RT8005 RICHTEK [Richtek Technology Corporation], RT8005 Datasheet
RT8005
Related parts for RT8005
RT8005 Summary of contents
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... The RT8005 is a high-efficiency synchronous buck PWM converter with integrated P-Channel and N-Channel power MOSFET switches. Capable of delivering 1A output current over a wide input voltage range of 2.4V to 5.5V, the RT8005 is ideally suited for portable applications powered by a single Li-Ion battery or by 3-cell NiMH/NiCd batteries. The ...
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... SR0403 Sumida CDRH3D16 GOTREND GTSD53 Suggested Capacitors For C Component Supplier TDK C1608X5R1A225M Panasonic ECJ1VB0J225M TAIYO YUDEN JMK107BJ225M www.richtek.com 2 VDD PVDD 2.2uF LX Chip Enable 5 EN RT8005 7 COMP FB C COMP PGND 10nF GND 8, Exposed Pad (11) (uF) C (uF) L (uH) OUT OUT 2.2 2.2/4.7 2.2 2.2 2.2/4.7 2.2 2.2 2.2/4.7 2.2 2.2 2 ...
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... PCB and connected to GND for maximum power dissipation. Power Ground. Connect this pin close to the terminal of C VDD Current Limit Slope Temperature Compensation Detector - PWM Comparator + + Error Amplifier - GND Pin Function and C IN Over Current Sense Detector Control Driver Logic Zero Detector RT8005 . OUT PVDD LX PGND www.richtek.com 3 ...
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... RT8005 Absolute Maximum Ratings Supply Voltage, PVDD and VDD l EN, FB Voltage --------------------------------------------------------------------------------------------------- 0. PGND to GND ---------------------------------------------------------------------------------------------------- 0. Voltage --------------------------------------------------------------------------------------------------------- 0. Power Dissipation VDFN-10L 3x3 ----------------------------------------------------------------------------------------------------1.923W Package Thermal Resistance (Note 4) l VDFN-10L 3x3, -----------------------------------------------------------------------------------------------52 C/W JA Junction Temperature -------------------------------------------------------------------------------------------150 C l Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------260 C ...
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... Note 4. is measured in the natural convection JEDEC 51-7 thermal measurement standard. DS8005-08 August 2007 Symbol Test Conditions V = 2.4V to 5.5V, Shutdown 2.4V to 5.5V, Enable high effective thermal conductivity test board of A RT8005 Min Typ Max Units -- -- 0 180 -- www.richtek.com ...
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... RT8005 Typical Operating Characteristics Line Regulation Deviation 0.4% 0 1.2V OUT 0.2% 0.2 0. -0.2% -0.2 -0.4% -0.4 -0.6% -0.6 2 2.5 3 3.5 Input Voltage (V) Current Limit vs. Input Voltage 2 1.2V OUT 2 1.8 1.6 1.4 1 2.5 3 3.5 Input Voltage (V) Frequency vs. Input Voltage 2.15 2.1 2.05 2 1.95 1.9 1.85 2.5 3 3.5 Input Voltage(V) www.richtek.com 50mA OUT I = 1000mA OUT = 500mA OUT 4 4.5 5 5.5 4 4.5 5 5.5 4 4.5 5 5.5 Load Regulation Devation ...
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... V = 3.3V 0.65V EN FB 210 200 190 180 170 160 150 -50 - Temperature (°C) V vs. Temperature REF 0.5 -50 - Temperature (°C) Soft Start Function 1.2V OUT OUT OUT Time (500 s/Div) RT8005 75 100 125 75 100 125 www.richtek.com 7 ...
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... RT8005 Steady State V = 3.3V 1.2V OUT V OUT (2mV/Div (1V/Div (500mA/Div) Time (100 s/Div) Load Transient Response V = 3.3V 1.2V IN OUT I = 100mA to 1A OUT Output Voltage Load Current Time (100 s/Div) www.richtek.com 8 = 0mA OUT (2mV/Div) (100mV/Div) (500mA/Div) Steady State V = 3.3V 1.2V OUT ...
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... PWM Operation During normal operation, the RT8005 regulates output voltage by switching at a constant frequency transferring the power to the load in each cycle by PWM. The RT8005 uses a slope-compensated, current-mode PWM controller capable of achieving 100% duty cycle. At each rising edge of the internal oscillator, the Control Logic cell sends a PWM ON signal to the Driver cell to turn on internal P- MOSFET ...
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... LX node to prevent stray capacitive noise pick-up. 4. Connect feedback network behind the output capacitors. Keep the loop area small. Place the feedback components near the RT8005. 5.Connect all analog grounds to a command node and then connect the command node to the power ground behind the output capacitors ...
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... V-Type 10L DFN 3x3 Package Richtek Technology Corporation Taipei Office (Marketing) 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com RT8005 2 1 DETAIL A Pin #1 ID and Tie Bar Mark Options Dimensions In Inches Min Max 0 ...