LM5177
Synchroner Abwärts-Aufwärtsregler mit 4 Schaltern, großem VIN-Bereich bis 60 V und bidirektionalem B
LM5177
- Wide input range from 3.5 V to 60 V (85-V absolute maximum)
- Minimum 2.8 V when V (BIAS) > 3.5 V
- Output voltage from 3.3 V to 60 V
- Low shutdown I Q of 3 µA
- Low operating I Q of 60 µA
- 3% reverse current limit accuracy for precise charging currents
- Average input and output current monitor or limiter
- Dynamic output voltage tracking for PWM or analog input signals
- Power save mode (PSM) selectable for high light load efficiency
- Two integrated high-voltage supply LDOs with automatic selection
- 2-A peak current logic level gate driver
- Integrated bootstrap diode
- Bootstrap overvoltage and undervoltage protection
- Fixed frequency across all operating modes (boost, buck-boost, buck)
- Forced PWM mode selectable
- Switching up to 600 kHz for small solution and component size
- External clock synchronization
- Spread spectrum operation selectable
- Adjustable undervoltage protection
- Hiccup overcurrent and short protection
The LM5177 is a four switch buck-boost controller. The device provides a regulated output voltage if the input voltage is higher, equal, or lower than the adjusted output voltage. In power safe mode, the device supports high efficiency with low output loads due to its low quiescence currents. The LM5177 runs at a fixed switching frequency, which can be set through the RT or SYNC pin. The switching frequency remains the same during buck, boost, and buck-boost operation. The integrated and optional average current monitor can help monitor and limit input and output current of the LM5177. This feature also supports charging backup power elements, like batteries or capacitors, with constant current (CC) and constant voltage (CV).
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | LM5177 60-V Wide VIN Bidirectional 4-Switch Buck-Boost Controller datasheet (Rev. D) | PDF | HTML | 26 Jul 2023 |
Application note | Parallel Operation of the Buck-Boost Converters Using LM5177 Buck-Boost Controller (Rev. A) | PDF | HTML | 27 Feb 2024 | |
Application brief | A Simple Constant Voltage Regulation Using the MODE Pin (Rev. A) | PDF | HTML | 15 Feb 2024 | |
Application note | Layout Optimization of 4-Switch Buck-Boost Converters | PDF | HTML | 05 Sep 2023 | |
Application brief | Precise Current Limiter Over Wide Operation Voltages in Buck-Boost Converters | PDF | HTML | 05 Sep 2023 | |
User guide | LM5177 Buck-Boost Controller Evaluation Module User's Guide (Rev. B) | 27 Apr 2023 | ||
Application brief | Dynamic Current Tracking With the LM5177 4-Switch Buck Boost Controller | 24 Feb 2023 | ||
Application brief | Constant Current Operation Using the Internal Current Limiter | 27 Jan 2023 | ||
Certificate | LM5177EVM-HP EU RoHS Declaration of Conformity (DoC) | 16 Dez 2021 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
LM5177EVM-HP — LM5177 Evaluierungsmodul mit 4-Schalter-Abwärts-Aufwärts-Controller
Gehäuse | Pins | Herunterladen |
---|---|---|
HTSSOP (DCP) | 38 | Optionen anzeigen |
Bestellen & Qualität
- RoHS
- REACH
- Bausteinkennzeichnung
- Blei-Finish/Ball-Material
- MSL-Rating / Spitzenrückfluss
- MTBF-/FIT-Schätzungen
- Materialinhalt
- Qualifikationszusammenfassung
- Kontinuierliches Zuverlässigkeitsmonitoring
- Werksstandort
- Montagestandort
Support und Schulungen
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