RT9172 RICHTEK [Richtek Technology Corporation], RT9172 Datasheet
RT9172
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RT9172 Summary of contents
Page 1
... RT9172 uses an internal PMOS as the pass device, which does not cause extra GND current in heavy load and dropout condition. The shutdown mode of low operation current makes the IC suitable for power-saving systems. The other features include current limiting and over temperature protection ...
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... Preliminary Part Number TOP VIEW RT9172S (Plastic TO-220-5) 2. VIN 3. GND (TAB) 4. VOUT 5. SENSE/FLG TOP VIEW RT9172S (Plastic TO-263-5) 2. VIN 3. GND (TAB) 4. VOUT 5. SENSE/FLG RT9172-25 VIN VOUT GND C IN 1µF Fig ...
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... RT9172N/RT9172S VIN EN RT9172 VIN DS9172-03 April 2002 Preliminary Buffer Thermal Amplifier Current Limiting Sensor Vref Buffer Thermal Amplifier Current Limiting Sensor _ + Vref Buffer Thermal Amplifier Current Limiting Sensor _ + Vref RT9172 VOUT FLG GND VOUT SENSE GND VOUT GND www.richtek-ic.com.tw 3 ...
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... Shutdown Threshold Thermal Shutdown Hysteresis Shutdown Function EN Pin Shutdown Threshold EN Input Current FLG Pin Leakage Current FLG Pin Sink Current Note 1: RT9172-CX, RT9172F-XXCX5, 10mA < I Note 2: RT9172S-XXCX5, RT9172N-XXCX5, 10mA < I www.richtek-ic.com.tw 4 Preliminary = 25°C, unless otherwise specified Symbol Test Conditions ...
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... Pin Description Pin No. RT9172F RT9172N RT9172S DS9172-03 April 2002 Preliminary Pin Name RT9172 -- EN Chip Enable 1 VIN Power Input 2 GND Ground 3 VOUT Output Voltage -- FLG ERROR Flag -- SENSE Remote Sense RT9172 Pin Function www.richtek-ic.com.tw 5 ...
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... RT9172 Typical Operating Charateristics PSRR 1nF 10µF Electrolytic Capacitor -10 OUT 2.5V -20 OUT T = 25°C A -30 -40 10mA -50 -60 -70 10 100 1K Frequency (Hz) Noise Signal & Spectrum Distribution Time (mS 200 1500 160 500 120 -500 ≈ 1µ 10µ ...
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... Time (µS) Line Transient Response 150 C = 68µF OUT 100 V = 2.5V OUT Loading = 100mA > 2 > 2 > 2 > 0 -50 ≈ 4 > 1 > 1 > 1 > 3 Time (µS) www.richtek-ic.com.tw RT9172 V = 3.5V IN ≈ 100 ≈ 100 7 ...
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... Larger capacitance provides better load dynamics and noise performance. Error Operation (FLG) The RT9172 produces a logic low signal at the FLG pin when the output drops out of regulation due to low input voltage, current limiting, or thermal limiting. The internal error FLG comparator has an open drain output stage ...
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... Copper Foil Area (SQ. IN.) Fig. 4 DS9172-03 April 2002 Preliminary As shown in the figure, increasing the copper area beyond improvement. The minimum value for θ 263 package mounted to a PCB TO-263 package 2.5 3 RT9172 1 square inch produces JA ° C/W. www.richtek-ic.com.tw very little for the TO- 9 ...
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... RT9172 Package Information F E1 Symbol www.richtek-ic.com.tw 10 Preliminary D M MARK Dimensions In Millimeters Min Max 4.064 4.826 2.032 2.921 0.635 1.016 1.143 1.524 0.305 0.559 1.143 1.397 9.779 10.668 7.620 9.398 2.286 2.794 11 ...
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... Ref. 7.620 Ref. 3-Lead TO- 263 Surface Mount RT9172 Dimensions In Inches Min Max 0.160 0.190 0.045 0.066 0.026 0.036 0.045 0.055 0.012 0.023 0.045 0.055 ...
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... RT9172 Symbol www.richtek-ic.com.tw 12 Preliminary Dimensions In Millimeters Min Max -- 1.803 0.020 0.100 0.610 0.787 3.302 3.708 6.706 7.290 6.299 6.706 2.896 3.150 2.261 2.362 0.229 0.330 0.914 -- 3-Lead SOT-223 Plastic Surface Mount ...
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... TO-220 Plastic Package RT9172 Dimensions In Inches Min Max 0.160 0.190 0.080 0.115 0.025 0.040 0.012 0.022 0.045 0.055 0.060 ...
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... RT9172 Symbol www.richtek-ic.com.tw 14 Preliminary D MARK Dimensions In Millimeters Min Max 4.064 4.826 1.143 1.676 0.660 0.914 0.305 0.584 1.143 1.397 9.652 10.668 8.128 9.652 1.524 1.829 14.605 15.875 2.286 2.794 6.223 Ref. ...
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... DS9172-03 April 2002 Preliminary RT9172 www.richtek-ic.com.tw 15 ...
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... RT9172 RICHTEK TECHNOLOGY CORP. Headquarter 6F, No. 35, Hsintai Road, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5510047 Fax: (8863)5537749 www.richtek-ic.com.tw 16 Preliminary RICHTEK TECHNOLOGY CORP. Taipei Office (Marketing) 8F-1, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek-ic.com.tw ...