国产替代 / 车规产品
Tuoer Wei TMI34030 Synchronous step-down DC-DC converter | Pin-to-Pin MPSMPQ9840
No.14775
Key Parameter Comparison
TMI34030 (Tore Micro) 
TMI34030 (Tore Micro) .pdf
TMI34030 (Tore Micro) .pdf MPQ9840 (MPS) MPQ9840 (MPS).pdf
MPQ9840 (MPS).pdf Input Voltage Range
3.3V–36V
3.3V–36V
Max Output Current
3.5A (Continuous)
3.5A (Continuous)
Switching Frequency
350kHz–2.5MHz Programmable
350kHz–2.5MHz Programmable
Operating Temperature Range
-40℃ ~ +125℃ (Automotive Grade Compatible)
-40℃ ~ +125℃ (Automotive Grade Compatible)
Package Type
QFN-16 (3×4mm, Pin-Compatible with MPQ9840)
QFN-16 (3×4mm, Pin-Compatible with MPQ9840)
Pin Definition
TDFN-3x3-10L
TDFN-3x3-10L
PIN
FAQ: Notes on Replacing MPQ9840 with TMI34030
1. PCB modification required for hardware replacement?
Pinout and package are fully compatible. Direct pin-to-pin replacement is available without PCB layout changes.
2. Any differences in startup circuit tuning?
TMI34030 features built-in soft-start and requires no extra external components. The original external startup circuit of MPQ9840 can be removed to prevent abnormal parameters.
3. How to adapt to different load conditions?
It performs better under light-load standby conditions. For full-load high-power and frequent load transient scenarios, pay attention to output voltage stability.
4. Is protection threshold adjustable?
TMI34030 has a fixed current limit threshold without external adjustment. Use it per normal rated load design.
5. Notes for operation under high-temperature environment?
Both share identical temperature range specs. MPQ9840 offers higher thermal margin. Heat dissipation margin is recommended for sealed high-temperature applications.
