rt8003 Richtek Technology Corporation, rt8003 Datasheet
rt8003
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rt8003 Summary of contents
Page 1
... General Description The RT8003 is a high-efficiency synchronous buck PWM converter with integrated P-Channel and N-Channel power MOSFET switches. Capable of delivering 600mA output current over a wide input voltage range of 2.4V to 5.5V, the RT8003 is ideally suited for portable applications powered by a single Li-Ion battery or by 3-cell NiMH/NiCd batteries ...
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... SR0302 Sumida CDRH2D14 TDK VLP4612 Suggested Capacitors For C Component Supplier C1608X5R1A105M TDK C1608X5R1A225M ECJ1VB0J105M Panasonic ECJ1VB0J225M JMK107BJ105M TAIYO YUDEN JMK107BJ225M www.richtek.com 1uF VDD RT8003 7 6 COMP FB C GND COMP 10nF (uF) C (uF) L (uH) OUT OUT 1 1/2.2 2.2/1 1 1/2.2 2.2/1 1 1/2.2 2.2/1 1 1/2 ...
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... Function Block Diagram EN Shutdown Control Oscillator COMP V REF FB DS8003-03 November 2005 Current Limit Slope Temperature Detector Compensation - PWM Comparator + + Error Amplifier - and C and ground plane with the lowest IN OUT Over Current Sense Detector Control Driver Logic Zero Detector RT8003 VDD LX GND www.richtek.com 3 ...
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... RT8003 Absolute Maximum Ratings --------------------------------------------------------------------------------------------------- Supply Voltage l LX 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 l Storage Temperature Range ----------------------------------------------------------------------------------- 150 C l ESD Susceptibility (Note 2) ...
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... Note 4. is measured in the natural convection JEDEC 51-7 thermal measurement standard. DS8003-03 November 2005 Symbol Test Conditions V = 2.4V to 5.5V, Shutdown 2.4V to 5.5V, Enable high effective thermal conductivity test board of A RT8003 Min Typ Max Units -- -- 0 180 -- www.richtek.com ...
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... RT8003 Typical Operating Characteristics Output Voltage Deviation vs. Output Current 0.10% 0.1 0.00% 0 -0.10% -0.1 -0.20% -0.2 -0.30% -0.3 -0.40% -0.4 -0.50% -0.5 -0.60% -0.6 -0.70% -0.7 0 100 200 300 Output Current (mA) Efficiency vs. Output Current 100 100 3.3V 1.2V IN OUT 90 90% 80 80% 70 70% 60 60% 50 50% 40 40% 30 30% 20 20% 10 Output Current (mA) 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 ...
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... Quiescent Current vs. Temperature 250 V = 3.3V 0.65V IN FB 200 150 100 50 0 -50 - Temperature V vs. Input Voltage REF 0.52 0.515 0.51 0.505 0.5 0.495 0.49 0.485 0.48 2.5 3 3.5 4 Input Voltage (V) Load Transient Response V = 3.3V 1.2V IN OUT I = 50mA to 600mA OUT (50mV/Div) (200mA/Div) Time (250 s/Div) RT8003 75 100 125 ( C) 4.5 5 5.5 www.richtek.com 7 ...
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... RT8003 Steady State V = 3.3V 1.2V OUT Output Voltage (10mV/Div) (1V/Div Time (25 s/Div) Soft Start Function (500mV/Div) Output Voltage (2V/Div (200mA/Div) Input Current V = 3.3V 1.2V OUT Time (500 s/Div) www.richtek.com 8 = 0mA 1uF OUT OUT Output Voltage = 600mA OUT Steady State ...
Page 9
... PWM Operation During normal operation, the RT8003 regulates output voltage by switching at a constant frequency transferring the power to the load in each cycle by PWM. The RT8003 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 RT8003. 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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... Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com 2 1 DETAIL A Pin #1 ID and Tie Bar Mark Options Dimensions In Inches Min Max 0.031 0.039 0.000 0.002 0.007 0.010 0.007 0.012 0.116 0.120 0.091 0.104 0.116 0.120 0.059 0.069 0.020 0.014 0.018 www.richtek.com RT8003 ...
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Page 13
... General Description The RT8003 is a high-efficiency synchronous buck PWM converter with integrated P-Channel and N-Channel power MOSFET switches. Capable of delivering 600mA output current over a wide input voltage range of 2.4V to 5.5V, the RT8003 is ideally suited for portable applications powered by a single Li-Ion battery or by 3-cell NiMH/NiCd batteries ...
Page 14
... SR0302 Sumida CDRH2D14 TDK VLP4612 Suggested Capacitors For C Component Supplier C1608X5R1A105M TDK C1608X5R1A225M ECJ1VB0J105M Panasonic ECJ1VB0J225M JMK107BJ105M TAIYO YUDEN JMK107BJ225M www.richtek.com 1uF VDD RT8003 7 6 COMP FB C GND COMP 10nF (uF) C (uF) L (uH) OUT OUT 1 1/2.2 2.2/1 1 1/2.2 2.2/1 1 1/2.2 2.2/1 1 1/2 ...
Page 15
... Function Block Diagram EN Shutdown Control Oscillator COMP V REF FB DS8003-03 November 2005 Current Limit Slope Temperature Detector Compensation - PWM Comparator + + Error Amplifier - and C and ground plane with the lowest IN OUT Over Current Sense Detector Control Driver Logic Zero Detector RT8003 VDD LX GND www.richtek.com 3 ...
Page 16
... RT8003 Absolute Maximum Ratings --------------------------------------------------------------------------------------------------- Supply Voltage l LX 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 l Storage Temperature Range ----------------------------------------------------------------------------------- 150 C l ESD Susceptibility (Note 2) ...
Page 17
... Note 4. is measured in the natural convection JEDEC 51-7 thermal measurement standard. DS8003-03 November 2005 Symbol Test Conditions V = 2.4V to 5.5V, Shutdown 2.4V to 5.5V, Enable high effective thermal conductivity test board of A RT8003 Min Typ Max Units -- -- 0 180 -- www.richtek.com ...
Page 18
... RT8003 Typical Operating Characteristics Output Voltage Deviation vs. Output Current 0.10% 0.1 0.00% 0 -0.10% -0.1 -0.20% -0.2 -0.30% -0.3 -0.40% -0.4 -0.50% -0.5 -0.60% -0.6 -0.70% -0.7 0 100 200 300 Output Current (mA) Efficiency vs. Output Current 100 100 3.3V 1.2V IN OUT 90 90% 80 80% 70 70% 60 60% 50 50% 40 40% 30 30% 20 20% 10 Output Current (mA) 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 ...
Page 19
... Quiescent Current vs. Temperature 250 V = 3.3V 0.65V IN FB 200 150 100 50 0 -50 - Temperature V vs. Input Voltage REF 0.52 0.515 0.51 0.505 0.5 0.495 0.49 0.485 0.48 2.5 3 3.5 4 Input Voltage (V) Load Transient Response V = 3.3V 1.2V IN OUT I = 50mA to 600mA OUT (50mV/Div) (200mA/Div) Time (250 s/Div) RT8003 75 100 125 ( C) 4.5 5 5.5 www.richtek.com 7 ...
Page 20
... RT8003 Steady State V = 3.3V 1.2V OUT Output Voltage (10mV/Div) (1V/Div Time (25 s/Div) Soft Start Function (500mV/Div) Output Voltage (2V/Div (200mA/Div) Input Current V = 3.3V 1.2V OUT Time (500 s/Div) www.richtek.com 8 = 0mA 1uF OUT OUT Output Voltage = 600mA OUT Steady State ...
Page 21
... PWM Operation During normal operation, the RT8003 regulates output voltage by switching at a constant frequency transferring the power to the load in each cycle by PWM. The RT8003 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 ...
Page 22
... 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 RT8003. 5.Connect all analog grounds to a command node and then connect the command node to the power ground behind the output capacitors ...
Page 23
... Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com 2 1 DETAIL A Pin #1 ID and Tie Bar Mark Options Dimensions In Inches Min Max 0.031 0.039 0.000 0.002 0.007 0.010 0.007 0.012 0.116 0.120 0.091 0.104 0.116 0.120 0.059 0.069 0.020 0.014 0.018 www.richtek.com RT8003 ...