PM660A 002-01 Power IC

Working on a Snapdragon 660 or Snapdragon 670 board, you'll find the PM660A 002-01 sitting close to the main PM660 and PM660L chips, and together these three ICs manage almost every power rail the phone needs to boot. Qualcomm split the workload across this trio so the primary PMIC handles bulk regulators, the low-voltage companion covers secondary rails, and the PM660A takes on power sequencing along with support for the internal audio codec path. That's why a bad PM660A doesn't always kill the board outright — sometimes you get a phone that powers on but stays silent, or one that boots into a bootloop because the sequencing handshake between the PMICs never completes.You'll mostly meet this chip on Xiaomi, Oppo, and Vivo boards built around SDM660/SDM670, and the symptom pattern is fairly consistent across them: dead after flash, hang on logo, no power at all, or charging issue that won't clear even after a fresh battery and connector. Before you blame the IC, run your usual current-draw test on the bench power supply — a board pulling zero current usually points to the main PMIC or a shorted rail, while a board that draws current but never boots past the logo is where you start suspecting the PM660A section specifically. Check your board schematic or boardview for the PM660A footprint, then scope the reset and sequencing lines feeding into it before you commit to reballing.Removing and replacing this chip is standard BGA rework — nothing exotic, but it rewards patience. Set your hot air station to a controlled profile so you don't lift neighboring components, since PM660A sits in a densely populated area on most of these boards. Clean the pads thoroughly after removal, check for lifted pads under the microscope, and reball with matched-size solder balls before reflow. A cold joint on this chip after reinstall shows up exactly like the original fault, so recheck your reflow profile if the phone still won't power up after IC change karna.This part carries genuine value on your repair bench because power-section faults are among the most common jobs walking through the door on these chipsets, and guessing at a replacement chip wastes both your time and the customer's money. Stock the PM660A 002-01 alongside your PM660 and PM660L IC stock so you're never stuck mid-repair waiting on a part. It fits directly into your existing eMMC/UFS and IC-repair workflow — once the power rail is confirmed dead or unstable through your diagnostics, this is the exact replacement to reach for on these SDM660/SDM670 boards.Pair this IC with your reballing kit, PCB holder, and microscope for a clean install, and keep a hot air station calibrated for fine-pitch BGA work on hand. If you're doing volume repairs on Xiaomi, Oppo, or Vivo devices from this chipset generation, this chip earns a permanent spot in your parts drawer rather than an as-needed order.