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Analog Devices Inc. LTC3824MPMSE#TRPBF
- Part No.:
- LTC3824MPMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3824MPMSE#TRPBF.pdf
- Description:
- IC REG CTRLR BUCK 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,954
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Product details
Overview
LTC3824MPMSE#TRPBF from Analog Devices (formerly Linear Technology) is a high-voltage, constant-frequency current-mode step-down DC/DC controller designed to drive external P-channel MOSFETs. It operates from 4V to 60V input, delivers up to 2A output in typical 5V/2A buck configurations, features 40µA quiescent current in Burst Mode, and supports programmable switching frequency up to 600kHz - making it suitable for automotive load-dump-tolerant power supplies and industrial 12V/24V distributed systems.
For engineers reviewing the LTC3824MPMSE#TRPBF datasheet, LTC3824MPMSE#TRPBF pinout, LTC3824MPMSE#TRPBF application, or LTC3824MPMSE#TRPBF equivalent, key selection criteria include its –55°C to 150°C extended temperature grade, 10-lead MSE thermally enhanced MSOP package with exposed pad, P-channel gate drive capability (8V clamp, 2.5A peak), and precise 0.788V to 0.816V reference voltage tolerance over full junction temperature range.
Technical Context
The LTC3824MPMSE#TRPBF implements a transconductance error amplifier (gm = 220–370 µmho) controlling a current-mode PWM loop with fixed-frequency operation and selectable Burst Mode. Its VC pin serves as both error amplifier output and current limit control node, with defined thresholds for shutdown (≤25mV), Burst Mode entry (~0.84V), and switch-off (≤0.4V).
It integrates a high-voltage gate driver capable of sourcing/sinking 2.5A peak into 10nF loads, with VCC–VCAP regulated to 6.8–8.9V depending on VCC and grade, and includes foldback protection (50kHz at VFB < 0.5V), programmable soft-start via SS pin (5µA charging current), and synchronization capability across 230–600kHz with 1.3V rising-edge threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 60V - supports automotive battery transients including 60V load dump without external protection. |
| Quiescent Current (Burst Mode) | 40µA typical - enables >1000-hour battery runtime in always-on industrial sensors. |
| Reference Voltage (VREF) | 0.788V to 0.816V over –55°C to 150°C - ensures ±2% output regulation accuracy across full military-grade temp range. |
| Switching Frequency Range | 200kHz to 600kHz (RSET-programmable) - balances EMI control and inductor size for space-constrained automotive modules. |
| Current Limit Threshold | 75mV to 120mV (VCC–VSENSE) - sets precise overcurrent protection independent of VCC variation. |
| Gate Drive Capability | 8V clamp, 2.5A peak source/sink - directly drives high-threshold P-MOSFETs like Si7465DP without level-shifting. |
| Operating Junction Temp | –55°C to 150°C - qualified for under-hood automotive and downhole industrial environments. |
Pinout & Package
The LTC3824MPMSE#TRPBF is housed in a 10-lead plastic MSOP (MSE) package with exposed thermal pad (Pin 11), requiring soldering to PCB ground plane for thermal performance (θJC = 3°C/W). Package dimensions: 3.0mm × 3.0mm × 1.1mm, pitch 0.5mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 11) | Power and signal ground reference | Exposed pad (Pin 11) must be soldered to PCB ground plane to achieve rated θJC = 3°C/W thermal resistance. |
| SYNC/MODE (Pin 2) | Burst Mode enable/disable & sync input | Open or >2V enables Burst Mode; grounded or >20kHz sync pulse disables Burst Mode and forces pulse-skipping. |
| RSET (Pin 3) | Oscillator frequency programming node | Resistor to GND sets switching frequency (e.g., 392kΩ → 200kHz; 200kΩ → 400kHz). |
| VC (Pin 4) | Error amplifier output & PWM control node | 0.7V turn-on threshold; ≤25mV triggers micropower shutdown; ~0.84V initiates Burst Mode sleep cycle. |
| VFB (Pin 5) | Inverting input of voltage error amplifier | Regulates output via resistor divider; <0.5V triggers 50kHz foldback to prevent current runaway during short-circuit. |
| SS (Pin 6) | Soft-start timing capacitor node | 5µA internal current charges external capacitor; ramp time = (C × 0.8V)/5µA - controls inrush current during startup. |
| SENSE (Pin 7) | High-side current sense input | Measures voltage drop across external sense resistor (RS); 100mV threshold sets current limit IOUT(MAX) = 0.1V/RS. |
| VCC (Pin 8) | IC power supply input | Accepts 4V–60V; requires local bypassing; powers internal regulator for gate driver bias (CAP pin). |
| GATE (Pin 9) | P-channel MOSFET gate drive output | Delivers 2.5A peak current; clamped to 8V below VCC when VCC > 9V - eliminates need for external gate clamp. |
| CAP (Pin 10) | Internal regulator bypass capacitor node | Requires ≥0.1µF low-ESR ceramic capacitor to VCC to stabilize gate driver bias voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Extended Temperature Grade | –55°C to 150°C junction operation - fully tested and guaranteed, enabling use in engine control units and industrial motor drives. |
| Burst Mode Efficiency | 40µA quiescent current at light load - extends battery life in remote telemetry nodes without compromising 2A peak capability. |
| High-Voltage P-Channel Gate Drive | 8V regulated clamp, 2.5A peak drive - directly interfaces with industrial-grade P-MOSFETs (e.g., Si7465DP) without external level shifters. |
| Robust Short-Circuit Protection | 50kHz foldback mode triggered by VFB < 0.5V - limits inductor current during output shorts while maintaining control loop stability. |
| Programmable Soft-Start | 5µA precision current source into SS pin - enables controlled ramp-up of output voltage to prevent inrush damage to downstream circuitry. |
Applications
| Automotive Engine Control Unit (ECU) Power Supply | Industrial 24V Distributed Power Rail |
|---|---|
Use Scenario: Regulating 5V/2A from 6V–18V nominal battery with 60V load-dump transients in engine bay. IC Role / Device Role / Timing Role: High-voltage step-down controller driving external P-MOSFET; provides stable 5V rail for microcontrollers and CAN transceivers. Use Value: 60V absolute max input rating and –55°C to 150°C operation ensure reliability during cold cranking and under-hood thermal stress. |
Use Scenario: Generating 12V/2A from 24V factory bus for PLC I/O modules in harsh factory environments. IC Role / Device Role / Timing Role: Constant-frequency current-mode controller with programmable 400kHz switching for compact magnetics and low EMI. Use Value: 40µA Burst Mode quiescent current reduces standby power in always-on industrial controllers without sacrificing transient response. |
| Telecom Remote Radio Head (RRH) Bias Supply | Military Vehicle Power Management |
Use Scenario: Providing 3.3V/1.5A from 48V telecom rectified bus in outdoor base station cabinets. IC Role / Device Role / Timing Role: Synchronizable buck controller operating at 300kHz to avoid sensitive RF bands; uses external P-MOSFET for high-side switching. Use Value: Easy synchronization (1.3V threshold, 10–70% duty sync pulse) enables coherent switching across multiple rails to suppress beat frequencies. |
Use Scenario: Converting 28V aircraft bus to 5V/2A for avionics subsystems requiring MIL-STD-810G environmental compliance. IC Role / Device Role / Timing Role: Military-grade controller with full –55°C to 150°C qualification and 100% duty-cycle capability for low-dropout operation. Use Value: 100% duty cycle operation maintains regulation during brownout conditions where input drops near output voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage step-down controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3891EMSE#TRPBF | Dual-output controller with integrated 5V bias supply; higher 75µA Burst Mode IQ; 4V–60V input; same MSE package. | Supports dual-rail designs (e.g., 5V + 3.3V) without external LDO; better for multi-rail telecom systems. | Select when needing auxiliary bias rail or dual outputs; not drop-in due to different pinout and feature set. |
| LM5116MH/NOPB | 4.5V–100V input; N-channel FET driver; 100µA IQ in skip mode; HTSSOP-20 package; no Burst Mode. | Higher input voltage range suits 48V industrial systems; N-MOS topology lowers conduction loss but requires bootstrap circuit. | Select for >60V inputs or when N-MOS efficiency outweighs complexity; requires layout changes and different gate drive design. |
Compared with LTC3824MPMSE#TRPBF, LTC3891EMSE#TRPBF adds dual-output capability and integrated bias but increases quiescent current and pin count, while LM5116MH/NOPB extends input range to 100V and supports N-MOS but sacrifices Burst Mode efficiency and requires larger package and bootstrap components.
Availability
LTC3824MPMSE#TRPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial 24V distributed power rails, and telecom remote radio head bias supplies requiring stable component supply across extended temperature and high-voltage stress conditions.
Supply support for LTC3824MPMSE#TRPBF 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. Linear pioneered precision DC/DC controllers for demanding industrial and automotive applications.
The LTC3824MPMSE#TRPBF belongs to Linear's high-voltage current-mode buck controller family, designed specifically for robust, wide-input-range power conversion in safety-critical and thermally extreme environments.
FAQ
What is the maximum input voltage rating for the LTC3824MPMSE#TRPBF?
The LTC3824MPMSE#TRPBF has an absolute maximum input voltage rating of 60V on the VIN (SENSE) and VCC pins, with guaranteed operation from 4V to 60V. This makes it suitable for automotive applications subject to load-dump transients, as confirmed in the Absolute Maximum Ratings table and Typical Application circuits showing 60V operation.
Does the LTC3824MPMSE#TRPBF support synchronization with external clock signals?
Yes, the LTC3824MPMSE#TRPBF supports synchronization via the SYNC/MODE pin (Pin 2), with a rising-edge threshold of 1.3V and compatible sync frequency range of 230kHz to 600kHz (depending on RSET value). The datasheet confirms sync pulse duty cycle flexibility (10–70%) and specifies that synchronization is enabled only when VFB > 0.5V.
What is the guaranteed reference voltage (VREF) tolerance over temperature for the LTC3824MPMSE#TRPBF?
The LTC3824MPMSE#TRPBF guarantees a reference voltage (VREF) of 0.788V to 0.816V over its full operating junction temperature range of –55°C to 150°C, as specified in the Electrical Characteristics table under "Reference Voltage (VREF)" for LTC3824MP/LTC3824H grade devices.
How does the LTC3824MPMSE#TRPBF implement short-circuit protection?
The LTC3824MPMSE#TRPBF implements short-circuit protection by monitoring the VFB pin: when VFB drops below 0.5V (indicating severe output overload or short), the controller reduces switching frequency to 50kHz foldback mode to limit inductor current and prevent thermal runaway, as documented in the Applications Information section and Electrical Characteristics table.
What package type and thermal characteristics apply to the LTC3824MPMSE#TRPBF?
The LTC3824MPMSE#TRPBF uses a 10-lead plastic MSOP (MSE) package with exposed thermal pad (Pin 11), specified with θJC = 3°C/W and θJA = 43°C/W. The exposed pad must be soldered to the PCB ground plane to achieve rated thermal performance, per the Pin Configuration diagram and Thermal Characteristics note.
LTC3824MPMSE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4V ~ 60V
- Frequency - Switching:
- 200kHz ~ 600kHz
- Duty Cycle (Max):
- 100%
- Synchronous Rectifier:
- No
- Clock Sync:
- Yes
- Serial Interfaces:
- -
- Control Features:
- Frequency Control, Soft Start
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
LTC3824MPMSE#TRPBF FAQ
1.How can I place an order for LTC3824MPMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3824MPMSE#TRPBF 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 LTC3824MPMSE#TRPBF reliable?
The price and inventory of LTC3824MPMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3824MPMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3824MPMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3824MPMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3824MPMSE#TRPBF?
LTC3824MPMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3824MPMSE#TRPBF 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 LTC3824MPMSE#TRPBF?
For technical support, including LTC3824MPMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3824MPMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3824MPMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3824MPMSE#TRPBF 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 LTC3824MPMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3824MPMSE#TRPBF?
All LTC3824MPMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3824MPMSE#TRPBF, 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 LTC3824MPMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3824MPMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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