RT9204CS RICHTEK [Richtek Technology Corporation], RT9204CS Datasheet
![no-image](/images/no-image-200.jpg)
RT9204CS
Related parts for RT9204CS
RT9204CS Summary of contents
Page 1
... Internal Reference Voltage Mode PWM Control Fast Transient Response Fixed 600kHz Oscillator Frequency Full 0~100% Duty Cycle Internal Soft Start Internal PWM Loop Compensation Pin Configurations Part Number RT9204CS (Plastic SOP-8) Ordering Information processor RT9204 RT9204 Power Controller Pin Configurations TOP VIEW ...
Page 2
RT9204 Typical Application Circuit V AUX 3.3V Q1 2D1802 V OUT2 1.6V R4 100 + C6 220 µ 100 V AUX 3. OUT2 1.6V R4 100 + C6 220 µ 100 www.richtek-ic.com.tw 2 Preliminary ...
Page 3
C VCC 1µF Layout Notes 1. Put C 2. Put RT9204 to be near the C 3. Put C 4. Put C Function Block Diagram VCC DRV LDO _ FBL 0.8V Reference 0.5V 0.8V FB Error Amp GND DS9204-00 February ...
Page 4
RT9204 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 ...
Page 5
Typical Operating Charateristics Power 2.2V OUT Time Load Transient UGATE V OUT Time Short Hiccup V OUT Time DS9204-00 February 2002 Preliminary OUT1 V OUT2 ...
Page 6
RT9204 POR (Rising/Falling) vs. Temperature 4.3 4.2 Rising 4.1 4.0 3.9 3.8 Falling 3.7 3.6 - Temperature ( C) www.richtek-ic.com.tw 6 Preliminary 315 630 310 620 305 610 300 600 295 590 290 580 285 570 280 560 ...
Page 7
Functional Pin Description GND (Pin 1) Signal and power ground for the IC. All voltage levels are measured with respect to this pin. VCC (Pin 2) This is the main bias supply for the RT9204. This pin also provides the ...
Page 8
RT9204 Functional Description The RT9204 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 RT9204 can deliver higher ...
Page 9
COUNT = 1 COUNT = OVERLOAD APPLIED T0T1 T2 TIME Fig. 3 Applications Information Inductor Selection The RT9204 was designed for V application mainly. Fig.4 shows the typical topology and waveforms of step-down converter. The ripple ...
Page 10
RT9204 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 ...
Page 11
Reference Voltage Because RT9204 use a low 35dB gain error amplifier, shown in Fig. 8. The voltage regulation is dependent on V & V setting. The FB reference voltage of IN OUT 0.8V were trimmed & ...
Page 12
RT9204 The power components and the PWM controller should be placed firstly. Place the input capacitors, especially the high-frequency ceramic decoupling capacitors, close to the power switches. Place the output inductor and output capacitors between the MOSFETs and the load. ...
Page 13
Package Information J B Symbol DS9204-00 February 2002 Preliminary 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 ...
Page 14
RT9204 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 14 Preliminary RICHTEK TECHNOLOGY CORP. Taipei Office (Marketing) 8F-1, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, ...