LM5176RHFR
Active55V WIDE VIN SYNCHRONOUS 4-SWITCH BUCK-BOOST CONTROLLER
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LM5176RHFR
Active55V WIDE VIN SYNCHRONOUS 4-SWITCH BUCK-BOOST CONTROLLER
Technical Specifications
Parameters and characteristics for this part
| Specification | LM5176RHFR |
|---|---|
| Clock Sync | True |
| Control Features | Current Limit, Power Good, Soft Start, Frequency Control, Enable |
| Frequency - Switching [Max] | 600 kHz |
| Frequency - Switching [Min] | 100 kHz |
| Function | Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 28-VFQFN Exposed Pad |
| Supplier Device Package | 28-VQFN (5x4) |
| Synchronous Rectifier | True |
| Topology | Buck-Boost |
| Voltage - Supply (Vcc/Vdd) [Max] | 55 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.2 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 3000 | $ 3.81 | |
| Texas Instruments | LARGE T&R | 1 | $ 5.34 | |
| 100 | $ 4.36 | |||
| 250 | $ 3.42 | |||
| 1000 | $ 2.90 | |||
Description
General part information
LM5176-Q1 Series
The LM5176-Q1 is a synchronous four-switch buck-boost DC/DC controller capable of regulating the output voltage at, above, or below the input voltage. The LM5176-Q1 operates over a wide input voltage range of 4.2 V to 55 V (60 V absolute maximum) to support a variety of applications.
The LM5176-Q1 employs current-mode control both in buck and boost modes of operation for superior load and line regulation. The switching frequency is programmed by an external resistor and can be synchronized to an external clock signal.
The device also features a programmable soft-start function and offers protection features including cycle-by-cycle current limiting, input undervoltage lockout (UVLO), output overvoltage protection (OVP), and thermal shutdown. In addition, the LM5176-Q1 features optional average input or output current limiting, optional spread spectrum to reduce peak EMI, and optional hiccup mode protection in sustained overload conditions.
Documents
Technical documentation and resources
