Diodes Incorporated AP9221SA-CC-HAC-7

Overview

AP9221SA-CC-HAC-7 from Diodes Incorporated is a single-chip Li+ battery protection IC integrating dual N-channel MOSFETs (common-drain configuration) in a U-DFN2030-6 (Type C) package. It delivers overcharge (4.200 V), overdischarge (2.750 V), discharge/charge overcurrent (0.055 V / −0.113 V), short-circuit (0.276 V), and overvoltage charger (8.0 V) protection for 1-cell lithium-ion packs, with auto-wake-up functionality enabled.

For engineers reviewing the AP9221SA-CC-HAC-7 datasheet, AP9221SA-CC-HAC-7 pinout, AP9221SA-CC-HAC-7 application, or AP9221SA-CC-HAC-7 equivalent, this device supports precise voltage monitoring, fixed delay timing (e.g., 1000 ms overcharge detection), ultra-low quiescent current (3.0 µA typ. in normal mode), and 0V battery charge enable - critical for portable medical devices, power tools, and wearables requiring fail-safe battery management.

Technical Context

The AP9221SA-CC-HAC-7 implements independent analog comparators for six protection thresholds (VCU, VCL, VDL, VDU, VDOC, VCOC, VSHORT, VOVCHG), each with factory-trimmed accuracy and ±20% delay tolerance. Its logic circuit controls two integrated MOSFETs via level-shifted gate drivers, enabling bidirectional current blocking without external FETs.

It features dual internal resistors (RVMD = 300 kΩ typ., RVMS = 30 kΩ typ.) for VM-sense biasing, supports auto-wake-up from overdischarge by battery voltage recovery alone, and includes a dedicated overvoltage charger detector (8.0 V fixed threshold) with immediate response - no delay circuitry applied.

Key Specifications

Pinout & Package

Package: U-DFN2030-6 (Type C), 2.0 mm × 3.0 mm × 0.55 mm, exposed thermal pad (EP), RoHS-compliant, halogen-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar battery protection applications.

Compared with R5640T275CD-TR and BD8630GUL, the AP9221SA-CC-HAC-7 uniquely integrates MOSFETs, supports 0V battery charging, and provides dedicated overvoltage charger detection - delivering lower system-level component count, faster short-circuit response, and enhanced safety for space-constrained Li+ applications.

Availability

AP9221SA-CC-HAC-7 is available at Aetrix Electronics and suitable for portable power tools, medical wearables, Bluetooth headsets, and smart home sensors requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.

Supply support for AP9221SA-CC-HAC-7 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

Diodes Incorporated is a global semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and protection applications.

The AP9221 belongs to Diodes' battery protection IC product line, engineered specifically for high-reliability, space-constrained 1-cell Li+ battery packs in consumer, industrial, and medical portable electronics.

FAQ

What is the function of the VM pin in the AP9221SA-CC-HAC-7?

The VM pin serves as the bidirectional current-sense input: it monitors voltage drop across the external sense resistor (R2) to detect charge/discharge direction and magnitude. Internally, it connects to RVMD (pull-up to VDD) during overdischarge and RVMS (pull-down to VSS) during overcurrent/short events, enabling automatic state-based biasing without external switches.

Does the AP9221SA-CC-HAC-7 support overvoltage protection for the charger input?

Yes - it includes a dedicated overvoltage charger detection circuit with a fixed 8.0 V threshold (±2 V) between VDD and VM pins. When exceeded, the charging MOSFET shuts off immediately with no delay; release occurs at 7.3 V, also with zero delay, providing direct hardware-level protection against faulty or mismatched chargers.

How does the auto-wake-up feature operate during overdischarge recovery?

In auto-wake-up mode, the AP9221SA-CC-HAC-7 exits overdischarge status when battery voltage rises to ≥2.950 V (VDU) and remains there for ≥2.4 ms (tDLR). No charger connection is required - recovery is triggered solely by passive battery voltage recovery, enabling autonomous restart in devices like wearables left unused for extended periods.

What is the maximum continuous current the integrated MOSFETs can handle?

The integrated dual N-MOSFETs support 2.8 A continuous drain current at +25°C (TA) with VGS = 4.5 V, derating to 2.2 A at +70°C. This is validated per JEDEC High-K board conditions and assumes proper PCB thermal design using the exposed EP pad for heat dissipation.