RT9202CS ETC, RT9202CS Datasheet
RT9202CS
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RT9202CS Summary of contents
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... Fixed 300kHz Oscillator Frequency Full 0~100% Duty Cycle Internal Soft Start Adaptive Non-overlapping Gate Driver Over-current Monitor Uses MOSFET R Over-voltage MOSFET Pin Configurations Part Number , which eliminates RT9202CS (Plastic SOP-8) Ordering Information RT9202 RT9202 DS(ON) Protection Uses Low-side Pin Configurations TOP VIEW ...
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RT9202 Typical Application Circuit Q2 SHDN 2N7002 H: shutdown H: shutdown Q1 SHDN 2N7002 www.richtek.com 20K BOOT PHASE 7 2 UGATE OCSET V OUT RT9202 2. GND VCC LGATE ...
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CVCC 1µF Layout Notes 1. Put CIN1 & CIN2 to be near the MU drain and ML source nodes. 2. Put RT9202 to be near the COUT 3. Put CBOOT as close as to BOOT pin 4. Put CVCC as ...
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RT9202 Function Block Diagram VCC Bias 0.8V Reference 0.8V Error FB _ GND www.richtek.com 4 Power on Reset Soft Start 1V _ OVP _ UVP 0.5V 35dB PWM Error _ Amp 300kHz Oscillator 6.0V Regulator 40µ Control Logic ...
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Absolute Maximum Ratings Supply Voltage VCC BOOT & UGATE to GND Input, Output or I/O Voltage Power Dissipation SOP-8 Package Thermal Resistance SOP-8, θ JA Ambient Temperature Range Junction Temperature Range Storage Temperature Range Lead ...
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RT9202 Parameter Protection FB Over-Voltage Trip FB Under-Voltage Trip OCSET Current Source Soft-Start Interval Functional Pin Description BOOT (Pin 1) This pin provides ground referenced bias voltage to the upper MOSFET driver. A bootstrap circuit is used to create a ...
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Typical Operating Charateristics Dead Time UGATE Time Power 2.2V OUT Time Load Transient UGATE V OUT Time DS9202-02 August 2002 LGATE OUT ...
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RT9202 Bootstrap Wave Form V CC UGATE LGATE PHASE Time Reference vs. Temperature 0.803 0.802 0.801 0.800 0.799 0.798 0.797 0.796 - Temperature ( C) POR (Rising/Falling) vs. Temperature 4.3 4.2 Rising 4.1 4.0 3.9 3.8 Falling 3.7 ...
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Functional Description The RT9202 operates at either single 5V power supply with a bootstrap UGATE driver or 5V/12V dual-power supply form the ATX SMPS. The dual- power supply is recommended for high current application, the RT9202 can deliver higher gate ...
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RT9202 comparator trips to set the over-current latch. Both V and V are referenced to V SET DS capacitor across R helps V OCSET variations of V due to MOSFET switching. The over- IN current function will be tripped at ...
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Applications Information Inductor Selection The RT9202 was designed for V application mainly. Fig.5 shows the typical topology and waveforms of step-down converter. The ripple current of inductor can be calculated as follows: )/L × ( ...
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RT9202 Input / Output Capacitor High frequency/long life decoupling capacitors should be placed as close to the power pins of the load as physically possible. Be careful not to add inductance to the PCB trace could eliminate the ...
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VIN L V OUT + C OUT R1 R2 < 1K Fig. 9 PWM Layout Considerations MOSFETs switch very fast and efficiently. The speed with which the current transitions from one device to another causes voltage spikes interconnecting impedances and ...
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RT9202 Package Information J B Symbol www.richtek.com Dimensions In Millimeters Min Max 4.801 5.004 3.810 3.988 1.346 1.753 0.330 0.508 1.194 1.346 0.178 0.254 0.102 ...
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DS9202-02 August 2002 RT9202 www.richtek.com 15 ...
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RT9202 RICHTEK TECHNOLOGY CORP. Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 www.richtek.com 16 RICHTEK TECHNOLOGY CORP. Taipei Office (Marketing) 8F-1, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. ...