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Analog Devices Inc. LT1160IN#PBF
- Part No.:
- LT1160IN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1160IN#PBF.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:121
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Product details
Overview
LT1160IN#PBF from Analog Devices (formerly Linear Technology) is a half-bridge N-channel power MOSFET driver IC with floating high-side gate drive capability up to 60V HV rail, adaptive nonoverlapping control, 180ns transition times into 10,000pF, TTL/CMOS-compatible inputs, and undervoltage lockout with hysteresis-designed for synchronous buck regulators and motor control.
For engineers reviewing the LT1160IN#PBF datasheet, LT1160IN#PBF pinout, LT1160IN#PBF application, or LT1160IN#PBF equivalent, key selection criteria include top-source voltage range (–5V to 60V), boost-to-source UVLO thresholds (8.2V–9.8V), gate drive rise/fall times under load, thermal resistance (θJA = 70°C/W), and industrial temperature rating (–40°C to 85°C).
Technical Context
The LT1160IN#PBF integrates two independent noninverting gate drivers-one low-side (PV+/PGND referenced) and one high-side (floating, bootstrap-supplied via BOOST/T SOURCE)-with adaptive dead-time control that monitors gate feedback pins (T GATE FB, B GATE FB) to prevent shoot-through by enforcing sequential turn-off-before-turn-on sequencing.
Its dual UVLO circuit independently monitors V+ (start-up 8.9V, shutdown 8.3V) and VBOOST–VT SOURCE (start-up 9.3V, shutdown 8.7V), while TTL/CMOS input logic (VIL ≤ 0.8V, VIH ≥ 1.7V) enables direct microcontroller interface without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 10V to 15V operating; absolute max 20V - defines compatible bias supply rails and decoupling requirements |
| Top Source Voltage Range | –5V to 60V - supports high-side operation across wide HV bus ranges including transient undershoot |
| Boost Voltage Max | 75V - sets maximum bootstrap capacitor voltage rating and layout creepage constraints |
| Gate Rise/Fall Time | 90–200ns (bottom), 130–200ns (top) into 3000pF - determines minimum practical switching frequency and EMI profile |
| Undervoltage Lockout Hysteresis | 0.5V (V+) and 0.5V (VBOOST–VT SOURCE) - ensures robust startup/shutdown behavior during brownout or slow-ramp supplies |
| Operating Temperature | –40°C to +85°C - qualifies for industrial motor drives and power supplies without derating |
| Thermal Resistance θJA | 70°C/W (N package) - used to calculate junction temperature rise under given power dissipation and PCB copper area |
Pinout & Package
LT1160IN#PBF uses a 14-lead PDIP (N package) with through-hole mounting and 0.300-inch body width. Pin 1 is SV+, pin 5 is SGND, pin 6 is PGND, pin 11 is T SOURCE, and pin 14 is BOOST - all critical for bootstrap topology layout and ground separation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SV+ (Pin 1) | Main signal supply input | Must be decoupled to SGND (Pin 5) with ≥10µF low-ESR capacitor; powers internal logic and level shifters |
| IN TOP (Pin 2) | High-side driver enable input | TTL/CMOS-compatible; disabled when IN BOTTOM is high - enforces hardware interlock |
| IN BOTTOM (Pin 3) | Low-side driver enable input | TTL/CMOS-compatible; disabled when IN TOP is high - prevents simultaneous conduction |
| UV OUT (Pin 4) | Open-collector undervoltage flag | Sinks current when V+ or VBOOST–VT SOURCE falls below threshold - used for system fault signaling |
| SGND (Pin 5) | Small-signal ground reference | Must be routed separately from PGND to minimize noise coupling into logic and UVLO comparators |
| PGND (Pin 6) | Power ground return | Connects directly to source of bottom MOSFET - carries high di/dt switching currents |
| B GATE FB (Pin 8) | Bottom gate voltage monitor | Direct connection to MOSFET gate; inhibits top driver until voltage drops below 2.5V - ensures safe commutation |
| B GATE DR (Pin 9) | Bottom gate drive output | High-current source/sink node (1.5A peak); series gate resistor required for damping and EMI control |
| PV+ (Pin 10) | Bottom driver supply | Connected to same rail as SV+; powers low-side driver stage and feedback comparator |
| T SOURCE (Pin 11) | Floating high-side return | Connects to top MOSFET source and low side of bootstrap capacitor - defines local ground for high-side driver |
| T GATE FB (Pin 12) | Top gate voltage monitor | Direct connection to top MOSFET gate; inhibits bottom driver until VG–VS drops below 2.9V - prevents shoot-through |
| T GATE DR (Pin 13) | Top gate drive output | High-current source/sink node (1.5A peak); requires gate resistor between pin and MOSFET gate |
| BOOST (Pin 14) | Bootstrap capacitor high-side connection | Connects to high side of bootstrap cap; replenished each time top source swings low - sustains high-side bias |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive nonoverlapping gate drive | Eliminates external timing components and MOSFET matching requirements by monitoring actual gate voltage before enabling opposite switch |
| Floating top driver (60V max) | Enables direct driving of N-channel high-side switches in buck, half-bridge, and Class D amplifier topologies without P-channel or isolated bias |
| Dual independent UVLO circuits | Prevents partial turn-on during brownout by separately monitoring main supply (V+) and bootstrap supply (VBOOST–VT SOURCE) |
| TTL/CMOS input compatibility | Accepts 0.8V/1.7V logic thresholds with 3kΩ input resistors and 5V clamps - simplifies interface with MCUs and PWM controllers |
| Separate SGND and PGND pins | Reduces noise coupling between sensitive analog comparators and high-di/dt power paths - improves reliability in noisy industrial environments |
Applications
| Motor Control | Synchronous Buck Regulator |
|---|---|
Use Scenario: Bidirectional DC motor drive using half-bridge topology with single-direction rotation and plugging brake capability. IC Role / Device Role / Timing Role: LT1160IN#PBF provides isolated high-side and referenced low-side gate drive with adaptive dead-time control to prevent shoot-through during direction reversal. Use Value: Enables fast, reliable braking without external logic or timing circuits; supports PWM speed control up to 100kHz with <200ns propagation delays. | Use Scenario: High-efficiency 40V-to-5V, 10A step-down converter replacing Schottky diode with synchronous N-MOSFET rectification. IC Role / Device Role / Timing Role: LT1160IN#PBF drives top switch (HV-side) and bottom switch (ground-side) with precise nonoverlapping timing to minimize conduction and switching losses. Use Value: Achieves >90% efficiency at full load by eliminating diode forward drop; eliminates discontinuous conduction mode at light loads. |
| Class D Audio Amplifier | Three-Phase Brushless Motor Drive |
Use Scenario: 200W, 10Hz–1kHz audio amplifier using complementary half-bridge output stage with carrier frequency of 100kHz. IC Role / Device Role / Timing Role: LT1160IN#PBF delivers fast, matched gate transitions to reduce crossover distortion and thermal stress on output MOSFETs. Use Value: Supports clean square-wave drive with <200ns rise/fall times into 10nF gate loads - critical for low THD+N performance. | Use Scenario: Sensorless BLDC motor controller where three half-bridges are driven by three LT1160IN#PBFs (one per phase leg). IC Role / Device Role / Timing Role: LT1160IN#PBF serves as dedicated gate driver for each high/low pair, enforcing commutation sequence via external MCU-generated six-step PWM. Use Value: Industrial-grade temperature range (–40°C to +85°C) and robust UVLO ensure reliable operation in fan-cooled motor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRS21844PbF | Higher VBS rating (600V), integrated bootstrap diode, no gate feedback pins - relies on fixed dead time | Targeted at higher-voltage AC-DC and inverter applications; lacks adaptive shoot-through protection | Choose IRS21844PbF only if HV > 60V or integrated bootstrap diode reduces BOM count; not drop-in due to different pinout and control architecture |
| LM5109BMAX/NOPB | Single-supply operation (8V–100V), no separate SGND/PGND, 100ns typical rise time, no gate feedback monitoring | Optimized for high-frequency buck converters with simpler layout; lacks industrial temp grade and adaptive protection | LM5109BMAX/NOPB suits cost-sensitive, high-volume DC-DC designs where shoot-through risk is mitigated by controller-level timing; LT1160IN#PBF preferred for robustness in motor control |
Compared with IRS21844PbF and LM5109BMAX/NOPB, the LT1160IN#PBF uniquely combines adaptive gate feedback-based dead-time control, industrial temperature range, and separate signal/power grounds - making it superior for noise-immune motor drive and synchronous regulator designs where shoot-through prevention is critical.
Availability
LT1160IN#PBF is available at Aetrix Electronics and suitable for synchronous buck regulators, half-bridge motor control, and Class D audio amplifiers requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceable sourcing.
Supply support for LT1160IN#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. (ADI) is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The LT1160IN#PBF belongs to ADI's legacy Linear Technology power management portfolio, designed specifically for robust, high-reliability gate driving in industrial motor control and switching power supply applications.
FAQ
What is the maximum high-voltage rail voltage supported by the LT1160IN#PBF?
The LT1160IN#PBF supports a maximum top source voltage of 60V, meaning it can drive the high-side N-channel MOSFET in configurations where the HV rail reaches up to 60V. This is specified in the Absolute Maximum Ratings table and confirmed in the Applications Information section. Exceeding this voltage risks permanent damage to the T SOURCE, T GATE FB, and BOOST pins.
Does the LT1160IN#PBF require external bootstrap diodes or capacitors?
Yes, the LT1160IN#PBF requires an external bootstrap capacitor (typically 1µF ceramic or low-ESR electrolytic) connected between BOOST and T SOURCE, and does not integrate a bootstrap diode. The datasheet recommends a 1N4148 or equivalent fast-switching diode in series with the bootstrap charging path to prevent reverse discharge - a critical design requirement for reliable high-side operation.
How does the adaptive nonoverlapping feature of the LT1160IN#PBF prevent shoot-through?
The LT1160IN#PBF prevents shoot-through by monitoring actual gate voltages via dedicated feedback pins: T GATE FB and B GATE FB. Before enabling the opposite driver, it waits until the active MOSFET's gate-to-source voltage falls below 2.9V (top) or 2.5V (bottom). This hardware-enforced sequence eliminates reliance on fixed dead-time settings and tolerates MOSFET parameter variation - a core differentiator of the LT1160IN#PBF.
What is the thermal resistance (θJA) of the LT1160IN#PBF in its N-package configuration?
The LT1160IN#PBF in the 14-lead PDIP (N) package has a junction-to-ambient thermal resistance (θJA) of 70°C/W, as specified in the Electrical Characteristics table footnote. This value assumes standard JEDEC 2S2P test board conditions and is used to calculate junction temperature rise under real-world power dissipation - essential for thermal design validation in industrial applications.
Can the LT1160IN#PBF drive multiple parallel MOSFETs per channel?
Yes, the LT1160IN#PBF can drive up to five parallel N-channel MOSFETs per channel (top or bottom), as verified in the Typical Performance Characteristics and Applications Information sections. Gate decoupling resistors (10Ω–47Ω) are recommended per MOSFET to suppress high-frequency oscillation, and total gate charge loading must remain within the driver's current capability to maintain specified transition times and avoid thermal overload.
LT1160IN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 10V ~ 15V
- Logic Voltage - VIL, VIH:
- 0.8V, 2V
- Current - Peak Output (Source, Sink):
- 1.5A, 1.5A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 60 V
- Rise / Fall Time (Typ):
- 130ns, 60ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
LT1160IN#PBF FAQ
1.How can I place an order for LT1160IN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1160IN#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT1160IN#PBF reliable?
The price and inventory of LT1160IN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1160IN#PBF is usually 5 days.
3.What payment methods are accepted for LT1160IN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1160IN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1160IN#PBF?
LT1160IN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1160IN#PBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT1160IN#PBF?
For technical support, including LT1160IN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1160IN#PBF requirements.
6.How does Aetrix verify that LT1160IN#PBF is sourced from the original manufacturer or authorized distributors?
All LT1160IN#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT1160IN#PBF meets industry standards.
7.What is the process for return or replacement of LT1160IN#PBF?
All LT1160IN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1160IN#PBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT1160IN#PBF part is unused and in its original packaging.
Return procedure for LT1160IN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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