产品特点 FEATURES

1 Input voltage range:2.95-3.65V DC

2 Output current capacity: up to22A

3 Adjustable output voltage:0.8V to2.5V

4 High efficiency: up to93%

5 Long reliability: MTBF over3.7 million hours

6 Wide operating temperature range:-40°C to85°C

7 Compact size:38.1×22.1×9.00mm

8 Safety protections: input under-voltage protection, output short-circuit protection, over-temperature protection

9 Functional features: Auto Track sequencing pin for power-up/down sequence control, Margin Up/Down controls for ±5% voltage adjustment, Pre-Bias startup capability to handle backfed current

10 RoHS compliant, meeting relevant clauses of RoHS directive 2011/65/EU

11 Remote sense function to compensate voltage drop between module and load

12 Inhibit pin for remote on/off control

13 Industry standard POLA™ compatible

14 High-quality manufacturing: ISO9001/14001 certified, 6σ and SPC methods used

使用场景 APPLICATIONS

1 Intermediate bus applications powered by regulated bus converters

2 Powering complex digital systems including DSPs, microprocessors, ASICs, FPGAs in telecom equipment

3 IT infrastructure like servers and data center hardware

4 Industrial control systems operating in wide temperature environments

5 Applications requiring sequential power-up/down of multiple supply voltages

6 Dynamic load testing scenarios to verify load circuit operation over supply voltage range

7 High-reliability applications demanding long service life (e.g., telecom base stations)

注意事项 PRECAUTIONS

1 Ensure sufficient cooling: rely on conduction (from pins to PCB) and convection (airflow across module); refer to output current derating graphs for available current under different temp and airflow conditions

2 External capacitor selection: input capacitor ≥1000µF with minimum700mA-r-m-s ripple current rating; output capacitor ≥330µF with equivalent ESR no lower than4mΩ (7mΩ for single capacitor)

3 Remote sense pin: if unused, leave open; if used, connect directly to the load point to compensate voltage drop

4 Margin Up/Down controls: assert to GND to adjust output voltage by +5% or -5% respectively

5 Pre-Bias startup: ensure backfed current from other power sources does not exceed design limits

6 Soldering guidelines: follow Pb-free or SnPb process specs—for Pb-free, pin temp should exceed solder melting point (217-221°C) for ≥30s, peak temp ≤260°C; for SnPb, pin temp ≥183°C for ≥30s, peak temp ≤225°C

7 Storage and handling: keep in dry pack (MSL3 for Pb-free) to avoid moisture damage; if exposed to uncontrolled environment, bake according to IPC/JEDEC J-STD-033A

8 PCB layout: use low-resistance, low-inductance traces; connect ground layer to module output and chassis for better EMC performance

9 Do not exceed absolute maximum ratings (input voltage:2.95-3.65V, operating temp:-40°C to85°C, output current:22A)

PMH4518TSR-PDF数据手册-参考资料