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 sec.) Package Thermal Resistance SOP-24, θ JA Recommended Operating Conditions Supply Voltage Ambient Temperature Range Junction Temperature Range CAUTION: Stresses beyond the ratings specified in “ ...
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... UGATE1 UGATE1 VCC = 12V I LGATE1 LGATE1 LGATE1 LGATE1 VSEN1 Rising OVP FAULT 4.5V OCSET OCSET1 VSEN1 Rising VSEN1 Rising Upper/Lower Threshold I = -4mA PGOOD RT9228 Min Typ Max Units -- -- 0 -1% -- 20mV - 1.240 1.265 1.290 V -2 100 ...
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... RT9228 Function Block Diagram FB3 _ 0.3V GATE3 3.3V VIN2 1.26V _ VOUT2 FB2 _ 0.25A FAULT VCC 11µ Functional Pin Description VCC (Pin 1) Provide a 12V bias supply for the IC to this pin. This pin also provides the gate bias charge for all the MOSFETs controlled by the IC. ...
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... MOSFET for over- current protection. UGATE1 (Pin 24) Connect UGATE1 pin to the PWM converter’s upper MOSFET gate. This pin provides the gate drive for the upper MOSFET internal OCSET ), and the upper ) set the PWM ×R I OCSET1 OCSET1 = R DS (ON) RT9228 www.richtek.com 5 ...
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... RT9228 VID4 VID3 www.richtek.com 6 Table 1. VOUT1 Voltage Program Pin Name ...
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... FB3 PHASE1 R7 RT9228 1K 22 LGATE1 13 VOUT2 21 PGND 11 FB2 R9 19 VSEN1 1K 18 FB1 6 VID0 5 VID1 8 FAULT 4 VID2 3 9 VID3 SS 2 VID4 GND 14 POWERGOOD Q1 R3 PHB83N03LT 10K L2 3.5µH PHB95N03LT C13-19 Q2 7x1000µF R4 4.99K C11 0.68µF R5 732K C12 0.039µF RT9228 V OUT1 1.3 to 3.5V + www.richtek.com 7 ...
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... RT9228 Package Information C Symbol www.richtek.com Dimensions In Millimeters Min Max 15.189 15.596 7.391 7.595 2.362 2.642 0.330 0.508 1.194 1.346 0.229 0.330 0.102 0.305 10.008 10.643 0.381 1.270 Dimensions In Inches Min Max 0.598 ...
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... DS9228-03 July 2001 RT9228 www.richtek.com 9 ...