Diodes Incorporated PI5USB1457AZAEX

Overview

PI5USB1457AZAEX from Pericom Semiconductor is a USB Battery Charging Controller IC supporting BC1.2-compliant SDP, CDP, and DCP modes. It enables sleep-and-charge functionality in notebook PCs by actively managing D+/D− signal levels during S3 sleep mode, provides integrated ±4kV IEC61000-4-2 ESD protection on D+/D− pins, and delivers <5Ω typical switch on-resistance for USB 2.0 high-speed signal paths - deployed in OEM laptop charging subsystems.

For engineers reviewing the PI5USB1457AZAEX datasheet, PI5USB1457AZAEX pinout, PI5USB1457AZAEX application, or PI5USB1457AZAEX equivalent, key selection criteria include BC1.2 mode auto-detection logic, mouse/keyboard pass-through capability in Sleep & Charge mode, VDD=4.5–5.5V operation, 8-pin TDFN (ZAE) package compatibility, and INT open-drain wake-up signaling with ~2.1s pulse width.

Technical Context

The PI5USB1457AZAEX implements dual-path USB signal switching (D± ↔ Y±) controlled by SB/ and SEL inputs to support both S0 charging and S3 Sleep & Charge modes. Its internal load-sensing circuitry detects device insertion and automatically selects BC1.2-compliant charging mode (SDP/CDP/DCP) based on D+/D− voltage signature analysis.

It integrates ESD protection rated to ±4kV contact (IEC61000-4-2) on pins 2 (D−) and 3 (D+), features an open-drain INT output (pin 1) for system wake-up events, and maintains <0.57dB insertion loss at 240MHz with >1.35GHz −3dB bandwidth - ensuring USB 2.0 HS signal integrity during enumeration and charging handshakes.

Key Specifications

Pinout & Package

Package: 8-pin TDFN (ZAE), Pb-free & RoHS-compliant, with exposed thermal pad (EP) connected to GND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB battery charging controller applications.

Compared with TPS2514AIDR and FUSB302BMPX, the PI5USB1457AZAEX uniquely combines BC1.2 auto-mode detection, S3 mouse/keyboard pass-through, and hardware-generated INT wake pulses in a single 2×2mm TDFN - making it optimal for space-constrained notebook and dock designs requiring legacy USB-A charging intelligence.

Availability

PI5USB1457AZAEX is available at Aetrix Electronics and suitable for laptop OEMs, industrial docking stations, USB-A charging hubs, and embedded systems requiring stable component supply with long lifecycle support.

Supply support for PI5USB1457AZAEX 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

Pericom Semiconductor (acquired by Diodes Incorporated in 2016) specialized in high-speed interface, timing, and USB signal-integrity solutions for computing and communications markets.

The PI5USB1457 family belongs to Pericom's USB power management product line, engineered specifically to solve host-side charging interoperability challenges in portable computing platforms with strict power-state and signal-integrity requirements.

FAQ

What USB Battery Charging Specification versions does PI5USB1457AZAEX support?

The PI5USB1457AZAEX fully supports USB Battery Charging Specification Rev 1.2 (BC1.2), including SDP, CDP, and DCP modes. It also maintains backward compatibility with BC1.1 and BC1.0, and meets China's YD/T-1591 charger specification - enabling reliable charging for Apple, BlackBerry, and other non-standard devices via configurable detection thresholds.

Does PI5USB1457AZAEX require external components for ESD protection?

No. The device integrates ±4kV contact ESD protection per IEC61000-4-2 on pins 2 (D−) and 3 (D+), eliminating the need for discrete TVS diodes. This integration reduces PCB area, simplifies layout, and ensures consistent protection performance without dependency on external component tolerances or placement parasitics.

How does the INT pin function in Sleep & Charge mode?

In Sleep & Charge mode, the INT pin (pin 1) asserts an active-low open-drain pulse (~2.1s duration) when a logic transition occurs on D+/D−, signaling device plug-in or mode change. An external pull-up resistor is required. This pulse directly triggers the host chipset's wake-from-S3 interrupt line, enabling system-level response without polling.

Can PI5USB1457AZAEX support USB Low-Speed devices like keyboards during S3 sleep?

Yes. When configured in Auto Sleep & Charge mode with SEL=LOW, the PI5USB1457AZAEX enables USB Low-Speed (1.5 Mbps) pass-through between D+/D− and Y+/Y−, allowing pre-enumerated mice and keyboards to wake the system from S3. This functionality is confirmed in the device's truth table and detailed feature description.