RC5036 ETC-unknow, RC5036 Datasheet
RC5036
Available stocks
Related parts for RC5036
RC5036 Summary of contents
Page 1
... DC-DC converter output between 3.5V and a user-selectable voltage from 1.5V to 3.6V as well as an enable function to allow the linear regulator to be turned off when not required. RC5036 has built-in Soft Start feature which offers system protection dur- ing power-up by reducing both inrush current and output overshoot. Using minimal external components, the RC5036 can be confi ...
Page 2
... Internal Reference The reference in the RC5036 is a precision band-gap type reference. Its temperature coefficient is trimmed to provide a near zero TC. For guaranteed stable operation under all load- ing conditions ...
Page 3
... Pentium processors in order to simplify the task of designing a “flexible motherboard” that can accept both varieties of CPU. This pin (VCC2DET) is located at position AL1, and is internally bonded to ground on the P55C and left uncon- nected on the P54 and its equivalents. The RC5036 has two Pin Assignments Pin Descriptions Pin ...
Page 4
... RC5036 Pin Descriptions (continued) Pin Pin Name Number Pin Function Description GNDP 8 Power Ground. Return pin for high currents flowing in pins 9, 10 and 12 (SDRV, VCCP and LDRV). Connect to a low impedance ground. See Applications Discussion for details. SDRV 9 FET driver output for switching regulator. Connect this pin to the gate of the N-channel MOSFET M1 as shown in Figure 14. The trace from this pin to the MOSFET gate should be kept as short as possible (less than 0.5" ...
Page 5
... 180pF EXT Min. Typ. Max. Units 4.75 5 5.25 11.4 12 12.6 2.4 0 Min. Typ. Max. Units 3.5 1.5 3.6 -1.2 +1.2 % 0.10 0.15 %Vo 0.9 1.3 % 100 100 3.5 . See Typical Operating Characteristics EXT RC5036 ppm ...
Page 6
... RC5036 Electrical Characteristics – Linear Regulator (VCCA = 5V, VCCL = 12V using circuit in Figure 14, unless otherwise noted) A The denotes specifications which apply over the full ambient operating temperature range. Parameter Conditions 1 Output Voltage, VOL Set by external resistors 2 Setpoint Accuracy I =0.5A, using 0.1% resistors ...
Page 7
... Figure 3. Switcher Output Voltage vs. Load (A) SW Figure 5. Linear Regulator Shortcircuit 100 125 Output Current ( Output Current (A) Characteristic Rsense = 7 m Time (100 s/division) Figure 7. Switcher Transient Response (0.5 to 5.5A Load Step) 65-5036-03 RC5036 3.5V 2. ...
Page 8
... RC5036 Typical Operating Characteristics Time (2 s/division) Figure 8. Switcher Output Ripple (BW = 20MHz, I Time (5ms/division) Figure 10. Switcher Turn-on Response Time (1 s/division) Figure 12. Pin 9 (SDRV Amp Load 8 (continued) Figure 9. Linear Turn-on Response = 5A) SW Figure 11. Linear Turn-on Response Figure 13. Pin 9 (SDRV 0.1 Amp Load ...
Page 9
... PRODUCT SPECIFICATION Test Circuit Configurations Figure 14. P54/P55C, K6 Single/Dual Power Supply Application Schematic RC5036 9 ...
Page 10
... RC5036 Table 1. Bill of Materials for a RC5036 P55C, K6 Application Manufacturer Qty. Reference Part Order # 4 C7, C8, Panasonic ECU-V1H104ZFX C9, C10 1 C11 Panasonic ECU-V1H103KBX 1 C13 Panasonic ECU-V1H181JCG 1 C14 Panasonic ECSH1CY105R See C Sanyo 6MV1500GX OUT Table 2 See C Sanyo 10MB1200GX IN Table Sanyo 6MV1500GX 1 DS1 Motorola MBR1545CT ...
Page 11
... RC5036 design equations, please refer to Applica- tion Note 48. Output Voltage Selection Feedback Voltage Divider The RC5036 precision reference is trimmed to be 1.5V nom- inally. When using the RC5036, the system designer has complete flexibility in choosing the output voltage for each regulator from 1.5V to 3.6V. This is done by appropriately selecting the feedback resistors ...
Page 12
... The RC5036 will begin to limit the output current to the load by turning off the top-side FET driver when the voltage across the current-sense resistor ...
Page 13
... PCB. Trace resis- tance can contribute significant errors. The traces to the IFBH and IFBL pins of the RC5036 should be Kelvin con- nected to the pads of the current-sense resistor. To minimize the influence of noise, the two traces should be run next to each other ...
Page 14
... The FET should be placed in such a way as to minimize the length of the gate drive path from the RC5036 SDRV pin. This trace should be kept under 0.5" for optimal performance. Excessive lead length on this trace causes high frequency noise resulting from the parasitic inductance and capacitance of the trace ...
Page 15
... Power and Ground Connections The connection of VCCA to the 5V power supply plane should be short and bypassed with a 0.1 F directly at the VCCA pin of the RC5036. The ideal connection would be a via down to the 5V power plane. A similar arrangement should be made for the VCCL pin that connects to +12V, though this one is somewhat less critical since it powers only the linear op-amp ...
Page 16
... RC5036 Evaluation Board Raytheon Electronics Semiconductor Division provides an evaluation board for verifying the system level performance of the RC5036. The evaluation board provides a guide as to what can be expected in performance with the supplied external components and PCB layout. Please call your local Sales Office or Raytheon Electronics Semiconductor Divi- sion at 650-968-9211 for an evaluation board ...
Page 17
... PRODUCT SPECIFICATION Notes: RC5036 17 ...
Page 18
... RC5036 Notes: 18 PRODUCT SPECIFICATION ...
Page 19
... Terminal numbers are shown for reference only "C" dimension does not include solder finish thickness Symbol "N" is the maximum number of terminals – C – LEAD COPLANARITY ccc C RC5036 ...
Page 20
... Ordering Information Product Number RC5036M The information contained in this data sheet has been carefully compiled; however, it shall not by implication or otherwise become part of the terms and conditions of any subsequent sale. Raytheon’s liability shall be determined solely by its standard terms and conditions of sale. ...