My Inquiry
My Account
Analog Devices Inc. LTM8033EV#PBF
- Part No.:
- LTM8033EV#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Converters
- Package:
- 76-BLGA Module
- Datasheet:
-
LTM8033EV#PBF.pdf
- Description:
- DC DC CONVERTER 0.8-24V
- Quantity:
- Payment:
- Shipping:
Inventory:4,306
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTM8033EV#PBF from Analog Devices (formerly Linear Technology) is an ultralow-noise, EMC-compliant 36V input, 3A µModule® buck regulator in LGA package. It delivers regulated output from 0.8V to 24V, operates over 3.6V–36V input, supports 200kHz–2.4MHz switching via RT resistor, and meets EN55022 Class B radiated emissions without external filtering - ideal for automotive battery regulation and industrial distributed power.
For engineers reviewing the LTM8033EV#PBF datasheet, LTM8033EV#PBF pinout, LTM8033EV#PBF application, or LTM8033EV#PBF equivalent, key selection criteria include its integrated EMI filter, programmable soft-start via RUN/SS, current-mode control architecture, PGOOD monitoring, and parallel operation capability via SHARE pin - all within a compact 11.25mm × 15mm × 4.32mm land grid array package.
Technical Context
The LTM8033EV#PBF implements a fixed-frequency current-mode PWM controller with integrated EMI filter, power switches, inductor, and support components. Its ADJ pin is regulated to 790mV (typ), enabling precise output voltage setting via a single external resistor (RADJ = 394.21/(VOUT – 0.79) kΩ).
It features Burst Mode® operation for light-load efficiency, thermal shutdown above 125°C, and synchronization capability via SYNC pin with <1µs edge rate requirement. The BIAS pin accepts 2.8V–25V to power internal circuitry - improving efficiency when tied to VOUT ≥2.8V - while VIN + BIAS must remain below 56V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6V to 36V - supports wide-range industrial and automotive battery inputs including cold-crank and load-dump conditions. |
| Output Current | 3A continuous - sufficient for FPGA core rails, DSP supplies, and multi-rail embedded systems without derating at 25°C. |
| Output Voltage Range | 0.8V to 24V - set by single RADJ resistor; enables direct generation of logic, analog, and interface supply voltages. |
| Switching Frequency | 200kHz to 2.4MHz - adjustable via RT-to-GND resistor; higher frequencies allow smaller external capacitors and faster transient response. |
| EMI Compliance | EN55022 Class B radiated emissions met standalone - eliminates need for external EMI filters in most board-level designs. |
| Package Dimensions | 11.25mm × 15mm × 4.32mm LGA - surface-mount compatible with standard reflow profiles; RoHS-compliant Au finish (e4 MSL3). |
| Thermal Resistance | θJA = 15.4°C/W - measured on 4-layer 6.35cm × 6.35cm PCB; enables 3A operation up to 85°C ambient with proper layout. |
Pinout & Package
Package: 76-lead overmolded Land Grid Array (LGA), 11.25mm × 15mm × 4.32mm, RoHS-compliant Au terminal finish (e4), MSL Level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Bank 1) | Power Output | Main regulated output node; connect bulk output capacitor and load between these pins and GND. |
| GND (A8, Bank 2) | Ground Reference | Local ground plane connection point; return path for feedback divider (RADJ) and EMI filter. |
| FIN (Bank 3) | Filtered Input Node | Post-EMI-filter input; connect recommended CFIN capacitor here to optimize conducted noise suppression. |
| VIN (Bank 4) | Main Input Supply | Primary power input for internal regulator and high-side switch; requires local low-ESR bypass capacitor. |
| SHARE (A6) | Current Share Control | Enables parallel operation of multiple LTM8033EV#PBF units for >3A output; tie together across devices. |
| ADJ (A7) | Feedback Reference | Regulated to 790mV (typ); sets output voltage via external RADJ resistor to ground. |
| RT (B6) | Frequency Programming | Connect resistor to GND to set switching frequency from 200kHz to 2.4MHz per Table 2. |
| SYNC (B8) | External Clock Input | Accepts external clock for synchronization; grounding enables Burst Mode® for light-load efficiency. |
| PGOOD (B7) | Power Good Indicator | Open-collector output active-high when ADJ reaches ≥90% of target; valid only when RUN/SS is high and VIN >3.6V. |
| AUX (G3) | Low-Current VOUT Tap | Internally connected to VOUT; placed adjacent to BIAS for routing convenience - not for load current. |
| BIAS (G4) | Bias Supply Input | Provides power to internal circuitry; connect to VOUT (if ≥2.8V) or external source; VIN + BIAS <56V. |
| RUN/SS (G8) | Enable & Soft-Start | Pull <0.2V to shut down (IIN <1µA); tie ≥2.5V for operation; also controls soft-start timing via external capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated EMI Filter | Meets EN55022 Class B radiated emissions standalone - reduces system-level EMI design effort and board area. |
| Programmable Switching Frequency | 200kHz–2.4MHz via single RT resistor - enables optimization of efficiency, size, and noise for specific input/output conditions. |
| Current-Mode Control | Provides inherent cycle-by-cycle current limiting and fast transient response - improves stability under dynamic load steps. |
| Programmable Soft-Start | Controlled via capacitor on RUN/SS pin - prevents inrush current and output overshoot during power-up. |
| Parallel Operation Support | SHARE pin enables current sharing across multiple LTM8033EV#PBF units - scales output current beyond 3A without external controllers. |
| Burst Mode® Operation | Reduces quiescent current to ~50µA at light loads - extends battery life in portable and always-on applications. |
Applications
| Automotive Battery Regulation | Industrial Distributed Power |
|---|---|
|
Use Scenario: Regulating 12V/24V automotive battery rail (with cold-crank down to 3.6V) to power infotainment SoCs and ADAS sensors. IC Role / Device Role / Timing Role: Primary non-isolated DC/DC step-down regulator delivering stable 1.2V, 3.3V, or 5V outputs with low EMI for safety-critical subsystems. Use Value: Eliminates need for external EMI filters in vehicle ECUs, reducing BOM count and passing OEM EMC requirements out-of-box. |
Use Scenario: Providing isolated 5V/12V rails in PLC backplanes and factory automation I/O modules with wide input range. IC Role / Device Role / Timing Role: Compact, self-contained buck converter replacing discrete controller + MOSFET + inductor solutions in space-constrained enclosures. Use Value: Reduces design time and layout risk - full power stage integration ensures consistent performance across production batches. |
| Portable Medical Equipment | Test & Measurement Instruments |
|
Use Scenario: Powering low-noise analog front-ends and ADCs in handheld ultrasound and patient monitors. IC Role / Device Role / Timing Role: Low-RMS-noise (5mV typ) power source for precision signal chains requiring clean 2.5V or 3.3V supplies. Use Value: Ultralow output ripple and Burst Mode® efficiency enable >12-hour battery runtime without compromising measurement integrity. |
Use Scenario: Generating multiple synchronized supply rails in benchtop oscilloscopes and spectrum analyzers. IC Role / Device Role / Timing Role: Synchronized µModule regulator enabling phase-aligned switching across rails to minimize beat-frequency noise in sensitive analog sections. Use Value: SYNC pin allows clock alignment across multiple LTM8033EV#PBF units - suppressing inter-rail interference critical for sub-mV accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC µModule regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTM8033EY#PBF | BGA package (11.25mm × 15mm × 4.92mm), SAC305 RoHS finish, identical electrical specs. | Requires BGA assembly process; slightly taller but same footprint; preferred for automated high-volume SMT lines with BGA capability. | Select LTM8033EY#PBF if BGA reflow infrastructure is available and board stack height permits 4.92mm profile. |
| LTM8033IV#PBF | Same LGA package as LTM8033EV#PBF but rated for –40°C to 125°C junction temperature (vs. –40°C to 125°C for EV grade). | Guaranteed performance over full industrial temp range; suitable for extended-temperature deployments like outdoor base stations or engine compartments. | Choose LTM8033IV#PBF when full-specification validation across –40°C to 125°C is required - not just assured-by-design. |
Compared with LTM8033EY#PBF and LTM8033IV#PBF, the LTM8033EV#PBF offers the same core regulation performance in a RoHS-compliant LGA package with validated operation from –40°C to 125°C, making it optimal for cost-sensitive industrial designs where BGA handling is impractical and full temperature-grade certification is not mandated.
Availability
LTM8033EV#PBF is available at Aetrix Electronics and suitable for automotive battery regulation, industrial distributed power, and portable medical equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTM8033EV#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 the µModule product line as a leader in integrated power solutions, emphasizing reliability, EMC performance, and time-to-market reduction.
The LTM8033EV#PBF belongs to the µModule regulator family designed for engineers needing complete, verified, and EMC-optimized DC/DC conversion in minimal board space - targeting automotive, industrial, and instrumentation applications.
FAQ
What is the maximum allowable voltage sum between VIN and BIAS for the LTM8033EV#PBF?
The LTM8033EV#PBF specifies that the sum of VIN and BIAS voltages must not exceed 56V. This constraint protects internal bias circuitry and ensures safe operation of the integrated power stage. For example, if VIN is 36V, BIAS must be ≤20V; if BIAS is tied to VOUT = 12V, VIN may go up to 44V. Exceeding 56V risks permanent damage.
How does the LTM8033EV#PBF achieve EN55022 Class B compliance without external filters?
The LTM8033EV#PBF achieves EN55022 Class B radiated emissions compliance through an integrated passive EMI filter located between VIN and FIN pins. This filter, combined with optimized internal layout and shielding in the overmolded LGA package, suppresses high-frequency common-mode noise at the source. Conducted emissions still require external input filtering per application conditions.
Can the LTM8033EV#PBF operate with an output voltage lower than 0.8V?
No - the LTM8033EV#PBF is specified for output voltages from 0.8V to 24V. The ADJ pin is internally regulated to 790mV (typ), and the minimum valid RADJ value corresponds to 0.8V output using the formula RADJ = 394.21/(VOUT – 0.79). Attempting sub-0.8V operation violates the feedback range and results in loss of regulation.
What is the purpose of the FIN pin on the LTM8033EV#PBF, and how should it be used?
The FIN pin on the LTM8033EV#PBF is the filtered input node - the output of the internal EMI filter. It must be decoupled with the recommended CFIN capacitor (e.g., 10µF, 50V X7R) to ground. Leaving FIN unconnected degrades conducted noise performance; adding extra capacitance can further tailor filter response but requires validation against startup and transient behavior.
Does the LTM8033EV#PBF support synchronization to an external clock, and what are the timing requirements?
Yes - the LTM8033EV#PBF supports external clock synchronization via the SYNC pin. Valid clock edges must have rise/fall times faster than 1µs. The pin accepts logic-high ≥0.7V to disable Burst Mode®, or a clean square wave for synchronization. Floating SYNC is prohibited; grounding enables low-ripple Burst Mode® operation at light loads.
LTM8033EV#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Package/Case:
- 76-BLGA Module
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.6V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- 0.8 ~ 24V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 3A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 76-LGA (15x11.25)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
LTM8033EV#PBF FAQ
1.How can I place an order for LTM8033EV#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM8033EV#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 LTM8033EV#PBF reliable?
The price and inventory of LTM8033EV#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM8033EV#PBF is usually 5 days.
3.What payment methods are accepted for LTM8033EV#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM8033EV#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM8033EV#PBF?
LTM8033EV#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM8033EV#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 LTM8033EV#PBF?
For technical support, including LTM8033EV#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM8033EV#PBF requirements.
6.How does Aetrix verify that LTM8033EV#PBF is sourced from the original manufacturer or authorized distributors?
All LTM8033EV#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 LTM8033EV#PBF meets industry standards.
7.What is the process for return or replacement of LTM8033EV#PBF?
All LTM8033EV#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM8033EV#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 LTM8033EV#PBF part is unused and in its original packaging.
Return procedure for LTM8033EV#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTM8033EV#PBF Tags
-
1S4E_0505S1.5U
GAPTEC Electronic
-
TPS631000DRLR
Texas Instruments
-
XCL209F083DR
Torex Semiconductor Ltd
-
SC202AMLTRT
Semtech Corporation
-
NME1S0505SC
Murata Power Solutions Inc.
-
XCL101A501ER-G
Torex Semiconductor Ltd
-
RFM-0505S
Recom Power
-
TEA 1-0505E
Traco Power
-
MIC33153YHJ-TR
Microchip Technology
-
TEA 1-0505
Traco Power
-
TPSM863252RDXR
Texas Instruments
-
RFB-0505S
Recom Power
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
