AP61102Z6-7 - 1A Synchronous Buck Converter, 2.3-5.5V | Diodes
Teilenummer: AP61102Z6-7 ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.45 | $0,45 |
| 10 | $0.39 | $3,90 |
| 100 | $0.31 | $31,00 |
| 500 | $0.26 | $130,00 |
| 1.000 | $0.22 | $220,00 |
| 3.000 | $0.18 | $540,00 |
AP61102Z6-7 Übersicht
A buck converter (step-down switching regulator) is a type of DC-DC converter that uses a controlled switch, an inductor, and output capacitance to deliver a lower DC voltage from a higher DC input with high efficiency. Synchronous buck converters replace the conventional Schottky rectifier with a low-side MOSFET, reducing conduction loss and improving thermal performance at moderate-to-high load currents. The AP61102 belongs to the broader hierarchy of DC-DC converters -> switching regulators -> power management ICs, sitting alongside LDOs and charge pumps in modern POL architectures.
Key features include a fixed 2.2 MHz switching frequency that allows the use of small inductors and ceramic output capacitors, a Constant On-Time (COT) control architecture that delivers fast transient response, low quiescent current suitable for always-on and partial-power applications, internal soft-start, Power-Good (PG) indication, and full protection with over-current, over-voltage, short-circuit, and thermal shutdown. The 2.2 MHz switching frequency stays above the AM broadcast band, simplifying EMI filtering.
The AP61102 uses Diodes' proprietary COT control topology, which eliminates the need for an external compensation network. Compared with traditional voltage-mode or current-mode buck regulators, COT delivers faster transient response to load steps and simpler external BOM with typically only an inductor and two ceramic capacitors required.
Typical applications include USB Type-C / 5 V-powered IoT nodes, solid-state drives and storage modules, single-cell Li-ion battery-powered portable electronics, home automation gateways, 3.3 V POL rails for low-power MCUs, and wearables that need a small footprint and high efficiency across light and heavy loads.
When designing, keep the input capacitor within 2 mm of the VIN and PGND pins to suppress switching noise, select a 1 µH to 2.2 µH shielded inductor with low DCR for best efficiency, and reserve PG for sequencing or fault monitoring in multi-rail systems. The 6-pin SOT-563 footprint is among the smallest 1 A buck footprints available.
This page combines verified distributor pricing, drop-in same-package alternatives, and practical PCB design notes not consolidated in the manufacturer datasheet, giving engineers a single reference for sourcing and second-source decisions.
Drop-in-Alternativen für AP61102Z6-7 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
AP61100Z6-7
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
AP61102QZ6-7
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
AP61102Z6-7
✅ Drop-In✓ Auf Lager
$0.18 / Stück
Datenblatt ansehen →AP61102Z6
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
AP61100QZ6-7
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TPS62840YBGR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
AP61102Z6-7 Grenzwerte & elektrische Eigenschaften
| Topologie | Synchronous Buck (Step-Down) |
| Eingangsspannungsbereich | 2.3 V to 5.5 V |
| Ausgangsspannungsbereich | 0.6 V to 3.6 V (adjustable) |
| Maximaler Ausgangsstrom | 1 A |
| Schaltfrequenz | 2.2 MHz (typical, fixed) |
| High-Side MOSFET Rds(on) | 110 mΩ |
| Low-Side MOSFET Rds(on) | 80 mΩ |
| Control Architecture | Constant On-Time (COT) |
| Ausgangstyp | Adjustable (positive) |
| Power-Good (PG) Output | Yes (open-drain) |
| Betriebstemperatur | -40 °C to +85 °C |
| Gehäuse | SOT-563 / SOT-666, 6-pin |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
AP61102Z6-7 Pin-Konfiguration
| Pin 1 | PGND — Power ground return for the low-side MOSFET and switching node |
| Pin 2 | VIN — Input supply voltage (2.3 V to 5.5 V) |
| Pin 3 | EN — Enable input (active-high logic input) |
| Pin 4 | FB — Feedback voltage input (0.6 V reference, connect to output via divider) |
| Pin 5 | PG — Power-Good open-drain output (asserts when VOUT reaches regulation) |
| Pin 6 | SW — Switch node - connect to external inductor |
Typische Anwendungen
AP61102Z6-7 ist geeignet für 7 Anwendungs: USB Type-C 5V Powered IoT Node, Solid-State Drive (SSD) Power Management, Single-Cell Li-ion Portable Electronics, Home Automation Gateway / Sensor Hub, FPGA / SoC Point-of-Load (POL) Rail, Wearable Health / Fitness Device, Wireless Sensor / Module Power.
USB Type-C 5V Powered IoT Node
The AP61102Z6-7 is well matched to USB 5 V powered IoT nodes because its 2.3–5.5 V input range directly handles USB 5 V without upstream regulation. The device's integrated 110 mΩ / 80 mΩ MOSFETs deliver >90 % efficiency at 1 A load, minimizing thermal rise on the small SOT-563 footprint. Placed near the USB-C connector, it generates the 3.3 V rail that powers an MCU plus Wi-Fi/BLE SoC from a single 5 V source, while its 2.2 MHz switching frequency stays above the AM band for clean EMI.
Empfohlen
Solid-State Drive (SSD) Power Management
Inside SSDs, the AP61102Z6-7 provides the 1.0–1.2 V NAND interface rail and a 3.3 V controller rail from the 5 V host supply. The 2.2 MHz fixed switching frequency supports small chip inductors needed for the compact SSD PCB. The Power-Good output ties to the SSD MCU to disable writes during under-voltage events, while the integrated protection (OCP, OVP, OTP) guards the converter against the hot-plug transients typical of USB and SATA interfaces.
Empfohlen
Single-Cell Li-ion Portable Electronics
Battery-powered wearables and portable devices benefit from the AP61102Z6-7's 2.3–5.5 V input range, which covers the full single-cell Li-ion discharge curve (3.0 V–4.2 V). With its low-Iq COT control, the converter draws minimal current during sleep states, preserving battery life. The 1 A output capability handles radios, sensors, and small displays, while the SOT-563 footprint occupies under 3 mm² of PCB - critical for thin wearables and hearables.
Empfohlen
Home Automation Gateway / Sensor Hub
Home automation gateways typically combine a mains-derived 5 V supply with multiple lower-voltage sub-systems. The AP61102Z6-7 steps 5 V down to 3.3 V for the gateway MCU and to 1.8 V for sensors, all from the same compact footprint. Its high-side 110 mΩ / low-side 80 mΩ MOSFETs minimize voltage drop at full 1 A load, and the Power-Good output enables clean sequencing of downstream subsystems. Operating reliably from -40 °C to +85 °C, the device fits unheated indoor enclosures and outdoor sensor hubs alike.
Empfohlen
FPGA / SoC Point-of-Load (POL) Rail
Low-cost FPGAs and SoCs require dedicated POL rails often below 1.8 V. The AP61102Z6-7 supports adjustable outputs from 0.6 V to 3.6 V, making it ideal for generating core, I/O, and auxiliary rails for entry-level Cyclone, Artix, and similar low-power FPGAs. The Power-Good output feeds the FPGA's PG pin so the FPGA holds in reset until the rail is stable, and the small SOT-563 footprint keeps the POL footprint under 3 mm², freeing board area for the FPGA itself.
Empfohlen
Wearable Health / Fitness Device
Wearables demand small footprint, high efficiency, and reliable operation from a small Li-ion or Li-poly cell. The AP61102Z6-7's 6-pin SOT-563 footprint (under 3 mm² total area) and 2.2 MHz switching frequency support a complete buck converter using a 1 µH chip inductor and two small ceramic capacitors. Its low-Iq COT control preserves standby current, extending battery life in always-connected fitness bands. The wide input range supports direct connection to the Li-ion cell across its entire discharge profile.
Empfohlen
Wireless Sensor / Module Power
Wireless modules (Wi-Fi, BLE, LoRa) typically run from 3.3 V at peak currents of 300 mA to 700 mA during transmit. The AP61102Z6-7 supplies up to 1 A from a 5 V or 3.7 V Li-ion source with >90 % efficiency, leaving thermal headroom for the adjacent RF module. The Power-Good output can enable the radio only after the rail is stable, reducing inrush into the antenna network. The fixed 2.2 MHz switching frequency avoids interference with the 2.4 GHz ISM band when paired with a properly filtered input cap.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für AP61102Z6-7 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | AP61100Z6-7 | AP61102QZ6-7 | AP61102Z6 | AP61100QZ6-7 | TPS62840YBGR |
|---|---|---|---|---|---|---|
| Brand | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Texas Instruments |
| Package | SOT-563 (6-pin) | SOT-563 (6-pin) - same | SOT-563 (6-pin) - same | SOT-563 (6-pin) - same | SOT-563 (6-pin) - same | DSBGA-6 - different |
| Input Voltage Range | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V (wider) |
| Maximum Output Current | 1 A | 1 A | 1 A | 1 A | 1 A | 0.75 A |
| Switching Frequency | 2.2 MHz | 2.2 MHz | 2.2 MHz | 2.2 MHz | 2.2 MHz | 2.2 MHz |
| Power-Good (PG) Output | Yes | No | Yes | Yes | No | Yes |
| AEC-Q100 Qualified | No | No | Yes | No | Yes | No |
| Approx Unit Price (1 pc, USD) | $0.45 (as of 2026-10-06) | ~$0.38 | ~$0.55 | ~$0.40 | ~$0.50 | ~$0.95 |
Wichtigste Unterscheidungsmerkmale
- Industry-leading 6-pin SOT-563 1 A buck footprint (vs. TPS62840YBGR (TI, 6-pin WCSP/DSBGA))
- Power-Good (PG) output included as standard (vs. AP61100Z6-7 (Diodes, no PG))
- Pin-compatible AEC-Q100 automotive option (vs. TPS62840YBGR (no AEC-Q100))
Designhinweise
Place the input ceramic capacitor within 2 mm of the VIN and PGND pins of the AP61102Z6-7 to minimize the high-frequency switching loop. Recommended cap is 10 µF X7R 10 V 0805 (e.g. Murata GRM21BR71A106KE43). A 0.1 µF 0402 X7R placed in parallel suppresses high-frequency noise above 10 MHz.
Estimated: at VIN = 5 V, VOUT = 3.3 V, IOUT = 1 A, the converter efficiency is ~94%, dissipating ~0.2 W internally. With the SOT-563 theta_JA typically ~150 °C/W on a 1-oz 2-layer 1 square inch copper pour, junction temperature increases ~30 °C above ambient - safe up to ~85 °C ambient. Reduce VIN or improve copper pour for higher temperature operation.
Keep the SW trace short and wide, and place the inductor close to the SW pin to minimize radiated EMI. Use a 4-layer PCB with a solid ground plane for best EMI performance; on 2-layer boards, dedicate the bottom layer to ground. The feedback (FB) trace should be routed away from the SW node and connect directly to the top of the output capacitor to avoid load regulation errors.
Do not use an inductor with DCR above ~50 mΩ - efficiency drops >5% at full load. Do not omit the bootstrap capacitor on VIN if required by the eval board schematic. Do not pull FB above VOUT - feedback traces near the SW node will inject switching noise and cause output ripple. Always read the AP61102Z6-EVM user guide before finalizing the BOM.
Compliance-Informationen
RoHS and lead-free per DigiKey product page. AEC-Q100 not qualified; the -Q1 suffix variant (AP61102QZ6-7) is the automotive-qualified version.
