| 摘要 |
PROBLEM TO BE SOLVED: To provide a protective circuit module for a charged battery wherein the on-resistance of a field effect transistor is reduced well while a charged buttery pack is thinner, smaller, and is manufactured at lower cost. SOLUTION: Arbitrary numbers of semiconductor circuit parts 5a, 5b, and 6 comprising at least charging/discharging field effect transistor and arbitrary numbers of passive circuit parts 7, 8a-8c, and 9a-9g are mounted on a circuit board 1. Here, the semiconductor circuit parts 5a, 5b, and 6 are mounted facedown on the circuit board 1 as a bare chip. |
