LM5069MM-1/NOPB - 80V Hot Swap Controller, Latch-Off | TI
N.º da peça: LM5069MM-1/NOPB ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.95 | $3,95 |
| 10 | $3.55 | $35,50 |
| 100 | $3.16 | $316,00 |
| 500 | $2.84 | $1.420,00 |
| 1.000 | $2.53 | $2.530,00 |
| 3.000 | $2.21 | $6.630,00 |
LM5069MM-1/NOPB Visão geral
A hot-swap controller is a specialized power-management integrated circuit that controls the inrush current when a printed circuit board is inserted into a live backplane, allowing the bulk capacitors on the board to charge safely while protecting the connector, the MOSFET pass element, and the upstream supply from stress. Hot-swap controllers sit within the broader hierarchy of power-management ICs, between upstream OR-ing controllers / eFuses and downstream point-of-load (POL) regulators. The LM5069 family specifically addresses positive high-voltage rails up to 80V, making it a key building block in -48V telecom, 24V industrial, and 12V/24V/48V distributed-bus systems.
Key features include a 9V-to-80V operating range, 100V absolute maximum on VIN, programmable current limit with external sense resistor, programmable inrush dV/dt control, programmable undervoltage and overvoltage lockout with hysteresis, power-limiting foldback during startup, and a fault timer. The LM5069-1 variant latches off after a fault, requiring manual reset, while the LM5069-2 variant auto-restarts at a fixed duty cycle.
Architecturally, the LM5069 uses an internal charge pump to drive the external N-FET gate above VIN, an external sense resistor (RSENSE) for cycle-by-cycle current sensing, and a transconductance amplifier that closes the loop on the inrush profile. The TIMER pin capacitor sets the fault integration period, while the UVLO/OVLO dividers on the EN / UVLO pin set the input voltage window. Compared to discrete inrush solutions, the LM5069 reduces BOM count, improves fault repeatability, and provides telemetry-grade protection that meets the requirements of telecom (NEBS) and industrial (IEC 61131-7-1) hot-swap cards.
Typical applications include -48V telecom line-card hot swap, 24V industrial PLC and motor-drive bus protection, 12V/24V/48V battery-backed server and storage hot swap, RAID / disk-array plug-in cards, and ATCA / AdvancedTCA payload boards. Designers choose the LM5069 family for its combination of wide operating voltage, power limiting during startup transients, and industry-standard 10-pin VSSOP footprint.
When designing with this part, select the external RSENSE to set the circuit-breaker threshold and the GATE dV/dt capacitor to control inrush current. The TIMER capacitor value sets the fault integration window: too short can nuisance-trip on benign transients, too long can allow sustained overcurrent. Always verify SOA of the external pass MOSFET under worst-case hot-plug at minimum VIN.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including cross-brand pin-compatibility notes for Analog Devices and Maxim Integrated parts.
Alternativas drop-in para LM5069MM-1/NOPB — 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 LM5069MM-1/NOPB (mesmo formato e footprint) — diferindo em Function, MSL Level.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
LM5069MM-2/NOPB
✅ Drop-In✓ Em estoque
$1.92 / unidade
Ver ficha técnica →LM5069MMX-1/NOPB
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
LM5069MMX-2/NOPB
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
LM5060MM/NOPB
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
LM5069MM-1/NOPB Especificações
| Função | Hot-swap / inrush current controller |
| Operating Voltage (VIN) | 9 V to 80 V |
| Absolute Maximum VIN | 100 V |
| Canais | 1 |
| Applications | General Purpose |
| Fault Response | Latch-off (LM5069-1) / Auto-restart (LM5069-2) |
| External Pass Element | External N-channel MOSFET (not integrated) |
| Limitação de corrente | Programmable via external sense resistor |
| Power Limiting / Foldback | Yes (during inrush) |
| Undervoltage Lockout | Programmable with external resistor divider |
| Overvoltage Lockout | Programmable with external resistor divider |
| Encapsulamento / Caixa | 10-VSSOP (DGS), 3.00 mm width |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -40 C to +125 C |
| Nível MSL | 1 (per TI VSSOP-10 data) |
| Lead-Free / RoHS | Yes (NOPB suffix denotes Pb-free) |
Configuração de pinos do LM5069MM-1/NOPB
| Pino 1 | VIN — Positive supply input (9V to 80V) |
| Pino 2 | SENSE — Current sense input - connect to RSENSE high side |
| Pino 3 | EN/UVLO — Enable / undervoltage lockout threshold input |
| Pino 4 | OVLO — Overvoltage lockout threshold input |
| Pino 5 | TIMER — Fault timer capacitor - sets fault integration period |
| Pino 6 | PLIM — Power limit / foldback programming |
| Pino 7 | PGOOD — Power Good open-drain output |
| Pino 8 | GATE — Gate drive output for external N-MOSFET |
| Pino 9 | DRAIN — Drain sense / feedback input from external FET drain |
| Pino 10 | GND — Ground reference |
Aplicações típicas
LM5069MM-1/NOPB é adequado para 6 aplicaçãos: -48V Telecom Line-Card Hot Swap, 24V Industrial PLC and Motor-Drive Bus Protection, 12V/24V/48V Battery-Backed Server and Storage Hot Swap, RAID / Disk-Array Plug-In Card Insertion, ATCA / AdvancedTCA Payload Board Hot Swap, 48V Step-Down / Point-of-Load Pre-Regulator.
-48V Telecom Line-Card Hot Swap
The LM5069MM-1/NOPB's 9V-to-80V operating range and 100V absolute maximum make it ideal for -48V telecom line-card hot-swap, where the input rail can swing from -36V to -72V under load and fault conditions. In this application the LM5069 sits between the backplane connector and the downstream point-of-load regulators, controlling an external N-MOSFET pass element with a programmable inrush dV/dt and latching off after a sustained overcurrent. The latch-off behavior of the -1 variant matches NEBS / telecom requirements for fault persistence. Compared to discrete inrush solutions using an NTC plus a fuse, the LM5069 reduces BOM count and provides repeatable, telemetry-grade protection.
Recomendado
24V Industrial PLC and Motor-Drive Bus Protection
The LM5069MM-1/NOPB's 9V-to-80V range and programmable OVLO / UVLO make it a strong fit for 24V industrial PLC and motor-drive bus protection, where transients from inductive loads can push the rail well above 24V. The LM5069 controls an external MOSFET that handles the inrush of large bulk capacitors on the PLC backplane, then operates as a circuit breaker with programmable fault integration. The -1 latch-off variant is preferred in industrial safety contexts where automatic restart could re-energize a faulted load. Compared to LM5060, the LM5069 adds power-limiting foldback that prevents MOSFET SOA violation during capacitive inrush at low VIN.
Recomendado
12V/24V/48V Battery-Backed Server and Storage Hot Swap
The LM5069MM-1/NOPB enables safe hot-swap insertion of storage blades and server cards into live 12V, 24V, or 48V backplanes by controlling inrush current with a programmable GATE dV/dt. The PGOOD output can drive a downstream sequencer or LED indicator, and the latch-off fault response prevents a faulted card from repeatedly drawing current from the bus. According to TI datasheet, the part supports the bulk-capacitor charging profiles typical of server backplanes (hundreds to thousands of microfarads). Compared to a discrete MOSFET plus fuse, the LM5069 enables fault telemetry and reduced downtime.
Recomendado
RAID / Disk-Array Plug-In Card Insertion
In RAID arrays and disk-array plug-in cards, the LM5069MM-1/NOPB protects the backplane from inrush when a disk carrier is hot-swapped, while the latch-off fault policy prevents a failing disk from repeatedly loading the bus. The part's 80V rating covers 12V and 24V storage backplanes with substantial transient headroom. Combined with the LM5069's programmable UVLO and OVLO, designers can set the input voltage window tightly to avoid operation on undervoltage rails. According to TI datasheet, the TIMER-based fault integration avoids nuisance trips on the brief inrush transients typical of spinning rust disks.
Recomendado
ATCA / AdvancedTCA Payload Board Hot Swap
The LM5069MM-1/NOPB meets ATCA / AdvancedTCA payload-board hot-swap requirements with its integrated charge pump (drives external N-FET gate above VIN), programmable current limit, and Power-Good output for backplane management. The latch-off variant is preferred for ATCA FRU (field-replaceable unit) cards where manual service intervention is expected on fault. According to TI reference designs, the LM5069 also supports the IPMI / management bus interaction via PGOOD. Compared to the LM5060, the LM5069's power-limiting foldback is essential for ATCA bulk-capacitor charging without MOSFET SOA failure.
Recomendado
48V Step-Down / Point-of-Load Pre-Regulator
The LM5069MM-1/NOPB can serve as a 48V pre-regulator / hot-swap front-end for downstream 48V-to-low-voltage POL converters, protecting the bus from inrush and providing a circuit-breaker function on overcurrent. The 80V operating range provides substantial headroom above 48V nominal, while the latch-off behavior protects downstream converters from repeated fault events. According to TI datasheet, the part's wide VIN range and small VSSOP-10 footprint make it ideal as a companion to high-density 48V POL converters in space-constrained designs. Compared to discrete solutions, the LM5069 reduces BOM and improves fault repeatability.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para LM5069MM-1/NOPB — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | LM5069MM-2/NOPB | LM5069MMX-1/NOPB | LM5069MMX-2/NOPB | LM5060MM/NOPB | MAX5977AETE+ |
|---|---|---|---|---|---|---|
| Package | VSSOP-10 (DGS) | VSSOP-10 (DGS) - same | VSSOP-10 (DGS) - same | VSSOP-10 (DGS) - same | VSSOP-10 (DGS) - same | TQFN-16 - different |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Maxim Integrated |
| Operating Voltage | 9V to 80V | 9V to 80V | 9V to 80V | 9V to 80V | 5.5V to 65V | 9V to 80V |
| Fault Response | Latch-off (-1) | Auto-restart (-2) | Latch-off (-1) | Auto-restart (-2) | Latch-off | Latch-off |
| Power Limiting / Foldback | Yes | Yes | Yes | Yes | No | Yes |
| External FET | External N-MOSFET | External N-MOSFET | External N-MOSFET | External N-MOSFET | External N-MOSFET | External N-MOSFET |
| Channels | 1 | 1 | 1 | 1 | 1 | 1 |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C |
| Automotive (AEC-Q100) | No (industrial) | No | No | No | No | No |
Principais diferenciais
- Integrated power limiting / foldback during inrush (vs LM5060MM/NOPB)
- Latch-off fault response for safety-critical applications (vs LM5069MM-2/NOPB)
- Wide 9V-to-80V operating range (vs LM5060MM/NOPB)
- Programmable OVLO for transient rejection (vs MAX5977AETE+)
Notas de projeto
The LM5069MM-1/NOPB controls an external N-MOSFET and does not include an integrated pass element; the load current capability is set by the external RSENSE resistor (R = V_SENSE / I_limit) and the SOA of the chosen MOSFET. For a 10A load at VIN=48V, an N-FET with Rds(on) of 10 mOhm dissipates 1W steady-state. Use a FET with sufficient SOA margin to handle inrush at minimum VIN where (VDS x ID) is highest. The internal charge pump typically sources 12uA to drive the GATE pin, so gate-drive rise time is dominated by the external CGATE capacitor.
Place the RSENSE resistor as close to the SENSE and GND pins as possible to minimize parasitic inductance and avoid false current-limit trips. The TIMER capacitor should be referenced to GND with short trace length. Use a Kelvin connection to RSENSE for accurate current sensing. The exposed pad (if present in the DGS package variant) should be soldered to a copper pour for thermal dissipation, although the LM5069 itself dissipates only tens of milliwatts. According to TI layout guidelines, keep the GATE trace away from the DRAIN trace to avoid capacitive coupling that could re-trigger the GATE during fault recovery.
Do not omit the TIMER capacitor - without it, the LM5069 may not latch off correctly on sustained overcurrent. The UVLO resistor divider must set the threshold above the minimum operating voltage (9V) to avoid start-up oscillation; per TI datasheet, the EN/UVLO pin has a precise reference and hysteresis. The PLIM resistor sets the power-limit threshold and should be chosen for the specific (VIN - VOUT) x I_load profile of the application. Do not exceed 100V on VIN even transiently - the absolute maximum rating has no margin. Finally, the LM5069-1 latch-off variant requires manual reset (power cycle or EN toggle), which must be considered in system-level fault-recovery design.
Estimated: at VIN=80V, VOUT=5V, I_LOAD=1A steady state, the external N-MOSFET dissipates approximately (80-5) x 1 = 75W if not fully enhanced, but with the LM5069 driving the GATE fully on at 80V VIN, dissipation drops to Rds(on) x I^2. The LM5069 controller itself draws 1-3 mA quiescent current, dissipating under 250 mW at 80V. Designers should verify FET SOA at maximum VIN and minimum load for worst-case inrush; use a FET rated for at least 100V VDS with safe operating area curves that cover the inrush envelope. The VSSOP-10 package's small thermal pad limits the controller's own dissipation - do not expect the LM5069 itself to handle significant power.
Informações de conformidade
RoHS compliant and lead-free per NOPB suffix on TI part number. Not AEC-Q100 qualified - industrial/telecom grade only; for automotive, see LM5069-Q1 family.
