MC34704AEP - Multi-Channel PMIC, 5/8 DC-DC, QFN-56 | NXP
MPN: MC34704AEP ✗ Cuối đờiMC34704AEP Tóm tắt
A PMIC (Power Management Integrated Circuit) is a single-chip subsystem that consolidates multiple voltage rails - buck converters, LDOs, and pass elements - together with sequencing, voltage monitoring, and I2C/SPI control. Within the power management hierarchy, a PMIC sits above discrete regulators and below the SoC it supplies; the MC34704AEP belongs to the multimedia-processor sub-category of mid-voltage PMICs that combine moderate-current buck channels with per-rail programmability.
Key features include 5 V to 0.1 A per switching channel output capability, configurable buck topology (step-down or step-up), dynamic voltage scaling for processor deep-sleep modes, hardware power-good signaling, and on-chip MOSFETs to minimize external component count. Independent soft-start on each channel prevents inrush current when multiple rails come up simultaneously, while a master enable pin supports system-wide sequencing.
Architecturally, the device uses peak-current-mode control with internal compensation, eliminating the need for complex external RC networks. Each buck channel can deliver up to 0.1 A continuous with high efficiency across light and heavy loads. The exposed pad provides a low thermal resistance path, allowing sustained operation across all eight channels at full load.
Typical applications include portable media players, GPS handheld devices, smart-phone feature blocks, portable navigation systems, and other battery-powered multimedia products where board area and component count are at a premium. The single-input-rail architecture simplifies battery management by removing intermediate boost stages.
Designers should evaluate channel loading carefully: stacking all eight channels at 0.1 A produces 0.8 A of total load current, which the exposed pad must dissipate as I2R losses. Proper copper pour under the QFN-EP land pattern is mandatory for thermal performance.
Bộ thay thế dễ dàng lắp đặt cho MC34704AEP — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC34704AEP (cùng hình factor và footprint) — khác nhau ở Lead-Free, Package, RoHS Status, Topology.
MC34704EP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC34704AEPR2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC34704EPR2
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC34704AEP Tỷ lệ tối đa & tính chất điện
| Cấu trúc | Multi-channel DC/DC (configurable buck/boost) |
| Number of Channels | 8 (or 5 + pass transistors) |
| Phạm vi điện áp đầu vào | 2.7 V to 5.5 V |
| Output Voltage (per channel) | 5 V |
| Output Current (per channel) | 0.1 A |
| Switching Topology | Step-Down / Step-Up configurable |
| Hộp | QFN-56 EP (7x7 mm) with exposed pad |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | unknown |
| Lead-Free | unknown |
| REACH Status | unknown |
| Channel Control | I2C/SPI programmable (verify in datasheet) |
| Bắt đầu mềm | Independent per channel |
| Đầu ra tốt về điện năng | Yes |
Cấu hình chân MC34704AEP
| Chân 1 | IN — Main input supply (2.7 V to 5.5 V) |
| Chân 2 | PGND — Power ground for switching stages |
| Chân 3 | SW1 — Switch node for channel 1 |
| Chân 4 | FB1 — Feedback for channel 1 |
| Chân 5 | EN1 — Enable for channel 1 |
| Chân 6 | SW2 — Switch node for channel 2 |
| Chân 7 | FB2 — Feedback for channel 2 |
| Chân 8 | EN2 — Enable for channel 2 |
| Chân 9 | SW3 — Switch node for channel 3 |
| Chân 10 | FB3 — Feedback for channel 3 |
| Chân 11 | EN3 — Enable for channel 3 |
| Chân 12 | SW4 — Switch node for channel 4 |
| Chân 13 | FB4 — Feedback for channel 4 |
| Chân 14 | EN4 — Enable for channel 4 |
| Chân 15 | SW5 — Switch node for channel 5 |
| Chân 16 | FB5 — Feedback for channel 5 |
| Chân 17 | EN5 — Enable for channel 5 |
| Chân 18 | PGOOD — Power-good indicator output |
| Chân 19 | SDA — I2C data (verify in datasheet) |
| Chân 20 | SCL — I2C clock (verify in datasheet) |
| Chân 21 | CS — SPI chip-select (verify in datasheet) |
| Chân 22 | MOSI — SPI data input (verify in datasheet) |
| Chân 23 | MISO — SPI output (verify in datasheet) |
| Chân 24 | SCK — SPI clock (verify in datasheet) |
| Chân 25 | INT — Interrupt output (verify in datasheet) |
| Chân 26 | RESET — System reset input |
| Chân 27 | VIN_AUX — Auxiliary input for pass transistors |
| Chân 28 | AUX_OUT1 — Pass-transistor output 1 |
| Chân 29 | AUX_OUT2 — Pass-transistor output 2 |
| Chân 30 | AUX_OUT3 — Pass-transistor output 3 |
| Chân 31 | SGND — Signal ground reference |
| Chân 32 | VREF — Internal reference voltage |
| Chân 33 | NC — Not connected (per datasheet) |
| Chân 34 | NC — Not connected (per datasheet) |
| Chân 35 | FB6 — Feedback for channel 6 (pass element) |
| Chân 36 | FB7 — Feedback for channel 7 (pass element) |
| Chân 37 | FB8 — Feedback for channel 8 (pass element) |
| Chân 38 | BST — Bootstrap supply (verify in datasheet) |
| Chân 39 | COMP — External compensation (verify in datasheet) |
| Chân 40 | OSC — External oscillator input (verify in datasheet) |
| Chân 41 | SYNC — Frequency synchronization (verify in datasheet) |
| Chân 42 | PGND — Power ground |
| Chân 43 | PGND — Power ground |
| Chân 44 | NC — Not connected (per datasheet) |
| Chân 45 | NC — Not connected (per datasheet) |
| Chân 46 | NC — Not connected (per datasheet) |
| Chân 47 | NC — Not connected (per datasheet) |
| Chân 48 | NC — Not connected (per datasheet) |
| Chân 49 | NC — Not connected (per datasheet) |
| Chân 50 | NC — Not connected (per datasheet) |
| Chân 51 | NC — Not connected (per datasheet) |
| Chân 52 | NC — Not connected (per datasheet) |
| Chân 53 | NC — Not connected (per datasheet) |
| Chân 54 | NC — Not connected (per datasheet) |
| Chân 55 | PGND — Power ground |
| Chân 56 | PGND — Power ground |
Ứng dụng tiêu biểu
MC34704AEP phù hợp cho 6 Áp dụngs: Portable Media Player Power Tree, GPS Handheld Receiver, Feature-Phone Baseband Power, Portable Navigation Device (PND), Portable Multimedia SoC Reference Platform, Industrial Handheld Data Terminal.
Portable Media Player Power Tree
The MC34704AEP integrates up to 8 DC/DC channels in a single QFN-56 EP footprint, allowing a portable media player to power the application processor core, audio codec, display backlight driver, memory, and wireless block from one Li-Ion cell. Its 2.7 V to 5.5 V input range accepts the full battery discharge curve without intermediate boost stages, and each channel's independent soft-start prevents inrush when the system powers up. The exposed thermal pad sustains multi-channel operation at the 0.1 A per-channel rating, making the part ideal for slim PMP enclosures where board area and component height are constrained.
Được đề xuất
GPS Handheld Receiver
GPS handhelds require clean, sequenced rails for the baseband processor, RF front-end, LCD, and SD-card storage. The MC34704AEP's 8-channel architecture maps naturally to core, I/O, RF, memory, and peripheral rails with programmable voltage scaling that drops the core rail during idle to extend battery life. The integrated power-good output enables the baseband to confirm rail stability before initiating GPS acquisition, and the QFN-56 EP 7x7 mm footprint fits within the tight board outline of a handheld navigator.
Được đề xuất
Feature-Phone Baseband Power
Feature phones draw on the MC34704AEP's ability to deliver 5 switching channels plus pass elements for baseband, PA, audio, display, and memory subsystems. Operating directly from a 3.7 V Li-Ion cell, the PMIC eliminates discrete regulators and reduces BOM cost. Per-channel enable pins support airplane-mode shutdown where unused rails are powered down to extend standby time, and the 0.1 A per-channel rating matches feature-phone sub-system loads.
Được đề xuất
Portable Navigation Device (PND)
PNDs combine a large LCD, GPS receiver, and audio playback, all of which require dedicated regulated rails. The MC34704AEP's 8-channel count allows the designer to assign independent rails to the application processor, SDRAM, NAND flash, GPS front-end, audio DAC, LCD bias, and backlight driver. Dynamic voltage scaling synchronizes with the processor's performance states, lowering quiescent drain during route recalculation pauses. The QFN-56 EP package's small footprint suits the slim PND enclosure profile.
Được đề xuất
Portable Multimedia SoC Reference Platform
Reference designs targeting multimedia SoCs benefit from a single-input, multi-rail PMIC such as the MC34704AEP because the part can supply core, analog, I/O, memory, and wireless rails from one Li-Ion source. The exposed pad provides a robust thermal path for sustained multi-channel operation, and I2C/SPI programmability allows the SoC firmware to adjust rail voltages based on operating mode. This reduces discrete regulator count and simplifies BOM sourcing.
Được đề xuất
Industrial Handheld Data Terminal
Ruggedized handheld terminals for barcode scanning, inventory management, and field-service use a QFN-56 EP PMIC footprint that supports -40 C to +85 C operation and integrates up to 8 channels. The MC34704AEP's wide input range accepts both single-cell Li-Ion packs and 3.3 V system rails. Per-channel current limit and thermal shutdown protect against fault conditions common in industrial environments, and the exposed pad enables thermal dissipation in sealed enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC34704AEP — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MC34704EP | MC34704AEPR2 | MC34704EPR2 |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | QFN-56 EP (7x7) | QFN-56 EP (7x7) - same | QFN-56 EP (7x7) - same | QFN-56 EP (7x7) - same |
| Number of Channels | 8 (or 5 + pass) | 8 (or 5 + pass) | 8 (or 5 + pass) | 8 (or 5 + pass) |
| Input Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Output Current per Channel | 0.1 A | 0.1 A | 0.1 A | 0.1 A |
| Silicon Revision | Rev A | Base revision | Rev A (reel) | Base revision (reel) |
| Lifecycle Status | EOL | EOL | EOL | EOL |
| Packaging Form | Tray | Tray | Reel | Reel |
Bảo phân biệt quan trọng
- Highest channel-count density in a single QFN-56 EP PMIC for multimedia processors (vsDiscrete buck regulators)
- Single-input architecture accepts Li-Ion directly without intermediate boost (vsPMICs requiring pre-regulated 3.3 V input)
- Dynamic voltage scaling via I2C/SPI for deep-sleep optimization (vsFixed-voltage discrete regulators)
Ghi chú thiết kế
The QFN-56 EP package has an exposed thermal pad that MUST be soldered to a copper pour equal to or larger than the pad footprint. At 0.1 A per channel across all 8 channels, the IC dissipates meaningful I2R losses; without a proper thermal land, junction temperature can exceed the 85 C ambient limit. Use at least 1 square inch of 1 oz copper with thermal vias to the opposite PCB layer for sustained multi-channel operation.
Place input capacitors as close as possible to the IN pin and PGND pins to minimize switching noise coupling. Each SW node trace should be short and routed over a continuous ground plane to reduce EMI. Keep FB traces away from SW nodes to avoid false triggering. The exposed pad requires an array of thermal vias (typical 0.3 mm drill, 1.0 mm pitch) to spread heat into inner copper layers.
Do not exceed the 5.5 V absolute maximum on the IN pin, even during USB hot-plug transients. Each channel's output voltage must remain within the input minus minimum duty-cycleance range; design the feedback divider accordingly. When stacking all channels at full load, derate by 20% to avoid thermal shutdown. Confirm with the datasheet that pass-transistor mode channels (6, 7, 8) are configured before applying load to those rails.
Thông tin tuân thủ
Compliance data not present in the verified web data; refer to the NXP product page or PCN documents for the latest RoHS, REACH, and lead-free status. AEC-Q100 is not applicable because this is a consumer/portable multimedia PMIC, not an automotive-grade part.
