Asahi Kasei Microdevices/AKM AP4410AECHJ

Overview

AP4410AECHJ from Asahi Kasei Microdevices is a dual-channel ultra-low-power voltage detector IC with integrated P- and N-channel MOSFETs, ±35 mV detection accuracy, 0.026 μA typical current per channel, and 20-pin WLCSP (1.955×1.555 mm) packaging. It functions as a programmable load switch for battery monitoring and overcharge/discharge protection in wearable and energy-harvesting systems.

For engineers reviewing the AP4410AECHJ datasheet, AP4410AECHJ pinout, AP4410AECHJ application, or AP4410AECHJ equivalent, this device supports independent polarity control per channel, dual detection thresholds (1.8–2.7 V "High", 1.7–2.65 V "Low"), sub-500 μs response time, and on-chip MOSFETs with 1 Ω (P-ch) and 2 Ω (N-ch) typical on-resistance - critical for compact, low-quiescent-power power management designs.

Technical Context

The AP4410AECHJ implements two independent voltage detection channels, each with configurable high/low threshold detection (VDETH/VDETL), polarity inversion via POL pins, and enable-controlled MOSFET switching. Its internal CMOS logic operates independently from detection circuitry, allowing flexible load-switch behavior without external components.

Each channel integrates dedicated P-channel and N-channel MOSFETs with body terminals tied to the higher of VDD or PMOSD, enabling bidirectional load control. Detection accuracy remains ±35 mV at 25°C and degrades to ±45 mV at 85°C, while response time is guaranteed ≤500 μs across operating temperature (−40 to +85°C) and supply range (1.3–5.5 V).

Key Specifications

Pinout & Package

AP4410AECHJ uses a 20-pin Wafer-Level Chip Scale Package (WLCSP) measuring 1.955 × 1.555 mm with 0.4 mm pitch. The package is light-sensitive; exposure must be minimized during handling and assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage detector with integrated load switch applications.

Compared with TPS3808G33DBVR and MAX16054ATA+T, AP4410AECHJ uniquely combines dual-channel detection, integrated P/N-MOSFETs, ±35 mV accuracy, and 0.026 μA/channel - making it optimal for space-constrained, battery-critical wearables and energy harvesting nodes where discrete solutions increase failure risk and footprint.

Availability

AP4410AECHJ is available at Aetrix Electronics and suitable for wearable device power management, Li-ion battery overcharge protection, and energy harvesting system supervision requiring stable component supply and long-term manufacturability.

Supply support for AP4410AECHJ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Asahi Kasei Microdevices (AKM) is a Japanese semiconductor company specializing in analog, sensor, and power management ICs, with core expertise in precision detection and low-power design.

The AP4410AECHJ belongs to AKM's ultra-low-power voltage supervisor family, engineered specifically for miniaturized battery-powered systems where integration, accuracy, and nanoampere quiescent current are essential for multi-year operation.

FAQ

What is the detection voltage range supported by the AP4410AECHJ?

The AP4410AECHJ supports factory-configured detection voltage ranges: "High" threshold (VDETH) from 1.8 V to 2.7 V and "Low" threshold (VDETL) from 1.7 V to 2.65 V. These values are fixed per unit at manufacture and cannot be adjusted in-circuit. Each channel operates independently, allowing different thresholds for VIN1 and VIN2 inputs. The AP4410AECHJ achieves ±35 mV accuracy at 25°C, verified per Electrical Characteristics table in the official datasheet.

Does the AP4410AECHJ require external MOSFETs for load switching?

No, the AP4410AECHJ integrates both P-channel and N-channel MOSFETs per channel - eliminating the need for external FETs in most load-switch configurations. Its on-chip P-ch MOSFET has 1 Ω typical R_ON, and N-ch MOSFET has 2 Ω typical R_ON, enabling direct connection to loads up to ~50 mA without derating. External FETs are only needed for higher current or specialized voltage blocking requirements beyond the AP4410AECHJ's 6.5 V absolute maximum rating.

How does polarity control work on the AP4410AECHJ?

Polarity control on the AP4410AECHJ is implemented per channel via POL1 and POL2 pins: logic low selects positive polarity (OUT asserts HIGH when VIN ≥ VDETH), and logic high selects negative polarity (OUT asserts LOW when VIN ≥ VDETH). This allows the same AP4410AECHJ hardware to serve overvoltage lockout or undervoltage reset functions without changing firmware or external logic. The polarity setting takes effect only when the corresponding EN pin is active and VDD exceeds 1.3 V.

What is the maximum operating temperature for the AP4410AECHJ?

The AP4410AECHJ is rated for continuous operation from −40°C to +85°C ambient temperature, as specified in the Recommended Operating Conditions section of its datasheet. At +85°C, detection accuracy degrades to ±45 mV (vs. ±35 mV at 25°C), and response time remains within the 500 μs maximum limit. The device uses a 20-pin WLCSP package with thermal characteristics optimized for thin-profile wearable and IoT applications.

Can the AP4410AECHJ monitor two different voltage domains simultaneously?

Yes, the AP4410AECHJ supports true dual-domain monitoring: VIN1 and VIN2 accept independent input voltages, VDD1 and VDD2 provide separate bias supplies per channel, and POL1/EN1/OUT1 operate independently from POL2/EN2/OUT2. This enables concurrent supervision of, for example, a 3.7 V Li-ion battery (VIN1/VDD1) and a 5 V USB rail (VIN2/VDD2) - with each channel controlling its own load switch and reporting status separately. The AP4410AECHJ's architecture ensures no cross-talk or shared timing dependencies between channels.