SC4210AIMSTR Semtech, SC4210AIMSTR Datasheet
SC4210AIMSTR
Specifications of SC4210AIMSTR
Related parts for SC4210AIMSTR
SC4210AIMSTR Summary of contents
Page 1
... Telecom and networking cards Industrial applications Wireless infrastructure Set-top boxes Post regulated power supplies R1 0.015 1 8 VDD CAP GND FB Q1 FDB7030BL 4 5 COMP VOUT R3 R4 39k U1 1.30k SC4210A R5 499 1 SC4210A 8-Pin N-FET Linear Regulator Controller Vout = 1.8V @ 6Ap-k C6 C7opt. 0.01 10µF www.semtech.com ...
Page 2
... Electrical Characteristics section is not implied. Exposure to Absolute Maximum rated conditions for extended periods of time may affect device reliability Electrical Characteristics Unless specified -40 to 125°C, VDD = 1. 2004 Semtech Corp 10nF 100nF. T CAP ° SC4210A ° ° www.semtech.com ° C ° C ° C ° µ A ...
Page 3
... POWER MANAGEMENT Electrical Characteristics Unless specified -40 to 125°C, VDD = 1. Note: (1) This device is ESD sensitive. Use of standard ESD handling precautions is required. 2004 Semtech Corp. = 10nF 100nF. T CAP µ µ SC4210A µ www.semtech.com µ A µ µ µ A µ µ ...
Page 4
... TOP VIEW VDD 1 8 CAP 2 7 GND 3 6 COMP 4 5 (MSOP-8) Pin Descriptions 2004 Semtech Corp. Ordering Information Notes: CT (1) Only available in tape and reel packaging. A reel FB contains 2500 devices. (2) Lead free product. This product is fully WEEE and VOUT RoHS compliant ...
Page 5
... POWER MANAGEMENT Block Diagram Control Loop Block Diagram 2004 Semtech Corp. Figure 1. 5 SC4210A www.semtech.com ...
Page 6
... C · 1V ÷ 1.6µA OFF T During the Gate on-time, the maximum current the pass device may supply is limited to: 2004 Semtech Corp. The SC4210A incorporates a UVLO rising threshold of 1.73V with 90mV hysteresis. TYP Stability and Transient Performance The SC4210A topology allows the device to be configured ...
Page 7
... 2004 Semtech Corp. The basic analysis yields a two pole, two zero system. However, considering a limited bandwidth of the NPN buffer stage and external N-MOSFET, the system eventually rolls off due to the third pole at very high frequencies (10-20MHz). The low ESR ceramic capacitors ...
Page 8
... Rcomp to approximately 5.6k , which gives 50º unity gain of 1MHz; see Figure 6 for the actual circuit Bode plot taken with Ridley Instrument. 2004 Semtech Corp. Figure 6. Figure example of how close the actual results can be obtained with the simulation once the correct model has been defined ...
Page 9
... Ccomp = 100pF without an output capacitor, the system yields 78.5º with a unity gain frequency of 387kHz; see Figure 9. Figure 9. 2004 Semtech Corp. The pass transistor does add an additional pole to the transfer function. Generally speaking, this parasitic non- dominant pole is at frequencies well above the unity gain frequency but should be considered when various types of N-MOSFETs are available ...
Page 10
... POWER MANAGEMENT Evaluation Board Circuit Vin = 1.8V to +5V Vin=1 0. Evaluation Board Layout and Components Placement 2004 Semtech Corp VDD CAP 0.01 0 GND COMP VOUT SC4210A Denotes variable components 10 SC4210A Q1 FDB7030BL Vout > 0.5V Vout=0 0. www.semtech.com ...
Page 11
... REFERENCE JEDEC STD MO-187, VARIATION AA. Land Pattern - MSOP-8 NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. Contact Information Phone: (805)498-2111 FAX (805)498-3804 2004 Semtech Corp. DIMENSIONS INCHES e/2 DIM MIN NOM MAX MIN ...