RT8453BGSP Richtek USA Inc, RT8453BGSP Datasheet
RT8453BGSP
Specifications of RT8453BGSP
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RT8453BGSP Summary of contents
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... Note : Richtek Green products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Marking Information RT8453BGSP : Product Number RT8453B YMDNN : Date Code GSPYMDNN DS8453B-00 August 2010 Features Input Operating Range 4.5 to 40V 1 ...
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RT8453B Typical Application Circuit V IN 4.5V to 40V 10 Analog Dimming or PWM Dimming Control 5V R5 10k C6 3.3nF Functional Pin Description Pin No. Pin Name 1 ISN ACTL GND ...
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Function Block Diagram VCC 4. ACTL DS8453B-00 August 2010 OSC Shutdown + - - 6µ – ISN (mV) 190 0 0.3 1.2 Figure 1 ...
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RT8453B Absolute Maximum Ratings Supply Input Voltage, V ----------------------------------------------------------------------------------------------- 45V CC SW Pin Voltage at Switching Off, ISN -------------------------------------------------------------------------------- 45V ACTL ------------------------------------------------------------------------------------------------------------------------- 8V (Note 6) EN ----------------------------------------------------------------------------------------------------------------------------- 20V Power Dissipation 25° SOP-8 (Exposed Pad) ...
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Parameter Maximum Duty Cycle (Note 5) SW On-Voltage SW Current Limit Soft-Start Soft-Start Current Over Temperature Protection Thermal Shutdown Temperature T Thermal Shutdown Hysteresis Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the ...
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RT8453B Typical Operating Characteristics Efficiency vs. Input Voltage 100 1.00 95 0.95 90 0.90 0.85 85 0.80 80 0.75 75 0. 25° 0. Input Voltage (V) LED Current vs. ...
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Supply Current vs. Input Voltage 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 Input Voltage(V) Continuous Mode Operation V LX (10V/Div) I LED (200mA/Div) 3 LEDs, V Time (1μs/Div) Power On from (5V/Div) ...
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RT8453B Applications Information The RT8453B is specifically designed to be operated in buck converter applications. This device uses a fixed frequency, current mode control scheme to provide excellent line and load regulation. The control loop has a current sense amplifier ...
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The ripple current ΔI can be calculated : L ⎡ ⎤ ⎡ ⎤ OUT OUT Δ = × − ⎢ ⎥ ⎢ ⎥ L × ⎣ ⎦ ⎣ ⎦ Where ...
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RT8453B Place L1 and D1 as close to each other as possible. The trace should be as short and wide as possible. The input capacitor C1 must be placed as close to VCC pin as possible. Place the compensation components ...
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Outline Dimension EXPOSED THERMAL PAD (Bottom of Package) Symbol Option 1 Option 2 Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 ...