LTM4622EV - Dual 2.5A/Single 5A μModule Step-Down Regulator | Analog Devices
부품 번호: LTM4622EV ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $18.85 | $18.85 |
| 10 | $17.2 | $172.00 |
| 100 | $15.45 | $1,545.00 |
| 500 | $13.8 | $6,900.00 |
| 1,000 | $12.4 | $12,400.00 |
LTM4622EV 개요
A μModule regulator is a complete DC-DC switching power supply integrated into a single surface-mount package that includes the controller IC, power MOSFETs, magnetics, and compensation components, simplifying point-of-integration to PCB-level placement of input/output capacitors and a feedback resistor divider. The LTM4622 belongs to the broader category of non-isolated point-of-integration (PoL) DC-DC converters within power management ICs, designed for direct mounting adjacent to load devices on digital boards.
Key features include peak-current-mode control with cycle-by-cycle current limiting, internal frequency compensation, soft-start tracking, and an internal temperature monitor. The 1.5MHz default switching frequency (synchronizable from 0.75MHz to 1.5MHz) enables a compact solution footprint with low-ripple output. An output voltage tracking function and programmable soft-start support multi-rail sequencing in FPGA, ASIC, and processor power systems. The device is offered in E (extended -40°C to +125°C internal operating range), I (industrial), and MP (military plastic) temperature grades.
The LTM4622 architecture uses a synchronous buck topology with internal high-side and low-side N-channel MOSFETs, inductor, and a constant-frequency peak-current-mode controller. Dual outputs share the same internal clock and can be configured for either independent operation or parallel single-output mode. Internal thermal monitoring and overtemperature shutdown protect the device under overload conditions. The LGA package variant (EV) provides the lowest profile for height-constrained applications.
Typical applications include powering FPGAs, ASICs, DSPs, microprocessors, and high-density point-of-integration power systems in industrial, telecom, medical imaging, and test-and-measurement equipment. The dual-output configuration directly supplies core and I/O rails of modern digital ICs. For designs requiring higher output voltage or current, the LTM4622A variant (12V/2A) is pin-compatible.
When designing with the LTM4622EV, place input bulk capacitance close to the VIN balls to handle inrush, and minimize the feedback trace length to reduce noise pickup. The exposed ground balls should be soldered to a continuous ground plane for both electrical return and thermal dissipation.
드롭인 대체품: LTM4622EV — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
LTM4622AEV#PBF
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LTM4622EV#PBF
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LTM4622EV 최대 정격 & 전기적 특성
| 토폴로지 | Dual synchronous buck μModule regulator |
| 출력 수 | 2 (parallelable for 1 output) |
| 입력 전압 범위 | 3.6 V to 20 V |
| 출력 전압 범위 | 0.6 V to 5.5 V per channel |
| Output Current (per channel) | 2.5 A |
| Output Current (paralleled single output) | 5 A |
| Switching Frequency (default) | 1.5 MHz |
| Switching Frequency (sync range) | 0.75 MHz to 1.5 MHz |
| Package Type | LGA (EV suffix) |
| Package Dimensions | 6.25 mm × 6.25 mm × 1.82 mm |
| Operating Temperature Range (E grade) | -40 °C to +125 °C (internal) |
| Soft-Start / Tracking | Programmable soft-start; output voltage tracking |
| Internal Temperature Monitor | Yes (TMON pin) |
| RoHS 상태 | Compliant (PBF suffix) |
LTM4622EV 핀 구성
| 핀 A1 | GND — Power ground |
| 핀 A2 | VIN1 — Input supply for channel 1 |
| 핀 A3 | VIN1 — Input supply for channel 1 |
| 핀 A4 | VOUT1 — Regulated output channel 1 |
| 핀 A5 | VOUT1 — Regulated output channel 1 |
| 핀 B1 | GND — Power ground |
| 핀 B2 | VIN1 — Input supply for channel 1 |
| 핀 B3 | VIN1 — Input supply for channel 1 |
| 핀 B4 | VOUT1 — Regulated output channel 1 |
| 핀 B5 | VOUT1 — Regulated output channel 1 |
| 핀 C1 | FB1 — Feedback channel 1 (set with external divider) |
| 핀 C2 | TRACK/SS1 — Track/soft-start channel 1 |
| 핀 C3 | GND — Power ground |
| 핀 C4 | VOUT1S — Output sense channel 1 |
| 핀 C5 | PGOOD1 — Power good channel 1 |
| 핀 D1 | FB2 — Feedback channel 2 |
| 핀 D2 | TRACK/SS2 — Track/soft-start channel 2 |
| 핀 D3 | TMON — Internal temperature monitor output |
| 핀 D4 | VOUT2S — Output sense channel 2 |
| 핀 D5 | PGOOD2 — Power good channel 2 |
| 핀 E1 | SYNC — Clock sync input (0.75-1.5 MHz) |
| 핀 E2 | RUN — Run/enable control |
| 핀 E3 | GND — Power ground |
| 핀 E4 | VOUT2 — Regulated output channel 2 |
| 핀 E5 | VOUT2 — Regulated output channel 2 |
일반적인 애플리케이션
LTM4622EV 적합 용도: 6 애플리케이션s: FPGA Core and I/O Rail Power, ASIC and Processor Point-of-Load, Telecom and Networking Equipment, Medical Imaging and Diagnostic Equipment, Industrial Automation and Control Systems, Test and Measurement Instrumentation.
FPGA Core and I/O Rail Power
The LTM4622EV directly powers FPGA core and I/O rails from a 12V intermediate bus. Its dual 2.5A outputs supply the 0.85V-1.2V VCCINT core and 1.8V-3.3V VCCIO I/O banks of modern FPGAs with peak current up to 2.5A each. The 1.5MHz switching frequency and integrated magnetics keep the solution footprint under 1 square inch per channel. Output voltage tracking and programmable soft-start enable the required core-before-I/O power sequencing, which is mandatory for Xilinx 7-series, Intel Cyclone, and Lattice ECP5 power-up profiles. Compared to a discrete 2-stage switching + LDO solution, the μModule reduces PCB area by approximately 70% and eliminates discrete inductor selection.
추천
ASIC and Processor Point-of-Load
The LTM4622EV is engineered for point-of-load (PoL) placement adjacent to ASICs, network processors, DSPs, and microprocessors that draw 2-5A. Its 3.6V-20V input accepts the 5V or 12V intermediate bus commonly distributed across telecom and server backplanes, while the dual 0.6V-5.5V outputs deliver the core and I/O voltages these devices need. The paralleled single-output mode provides 5A for high-current cores such as Intel Atom, ARM Cortex-A53 clusters, and DSP cores. Internal temperature monitoring via the TMON pin and cycle-by-cycle current limiting protect the load during transient shorts. The thin 1.82mm LGA profile suits 1U rack-mounted systems where vertical clearance is tight.
추천
Telecom and Networking Equipment
The LTM4622EV powers line cards, base station units, and network switches that require dual isolated or shared rails from -48V-derived 12V or 5V buses. Its 3.6V-20V input covers the 5V/12V secondary rails typical after the front-end isolated bus converter, and dual outputs feed PHY ICs, SerDes, and clock synthesizer supplies. The 1.5MHz default switching frequency avoids interference with common 100MHz/125MHz reference clocks used in Ethernet PHYs when synchronized externally. The μModule's integrated EMI suppression (internal layout, controlled edge rates) helps meet EN 55022 Class B conducted emissions when paired with a Pi input filter. Industrial temperature grade (-40°C to +125°C internal) supports outdoor base station deployments.
추천
Medical Imaging and Diagnostic Equipment
The LTM4622EV serves medical imaging systems such as ultrasound front-ends, CT detector boards, and patient monitors where low-noise, compact power is essential. Its dual 2.5A outputs power digital signal processors, image sensors, and analog front-ends with tight noise and ripple requirements. The μModule's internal shielding and controlled switching edges reduce EMI that could couple into sensitive analog signal paths or imaging detectors. The LGA package's small footprint and 1.82mm profile suit handheld and portable diagnostic devices where board space is constrained. The extended temperature grade (E suffix) and high reliability of μModule construction support the long-life cycles typical of medical equipment.
추천
Industrial Automation and Control Systems
The LTM4622EV powers PLCs, industrial controllers, motor drivers, and machine vision cameras from 24V industrial buses (3.6V-20V input range covers 24V ±20%). Its dual 2.5A outputs feed microcontroller cores, FPGA logic, sensor interfaces, and communication transceivers with sequenced start-up. The integrated current-mode control provides excellent transient response to step loads typical of motor drivers switching between idle and active states. The μModule's industrial temperature grade and rugged LGA construction meet IEC 61010 industrial equipment requirements. Combined with digital isolators and a CAN/Ethernet transceiver, it forms a complete industrial node power subsystem in less than 2 square inches.
추천
Test and Measurement Instrumentation
The LTM4622EV powers oscilloscopes, spectrum analyzers, data acquisition systems, and signal generators where clean, stable rails are critical for measurement accuracy. Its low-output-ripple and high-PSRR dual outputs feed ADC/DAC reference circuits, FPGA DSP blocks, and display controllers from a 12V or 5V internal bus. The 1.5MHz switching frequency (synchronized to a system clock) avoids aliasing into measurement bands. Programmable soft-start and output tracking simplify complex multi-rail power sequencing needed by mixed-signal ICs and high-resolution converters. The μModule's small footprint allows more channels per square inch, enabling higher channel density in modular instruments.
추천
추천 제품 요약
엔지니어링 참조 데이터: LTM4622EV — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LTM4622AEV#PBF | LTM4622EV#PBF | LTM4622IY#PBF |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | LGA-25 (6.25 x 6.25 mm) | LGA-25 (6.25 x 6.25 mm) - same | LGA-25 (6.25 x 6.25 mm) - same | BGA-25 (6.25 x 6.25 mm) - different land pattern |
| Output Current per Channel | 2.5 A | 2.0 A | 2.5 A | 2.5 A |
| Output Current (paralleled) | 5 A | 4 A | 5 A | 5 A |
| Output Voltage Range | 0.6 V to 5.5 V | 1.5 V to 12 V | 0.6 V to 5.5 V | 0.6 V to 5.5 V |
| Input Voltage Range | 3.6 V to 20 V | 3.6 V to 20 V | 3.6 V to 20 V | 3.6 V to 20 V |
| Switching Frequency | 1.5 MHz (sync 0.75-1.5 MHz) | 1.5 MHz (sync 0.75-1.5 MHz) | 1.5 MHz (sync 0.75-1.5 MHz) | 1.5 MHz (sync 0.75-1.5 MHz) |
| Pin-to-Pin Compatibility | Reference (LGA EV) | Drop-in (LGA EV) | Identical | Different land pattern (BGA) |
주요 차별점
- True dual-output with parallelable single-output 5A mode (vs LTM4622AEV#PBF)
- Lower profile 1.82mm LGA package (vs LTM4622IY#PBF)
- Integrated tracking, PGOOD, and temperature monitor (vs Discrete buck + LDO solution)
설계 노트
Estimated: at VIN=12V, VOUT=3.3V, IOUT=2.5A, power dissipation in the LTM4622EV is approximately (12V - 3.3V) × 2.5A = 21.75 W (input minus output × current, neglecting ripple). With the LGA package's thermal resistance of approximately 25 °C/W on a 4-layer JEDEC test board, junction temperature rise above ambient can reach 50-70°C under continuous full load. Place the LTM4622EV over a continuous ground plane and add thermal vias to inner copper layers. For sustained 5A paralleled operation, additional copper area or airflow is required.
Place input bulk capacitors within 5 mm of the VIN balls to minimize parasitic inductance and handle inrush. Keep the FB and VOUT sense traces short and away from noisy switching nodes. Per the Analog Devices datasheet, all GND balls must be soldered to a continuous ground plane for both electrical return and thermal dissipation. Use a 4-layer PCB with a dedicated ground plane layer for best EMI performance.
Do not confuse the LGA EV variant with the BGA IY variant despite identical internal silicon - per Analog Devices EngineerZone, the land patterns are NOT interchangeable. Do not exceed the 20V absolute maximum input voltage, including transients from hot-plug events. When paralleling both channels for a single 5A output, connect FB1 and FB2 together and use a single feedback resistor divider. Always populate the TRACK/SS capacitor to control startup behavior.
규정 준수 정보
RoHS and REACH compliant per Analog Devices product page. PBF suffix indicates lead-free terminal plating. The LTM4622 is not AEC-Q100 qualified - choose automotive-grade μModule regulators for AEC-Q100 applications. Halogen-free status was not explicitly stated in the provided web data.
