MM3474P04VBE - 3-5 Cell Li-Ion Battery Protection IC | Mitsumi
N.º da peça: MM3474P04VBE ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.4125 | $2,41 |
| 10 | $2.17 | $21,70 |
| 100 | $1.69 | $169,00 |
| 500 | $1.35 | $675,00 |
| 1.000 | $1.08 | $1.080,00 |
MM3474P04VBE Visão geral
A battery protection IC (sometimes called a battery management protection IC, or PCM IC) is a dedicated analog/mixed-signal device that sits between a lithium-ion cell stack and the system load/charger. Its job is to monitor each cell voltage and the pack current, and to disconnect the charge/discharge MOSFETs whenever any parameter drifts outside a safe window. The MM3474 belongs to the broader hierarchy of power management ICs (PMIC), and specifically to the battery management sub-category that includes standalone protectors, monitor/gauging ICs, and chargers. Multi-cell protectors like the MM3474 are the analog front-end of every modern lithium battery pack.
Key features include programmable overcharge detection in the 4.x V per-cell range, fixed overdischarge detection, charge/discharge overcurrent detection, short-circuit protection with sub-millisecond response, low quiescent current, and built-in cascade logic that lets a master MM3474 hand off higher cell-stack monitoring to a slave device. The TSOP-20D (5.0 mm x 6.4 mm) package with exposed thermal considerations is suited to space-constrained battery management boards inside 10.8 V, 14.4 V, and 18 V lithium packs.
The MM3474P04VBE uses a precision bandgap reference and analog comparators to evaluate each cell voltage against internal thresholds, then drives an external dual-MOSFET gate path through CO and DO pins. The SEL pin logic selects 3-, 4-, or 5-cell operation; cascade wiring adds the V and C pins to inter-stack communication. The result is a single-IC protection solution that replaces a discrete op-amp + supervisor + reference design.
Typical applications include power tool battery packs (3S-5S), e-bike and e-scooter packs, laptop battery packs, portable UPS and energy-storage packs, and 18 V / 20 V max cordless-tool platforms. It is also used in medical-cart battery packs and select industrial 24 V Li-ion stacks.
A key design consideration is the external MOSFET selection - the CO/DO pins sink gate charge and must be sized for the pack's continuous discharge current. Designers should also follow Mitsumi's cascade wiring diagram when stacking beyond 5S, and place the IC close to the cell-tap resistors to minimize ground-loop noise on the sense lines.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes drawn from the MM3474 series specifications document rather than the bare pinout.
Alternativas drop-in para MM3474P04VBE — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MM3474P03VBE
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MM3474P02VBE
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MM3474P04VBExxx
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MM3474P04VBE Especificações
| Manufacturer | Mitsumi (MinebeaMitsumi) |
| Product Type | Battery Protection IC |
| Battery Chemistry | Lithium-Ion / Lithium-Polymer |
| Supported Cells (Series) | 3S / 4S / 5S, cascade for 6+ |
| Cell Count Selection | SEL pin logic (High / Low) |
| Encapsulamento | TSOP-20D |
| Tipo de montagem | Surface Mount |
| Protection Functions | Overcharge, Overdischarge, Overcurrent (charge & discharge), Short Circuit |
| Cascade Support | Yes (via V and C pins for >=6S packs) |
| Output Drive (CO, DO) | CMOS output to external MOSFET gates |
| Status RoHS | Compliant (per LCSC datasheet PDF) |
Configuração de pinos do MM3474P04VBE
| Pino 1 | VCC — Power supply from pack top (highest cell positive terminal) |
| Pino 2 | VC1 — Cell 1 positive terminal (pack top) |
| Pino 3 | VC2 — Cell 2 positive terminal |
| Pino 4 | VC3 — Cell 3 positive terminal |
| Pino 5 | VC4 — Cell 4 positive terminal |
| Pino 6 | VC5 — Cell 5 positive terminal (highest sense point for 5S) |
| Pino 7 | SEL — Cell count selection: High / Low selects 3S / 4S / 5S per datasheet |
| Pino 8 | GND — Ground (cell 1 negative terminal reference) |
| Pino 9 | NC — Not connected (per datasheet) |
| Pino 10 | V — Cascade inter-stack communication V terminal (master/slave) |
| Pino 11 | C — Cascade inter-stack communication C terminal |
| Pino 12 | TEST — Factory test pin (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 | DO — Discharge MOSFET gate drive output (CMOS) |
| Pino 17 | CO — Charge MOSFET gate drive output (CMOS) |
| Pino 18 | V- — Charge / discharge current sense (pack negative via sense resistor) |
| Pino 19 | NC — Not connected (per datasheet) |
| Pino 20 | NC — Not connected (per datasheet) |
Aplicações típicas
MM3474P04VBE é adequado para 6 aplicaçãos: Power-Tool Battery Packs (3S-5S Li-Ion), E-Bike and E-Scooter Li-Ion Packs (10S-13S), Laptop Battery Packs (3S-4S Li-Poly), Portable UPS and Energy-Storage Packs, Medical-Cart Battery Packs, Industrial 24 V Li-Ion Modules.
Power-Tool Battery Packs (3S-5S Li-Ion)
The MM3474P04VBE fits 18 V / 20 V max cordless-tool packs that use 5S1P or 4S2P 18650/21700 cells because it directly monitors 3-5 series cells with cascade support for higher stacks. Its integrated overcharge, overdischarge, and discharge overcurrent detection allows the design to omit a discrete supervisor, and the SEL pin lets the same PCB handle 3S, 4S, and 5S SKUs without rework. Compared to a discrete op-amp + supervisor front end, the MM3474 shrinks the protection board footprint to roughly 50% while still driving external N-channel dual-MOSFETs sized for the 20-30 A continuous discharge of typical drill and impact-driver packs.
Recomendado
E-Bike and E-Scooter Li-Ion Packs (10S-13S)
The MM3474P04VBE protects 36 V / 48 V e-bike battery packs by cascading two units through the V and C inter-stack pins to monitor 10S or 13S Li-ion stacks - a feature explicitly described in the MM3474 series specifications document. The TSOP-20D package keeps the protection board slim enough to fit inside a downtube-mounted pack enclosure, and the dual-MOSFET gate drives (CO/DO) handle the 15-25 A continuous discharge of typical 250-500 W pedal-assist motors. Compared to single-IC protectors without cascade support, the MM3474 eliminates the need for a separate slave monitor IC, lowering BOM cost by roughly one part.
Recomendado
Laptop Battery Packs (3S-4S Li-Poly)
The MM3474P04VBE protects 3S or 4S Li-poly laptop batteries used in replacement and upgrade markets where the standard 2S-3S pack configuration is no longer sufficient. Its overcharge threshold accuracy supports 4.2 V/cell charging without nuisance trips, while the overdischarge cutoff prevents cell damage at the deep-discharge end of the runtime curve. The SEL pin lets OEM pack builders reuse one protection layout across 3S and 4S SKUs, reducing qualification cost. Designers typically pair the MM3474 with two small N-channel MOSFETs sized for the 4-6 A discharge typical of a 45-65 Wh laptop pack.
Recomendado
Portable UPS and Energy-Storage Packs
The MM3474P04VBE's cascade capability and wide cell-count flexibility make it well suited to portable UPS and small energy-storage packs that use 12 V or 24 V Li-ion stacks (3S-7S with cascade). Its short-circuit detection with sub-millisecond response protects the cells from catastrophic events during inverter switching transients, and the CMOS CO/DO outputs drive the high-current N-channel MOSFETs required for 30-50 A inverter surge loads. The TSOP-20D footprint and low quiescent current help designers meet standby-power targets for UL and IEC 62619 storage safety standards.
Recomendado
Medical-Cart Battery Packs
The MM3474P04VBE protects hospital-cart battery packs (typically 3S or 4S Li-ion) where reliable overcharge, overdischarge, and overcurrent protection is required by IEC 60601-1 third-edition risk-management analysis for medical electrical equipment. Its TSOP-20D package supports the compact protection board layouts required inside the cart base, and the SEL pin enables a single PCB variant to qualify across multiple cart SKUs. Compared to a discrete protection circuit, the MM3474 reduces the analog component count by 6-10 parts and shortens EMC qualification cycles by removing potential noise sources on the sense traces.
Recomendado
Industrial 24 V Li-Ion Modules
The MM3474P04VBE fits industrial 24 V Li-ion modules built from 7S cells by cascading two devices across the 7-cell string, while also serving 6S packs through a single MM3474. The SEL pin allows one BOM to cover 3S, 4S, 5S, 6S, and 7S product variants, and the CO/DO gate drives handle the 20-30 A continuous currents drawn by 24 V industrial sensors, controllers, and motor-driver boards. Designers typically pair the IC with low-Rds(on) dual N-channel MOSFETs and add a PTC thermistor for redundant thermal protection in harsher industrial enclosures.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MM3474P04VBE — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MM3474P03VBE | MM3474P02VBE | MM3474P04VBExxx |
|---|---|---|---|---|
| Package | TSOP-20D | TSOP-20D - same | TSOP-20D - same | TSOP-20D - same |
| Brand | Mitsumi (MinebeaMitsumi) | Mitsumi - same | Mitsumi - same | Mitsumi - same |
| Battery Chemistry | Li-Ion / Li-Polymer | Li-Ion / Li-Polymer | Li-Ion / Li-Polymer | Li-Ion / Li-Polymer |
| Supported Cells (Series) | 3S / 4S / 5S + cascade | 3S / 4S / 5S + cascade | 3S / 4S / 5S + cascade | 3S / 4S / 5S + cascade |
| Cell Count Selection | SEL pin | SEL pin | SEL pin | SEL pin |
| Cascade Support | Yes (V/C pins) | Yes (V/C pins) | Yes (V/C pins) | Yes (V/C pins) |
| Gate Drive Outputs | CO (charge) + DO (discharge) | CO + DO | CO + DO | CO + DO |
Principais diferenciais
- Cascade support built-in for 6+ cell packs (vs MM3474P03VBE (single-cell-count SKUs))
- SEL pin allows one PCB across 3S/4S/5S SKUs (vs Fixed-cell-count protectors)
- TSOP-20D slim profile for tight enclosures (vs Larger SSOP or QFN protector packages)
Notas de projeto
Estimated: The MM3474P04VBE consumes a small quiescent current from the pack's top cell through the VCC pin. Total 24/7 standby draw for a 5S pack including the IC plus external resistor dividers is typically in the 5-20 uA range. For a 5 Ah pack, this translates to roughly 1-3% capacity loss per month during storage, so designers should minimize the resistor divider values while still meeting accuracy requirements.
The TSOP-20D package dissipates only milliwatts under normal operation since the CO/DO outputs drive MOSFET gates, not load current. However, in a sustained short-circuit condition the external N-channel dual-MOSFETs can dissipate 10-30 W before the IC cuts off, so thermal layout should keep the MOSFET copper pour on a separate thermally-isolated island from the MM3474 ground pour. Place the IC at the cool end of the board opposite the MOSFETs.
Place the MM3474P04VBE close to the cell-tap resistor ladder (VC1-VCn) to minimize ground-loop noise on the sense traces. Use 100 kohm - 1 Mohm dividers between cell taps to keep quiescent current low while maintaining threshold accuracy. Keep CO/DO traces short and direct to the MOSFET gates, and add a 100 nF decoupling capacitor on VCC adjacent to the IC pin.
Do not omit the external N-channel dual-MOSFETs - the MM3474P04VBE only drives gate signals, it does not switch pack current itself. Also, when cascading for 6+ cell packs, ensure the V and C pins are wired exactly per the MM3474 series specifications document cascade diagram; reversed wiring can cause false protection trips during charging. Finally, do not exceed the absolute maximum VCC rating - the highest-cell VC pin must be below the IC's VCC max.
Informações de conformidade
RoHS compliance confirmed by LCSC product listing (C3682862). Halogen-free status not stated by manufacturer in available data. No AEC-Q100 automotive qualification - this is a commercial-grade protector.
