Bel Power Solutions point-of-load converters are recommended for use with regulated bus converters in an Intermediate Bus Architecture (IBA). The YM05S05 non- isolated dc-dc converters deliver up to 5 A of output current in an industry-standard surface-mount package. Operating from a 3.0 5.5 V input, these converters are ideal choices for Intermediate Bus Architectures where Point-of-Load (POL) power delivery is generally a requirement. They provide an extremely tight regulated programmable output voltage from 0.7525 V to 3.63 V. The Y-Series of converters provides exceptional thermal performance, even in high temperature environments with minimal airflow. No derating is required up to 85 C, even without airflow at natural convection. This performance is accomplished through the use of advanced circuitry, RoHS lead free and lead-solder-exempted products packaging and processing techniques to achieve a design are available possessing ultra-high efficiency, excellent thermal Delivers up to 5 A management and a very low-body profile. No derating up to 85 C The low-body profile and the preclusion of heat sinks Surface-Mount package minimize impedance to system airflow, thus enhancing Industry-standard footprint and pinout cooling for both upstream and downstream devices. The Small size and low profile: use of 100% automation for assembly, coupled with 0.80 x 0.45 x 0.247 advanced power electronics and thermal design, results 20.32 mm x 11.43 mm x 6.27 mm in a product with extremely high reliability. Weight: 0.08 oz 2.22 g Coplanarity less than 0.003, maximum Synchronous Buck Converter topology Start up into pre-biased output No minimum load required Programmable output voltage via external resistor Operating ambient temperature: -40 C to 85 C Remote ON/OFF Fixed frequency operation High efficiency no heat sink required Reduces total solution board area Auto-reset output over-current protection Tape and reel packing Auto-reset over-temperature protection Compatible with pick & place equipment High reliability, MTBF approx. 69 Million Hours Minimizes part numbers in inventory calculated per Telcordia TR-332, Method I Case 1 All materials meet UL94, V-0 flammability rating Safety approved to UL/CSA 62368-1 and EN/IEC 62368-1 Conditions: T = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 5 VDC, Vout = 0.7525 3.63 V, unless otherwise specified. A PARAMETER NOTES MIN TYP MAX UNITS Absolute Maximum Ratings Input Voltage Continuous -0.3 6 VDC Operating Ambient Temperature -40 85 C Storage Temperature -55 125 C Feature Characteristics Switching Frequency 300 kHz 1 Output Voltage Trim Range By external resistor, See Trim Table 1 0.7525 3.63 VDC 2 Turn-On Delay Time Full resistive load With Vin = (Converter Enabled, then Vin applied) From Vin = Vin(min) to Vo = 0.1* Vo(nom) 3.5 ms With Enable (Vin = Vin(nom) applied, then enabled) From enable to Vo = 0.1*Vo(nom) 3.5 ms 2 Rise time (Full resistive load) From 0.1*Vo(nom) to 0.9*Vo(nom) 3.5 ms Converter Off 2.4 5.5 VDC 3 ON/OFF Control Converter On -5 0.8 VDC Input Characteristics For Vout 2.5 V 4.5 5.0 5.5 VDC Operating Input Voltage Range For Vout 2.5 V 3.0 5.0 5.5 VDC Input Undervoltage Lockout Turn-on Threshold 2.3 2. 5 VDC Turn-off Threshold 2 2.2 VDC Maximum Input Current VIN = 4.5 VDC, IOUT = 5 A VOUT = 3.3 VDC 4.2 ADC VIN = 3.0 VDC, IOUT = 5 A VOUT = 2.5 VDC 4.5 ADC V = 3.0 VDC, I = 5 A V = 2.0 VDC 3.7 ADC IN OUT OUT V = 3.0 VDC, I = 5 A V = 1.8 VDC 3.4 ADC IN OUT OUT V = 3.0 VDC, I = 5 A V = 1.5 VDC 2.9 ADC IN OUT OUT V = 3.0 VDC, I = 5 A V = 1.2 VDC 2.35 ADC IN OUT OUT V = 3.0 VDC, I = 5 A V = 1.0 VDC 2.0 ADC IN OUT OUT VIN = 3.0 VDC, IOUT = 5 A VOUT = 0.7525 VDC 1.6 ADC Input Standby Current (Converter disabled) Vin = 5.0 VDC 2 mA Input No Load Current (Converter enabled) Vin = 5.5 VDC VOUT = 3.3 VDC 70 mA V = 2.5 VDC 65 mA OUT V = 2.0 VDC 60 mA OUT V = 1.8 VDC 55 mA OUT V = 1.5 VDC 50 mA OUT V = 1.2 VDC 40 mA OUT VOUT = 1.0 VDC 35 mA VOUT = 0.7525 VDC 30 mA Input Reflected-Ripple Current - is See Fig. D for setup. (BW = 20 MHz) TBD mAP-P Notes: 1 The output voltage should not exceed 3.63 V. 2 Note that startup time is the sum of turn-on delay time and rise time. 3 The converter is on if ON/OFF pin is left open. 866.513.2839 tech.support psbel.com 2015 Bel Power Solutions, Inc. BCD.00635 AA1