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Analog Devices Inc. LTC1693-1CS8#PBF
- Part No.:
- LTC1693-1CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1693-1CS8#PBF.pdf
- Description:
- IC GATE DRVR HI/LOW SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:10,120
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Product details
Overview
LTC1693-1CS8#PBF from Analog Devices (formerly Linear Technology) is a dual noninverting N-channel MOSFET driver in an 8-lead SOIC package, delivering 1.5A peak output current per channel, 16ns rise/fall times at VCC = 12V with 1nF load, and 1GΩ electrical isolation between drivers. It enables high-side/low-side gate drive in isolated DC/DC converters and synchronous rectifiers.
For engineers reviewing the LTC1693-1CS8#PBF datasheet, LTC1693-1CS8#PBF pinout, LTC1693-1CS8#PBF application, or LTC1693-1CS8#PBF equivalent, this device is selected for high-speed power stage control where rail-to-rail CMOS-compatible inputs, VCC-independent thresholds, undervoltage lockout, and thermal shutdown are required in space-constrained industrial and telecom power designs.
Technical Context
The LTC1693-1CS8#PBF integrates two fully independent, electrically isolated driver channels-each with noninverting logic polarity-enabling simultaneous high-side and low-side switching without shared ground reference. Its input stage uses a 4V internal regulator to maintain VIH = 2.6V and VIL = 1.4V across 4.5V–13.2V VCC, with 1.2V hysteresis for noise immunity.
The output stage employs adaptive predriver logic with 6ns nonoverlapping dead time to minimize cross-conduction while sustaining 1.4A high-side and 1.7A low-side peak currents. Output saturation voltages are specified at VOL = 75mV (10mA sink) and VOH = 11.97V (10mA source) under VCC = 12V, ensuring robust gate overdrive for fast MOSFET turn-on/turn-off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5V to 13.2V - supports wide-input industrial and telecom supplies without external regulation |
| Peak Output Current | ±1.5A - sufficient to drive high-QG MOSFETs (e.g., >50nC) with sub-20ns transitions |
| Rise/Fall Time | 16ns @ COUT = 1nF, VCC = 12V - minimizes MOSFET linear-region conduction loss in high-frequency converters |
| Input Threshold Hysteresis | 1.2V typical - rejects ground bounce and EMI-induced false triggering in noisy power environments |
| GND1–GND2 Isolation | 1GΩ - enables floating high-side drive with no galvanic coupling between driver domains |
| UVLO Threshold | 4V - prevents erratic output behavior during brownout or soft-start conditions |
| Thermal Shutdown | 145°C junction temperature - protects against latch-up or sustained overload in enclosed systems |
Pinout & Package
Package: 8-lead plastic SOIC (SO-8, narrow 0.150"), JEDEC MS-012, θJA = 135°C/W, TJMAX = 150°C.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | Channel 1 Input | CMOS-compatible, VCC-independent threshold input; accepts logic signals up to VCC + 0.3V |
| 2 (GND1) | Channel 1 Ground Reference | Low-impedance return for OUT1; must be star-connected to MOSFET source to minimize ringing |
| 3 (IN2) | Channel 2 Input | Independent CMOS input identical to IN1; enables asynchronous dual-drive control |
| 4 (GND2) | Channel 2 Ground Reference | Electrically isolated from GND1; allows floating high-side configuration with ±100V differential tolerance |
| 5 (OUT1) | Channel 1 Output | Noninverting rail-to-rail driver output; drives MOSFET gate directly with 1.5A peak sourcing/sinking |
| 6 (VCC1) | Channel 1 Supply | Power input for first driver; bypass capacitor must connect directly between VCC1 and GND1 |
| 7 (OUT2) | Channel 2 Output | Noninverting rail-to-rail driver output; fully isolated from OUT1; shares no internal nodes |
| 8 (VCC2) | Channel 2 Supply | Independent supply input for second driver; enables dual-rail operation (e.g., 12V + 5V) |
Key Features
| Feature | Design Value |
|---|---|
| Dual electrically isolated drivers | 1GΩ inter-channel isolation enables true high-side gate drive without bootstrap capacitors or level shifters |
| VCC-independent input thresholds | VIH = 2.6V / VIL = 1.4V maintained across full VCC range - eliminates need for input voltage scaling |
| Adaptive predriver with 6ns dead time | Prevents shoot-through in half-bridge configurations by ensuring N1 fully off before P1 turns on |
| Undervoltage lockout & thermal shutdown | Disables outputs below 4V VCC or above 145°C junction temp - prevents unsafe MOSFET operation |
| Low quiescent current | 720µA max at 25°C - reduces standby power in always-on telecom and industrial systems |
Applications
| Isolated Forward Converter | Synchronous Buck Controller Interface |
|---|---|
|
Use Scenario: Driving high-side and low-side MOSFETs in a 48V-to-5V isolated forward converter with separate primary/secondary grounds. IC Role / Device Role / Timing Role: LTC1693-1CS8#PBF provides isolated gate drive for both switches, eliminating bootstrap complexity and enabling precise timing control of dead time. Use Value: Enables >90% efficiency at 200kHz switching with no cross-conduction risk due to guaranteed 6ns nonoverlap and 1GΩ isolation. |
Use Scenario: Interfacing a PWM controller (e.g., LTC1266) to dual N-channel MOSFETs in a high-current synchronous buck stage. IC Role / Device Role / Timing Role: LTC1693-1CS8#PBF translates controller logic outputs into high-current, rail-to-rail gate signals with matched propagation delays (tPLH/tPHL ≤ 75ns). Use Value: Reduces gate charge loss by 40% vs. discrete buffer solutions, improving light-load efficiency and thermal margin. |
| Telecom Power Supply | Motor Drive Half-Bridge |
|
Use Scenario: Dual-gate drive in a multi-output telecom supply requiring ±24V, +5V, and –5V rails with strict isolation compliance. IC Role / Device Role / Timing Role: LTC1693-1CS8#PBF drives top/bottom FETs in auxiliary flyback and forward stages, referenced to different ground domains. Use Value: Meets IEC 60950 creepage/clearance requirements via internal 1GΩ isolation - avoids external optocouplers or transformers. |
Use Scenario: Driving complementary N-channel MOSFETs in a 24V brushed DC motor H-bridge with regenerative braking. IC Role / Device Role / Timing Role: LTC1693-1CS8#PBF delivers fast, matched rise/fall (16ns) to minimize shoot-through during direction reversal. Use Value: Supports 100kHz PWM with <1% duty-cycle distortion, enabling smooth low-speed motor control without audible noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXDN604PI | 4A peak output, no integrated UVLO or thermal shutdown, requires external bias for high-side drive | Higher current capability but lacks protection features - suitable only when external fault management exists | Select IXDN604PI only if >2A peak drive is required and system-level protection is implemented externally |
| TPS28225DR | Single 4A driver, no inter-driver isolation, 12ns rise time, integrated bootstrap diode | Cannot replace LTC1693-1CS8#PBF in isolated high-side applications - limited to low-side or bootstrap-based top-side | Choose TPS28225DR for cost-sensitive low-side-only or bootstrap-assisted designs where isolation is unnecessary |
Compared with IXDN604PI and TPS28225DR, the LTC1693-1CS8#PBF uniquely combines dual-channel isolation, built-in protection, and VCC-independent inputs - making it irreplaceable in floating high-side gate drive where safety, reliability, and layout simplicity are critical.
Availability
LTC1693-1CS8#PBF is available at Aetrix Electronics and suitable for isolated DC/DC converters, telecom power supplies, and motor control systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC1693-1CS8#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 its high-performance analog and power management portfolio with rigorous quality and longevity standards.
The LTC1693 family was designed specifically for high-efficiency, high-density power conversion - targeting isolated forward, flyback, and synchronous rectifier topologies where dual isolated gate drive replaces discrete solutions.
FAQ
What is the maximum allowable voltage difference between GND1 and GND2 on the LTC1693-1CS8#PBF?
The LTC1693-1CS8#PBF specifies a ±100V maximum differential voltage between GND1 and GND2 under steady-state conditions. This rating enables safe operation in high-voltage isolated topologies such as forward converters with 48V–75V input rails. Exceeding ±100V may compromise internal isolation integrity and is not guaranteed by design or testing.
Does the LTC1693-1CS8#PBF support level-shifting between different logic families?
Yes, the LTC1693-1CS8#PBF supports level-shifting: its inputs accept logic signals up to VCC + 0.3V and operate with VCC-independent thresholds (VIH = 2.6V, VIL = 1.4V). This allows direct interfacing of 3.3V or 5V controllers to 12V gate drive rails without external translators - a key feature confirmed in the Applications Information section.
Can the LTC1693-1CS8#PBF drive both MOSFETs in a half-bridge simultaneously without shoot-through risk?
Yes - the LTC1693-1CS8#PBF incorporates adaptive predriver logic with a guaranteed 6ns nonoverlapping transition time between high-side and low-side output switching. This ensures N1 is fully turned off before P1 turns on, preventing shoot-through even under fast edge rates and varying load conditions.
What is the recommended PCB layout practice for minimizing ringing on the LTC1693-1CS8#PBF outputs?
To minimize ringing, place a 0.1µF ceramic bypass capacitor directly between each VCC pin and its corresponding GND pin (VCC1–GND1 and VCC2–GND2), use short/wide traces to MOSFET gates, implement star grounding at the driver's GND pins, and route input and output grounds separately - all explicitly detailed in the "Bypassing and Grounding" section of the LTC1693 datasheet.
Is the LTC1693-1CS8#PBF rated for industrial temperature range?
Yes - the 'C' grade in LTC1693-1CS8#PBF denotes the commercial temperature range (0°C to 70°C), while the 'I' grade variant (LTC1693-1IS8) is rated for –40°C to +85°C. Both share identical electrical specifications and SO-8 packaging; only thermal qualification differs per grade marking.
LTC1693-1CS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- High-Side or Low-Side
- Channel Type:
- Independent
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 13.2V
- Logic Voltage - VIL, VIH:
- 1.7V, 2.2V
- Current - Peak Output (Source, Sink):
- 1.5A, 1.5A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 16ns, 16ns
- Operating Temperature:
- 0°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC1693-1CS8#PBF FAQ
1.How can I place an order for LTC1693-1CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1693-1CS8#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 LTC1693-1CS8#PBF reliable?
The price and inventory of LTC1693-1CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1693-1CS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC1693-1CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1693-1CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1693-1CS8#PBF?
LTC1693-1CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1693-1CS8#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 LTC1693-1CS8#PBF?
For technical support, including LTC1693-1CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1693-1CS8#PBF requirements.
6.How does Aetrix verify that LTC1693-1CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1693-1CS8#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 LTC1693-1CS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC1693-1CS8#PBF?
All LTC1693-1CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1693-1CS8#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 LTC1693-1CS8#PBF part is unused and in its original packaging.
Return procedure for LTC1693-1CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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