HT75xx-7 30V, 100mA TinyPowerTM LDO with Protectio.
HT7521-3 - 100mA TinyPower LDO
HT7521-7 - 100mA TinyPower LDO
HT7521-1 - 100mA Low Power LDO
HT7521-2 - 100mA Low Power LDO