rc5037 Fairchild Semiconductor, rc5037 Datasheet
rc5037
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rc5037 Summary of contents
Page 1
... The RC5037 can generate output voltages from 1. 3.6V using external resistors. The RC5037 is designed to operate in a constant on-time control mode under all load conditions. Its accurate low TC reference eliminates the need for precision external compo- nents in order to achieve the tight tolerance voltage regula- tion required by many applications ...
Page 2
... DRV IFBH 3 6 GNDP IFBL 4 5 VFB RC5037 . Power supply for regulator control circuitry and voltage reference. Connect to . Power supply for DRV output driver. Connect to system 12V supply with R-C JA Conditions A PRODUCT SPECIFICATION 7V 13V +150° C -65 to +150° C 300° C 163° ...
Page 3
... VCCA = 4.75 to 5.25V 13A LOAD 13A LOAD VCCA = 4.75 to 5.25V 20MHz BW 13A LOAD LOAD Open Loop C = 180pF EXT Independent of load I = 13A LOAD . EXT RC5037 Min. Typ. Max. Units 1.5 3 ppm/˚ ±55 ±100 mV ...
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... RC5037 Typical Operating Characteristics ° (VCCA = 5V, and T = +25 C using circuit in Figure 1, unless otherwise noted) A Efficiency vs. Output Current Output Current Transient Response, Time (100 s/division) 4 +1.5 +1.0 +0.5 Nom -0.5 -1.0 -1 Output Voltage vs. Temperature, I +0.50 +0.25 Nom. -0.25 -0. ...
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... C6 180pF (continued) Pin 7 (DRV), 0.1A Load Time (1µs/division) + +C4 0 1200 F 1200 F 1200 F FDB6030L Q1 L2 4 MBRB1545CT RC5037 4 5 Figure 1. 13A at 3.3V Application Schematic Pin 7 (DRV), 10A Load Time (1µs/division CORE 5.2m ... C14 2.43K 1500 RC5037 5 ...
Page 6
... The driver’s power and ground are separated from the overall chip power and ground for added switching noise immunity. Internal Reference The reference in the RC5037 is a precision band-gap type reference. Its temperature coefficient is trimmed to provide a near zero TC. Constant-On-Time Oscillator The RC5037 switch-mode oscillator is designed as a fi ...
Page 7
... MOSFET will continue to be reduced until the cur- rent limit value is reached. At this point, the RC5037 will continuously deliver the limit current at a reduced output voltage level. The short circuit comparator threshold voltage (2) is typically 90mV, with a tolerance of ± ...
Page 8
... The MOSFET should be placed in such a way as to minimize the length of the gate drive path from the RC5037 SDRV pin. This trace should be kept under 0.5" for optimal performance. Excessive lead length on this trace will cause high frequency noise resulting from the par- asitic inductance and capacitance of the trace ...
Page 9
... Power and Ground Connections The connection of VCCA to the 5V power supply plane should be short and bypassed with a 0.1µF directly at the VCCA pin of the RC5037. The ideal connection would be a via down to the 5V power plane. A similar arrangement should be made for the VCCP pin that connects to +12V. ...
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... Terminal numbers are shown for reference only. 0. "C" dimension does not include solder finish thickness. 5. Symbol "N" is the maximum number of terminals. 4.01 2 6.20 0.50 1. 0.10 ccc C RC5037 ...
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... RC5037 Ordering Information Product Number RC5037M LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems ...
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... TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks. ACEx™ CoolFET™ CROSSVOLT™ CMOS FACT™ FACT Quiet Series™ ® FAST FASTr™ ...