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RT9203 Datasheet(PDF) 6 Page - Richtek Technology Corporation |
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RT9203 Datasheet(HTML) 6 Page - Richtek Technology Corporation |
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6 / 16 page  RT9203/A Preliminary 6 DS9203/A-10 March 2007 www.richtek.com Absolute Maximum Ratings Electrical Characteristics l Supply Voltage VCC ------------------------------------------------------------------------------------------------ 7V l BOOT & UGATE to GND ------------------------------------------------------------------------------------------- 19V l Input, Output or I/O Voltage --------------------------------------------------------------------------------------- GND-0.3V to 7V l Power Dissipation, PD @ TA = 25°C SOP-8 ------------------------------------------------------------------------------------------------------------------ 0.625W l Package Thermal Resistance SOP-8, θJA ------------------------------------------------------------------------------------------------------------- 160°C/W l Ambient Temperature Range --------------------------------------------------------------------------------------0 °C to +70°C l Junction Temperature Range -------------------------------------------------------------------------------------- −40°C to +125°C l Storage Temperature Range --------------------------------------------------------------------------------------- −65°C to +150°C l Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------- 260 °C (VCC = 5V, TA = 25° C, Unless otherwise specified.) CAUTION: Stresses beyond the ratings specified in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Parameter Symbol Test Conditions Min Typ Max Units VCC Supply Current Nominal Supply Current ICC UGATE, LGATE open -- 3 -- mA VCC Regulated Voltage VCC VBOOT = 12V 5.0 6.0 7.0 V Power-On Reset Rising VCC Threshold 3.8 4.1 4.4 V VCC Threshold Hysteresis -- 0.5 -- V Reference Reference Voltage VFB Both PWM and linear regulator 0.784 0.8 0.816 V Oscillator Free Running Frequency 250 300 350 kHz Ramp Amplitude ∆ VOSC -- 1.75 -- VP-P PWM Error Amplifier DC gain 32 35 38 dB PWM Controller Gate Driver Upper Drive Source RUGATE BOOT = 12V BOOT-VUGATE = 1V -- 7.5 11 Ω Upper Drive Sink RUGATE VUGATE = 1V -- 5 8 Ω Lower Drive Source RLGATE VCC - VLGATE = 1V -- 3.5 6 Ω Lower Drive Sink RLGATE VLGATE = 1V -- 2 5 Ω Linear Regulator DRV Driver Source VDRV = 2V 100 -- -- mA To be continued |
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