■ Features
• Compact full-mold package (equivalent to TO220)
• Output current: 0.27A
• Low dropout voltage: VDIF≤0.5V (at IO=0.27A)
• Output ON/OFF control terminal is compatible with LS-TTL. (It may be directly driven by LS-TTL or standard CMOS logic.)
• Built-in foldback overcurrent, thermal protection circuits
• Highly accurate overcurent protection starting current
    SI-3157B : 0.3 to 0.7A (VIN=18V)
    SI-3025B : 0.3 to 0.7A (When VIN=18V, setting VO=15.7V)
                      0.3 to 0.75A (When VIN=18V, setting VO=11.7V)
• Variable output voltage type (SI-3025B) also available

■ Applications
• For BS and CS antenna power supplies
• Electronic equipment