SY6885BQDC

SY6885B 60V, 5A Full Protection Switch General Description Features The SY6885B is a current limit switch with programmable input over voltage protection and output voltage clamping. Extremely low RDS(ON) of the integrated protection N-channel FET helps to reduce power loss during normal operation. Programmable soft-start time controls the slew rate of the output voltage during start-up. Independent enable control allows the complicated system sequencing control. The device also integrates thermal shutdown protection. This device along with small QFN3×3-16 footprint provides small PCB area application. • Wide Input Voltage Range from 4V to 48V with Surge up to 60V • Low Bias Current: 100µA Typical • Extremely Low RDS(ON) for the Integrated Protection Switch: 40mΩ • Programmable Soft-start • Programmable Current Limit • OCP/TSD/OVP Protection: Auto-recovery • Input Over Voltage Protection with Adjustable Threshold and Auto-recovery • Programmable Output Voltage Clamping • RoHS Compliant and Halogen Free • Compact Package: QFN3×3-16 Ordering Information SY6885 □(□□)□ Package type QFN3×3-16 l-F or 半 Typical Applications • Notebook PC • Server • Service PC Note ---- 导 小 Ordering Number SY6885BQDC Applications 芯 Temperature Code Package Code Optional Spec Code OUT yC Sil erg SY6885B Rev.0.9B © 2021 Silergy Corp. C8 (Opt.) R3 OVP SY6885B R4 EN C2 C3 VCP R2 on fid VOUT IN R1 en C5 C4 tia VIN D1 ILMT GND SS C7 R5 Figure 1. Schematic Diagram Silergy Corp. Confidential- Prepared for Customer Use Only 1 All Rights Reserved. SY6885B VCP GND ILMT SS OVP EN Pinout (top view) 1 2 3 4 5 6 IN 7 8 IN OUT 9 10 OUT IN 11 12 IN OUT 13 14 OUT IN 15 16 IN (QFN3×3-16) Top Mark: BEOxyz (device code: BEO, x=year code, y=week code, z= lot number code) Pin Number IN 7,8,11,12,15,16 GND 2 OVP 5 ILMT 3 SS 4 EN 6 VCP 1 OUT 9, 10, 13, 14 Pin Description Power input pin. Decouple high frequency noise by connecting at least 0.1µF MLCC to ground. Ground pin. Over voltage protection input. Connect to the center of resistor divider. The protection voltage is: VOVP = 1.2V× (R1+R2)/R2. Current limit program pin. Connect a resistor from this pin to ground to program the current limit. Soft-start time program pin. Connect a capacitor to ground to program the softstart time. Enable control input. Pull it high to enable the IC. Output clamping voltage setting pin. The clamping voltage equals to VCLAMP=1.2V× (R3+R4)/R4. Power output pin. Sil erg yC on fid en tia l-F or 半 导 小 芯 Pin Name SY6885B Rev.0.9B © 2021 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only 2 All Rights Reserved. SY6885B Block Diagram OUT IN Soft-start SS UVLO Charge Pump Driver Discharge Control EN Current Sense ILMT Control Logic 1.2Vref OVP VCP 1.2Vref GND Thermal Detect 0.2Vref 芯 Figure 2. Block Diagram 导 小 Absolute Maximum Ratings (Note 1) 半 IN -------------------------------------- ---------------------------------------------------------- -0.3V to 60V EN, OUT, OVP, VCP ---------------------------------------------------------------------------------------------- -0.3V to 60V SS, ILMT ------------------------------------------------------------------------------------------------------------- -0.3V to 3.6V Power Dissipation, PD @ TA = 25°C QFN3×3-16, -------------------------------------------------------------------- 2.463W Package Thermal Resistance (Note 2) l-F or θ JA ------------------------------------------------------------------------------------------------------------ 40.596°C/W θ JC ------------------------------------------------------------------------------------------------------------ 10.656°C/W fid en tia Junction Temperature Range ------------------------------------------------------------------------------------- -40°C to 125°C Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------------ 260°C Storage Temperature Range -------------------------------------------------------------------------------------- -65°C to 150°C on Recommended Operating Conditions (Note 3) Sil erg yC IN --------------------------------------------------------------------------------------------------------------------------- 4V to 48V EN, OUT, OVP, VCP --------------------------------------------------------------------------------------------------- 0V to 48V SS, ILMT ----------------------------------------------------------------------------------------------------------------- 0V to 3.3V Junction Temperature Range ------------------------------------------------------------------------------------- -40°C to 125°C SY6885B Rev.0.9B © 2021 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only 3 All Rights Reserved. SY6885B Electrical Characteristics (VIN = 48V, CSST=100nF, CIN = 10µF, COUT = 10µF, TA = 25°C, unless otherwise specified) Symbol VIN VUVLO VHYS IBIAS ISHDN RDS(ON) ILMT VVCPREF VOVPREF tOVP VOVP,HYS tSS Test Conditions VIN=48V, EN=3V VIN=48V, EN=0 VIN=5V, EN=3V (Note 5) ILMT = 5A,VIN=5V (Note 4)CSST=100nF, VIN=24V, R3/R4=200k/10k VEN_ON VEN_OFF RDIS THYS Typ 0.2 100 10 40 1 -30% 1.176 1.176 1.2 1.2 200 120 23.2 -30% 2 Max 48 3.9 150 60 5 30% 1.224 1.224 Unit V V V µA µA mΩ A ILIM V V ns mV ms 30% 13k V V Ω 150 °C 20 °C 0.4 芯 TSD Min 4 3.5 导 小 Parameter Input Voltage Range Input UVLO Threshold UVLO Hysteresis Bias Current Shutdown Current Protection FET RON Current Limit Program Range Current Limit Accuracy VCP Reference Voltage OVP Reference Voltage OVP Response Time OVP Recovery Hysteresis Soft-start Time Soft-start Time Accuracy EN Turn-on Threshold EN Turn-off Threshold Output Discharge Resistor Thermal Shutdown Temperature Thermal Shutdown Hysteresis l-F or 半 Note 1: Stresses beyond the “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability en tia Note 2: θ JA is measured in the natural convection at TA = 25°C on a low effective single layer thermal conductivity test board of JEDEC 51-3 thermal measurement standard. Pin1 of QFN3×3-16 packages is the case position for θ JC measurement. on fid Note 3: The device is not guaranteed to function outside its operating conditions. yC Note4: Recommended Current Soft-start Time Program Table Sil erg SST cap (nF) Rise (ms) Condition: VIN=24V, R3/R4=200k/10k None 10 47 1.4 2.8 13.1 100 27.8 Recommended formula for CSS & soft-start slew rate calculation: R + R LOW  1  UP , No external C7 T R LOW dv  SS_DLT voltage loop soft-start. = dt  I INT R UP + R LOW  ,t SS  t SS_DLT  C7 R LOW SY6885B Rev.0.9B © 2021 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only 4 All Rights Reserved. SY6885B 1  1  , No external C7 T R di  SS_DLT ILMT  11 current loop soft-start. = dt  I INT 1  ,t  t SS_DLT  C7 R ILMT 11 SST Where, TSS_DLT is the internally fixed default soft-start time, about 1.4ms, which means there’s no any external C7; IINT is the internal current source, about 4.1µA ; RUP and RLOW are the external resistors for output voltage OVP or Clamping setting; RILMT is current limit setting resistor. Note5: Recommended Current Limit Program Table Current Limit Resistance (kΩ) 11 5.5 4.4 Current Limit (A) 1.0 2.0 2.5 Recommended Formula for RLIM & Current Limit Calculation: 3.1 3.5 2.8 4.0 2.4 4.5 2.2 5.0 11K () ILIM Sil erg yC on fid en tia l-F or 半 导 小 芯 R5 = 3.7 3.0 SY6885B Rev.0.9B © 2021 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only 5 All Rights Reserved. SY6885B 导 小 Bottom View Sil erg yC on fid en tia l-F or 半 Top View 芯 QFN3×3-16 Package Outline Drawing Side View Notes: Recommended PCB layout (Reference Only) All dimension in millimeter and exclude mold flash & metal burr. SY6885B Rev.0.9B © 2021 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only 6 All Rights Reserved. SY6885B Taping & Reel Specification 1. Taping orientation QFN3×3 导 小 芯 Feeding direction Reel Size Sil erg yC on fid en tia l-F or 半 2. Carrier Tape & Reel specification for packages Package type QFN3×3 Tape width (mm) Pocket pitch(mm) Reel size (Inch) Trailer length(mm) Leader length (mm) Qty per reel (pcs) 12 8 13" 400 400 5000 3. Others: NA SY6885B Rev.0.9B © 2021 Silergy Corp. Powered by TCPDF (www.tcpdf.org) Silergy Corp. Confidential- Prepared for Customer Use Only 7 All Rights Reserved.