S-8351 (S-8351 / S-8352) SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR

S-8351 (S-8351 / S-8352) SMALL PACKAGE PFM CONTROL STEP-UP SWITCHING REGULATOR

Output voltage pin and IC power supply pin GND pin External inductor connection pin (Open-drain output) 2 Figure 7 3 Table 7 S-8352 Series B and C Types (Without shutdown function, VDD / VOUT non-separate type) Pin No. 1 2 3 Symbol VOUT VSS EXT Pin Description Output voltage pin and IC power supp.

Features

the small package and low current consumption, makes the S-8351 Series ideal for applications such as the power supply unit of portable equipment. The S-8352 Series, which features an external transistor, is suitable for applications requiring a high output current. „ Features
• Low voltage operation : Startup at 0.9 V min. (IOUT = 1 mA) guaranteed
• Low current consumption : During operation 23.2 µA (VOUT = 3.3 V, typ.) During shutdown 0.5 µA (max.)
• Duty ratio : 50 % / 75 % built-in auto-switching-type PFM control circuit (A, B, and D type) 75 % built-in fixed-type PFM control circuit (C .