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Analog Devices Inc. LTM8052AMPY#PBF
- Part No.:
- LTM8052AMPY#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Converters
- Package:
- 81-BBGA Module
- Datasheet:
-
LTM8052AMPY#PBF.pdf
- Description:
- DC DC CONVERTER 1.2-24V
- Quantity:
- Payment:
- Shipping:
Inventory:2,855
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Product details
Overview
LTM8052AMPY#PBF from Analog Devices (formerly Linear Technology) is a 36V input, ±5A, 2-quadrant constant-voltage/constant-current µModule regulator in a RoHS-compliant BGA package (11.25mm × 15mm × 3.42mm). It sources and sinks output current to maintain regulation across 1.2V–24V outputs, supports programmable current limiting via CTL_I/CTL_T pins, and operates over –55°C to 125°C junction temperature.
For engineers reviewing the LTM8052AMPY#PBF datasheet, LTM8052AMPY#PBF pinout, LTM8052AMPY#PBF application, or LTM8052AMPY#PBF equivalent, key selection considerations include its 2-quadrant CVCC operation, ±5A bidirectional current capability, 6V–36V input range, thermal shutdown protection, and compatibility with Peltier drivers, battery testers, and cell-balancing circuits.
Technical Context
The LTM8052AMPY#PBF implements fixed-frequency average current-mode control with internal power switches, inductor, and compensation - enabling precise regulation of both output voltage and bidirectional current. Its dual analog control inputs (CTL_I and CTL_T) allow independent setting of positive/negative current limits, with the lower voltage determining final regulation.
It operates in forced continuous conduction mode (no pulse-skipping), supports external frequency synchronization via SYNC pin, and features programmable soft-start via SS pin with 11µA charging current. Overvoltage protection is disabled in the LTM8052A variant, distinguishing it from the LTM8052 for applications requiring sustained operation above target regulation voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6V to 36V - supports wide industrial and automotive supply rails without pre-regulation. |
| Output Voltage Range | 1.2V to 24V - set by single resistor from ADJ pin to GND; ADJ regulated at 1.19V. |
| Output Current Capability | ±5A - sources up to +5A and sinks up to –5A while maintaining voltage regulation. |
| Switching Frequency | 100kHz to 1MHz - set by RT resistor; supports SYNC input for external clock locking. |
| Operating Temperature | –55°C to 125°C - qualified for extended industrial and harsh-environment applications. |
| Package Dimensions | 11.25mm × 15mm × 3.42mm BGA - compact surface-mount footprint with bottom-thermal-pad for high-power dissipation. |
| Control Interface | CTL_I and CTL_T pins - 0V–1.5V analog inputs for independent positive/negative current limit programming. |
Pinout & Package
Package: 81-ball BGA (11.25mm × 15mm × 3.42mm), RoHS-compliant SAC305 finish, MSL Level 3, –55°C to 125°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Bank 3) | Power Input | Supplies internal regulator and power switches; requires local low-ESR bypass capacitor (≥330µF recommended). |
| VOUT (Bank 1) | Power Output | Delivers regulated bidirectional current; reverse current flows back to VIN - input bus must absorb regenerated energy. |
| GND (Bank 2) | Ground Reference | Primary thermal path; must connect to large local ground plane for thermal management and feedback return. |
| CTL_I / CTL_T (D8/E8) | Analog Current Limit Control | 0V–1.5V inputs determine max positive/negative output current; lower voltage wins for final limit setting. |
| ADJ (K8) | Voltage Setpoint Reference | Internally regulated at 1.19V; RADJ = 11.9/(VOUT – 1.19) kΩ sets output voltage. |
| RT (G8) | Frequency Programming | Resistor to GND sets switching frequency (100kHz–1MHz); 20% lower value required when using SYNC. |
| RUN (L6) | Enable / UVLO Input | Active-high enable; threshold 1.55V (±60mV hysteresis); sinks 5.5µA below turn-on point. |
| SS (J8) | Soft-Start Control | External capacitor ramps output voltage; 11µA internal current source defines start-up time. |
| SYNC (L7) | External Clock Input | Accepts external clock signal; disables internal oscillator when driven; must be grounded if unused. |
| VREF (F8) | 2V Buffered Reference | Stable 2V output (0.5mA drive); used to bias CTL_I/CTL_T when not actively controlled. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2-Quadrant Power Stage | Combines controller, MOSFETs, inductor, and support passives in single BGA module - eliminates layout-sensitive magnetics and gate-drive design. |
| Bidirectional CVCC Regulation | Maintains precise output voltage while sourcing (+5A) or sinking (–5A) current - essential for active load testing and thermoelectric control. |
| Independent Positive/Negative Current Limits | CTL_I and CTL_T pins allow asymmetric current limiting (e.g., +5A / –3A) for optimized thermal and system-level safety margins. |
| Forced Continuous Conduction Mode | Eliminates discontinuous switching at light loads - ensures stable EMI profile and enables reliable synchronization in multi-phase systems. |
| Thermal Protection with Auto-Recovery | Internal overtemperature shutdown activates above 125°C junction; switching resumes after cooldown - prevents latch-up during transient overload. |
Applications
| Peltier Driver | Battery Tester |
|---|---|
Use Scenario: Driving thermoelectric coolers (TECs) requiring rapid polarity reversal and precise current control for temperature stabilization. IC Role / Device Role / Timing Role: 2-quadrant CVCC regulator providing bidirectional current to TEC element while maintaining voltage compliance. Use Value: Enables sub-degree thermal regulation without external H-bridge or discrete current-sense amplifiers - reduces BOM count and PCB area by >40%. | Use Scenario: Simulating charge/discharge cycles on Li-ion or NiMH cells under controlled voltage/current profiles. IC Role / Device Role / Timing Role: Programmable current sink/source delivering ±5A with real-time limit adjustment via analog control pins. Use Value: Supports dynamic current profiling (e.g., CC-CV charging, pulse discharge) without firmware intervention - accelerates test throughput by eliminating microcontroller dependency. |
| Battery/Supercap Cell Balancing | Motor Drive Power Regulator |
Use Scenario: Active balancing of series-connected battery cells or supercapacitor stacks to equalize state-of-charge. IC Role / Device Role / Timing Role: High-efficiency bidirectional buck converter transferring energy from higher-voltage cells to lower-voltage ones. Use Value: Achieves >90% energy transfer efficiency during balancing - extends usable capacity and cycle life vs. passive resistor-based methods. | Use Scenario: Providing regulated, bidirectional power to brushed DC or stepper motor phases in closed-loop motion control. IC Role / Device Role / Timing Role: Voltage-regulated current source/sink driving motor windings with fast response to direction and torque commands. Use Value: Eliminates need for separate H-bridge and current-sense ICs - simplifies motor driver design while supporting regenerative braking energy recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-quadrant CVCC regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTM8052MPY#PBF | Same electrical specs and pinout; uses SnPb BGA finish instead of SAC305; identical –55°C to 125°C rating. | No functional difference; selected only where leaded solder process is mandated. | Choose LTM8052MPY#PBF only if SnPb assembly is required; otherwise LTM8052AMPY#PBF preferred for RoHS compliance. |
| LTM8052AEY#PBF | Same BGA package and RoHS finish; rated for –40°C to 125°C (not –55°C); otherwise identical CVCC functionality. | Suitable for commercial/industrial environments but not extended-cold applications like outdoor telecom or aerospace. | Select LTM8052AEY#PBF when ambient operating minimum is ≥–40°C - reduces cost while retaining full performance at standard temperatures. |
Compared with LTM8052AMPY#PBF, LTM8052MPY#PBF offers identical performance with SnPb termination for legacy processes, while LTM8052AEY#PBF trades extended cold-temperature capability for lower cost in standard industrial use cases - all three share pinout, CVCC architecture, and control interface.
Availability
LTM8052AMPY#PBF is available at Aetrix Electronics and suitable for Peltier driver designs, battery tester instrumentation, and cell-balancing systems requiring stable component supply with guaranteed long-term availability.
Supply support for LTM8052AMPY#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 µModule product line development, qualification, and support. Linear's µModule regulators integrate power components into compact, verified packages.
The LTM8052AMPY#PBF belongs to the µModule step-down regulator family designed for high-reliability, space-constrained applications demanding bidirectional current control - especially in thermal management, energy storage testing, and precision power delivery.
FAQ
What is the maximum negative output current supported by the LTM8052AMPY#PBF?
The LTM8052AMPY#PBF supports up to –5A of continuous negative output current when configured per datasheet conditions. At CTL_I = 1.5V, the typical negative current limit is –7.7A (min –6.9A, max –8.5A), but derating applies based on thermal and input voltage constraints. Full –5A operation is guaranteed across the –55°C to 125°C junction temperature range with proper PCB thermal design.
Does the LTM8052AMPY#PBF include overvoltage protection?
No - the LTM8052AMPY#PBF is an LTM8052A variant and does not include output overvoltage protection. Unlike the LTM8052, which shuts down internal switches upon exceeding 125% of target VOUT, the LTM8052AMPY#PBF continues regulating even if output voltage rises above the setpoint. This allows uninterrupted operation in applications where temporary overvoltage is expected, such as during load transients in Peltier or motor drive systems.
How is output voltage programmed on the LTM8052AMPY#PBF?
Output voltage on the LTM8052AMPY#PBF is set by a single resistor (RADJ) connected between the ADJ pin and GND. The ADJ pin is internally regulated to 1.19V, so RADJ = 11.9 / (VOUT – 1.19) kΩ. For example, a 1.2V output requires RADJ ≈ 11.9kΩ, while a 12V output requires RADJ ≈ 1.1kΩ. The resistor must be placed close to the ADJ pin with short traces to minimize noise coupling.
Can the LTM8052AMPY#PBF sink current without damaging upstream supplies?
Yes - the LTM8052AMPY#PBF safely sinks current by returning energy to the VIN bus, but upstream supplies must tolerate this regenerated power. If other devices on VIN cannot absorb the returned energy, input voltage may rise beyond 40V absolute maximum, risking damage. Use input clamping (TVS), bulk capacitance, or active input regulation to manage regenerated energy - as detailed in the "Input Precautions" section of the LTM8052AMPY#PBF datasheet.
What is the purpose of the CTL_T pin on the LTM8052AMPY#PBF?
The CTL_T pin on the LTM8052AMPY#PBF provides temperature-dependent current limiting using an NTC thermistor network. When connected to a thermistor divider, CTL_T voltage decreases as temperature rises, reducing the regulated output current to protect against thermal runaway. Its 0V–1.5V control range matches CTL_I, and the lower of the two voltages determines final current limit - enabling coordinated thermal and user-programmed current safety margins.
LTM8052AMPY#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Package/Case:
- 81-BBGA Module
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 6V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- 1.2 ~ 24V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 5A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- OCP, OTP, OVP
- Operating Temperature:
- -55°C ~ 125°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 81-BGA (15x11.25)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
LTM8052AMPY#PBF FAQ
1.How can I place an order for LTM8052AMPY#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM8052AMPY#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 LTM8052AMPY#PBF reliable?
The price and inventory of LTM8052AMPY#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM8052AMPY#PBF is usually 5 days.
3.What payment methods are accepted for LTM8052AMPY#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM8052AMPY#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM8052AMPY#PBF?
LTM8052AMPY#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM8052AMPY#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 LTM8052AMPY#PBF?
For technical support, including LTM8052AMPY#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM8052AMPY#PBF requirements.
6.How does Aetrix verify that LTM8052AMPY#PBF is sourced from the original manufacturer or authorized distributors?
All LTM8052AMPY#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 LTM8052AMPY#PBF meets industry standards.
7.What is the process for return or replacement of LTM8052AMPY#PBF?
All LTM8052AMPY#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM8052AMPY#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 LTM8052AMPY#PBF part is unused and in its original packaging.
Return procedure for LTM8052AMPY#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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