TPS74601PBDRVR - 1A Adjustable LDO with Power Good | Texas Instruments
부품 번호: TPS74601PBDRVR ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0.95 | $0.95 |
| 10 | $0.86 | $8.60 |
| 100 | $0.72 | $72.00 |
| 500 | $0.61 | $305.00 |
| 1,000 | $0.52 | $520.00 |
| 3,000 | $0.46 | $1,380.00 |
TPS74601PBDRVR 개요
An LDO (Low-Dropout) linear regulator is a class of voltage regulator that maintains a tightly regulated output voltage even when the input-to-output differential (dropout) is very small - typically a few hundred millivolts. In the broader system taxonomy, an LDO sits below the category of linear regulators, which in turn sits below voltage regulators, and ultimately below power management ICs. LDOs convert a higher DC rail to a lower, accurate DC rail without the switching noise of a buck converter, trading efficiency for clean output, which is essential when the load is sensitive to ripple or high-frequency noise.
Key features that distinguish the TPS74601 include a 45 dB PSRR at 100 kHz, internal soft-start, foldback overcurrent protection, output discharge, and an open-drain PG output that asserts when the output is within regulation. The TPS74601PBDRVR uses a PNP bipolar pass element architecture, which provides the low dropout characteristic and high efficiency at moderate VIN/VOUT differentials. Stability is achieved with only a 1 uF ceramic output capacitor, simplifying BOM and lowering solution cost.
Typical applications include point-of-load regulation for microcontrollers, FPGAs, SoCs and DDR memory in portable and battery-powered equipment, USB-powered peripherals, building automation, and industrial sensor nodes. The small 2x2 mm footprint and high accuracy suit dense board layouts where board area is constrained. When designing with the TPS74601PBDRVR, ensure VIN-VOUT headroom stays above 225 mV at full load, place the 1 uF input and output ceramic capacitors as close to the IC as possible, and use the PG output for rail sequencing with downstream loads.
드롭인 대체품: TPS74601PBDRVR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: TPS74601PBDRVR (동일 폼 팩터 및 풋프린트) — 차이점: Dropout Voltage, Output Type, Package.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
TPS74601PDRVR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TPS74501PDRVR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLV75901PDRVR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TPS74633PQWDRBRQ1
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TPS74633PQWDRVRQ1
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TPS74601PBDRVR 최대 정격 & 전기적 특성
| 출력 유형 | Adjustable |
| 출력 전압 범위 | 0.55 V to 5.5 V |
| 최대 출력 전류 | 1 A |
| 입력 전압 범위 | 1.5 V to 6.0 V |
| Absolute Maximum Input Voltage | 6.5 V |
| 드롭아웃 전압 | 225 mV at 1 A (typical) |
| Quiescent Current (typical) | 25 uA |
| Output Voltage Accuracy | 1% over -40C to +125C |
| PSRR at 100 kHz | 45 dB |
| 파워 굿 출력 | Yes (open-drain) |
| 인에이블 핀 | Yes (active-high) |
| Output Capacitor Requirement | 1 uF ceramic minimum |
| 동작 온도 | -40C to +125C |
| 패키지 | 6-pin WSON (DRV) 2x2 mm with EP |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
TPS74601PBDRVR 핀 구성
| 핀 1 | EN — Active-high enable input; drive high to turn on the regulator, low for shutdown |
| 핀 2 | GND — Ground reference |
| 핀 3 | IN — Input supply voltage (1.5 V to 6.0 V) |
| 핀 4 | OUT — Regulated output voltage (0.55 V to 5.5 V, up to 1 A) |
| 핀 5 | PG — Open-drain power-good output; pulls low when OUT is out of regulation |
| 핀 6 | ADJ — Feedback input for adjustable output voltage via external resistor divider |
일반적인 애플리케이션
TPS74601PBDRVR 적합 용도: 7 애플리케이션s: Battery-Powered IoT Sensor Nodes, USB-Powered Peripherals and Dongles, FPGA and SoC Point-of-Load Rails, Industrial Building Automation, DDR Memory Termination and VTT Rails, Wearable and Portable Health Devices, Test and Measurement Front-Ends.
Battery-Powered IoT Sensor Nodes
The TPS74601PBDRVR's 225 mV ultra-low dropout at 1 A and 25 uA typical quiescent current make it well suited to battery-powered IoT sensor nodes operating from a single lithium cell or 2x AA batteries. With the LDO placed directly after the battery, the input rail can sag down to VOUT + 0.225 V before regulation is lost, extending usable runtime by tens of percent versus a 500 mV-dropout part. The shutdown current (EN low) drops to single-digit uA, preserving cell capacity during deep sleep. The 6-pin WSON 2x2 mm footprint fits dense sensor PCBs, and the power-good output can wake the host MCU only when the rail is stable, avoiding brown-out resets at low battery voltage.
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USB-Powered Peripherals and Dongles
For USB-powered peripherals that need a clean internal rail from the nominal 5 V VBUS, the TPS74601PBDRVR regulates down to common logic levels (3.3 V, 1.8 V, 1.2 V) with 1-A peak load capability. The 6 V absolute-maximum input tolerance comfortably handles VBUS transients while the 45 dB PSRR at 100 kHz suppresses noise coupled from upstream USB host switching. The enable pin allows the host controller to assert soft-start when enumeration completes, and the open-drain power-good signal can signal back to a USB-PD controller. The 2x2 mm WSON footprint fits inside compact dongle enclosures, and stability with a single 1 uF ceramic output cap keeps the BOM small and cost-effective.
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FPGA and SoC Point-of-Load Rails
Modern FPGAs and SoCs require multiple low-voltage, high-current rails (typically 1.0 V core, 1.8 V aux, 3.3 V IO) with tight 1-3% accuracy and clean transient response. The TPS74601PBDRVR delivers up to 1 A per rail from a 5 V or 3.3 V intermediate bus, with 1% accuracy across -40C to +125C and fast load-transient recovery thanks to its PNP pass architecture. The open-drain power-good output is essential for sequencing multiple rails - the host sequencer can hold downstream cores in reset until PG asserts, preventing latch-up or in-rush current faults. The exposed thermal pad of the WSON-6 package allows several LDOs to be placed near the SoC without overheating, each independently regulating its own rail.
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Industrial Building Automation
Building automation controllers, sensor interfaces and HVAC nodes commonly operate from 24 V AC/DC rectified rails stepped down to logic levels. The TPS74601PBDRVR's 6 V maximum input is well-matched to post-buck 5 V or 3.3 V intermediate rails and provides 1-A local regulation for downstream microcontrollers, communication transceivers and relays. The -40C to +125C operating junction temperature range and 1% accuracy across this range suit harsh factory and outdoor enclosures. The PG output enables deterministic fault signaling back to a central controller over RS-485 or CAN, while foldback overcurrent protection prevents damage from wiring shorts in field installations.
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DDR Memory Termination and VTT Rails
DDR memory requires a precise VREF and half-rail VTT termination supply that tracks the memory rail with tight accuracy. While dedicated VTT regulators exist, general-purpose LDOs like the TPS74601PBDRVR can provide auxiliary low-current rails and reference voltages in DDR3/DDR4 designs when configured with the feedback divider set to half the memory voltage. The 1% output accuracy and 25 uA quiescent current make it suitable for VTT-style reference generation that must remain stable across temperature. The 1-A capability also supports DDR4 LPDDR4 termination in low-density designs.
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Wearable and Portable Health Devices
Wearable health monitors, fitness bands and portable medical accessories demand tiny footprints, high efficiency and ultra-low standby current - all of which the TPS74601PBDRVR delivers in its 2x2 mm WSON package. The 225 mV dropout maximizes usable battery capacity from a 3.7 V Li-ion cell down to 3.3 V rails, and the EN pin enables deep sleep with single-digit uA quiescent draw. The 45 dB PSRR at 100 kHz prevents switching noise from Bluetooth or Wi-Fi companion chips from coupling into analog measurement channels such as heart-rate or SpO2 sensor front-ends. The exposed thermal pad maintains low thermal resistance under sustained 1-A pulses from radio transmission bursts.
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Test and Measurement Front-Ends
Bench instruments, data acquisition modules and lab-grade sensors need stable, low-noise supply rails to achieve rated measurement accuracy. The TPS74601PBDRVR's 45 dB PSRR at 100 kHz and 1% output accuracy over -40C to +125C ensure analog front-end stages (ADCs, DACs, op-amps, references) see a clean, predictable rail. The 1-A output handles multi-channel analog front-ends simultaneously, while the power-good output can gate downstream calibration routines. The 6-pin WSON DRV package and minimal external components (1 uF input, 1 uF output) enable compact daughter-card layouts in modular instruments.
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추천 제품 요약
엔지니어링 참조 데이터: TPS74601PBDRVR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TPS74601PDRVR | TPS74501PDRVR | TLV75901PDRVR | TPS74633PQWDRBRQ1 | TPS74633PQWDRVRQ1 |
|---|---|---|---|---|---|---|
| Package | 6-pin WSON (DRV) 2x2 mm | 6-pin WSON (DRV) 2x2 mm - same | 6-pin WSON (DRV) 2x2 mm - same | 6-pin WSON (DRV) 2x2 mm - same | 6-pin WSON (DRV) 2x2 mm - same | 6-pin WSON (DRV) 2x2 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Voltage | Adjustable 0.55 V to 5.5 V | Adjustable 0.55 V to 5.5 V | Adjustable 0.55 V to 5.5 V | Adjustable | Fixed 3.3 V | Fixed 3.3 V |
| Output Current | 1 A | 1 A | 1 A | 1 A | 1 A | 1 A |
| Dropout Voltage (typ at 1 A) | 225 mV | 225 mV | Similar | Similar | 190 mV | 190 mV |
| Power Good Output | Yes (open-drain) | Yes | No | No | Yes | Yes |
| Quiescent Current (typ) | 25 uA | 25 uA | Similar | Similar | Similar | Similar |
| Automotive (AEC-Q100) | No | No | No | No | Yes | Yes |
주요 차별점
- Integrated power-good output in 6-pin WSON footprint (vs TPS74501PDRVR)
- Lower-cost drop-in alternative when PG is not required (vs TLV75901PDRVR)
- Adjustable output versus fixed-output Q1 automotive variants (vs TPS74633PQWDRVRQ1)
설계 노트
Place a 1 uF low-ESR ceramic capacitor (X7R or X5R) directly at the IN pin and a 1 uF ceramic capacitor directly at the OUT pin, each within 2-3 mm of the IC and connected to a clean ground plane. The WSON-6 (DRV) package's exposed thermal pad (EP) MUST be soldered to a top-side copper pour that is then stitched with multiple thermal vias to the inner/ground planes; this provides the lowest thermal resistance path for sustained 1-A loads. Keep input traces short and wide to minimize parasitic inductance that can cause VIN ringing during load transients.
Estimated: At VIN = 5.0 V, VOUT = 3.3 V and IOUT = 1 A the TPS74601PBDRVR dissipates (5.0 - 3.3) V * 1 A = 1.7 W. The WSON-6 DRV package with a properly soldered EP on a 1 sq-inch 1-oz copper pour typically achieves theta_JA around 60-80 C/W, which gives a junction temperature rise of about 100-140 C above ambient. For sustained 1-A operation, derate VIN/VOUT differential, use a larger copper area or add a small heatsink. Above VIN = 5.5 V into a 1.0 V output at 1 A the dissipation jumps to 4.5 W and proper thermal management becomes mandatory.
Do not exceed the absolute maximum input voltage of 6.5 V; transients above this level will damage the device. Do not leave the ADJ/FB pin floating - it must be tied to the external resistor divider that sets the output voltage, otherwise the output will rise to the input. Ensure the EN pin is driven to a valid logic level - leaving it floating can cause indeterminate startup behavior. The power-good output is open-drain and requires an external pull-up resistor (typically 10 kOhm to 100 kOhm) to a logic rail.
Route the ADJ/FB trace as a Kelvin connection directly to the top of the feedback divider, away from noisy switching nodes, to preserve 1% output accuracy. Place the feedback divider close to the ADJ pin to minimize the high-impedance trace length and reduce noise pickup. The PG trace can be routed to a GPIO of the host controller; add a small RC filter (10 kOhm + 100 pF) if the host's PG input is sensitive to fast transients. Keep the input trace and output trace on separate layers or with a ground-fill moat between them to minimize coupling.
규정 준수 정보
RoHS compliant per TI product page. Standard part - not AEC-Q100 qualified (select TPS74633PQWDRVRQ1 or TPS74633PQWDRBRQ1 for automotive). Halogen-free status not explicitly stated in the verified web data.
