ELM99xxxA LOW SATURATION VOLTAGE REGULATOR
■ 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.
■ FEATURES
・ Maximum output current
: 300mA (Intenal current limiter operates in case load
current exceeds 300mA.)
・ High accuracy of output voltage
・Small input-output voltage differential
・Low stand-by current consumption
・High load stability
: ± 2.0%
: TYP. 140mV (ELM9930xA IOUT=40mA)
: TYP. 0.1 μ A (ELM99xx3A)
: TYP. 5mV (1mA ≦ Iout ≦ 100mA)
: TYP. 0.15%/V (ELM9930xA IOUT=40mA)
: 2.0V～ 6.0V ( 0.1V steps )
・High input stability
・ Output voltage range
・Short-circuit current limiter
・Chip-enable pin available
: TYP. 70mA (VOUT=0V)
: “L”active ELM99xx2A, “H”active ELM99xx3A
■ APPLICATION
・ Cellular telephones
・ Palmtops
・ Laptop and notebook computers
・ Reference voltage sources
・PCMCIA cards
・ cameras and video recorders
・ Battery-operated devices
■ PIN CONFIGURATION
1.ELM99xx1A
2.ELM99xx2A
3.ELM99xx3A
5
4
5
4
SOT-89-5
SOT-89-5
SOT-89
1
2
3
1
2
3
1
2
3
( TOP VIEW )
( TOP VIEW )
( TOP VIEW )
SOT-89
Pin No. Pin Name
SOT-89-5
Pin No. Pin Name
SOT-89-5
Pin No. Pin Name
1
2
3
VSS
VIN
VOUT
1
2
3
4
5
VSS
VIN
VOUT
NC
1
2
3
4
5
VSS
VIN
VOUT
NC
CE
CE
220
ELM [ ELM ELECTRONICS ]
