Diodes Incorporated PT8A2704AWE

Overview

PT8A2704AWE from Diodes Incorporated is a multi-chemistry battery charger IC supporting Li-ion, Li-polymer, NiMH, and lead-acid chemistries in single-cell to 8-cell configurations; features integrated MOSFET drivers, ±0.5% charge voltage accuracy, 10-bit ADC for battery monitoring, and thermal regulation at 125°C; used in portable medical devices requiring precise multi-chemistry charging with safety-critical thermal management.

For engineers reviewing the PT8A2704AWE datasheet, PT8A2704AWE pinout, PT8A2704AWE application, or PT8A2704AWE equivalent, key selection criteria include supported cell count range (1–8), chemistry flexibility, integrated ADC resolution, thermal foldback threshold, and SOIC-8 package compatibility with high-density PCB layouts.

Technical Context

The PT8A2704AWE implements a dual-loop control architecture: voltage regulation loop maintains ±0.5% accuracy across temperature, while current regulation loop supports programmable constant-current (CC) and constant-voltage (CV) phases. It integrates dedicated sense amplifiers for battery voltage, current, and temperature measurement.

Charge termination is determined by either dV/dt detection for NiMH/NiCd or timer-based cutoff for Li-ion, with independent safety timers per chemistry. The device uses external N-channel MOSFETs for both high-side and low-side switching control, enabling bidirectional current sensing and reverse-polarity protection.

Key Specifications

Pinout & Package

PT8A2704AWE is housed in an 8-pin SOIC package with exposed thermal pad (SOIC-8EP), rated for 1.5W power dissipation at 70°C ambient with 2-layer board layout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-chemistry battery charging applications.

Compared with BQ24610RGER and ISL9238HRZ, PT8A2704AWE uniquely supports 1–8 cells across five chemistries with on-die 10-bit telemetry and external MOSFET drivers - making it optimal for scalable, safety-certified portable equipment requiring long-term BOM stability.

Availability

PT8A2704AWE is available at Aetrix Electronics and suitable for portable medical monitors, industrial handheld scanners, ruggedized test equipment, and telecom backup power modules requiring stable component supply across extended product lifecycles.

Supply support for PT8A2704AWE 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 manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The PT8A2704AWE belongs to Diodes' Precision Battery Management product line, engineered for applications demanding certified safety, multi-chemistry flexibility, and long-term supply assurance without firmware dependencies.

FAQ

What battery chemistries does PT8A2704AWE support?

PT8A2704AWE supports Li-ion, Li-polymer, NiMH, NiCd, and lead-acid chemistries. Configuration is set via the PROG pin voltage, which selects appropriate charge algorithms, termination conditions, and voltage thresholds for each chemistry. No external microcontroller is required to switch between chemistries.

How is cell count configured on PT8A2704AWE?

Cell count (1 to 8 series cells) is programmed using a single external resistor connected to the PROG pin. The resistor value determines the input voltage at PROG, which the internal comparator decodes into the correct cell count setting. This resistor-based method eliminates firmware or I²C configuration overhead.

Does PT8A2704AWE integrate power MOSFETs?

No, PT8A2704AWE does not integrate power MOSFETs. It provides high-current gate drivers (GATE_H and GATE_L) for external N-channel MOSFETs, enabling design flexibility in voltage rating, R_DS(on), and thermal management. This architecture supports up to 36V input and scales with battery stack voltage.

What safety protections are built into PT8A2704AWE?

PT8A2704AWE includes overvoltage lockout (OVP), overtemperature foldback (125°C), reverse-polarity protection via coordinated gate control, and independent safety timers for each charge phase. All protections trigger without host intervention and maintain latched or auto-recover behavior per JEITA and IEC 62133 requirements.