ELM99xxxA
■
GENERAL DESCRIPTION
LOW SATURATION VOLTAGE REGULATOR
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
・
High accuracy of output voltage
・
Small input-output voltage differential
・
Low stand-by current consumption
・
High load stability
・
High input stability
・
Output voltage range
・
Short-circuit current limiter
・
Chip-enable pin available
: 300mA (Intenal current limiter operates in case load
current exceeds 300mA.)
:
±
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
½
6.0V ( 0.1V steps )
: TYP. 70mA (VOUT=0V)
: “L”active ELM99xx2A, “H”active ELM99xx3A
・
Palmtops
・
cameras and video recorders
・
Battery-operated devices
■
APPLICATION
・
Cellular telephones
・
Laptop and notebook computers
・
Reference voltage sources
・
PCMCIA cards
■
PIN CONFIGURATION
1.ELM99xx1A
2.ELM99xx2A
5
4
3.ELM99xx3A
5
4
SOT-89
SOT-89-5
SOT-89-5
1
2
3
1
2
3
1
2
3
( TOP VIEW )
( TOP VIEW )
( TOP VIEW )
SOT-89
Pin No. Pin Name
1
VSS
2
VIN
3
VOUT
SOT-89-5
Pin No. Pin Name
1
VSS
2
VIN
3
VOUT
4
NC
5
CE
SOT-89-5
Pin No. Pin Name
1
VSS
2
VIN
3
VOUT
4
NC
5
CE
220
LOW SATURATION VOLTAGE REGULATOR
■
SELECTION GUIDE
Symbol
Ex
a, b
Output Voltage
27 : VOUT = 2.7V
30 : VOUT = 3.0V
33 : VOUT = 3.3V
50 : VOUT = 5.0V
CE = "L"active
CE = "H"active
A Version
ELM99xxxA
ELM99 x x x A
↑↑↑↑
a b c d
c
d
CE Selection
Product Version
1:
2:
3:
A:
■
MARKING
ELM99xx1A
SOT-89
①
: Represents the integer digit of the Output Voltage
Symbol
A
B
C
Symbol
A
B
C
D
E
Output Voltage
2.*V
3.*V
4.*V
Output Voltage
*.0V
*.1V
*.2V
*.3V
*.4V
Symbol
F
G
H
J
K
Output Voltage
*.5V
*.6V
*.7V
*.8V
*.9V
Symbol
D
E
Output Voltage
5.*V
6.*V
①
②
③
④
②
: Represents the decimal digit of the Output Voltage
③
: Represents the assembly lot number
A
½
Z repeated (I,O,X excepted)
④
: Represents the assembly lot number
0
½
9 repeated
221
LOW SATURATION VOLTAGE REGULATOR
ELM99xxxA
ELM99xx2A
SOT-89-5
①
: Represents the integer digit of the Output Voltage
Symbol
Output Voltage
2.*V
3.*V
4.*V
Output Voltage
*.0V
*.1V
*.2V
*.3V
*.4V
Symbol
J
K
Output Voltage
5.*V
6.*V
F
G
H
①
②
③
④
②
: Represents the decimal digit of the Output Voltage
Symbol
A
B
C
D
E
Symbol
F
G
H
J
K
Output Voltage
*.5V
*.6V
*.7V
*.8V
*.9V
③
: Represents the assembly lot number
A
½
Z repeated (I,O,X excepted)
④
: Represents the assembly lot number
0
½
9 repeated
ELM99xx3A
①
: Represents the integer digit of the Output Voltage
Symbol
L
M
N
Output Voltage
2.*V
3.*V
4.*V
Symbol
P
Q
Output Voltage
5.*V
6.*V
②
: Represents the decimal digit of the Output Voltage
Symbol
A
B
C
D
E
Output Voltage
*.0V
*.1V
*.2V
*.3V
*.4V
Symbol
F
G
H
J
K
Output Voltage
*.5V
*.6V
*.7V
*.8V
*.9V
③
: Represents the assembly lot number
A
½
Z repeated (I,O,X excepted)
④
: Represents the assembly lot number
0
½
9 repeated
222
LOW SATURATION VOLTAGE REGULATOR
■
BLOCK DIAGRAM
ELM99xx1A
VIN
VOUT
ELM99xxxA
ELM99xx2A, ELM99xx3A
VIN
VOUT
-
+
Protect
Circuit
-
+
Protect
Circuit
Vref
Vref
VSS
Control
Circuit
VSS
CE/CE
* CE : ELM99xx2A, CE : ELM99xx3A
■
STANDARD CIRCUIT
ELM99xx1A
ELM99xx2A, ELM99xx3A
Control Voltage
CE/CE
VIN
VIN
VOUT
VOUT
CO
VSS
VIN
VIN
ELM99xx1A
ELM99xx2A
ELM99xx3A
VSS
VOUT
VOUT
CI
CI
CO
* CE : ELM99xx2A, CE : ELM99xx3A
■
MAXIMUM ABSOLUTE RATINGS
Parameter
Input Voltage
CE/CE Input Voltage
Output Voltage
Output Current
Power Dissipation
Operating Temperature
Storage Temperature
Sym.
VIN
VCE
VOUT
IOUT
SOT-89
Pd
SOT-89-5
Top
Tstg
Limits
(VSS=0V)
Units
V
V
V
mA
mW
℃
℃
12
VSS-0.3½VIN+0.3
VSS-0.3½VIN+0.3
500
300
500
-30½+80
-40½+125
* Output current must not exceed power dissipation specified in Maximum Absolute Ratings.
223
京公网安备 11010802033920号
EEWORLD
