LM5176RHFR

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LM5176RHFR

IC POWER REGULATOR

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Specifications

Supplier Texas Instruments
Package Tape & Reel (TR)
ProductStatus Active
OutputType Transistor Driver
Function Step-Up/Step-Down
OutputConfiguration Positive
Topology Buck-Boost
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 4.2V ~ 55V
Frequency-Switching 100kHz ~ 600kHz
SynchronousRectifier Yes
ClockSync Yes
ControlFeatures Current Limit, Enable, Frequency Control, Power Good, Soft Start
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 28-VFQFN Exposed Pad

Overview

Description

LM5176RHFR is TI’s high-performance DC-DC controller that drives external MOSFETs to regulate a wide-input DC supply (auto/industrial range) using buck, boost, or buck-boost operation with interleaved two-phase operation.
Key points:
- Wide input range and bidirectional regulation capability (output can be higher or lower than input).
- Two-phase interleaved control for better ripple and transient response.
- External N-channel MOSFET gate-drive capabilities, with current-mode control.
- Programmable switching frequency (hundreds of kHz), adjustable output via feedback, soft-start.
- Protections: overcurrent/short-circuit, undervoltage lockout, thermal protection.
- Suitable for automotive power rails, battery charging, and other DC-DC applications requiring wide input range and high efficiency.
- RHFR suffix mostly indicates RoHS/halogen-free packaging; check datasheet for exact package and spec details.
For exact electrical specs, pinout, and application circuitry, refer to the TI LM5176RHFR datasheet.

Features

Here are the typical features of LM5176RHFR (high-level, concise):
- Wide-input, automotive-friendly range (approximately 4.5 V to 60 V with transient protection for automotive use)
- Buck, boost, and buck-boost operation
- Integrated synchronous MOSFETs (high-side and low-side) in a single package
- Current-mode PWM control for fast transient response
- Programmable switching frequency with simple external compensation
- Adjustable output via feedback network; supports remote sensing
- Soft-start and enable pin for controlled start‑up
- Robust protection: cycle-by-cycle current limit, overcurrent/short-circuit protection, overvoltage, UVLO, thermal shutdown
- Fault reporting and latch/power-good signaling
- Suitable for automotive/industrial environments (AEC-Q100 qualified variant, RoHS)
Note: specific electricals (exact voltage ranges, timing, and pinout) can vary by package/revision; consult the datasheet for exact numbers.

Package

HTSSOP-20 package (20-pin) with exposed pad.

Pinout

Pin count: 28 pins.
Function: LM5176RHFR is a high‑voltage buck/boost DC‑DC controller (synchronous topology; used for wide-input regulation, often in automotive applications).

Manufacturer

LM5176RHFR is manufactured by Texas Instruments (TI). TI is a global American semiconductor company that designs and manufactures analog and mixed-signal integrated circuits, including power-management and embedded processing ICs.

Application

LM5176RHFR is a wide-input (up to ~60V) 4‑switch synchronous buck‑boost regulator. Typical applications:
- Automotive DC‑DC power supplies (ECUs, infotainment, body electronics)
- Industrial control and motor‑drive power modules
- Telecom/network power systems
- Battery‑powered and solar regulator circuits requiring buck/boost operation
- Any system needing high efficiency over a wide input range

Equivalent

Direct equivalents to LM5176RHFR are scarce; it is TI’s 60 V, 4‑phase buck/boost controller. Closest non‑TI options by function include Analog Devices LTC3895 (multiphase buck regulator) and LT8700/LT8705 families (buck‑boost controllers). Within TI, consider other LM5176 variants (e.g., LM5176A) or newer TI parts in the same family. For an exact cross, please share your required input range, output current, topology, packaging, and temperature grade; I can suggest precise substitutes.

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

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