LM25143数据手册集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF

特性 Features

• Functional Safety-Capable
• Documentation available to aid functional safety system design

• Versatile synchronous buck DC/DC controller
• Wide input voltage range of 3.5 V to 42 V
• 1% accurate, fixed 3.3-V, 5-V, or adjustable outputs from 0.6 V to 36 V
• 150°C maximum junction temperature
• 4-µA typical shutdown mode current
• 15-µA typical no-load standby current

• Two interleaved synchronous buck channels
• Dual channel or single-output multiphase
• 65-ns tON(min) for high VIN/VOUT ratio
• 60-ns tOFF(min) for low dropout

• Inherent protection features for robust design
• Shunt or inductor DCR current sensing
• Hiccup mode overcurrent protection
• Independent ENABLE and PGOOD functions
• Adjustable output voltage soft start
• VCC, VDDA, and gate-drive UVLO protection
• Thermal shutdown protection with hysteresis

• Optimized for CISPR 11 and CISPR 32 class B conducted and radiatedEMI requirements
• Slew-rate controlled adaptive gate drivers
• Spread spectrum reduces peak emissions

• 100-kHz to 2.2-MHz switching frequency
• SYNC in and SYNC out capability
• Selectable diode emulation or FPWM modes

• 6-mm × 6-mm VQFN-40 package
• Create a custom design using the LM25143 with WEBENCH Power Designer