SC1159EVB SEMTECH [Semtech Corporation], SC1159EVB Datasheet
SC1159EVB
Related parts for SC1159EVB
SC1159EVB Summary of contents
Page 1
POWER MANAGEMENT Description The SC1159 is a synchronous-buck switch-mode con- troller designed for use in single ended power supply ap- plications where efficiency is the primary concern. The controller is a hysteretic type, with a user selectable hys- teresis. The ...
Page 2
POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied ...
Page 3
POWER MANAGEMENT DC Electrical Characteristics (Cont.) Unless specified: 0 < T < 125°C, VIN = 12V ...
Page 4
POWER MANAGEMENT DC Electrical Characteristics (Cont ...
Page 5
POWER MANAGEMENT DC Electrical Characteristics (Cont ...
Page 6
POWER MANAGEMENT AC Electrical Characteristics (Cont.) (Note ...
Page 7
POWER MANAGEMENT Test Circuit Timing Diagram Simplified Block Diagram 2002 Semtech Corp. 7 SC1159 www.semtech.com ...
Page 8
POWER MANAGEMENT Pin Configuration Top View (28-Pin SOIC) Pin Descriptions ...
Page 9
POWER MANAGEMENT Pin Descriptions (Cont ...
Page 10
POWER MANAGEMENT Block Diagram 2002 Semtech Corp. 10 SC1159 www.semtech.com ...
Page 11
POWER MANAGEMENT Output Voltage Table 0 = GND OPEN ...
Page 12
POWER MANAGEMENT Applications Information - Functional Description Reference/Voltage Identification The reference/voltage identification (VID) section con- sists of a temperature compensated bandgap reference and a 5-bit voltage selection network. The 5 VID pins are TTL compatable inputs to the VID selection ...
Page 13
POWER MANAGEMENT Applications Information - Functional Description (Cont.) current transient. The overshoot during a high to low load current transient is reduced by subtracting the volt- age that is on the DROOP pin from VREF. The voltage on the IO ...
Page 14
POWER MANAGEMENT Application Circuit 2002 Semtech Corp. 14 SC1159 www.semtech.com ...
Page 15
POWER MANAGEMENT Typical Characteristics 100% 90% 80% 70% 60% 50% 40% 30% 20% 10 Current, A 100% 90% 80% 70% 60% 50% 40% 30% 20% 10 Current, A ...
Page 16
POWER MANAGEMENT Typical Characteristics (Cont.) 100% 90% 80% 70% 60% 50% 40% 30% 20% 10 Current, A 100% 90% 80% 70% 60% 50% 40% 30% 20% 10 Current, ...
Page 17
POWER MANAGEMENT Evaluation Board Artwork Lay Bottom Layer Bottom Layer Bottom Layer Bottom Layer Bottom Layer Mid ...
Page 18
POWER MANAGEMENT Evaluation Board Artwork (Cont Overla erla erla erla erlay Bottom Overlay Bottom Overlay Bottom Overlay Bottom Overlay Bottom Overlay 2002 ...
Page 19
POWER MANAGEMENT Materials List ...
Page 20
POWER MANAGEMENT Layout Guidelines (See pg Locate R8 and C2 close to pins 6 and 7. 2. Locate C1 close to pins 5 and 7. 3. Components connected to IOUT, DROOP, OCP, VHYST, VREFB, VSENSE, and SOFTST should ...