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Analog Devices Inc. LT1336IS#PBF
- Part No.:
- LT1336IS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1336IS#PBF.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,307
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Product details
Overview
LT1336IS#PBF from Analog Devices (formerly Linear Technology) is a half-bridge N-channel power MOSFET driver with integrated boost regulator for high-side gate drive. It supports floating top-side operation up to 60V HV rail, delivers 1.5A peak output current, achieves 180ns transition times into 10,000pF load, and maintains gate drive at 100% duty cycle via adaptive bootstrap regulation. It is used in synchronous step-down regulators and 3-phase brushless motor control.
For engineers reviewing the LT1336IS#PBF datasheet, LT1336IS#PBF pinout, LT1336IS#PBF application, or LT1336IS#PBF equivalent, key selection criteria include its −40°C to +85°C industrial temperature range, 16-lead SO package, adaptive nonoverlapping gate drive logic, undervoltage lockout with 0.5V hysteresis, and dual independent TTL/CMOS-compatible inputs with shoot-through protection.
Technical Context
The LT1336IS#PBF implements two independent noninverting gate drivers - one floating (top) and one grounded (bottom) - each with dedicated Gate Drive (TGATEDR/BGATEDR) and Gate Feedback (TGATEFB/BGATEFB) pins to monitor VGS and enforce sequential turn-off-before-turn-on. Its internal switching regulator operates in hysteretic current mode at ~700kHz to recharge the bootstrap capacitor during high-duty-cycle PWM, eliminating reliance on bootstrapping alone.
Undervoltage protection is dual-stage: V+ UVLO (8.3V shutdown / 9.2V start-up) disables both channels, while VBOOST–VTSOURCE UVLO (8.7V shutdown / 9.3V start-up) independently disables the top driver. Input logic thresholds are regulated at 0.8V (low) and 1.7V (high) with 300mV hysteresis, supporting direct TTL/CMOS interfacing without level shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 10V to 15V - defines minimum operating voltage for reliable UVLO margin and maximum for internal bias stability. |
| Top Source Voltage Range | −5V to 60V - enables direct connection to high-voltage half-bridge nodes up to absolute max rating. |
| Peak Output Current | 1.5A (<10µs) - sustains fast gate charging for MOSFETs with >10nC Qg at high switching frequencies. |
| Gate Rise/Fall Time | 90–200ns (bottom), 130–200ns (top) into 10,000pF - determines achievable PWM frequency before transition losses dominate. |
| ISENSE Threshold | 480mV typical - sets peak inductor current limit in boost regulator; fixed hysteresis of 55mV prevents oscillation. |
| VBOOST Regulation | 10.6V typical (VBOOST–VTSOURCE) - provides stable gate overdrive for top N-MOSFETs independent of bootstrap diode drop. |
| UVLO Hysteresis | 0.5V - ensures clean, bounce-free enable/disable behavior under noisy or slowly ramping supply conditions. |
Pinout & Package
LT1336IS#PBF is housed in a 16-lead plastic SO (S package) with θJA = 110°C/W, rated for −40°C to +85°C industrial operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INTOP (3) | Top driver input | TTL/CMOS-compatible control signal; disabled when INBOTTOM is high to prevent shoot-through. |
| INBOTTOM (4) | Bottom driver input | TTL/CMOS-compatible control signal; disabled when INTOP is high for interlocked operation. |
| TGATEDR (13) | Top gate drive output | High-current source/sink node for top N-MOSFET gate; connects via optional series resistor to gate. |
| TGATEFB (12) | Top gate feedback | Direct connection to top MOSFET gate; inhibits bottom driver until VGS < 2.9V for safe commutation. |
| TSOURCE (11) | Top driver return | Reference node for floating top driver; connects to top MOSFET source and bootstrap capacitor low side. |
| BOOST (14) | Top driver supply | Regulated high-side supply node; connects to bootstrap capacitor high side and powers top driver stage. |
| BGATEDR (9) | Bottom gate drive output | Ground-referenced high-current driver for bottom N-MOSFET gate. |
| BGATEFB (8) | Bottom gate feedback | Direct gate monitoring node; inhibits top driver until VGS < 2.5V to prevent cross-conduction. |
| ISENSE (1) | Boost regulator current sense | Input to internal comparator setting peak inductor current; open if boost not used. |
| SWITCH (16) | Boost regulator switch | Internal NPN collector node driving external inductor/diode network; open if boost not used. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive nonoverlapping gate drive | Hardware-enforced dead time via gate feedback monitoring eliminates need for external timing components or matched MOSFETs. |
| Integrated boost regulator | Self-contained 700kHz hysteretic switching regulator sustains top-gate drive beyond 90% duty cycle without external controller. |
| Dual independent UVLO | Separate V+ and VBOOST–VTSOURCE detection blocks ensure robust startup and fault recovery in high-noise industrial environments. |
| TTL/CMOS input compatibility | Inputs tolerate V+ and feature regulated 0.8V/1.7V thresholds with 300mV hysteresis - no external level shifters required. |
| 1.5A peak gate drive | Supports parallel driving of multiple high-Qg MOSFETs (up to five) while maintaining sub-200ns transitions into 10,000pF. |
Applications
| Motor Control | Synchronous Buck Regulator |
|---|---|
|
Use Scenario: Driving high-current 3-phase BLDC motors in HVAC blowers and industrial pumps. IC Role / Device Role / Timing Role: Half-bridge gate driver providing isolated top/bottom N-MOSFET control with adaptive shoot-through prevention. Use Value: Enables efficient 95–100% duty cycle operation using internal boost regulation, reducing external component count vs. discrete bootstrap solutions. |
Use Scenario: High-efficiency DC-DC conversion in telecom power supplies and server VRMs. IC Role / Device Role / Timing Role: Synchronous rectifier driver delivering precise, nonoverlapping gate signals to high-side and low-side MOSFETs. Use Value: 180ns transition times into 10,000pF minimize conduction loss and support >500kHz switching without excessive gate drive loss. |
| Class D Audio Amplifier | Industrial Inverter Stage |
|
Use Scenario: Full-bridge output stage in high-fidelity audio amplifiers requiring low THD+N and wide bandwidth. IC Role / Device Role / Timing Role: Dual-channel gate driver with matched propagation delays ensuring symmetrical PWM edge alignment. Use Value: 0.5V UVLO hysteresis prevents erratic switching during brown-out conditions common in battery-backed audio systems. |
Use Scenario: Medium-voltage AC motor drives operating from 40–60V DC bus in factory automation equipment. IC Role / Device Role / Timing Role: Robust half-bridge driver with 60V top-source capability and thermal-safe industrial temperature rating. Use Value: −40°C to +85°C operating range and 125°C junction limit ensure reliability in uncooled enclosures exposed to ambient temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRS21844SPbF | Higher VBS rating (600V), no integrated boost regulator; requires external bootstrap diode/capacitor. | Targeted at higher-voltage AC inverters (>200V); lacks 100% duty cycle support without external circuitry. | Select IRS21844SPbF only when HV rail exceeds 60V and external bootstrap design is acceptable. |
| LM5109BMAX/NOPB | Fixed 12V gate drive, no ISENSE-based current limiting, no VBOOST UVLO; simpler architecture. | Optimized for cost-sensitive buck converters below 48V; lacks adaptive shoot-through protection and boost regulation. | Choose LM5109BMAX/NOPB for basic 12V synchronous buck designs where 100% duty cycle is not required. |
Compared with IRS21844SPbF and LM5109BMAX/NOPB, the LT1336IS#PBF uniquely integrates a 700kHz boost regulator and adaptive gate feedback logic - enabling true 100% duty cycle operation and eliminating MOSFET matching constraints in industrial motor and power supply designs.
Availability
LT1336IS#PBF is available at Aetrix Electronics and suitable for synchronous buck regulators, 3-phase BLDC motor drives, Class D audio amplifiers, and industrial inverter stages requiring stable component supply across extended temperature ranges.
Supply support for LT1336IS#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 acquired Linear Technology in 2017 and maintains full product support, documentation, and manufacturing continuity for legacy Linear parts including the LT1336 series.
The LT1336 product line was designed specifically for high-reliability half-bridge gate driving in industrial motor control and switching power supplies where 100% duty cycle capability and shoot-through immunity are critical.
FAQ
What is the maximum high-side voltage the LT1336IS#PBF can drive?
The LT1336IS#PBF supports a top-source voltage range of −5V to 60V, with an absolute maximum rating of 60V on the TSOURCE pin. This allows direct interface to 48V industrial bus systems and 60V-rated MOSFETs without level-shifting circuitry. Operation above 40V requires flyback topology for the internal boost regulator per the datasheet Applications Information section.
Does the LT1336IS#PBF require external bootstrap components?
The LT1336IS#PBF includes an integrated switching regulator that eliminates dependence on traditional bootstrap diodes and capacitors for 100% duty cycle operation. However, a bootstrap capacitor (≥1µF) and external inductor/diode network are still required when using the boost topology - Pins 1, 15, and 16 must be connected per Figure 1 in the datasheet for full functionality.
How does the LT1336IS#PBF prevent shoot-through in half-bridge configurations?
The LT1336IS#PBF prevents shoot-through using hardware-based adaptive nonoverlapping drive: it monitors TGATEFB and BGATEFB voltages in real time and enforces strict turn-off-before-turn-on sequencing. If either gate voltage remains above its threshold (2.9V top / 2.5V bottom), the opposing driver is held inactive - no external timing resistors or matched MOSFETs are needed.
What is the purpose of the ISENSE pin on the LT1336IS#PBF?
The ISENSE pin (Pin 1) serves as the current-sense input for the internal boost regulator's hysteretic current-mode controller. A 2Ω resistor between ISENSE and SV+ sets the peak inductor current limit (~480mV threshold). Leaving ISENSE open disables the boost regulator, reverting to basic bootstrap operation - but limits duty cycle to <90%.
Can the LT1336IS#PBF drive multiple MOSFETs in parallel?
Yes - the LT1336IS#PBF top and bottom drivers can each drive up to five N-channel MOSFETs in parallel. Gate decoupling resistors (10–47Ω) are recommended per MOSFET to suppress high-frequency oscillation. Performance data shows <200ns rise/fall times are maintained into 10,000pF total gate capacitance, confirming multi-MOSFET capability.
LT1336IS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 16-SO
LT1336IS#PBF FAQ
1.How can I place an order for LT1336IS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1336IS#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 LT1336IS#PBF reliable?
The price and inventory of LT1336IS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1336IS#PBF is usually 5 days.
3.What payment methods are accepted for LT1336IS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1336IS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1336IS#PBF?
LT1336IS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1336IS#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 LT1336IS#PBF?
For technical support, including LT1336IS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1336IS#PBF requirements.
6.How does Aetrix verify that LT1336IS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1336IS#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 LT1336IS#PBF meets industry standards.
7.What is the process for return or replacement of LT1336IS#PBF?
All LT1336IS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1336IS#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 LT1336IS#PBF part is unused and in its original packaging.
Return procedure for LT1336IS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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