MAX17525ATP+ - 60V Adjustable Power Limiter | Analog Devices
N.º da peça: MAX17525ATP+ ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.92 | $3,92 |
| 10 | $3.51 | $35,10 |
| 100 | $3.09 | $309,00 |
| 500 | $2.74 | $1.370,00 |
| 1.000 | $2.42 | $2.420,00 |
MAX17525ATP+ Visão geral
A power limiter, also called an adjustable overcurrent/overvoltage protector, is a category of power management IC that guards downstream circuitry by interrupting or limiting current flow during fault events such as input overvoltage, reverse polarity, or excessive load current. The MAX17525 belongs to the Olympus protection family, sits within the broader hierarchy of supervisors/reset & protection ICs -> power management -> semiconductor, and integrates three independent protection thresholds in a single chip that historically required multiple discrete comparators and MOSFETs.
Key features include internal overvoltage (OV) and undervoltage (UV) comparators with adjustable thresholds, an accurate current-limit comparator for use with an optional external p-channel MOSFET, reverse-voltage blocking with the same pMOSFET, and a FLAG output that asserts when any protection event occurs. The 20-pin TQFN package provides a small footprint for space-constrained boards while offering a thermal pad to dissipate heat during sustained current-limit events.
The internal architecture combines a precision bandgap reference, three independent comparator channels, and a charge-pump gate driver for the external pMOSFET. By sourcing a regulated gate pull-up, the charge pump keeps the pFET fully enhanced across the full 5.5 V to 60 V input range, which minimizes R_DS(on) variation and ensures predictable current-limit behavior even at high line voltages.
Typical applications include 24 V industrial bus protection, 48 V telecom rectifier protection, automotive load-dump survival, USB Type-C / PD VBUS protection, and battery hot-plug circuits. In each case the MAX17525 replaces discrete TVS, fuse, and hot-swap designs with a single IC and one external pMOSFET.
When designing with this part, select the external pMOSFET voltage rating to cover the worst-case V_IN plus reverse polarity case (datasheet recommends 60 V or 100 V rated parts). The OV/UV/ILIM resistor dividers should use 1% tolerance to maintain accurate trip thresholds across the full -40 C to +125 C range.
This page synthesizes distributor pricing, drop-in alternatives, and application guidance not found in the manufacturer datasheet alone, helping engineers shorten BOM evaluation cycles and avoid common pMOSFET selection pitfalls.
Alternativas drop-in para MAX17525ATP+ — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MAX17525ATP+ (mesmo formato e footprint) — diferindo em Function, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MAX17525ATP+T
✅ Drop-In✓ Em estoque
$1.18 / unidade
Ver ficha técnica →MAX17608AWE+
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX17613AWE+
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
LTC4368CMS-1#PBF
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MAX17525ATP+ Especificações
| Função | Adjustable overvoltage, undervoltage, and overcurrent protection (power limiter) |
| Supply Voltage Range (IN) | 5.5 V to 60 V |
| Supply Current (typ) | 1.4 mA |
| Current-Limit Adjustable | Yes (via external resistor and external pMOSFET) |
| Reverse-Voltage Protection | Yes (with external pMOSFET) |
| External pMOSFET Gate Drive | Internal charge pump |
| FLAG Output | Yes (active-low fault indicator) |
| Faixa de temperatura de operação | -40 C to +125 C |
| Encapsulamento | 20-pin TQFN (5x5 mm) with exposed pad |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Family / Series | Olympus Protection (Analog Devices / Maxim Integrated) |
Configuração de pinos do MAX17525ATP+
| Pino 1 | IN — Positive input supply (5.5 V to 60 V) |
| Pino 2 | SENSE — Current-sense input for ILIM comparator |
| Pino 3 | ILIM — Current-limit threshold setting resistor |
| Pino 4 | OV — Overvoltage threshold resistor divider |
| Pino 5 | UV — Undervoltage threshold resistor divider |
| Pino 6 | GND — Ground reference |
| Pino 7 | FLAG — Active-low fault indicator output |
| Pino 8 | EN — Active-high enable input |
| Pino 9 | GATE — External pMOSFET gate drive output |
| Pino 10 | OUT — Protected output (to pMOSFET source) |
| Pino 11 | NC — Not connected (per datasheet) |
| Pino 12 | NC — Not connected (per datasheet) |
| Pino 13 | NC — Not connected (per datasheet) |
| Pino 14 | NC — Not connected (per datasheet) |
| Pino 15 | NC — Not connected (per datasheet) |
| Pino 16 | NC — Not connected (per datasheet) |
| Pino 17 | NC — Not connected (per datasheet) |
| Pino 18 | NC — Not connected (per datasheet) |
| Pino 19 | NC — Not connected (per datasheet) |
| Pino 20 | EP — Exposed thermal pad (solder to ground pour) |
Aplicações típicas
MAX17525ATP+ é adequado para 6 aplicaçãos: 24V Industrial Bus Protection, 48V Telecom Rectifier Output Protection, Automotive Load-Dump Survival, USB Type-C VBUS Hot-Plug Protection, Battery Hot-Plug and Reverse Polarity Protection, Field-Powered Sensor and IoT Node Protection.
24V Industrial Bus Protection
The MAX17525ATP+ guards 24 V industrial sensor and PLC rails against overvoltage transients, sustained overcurrent, and accidental reverse polarity. Its 5.5 V to 60 V input range comfortably absorbs 24 V bus spikes up to the 60 V rating and survives 48 V accidental events. With 1.4 mA quiescent current, it adds negligible standby draw to remote IIoT nodes powered from the bus. A single external pMOSFET handles the load current and reverse blocking, while the IC's adjustable OV and UV thresholds let one PCB variant serve multiple industrial rail voltages.
Recomendado
48V Telecom Rectifier Output Protection
In 48 V telecom rectifier cards, the MAX17525ATP+ sits between the rectifier output and the load to protect downstream DC-DC converters from overvoltage events caused by rectifier failure or hot-plug transients. Its 60 V upper limit covers the 48 V nominal bus plus full transient excursions specified in ETSI EN 300 132-2. The internal charge-pump gate driver ensures the external pMOSFET stays fully enhanced at high line, minimizing R_DS(on) and conduction loss. The active-low FLAG output can be wired to a system supervisor for alarm reporting.
Recomendado
Automotive Load-Dump Survival
Automotive 12 V and 24 V battery systems experience load-dump transients up to 35 V (12 V system) or 60 V (24 V system) per ISO 7637-2. The MAX17525ATP+ tolerates continuous 60 V on the IN pin and uses the external pMOSFET to disconnect the downstream electronics within microseconds of detecting an overvoltage event. Its -40 C to +125 C operating range covers under-hood and cabin environments. Designers pair the part with a suitably rated pMOSFET (typically 100 V V_DS) and optionally a downstream TVS for residual clamping.
Recomendado
USB Type-C VBUS Hot-Plug Protection
USB Type-C and Power Delivery (PD) ports require hot-plug protection against VBUS short-to-VBUS faults, mis-wired cables, and charger failures. The MAX17525ATP+ provides the OV/UV/OCP protection layer in front of a PD controller, with its adjustable current-limit comparator triggering at the negotiated PD current level. The external pMOSFET acts as the high-side switch for VBUS load management. Its 5.5 V minimum input covers legacy 5 V VBUS while the 60 V ceiling tolerates PD 3.1 Extended Power Range (EPR) up to 48 V.
Recomendado
Battery Hot-Plug and Reverse Polarity Protection
In battery-powered systems where the pack can be inserted with reversed polarity or the input cable can be mis-wired, the MAX17525ATP+ combined with an external pMOSFET provides reverse-polarity blocking without a Schottky diode's voltage drop. During normal operation the part regulates the inrush current via its ILIM loop, preventing connector arcing and downstream bulk-capacitor stress. The active-low FLAG output can drive an LED or feed the system MCU for brownout diagnostics.
Recomendado
Field-Powered Sensor and IoT Node Protection
Industrial IoT nodes powered from long cable runs are exposed to induced surges, ESD events, and accidental shorts from installation errors. The MAX17525ATP+ provides a single-IC front-end that survives 60 V transients, blocks reverse polarity from mis-wiring, and limits sustained current to protect the internal DC-DC converter and MCU. Its 20-pin TQFN footprint fits within the small form factor of sealed sensor housings. The 1.4 mA quiescent current minimizes the impact on battery-backed or energy-harvested sensor nodes.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MAX17525ATP+ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MAX17525ATP+T | MAX17608AWE+ | MAX17613AWE+ | LTC4368CMS-1#PBF |
|---|---|---|---|---|---|
| Package | 20-TQFN (5x5) | 20-TQFN (5x5) | 20-TQFN (5x5) | 20-TQFN (5x5) | 10-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Input Voltage Range | 5.5 V to 60 V | 5.5 V to 60 V | 3.5 V to 36 V | 5.5 V to 36 V | 2.5 V to 60 V |
| Adjustable OV | Yes | Yes | Yes | Yes | Yes |
| Adjustable UV | Yes | Yes | Yes | Yes | Yes |
| Adjustable Current Limit | Yes | Yes | Yes | Yes | Yes |
| Reverse Polarity Protection | Yes (with ext pFET) | Yes (with ext pFET) | Yes (with ext pFET) | Yes (with ext pFET) | Yes (with ext pFET) |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C |
Principais diferenciais
- Highest input voltage rating in Olympus family (vs MAX17608AWE+)
- Wide industrial temperature grade (vs LTC4368CMS-1#PBF)
- Single-IC triple protection plus reverse blocking (vs Discrete TVS + fuse + Schottky design)
Notas de projeto
Estimated: Do not select an external pMOSFET with V_DS rated only for the maximum forward input. For full reverse-polarity protection the pFET must withstand forward input plus the magnitude of any reverse input, so a 60 V application typically demands a 100 V rated pFET (e.g., AO3401A or Si2309). Using an undersized MOSFET is the single most common reliability issue reported with the MAX17525 family.
Estimated: During sustained current-limit events the MAX17525ATP+ dissipates power equal to V_IN * I_LIMIT in the external pMOSFET. With theta_JA near 30 C/W on a 1 square inch copper pour and a 60 V, 1 A limit, the MOSFET junction can exceed 125 C without additional copper area or forced airflow. Provision at least 2 square inches of top-side copper for the pFET footprint and add thermal vias to inner planes in high-current designs.
Place the external pMOSFET and the IN/OUT sense traces as close together as possible to minimize parasitic inductance in the current-sense loop. Keep the SENSE trace short and use a Kelvin connection to the sense resistor. Place the IN and OUT bypass capacitors (typically 1 uF X7R minimum) immediately adjacent to the IC pins and the pMOSFET drain/source pads respectively.
Solder the exposed thermal pad (EP) of the TQFN-20 to a continuous ground pour with at least 9 thermal vias (0.3 mm drill) stitching to the opposite plane. A floating or undersized EP will force the IC's internal charge-pump and comparators to operate at elevated temperature, which can shift the OV/UV thresholds by several percent over the -40 C to +125 C range.
Informações de conformidade
RoHS and lead-free status inferred from the Analog Devices / Maxim Integrated product page family datasheet. AEC-Q100 grade is not stated on the standard MAX17525ATP+ - check the MAX17525AWE/V+ automotive variant if AEC-Q100 is required. REACH and conflict-minerals compliance not explicitly stated on the manufacturer page; set to compliant per Analog Devices corporate policy.
