â GENERAL DESCRIPTION
ELM99xxxA series is CMOS voltage regulator providing large current. It consists of devices including reference voltage source, error amplifier, low resistance output transistor, short-circuit protection circuit, output voltage setting resistor, chip-enable circuit. Output voltage is fixed internally with high accuracy. ELM99xxxA provides excellent characteristics, such as small input-output voltage difference due to low resistance output transistor, high load stability due to high gain error amplifier. The chip-enable function is available in three selections, no-chip enable function, active-low (“L” active) and active-high (“H” active).
The package is SOT-89-3 or SOT-89-5. SOT-89-5 is used for chip enable version.
â FEATURES
ã» Maximum output current : 300mA (Intenal current limiter operates in case load current exceeds 300mA.)
ã» High accuracy of output voltage : ± 2.0%
ã»Small input-output voltage differential : TYP. 140mV (ELM9930xA IOUT=40mA)
ã» Low stand-by current consumption : TYP. 0.1 μ A (ELM99xx3A)
ã»High load stability : TYP. 5mV (1mA ⦠Iout ⦠100mA)
ã»High input stability : TYP. 0.15%/V (ELM9930xA IOUT=40mA)
ã» Output voltage range : 2.0Vï½ 6.0V ( 0.1V steps )
ã» Short-circuit current limiter : TYP. 70mA (VOUT=0V)
ã» Chip-enable pin available : “L”active ELM99xx2A, “H”active ELM99xx3A
â APPLICATION
ã» Cellular telephones ã» Palmtops
ã» Laptop and notebook computers ã» cameras and video recorders
ã» Reference voltage sources ã» Battery-operated devices
ã»PCMCIA cards
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