Diodes Incorporated AP61102Z6-7

Overview

AP61102Z6-7 from Diodes Incorporated is a 2.3V–5.5V input, 1A synchronous buck converter with integrated 110mΩ high-side and 80mΩ low-side MOSFETs, constant-on-time (COT) control, 2.2MHz switching frequency at 5V/1.8V, and a power-good (PG) open-drain output - deployed in FPGA/DSP core supplies and network video cameras.

For engineers reviewing the AP61102Z6-7 datasheet, AP61102Z6-7 pinout, AP61102Z6-7 application, or AP61102Z6-7 equivalent, key selection criteria include its PFM/PWM mode programmability via EN, ±2% 0.6V reference accuracy, 15μA quiescent current in PFM, thermal shutdown at +160°C, and SOT563 package compatibility with space-constrained point-of-load designs.

Technical Context

The AP61102Z6-7 implements Constant On-Time (COT) control with input-voltage-dependent on-time calculation (t_ON = V_OUT / (V_IN × f_SW)), enabling fast transient response and stable operation without external compensation. Its dual-mode operation-PFM for light loads (≤5mA) and PWM across full load range-is selected by EN voltage relative to VIN (threshold: VIN − 200mV).

It integrates protection including undervoltage lockout (UVLO falling at 1.84V), VIN overvoltage protection (OVP rising at 6.3V), peak/valley current limiting (2.5A/1.9A), and thermal shutdown (+160°C). The PG pin provides open-drain status with 90–95% undervoltage and 105–110% overvoltage thresholds and 55μs rise delay.

Key Specifications

Pinout & Package

SOT563 (6-pin, 1.6mm × 1.6mm × 0.55mm, 0.5mm pitch) - thermally enhanced, lead-free, RoHS-compliant surface-mount package with exposed pad for improved heat dissipation (θ_JA = 141°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck converter applications.

Compared with MP2152GQZ-15 and RT7297BZSP, the AP61102Z6-7 uniquely combines adjustable output, integrated PG, ultra-low IQ, and minimal SOT563 footprint - making it optimal for space- and efficiency-critical embedded power rails requiring system-level monitoring.

Availability

AP61102Z6-7 is available at Aetrix Electronics and suitable for FPGA core supplies, network video cameras, and wireless router CPU power rails requiring stable component supply, long-term lifecycle support, and automotive-qualified alternatives (AP61102Q) upon request.

Supply support for AP61102Z6-7 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 connectivity applications.

The AP61100/AP61102 product line delivers highly integrated, low-IQ synchronous buck converters targeting space-constrained, battery-sensitive, and thermally demanding point-of-load applications in consumer, industrial, and automotive electronics.

FAQ

What is the function of the PG pin on AP61102Z6-7?

The PG (Power-Good) pin is an open-drain output that signals valid regulation: it remains low during soft-start and when output voltage deviates beyond ±5% of target (90–95% UV, 105–110% OV), then pulls high after 55μs delay once regulation is restored. It connects internally to VIN via a 5MΩ pull-up resistor and interfaces directly with processor reset or supervisor ICs.

How does the AP61102Z6-7 switch between PFM and PWM modes?

Mode selection is controlled solely by EN pin voltage relative to VIN: if EN ≥ VIN − 200mV, the device operates in PFM for highest light-load efficiency; if EN < VIN − 200mV, it forces PWM mode regardless of load. No external components or configuration registers are needed - mode is set at power-up based on EN biasing.

Can AP61102Z6-7 operate with a 2.5V input?

Yes - the AP61102Z6-7 supports input voltages from 2.3V to 5.5V. At VIN = 2.5V, it maintains regulation down to VOUT = 0.6V with full 1A capability, though switching frequency decreases slightly (to ~1.9MHz typical at VOUT = 1.8V) due to COT's VIN-dependent on-time calculation.

What thermal performance can be expected in SOT563 package?

In standard FR-4 PCB layout (2-layer, 2oz copper, recommended pad), the AP61102Z6-7 exhibits θ_JA = 141°C/W and θ_JC = 33°C/W. At 1A output and 5V input, junction temperature rise is approximately 45°C above ambient - well within the +125°C max operating TJ, provided minimum copper area per datasheet layout guidelines is maintained.