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PDF LD2985 Data sheet ( Hoja de datos )
| Número de pieza | LD2985 | |
| Descripción | VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP. COMPATIBLE | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LD2985 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
LD2985
LINEAR INTEGRATED CIRCUIT
VERY LOW DROP AND LOW
NOISE VOLTAGE REGULATOR
LOW ESR CAP. COMPATIBLE,
WITH INHIBIT FUNCTION
DESCRIPTION
The UTC LD2985 is a 150mA fixed output voltage regulator. The
ultra low drop voltage and the low quiescent current make them
particularly suitable for low noise, low power applications, and in
battery powered systems. In sleep mode quiescent current is less
than 1μA when INHIBIT pin is pulled low. Shutdown Logic Control
Function is available on pin 3 (TTL compatible). This means that
when the device is used as local regulator, it is possible to put a part
of the board in standby, decreasing the total power consumption.
An external capacitor, CBYP=10nF, connected between bypass
pin and GND reduce the noise to 30μVrms.
Typical applications are in cellular phone, palmtop laptop
computer, personal digital assistant (PDA), personal stereo,
camcorder and camera.
FEATURES
* Very Low Dropout Voltage (280mV at 150mA and 7mV at 1mA load)
* Very Low Quiescent current
* Output Current up to 150mA
* Logic Controlled Electronic Shutdown
* Output Voltage of 1.5, 1.8, 2.5, 2.8, 2.85, 3, 3.1, 3.2, 3.3, 3.5, 3.6, 3.8, 4, 4.7, 5V
* Internal Current and Thermal Limit
* Low Output Noise Voltage 30μVrms
ORDERING INFORMATION
Ordering Number
LD2985G-xx-AF5-R
Note: xx: Output Voltage, refer to Marking Information.
Package
SOT-25
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2016 Unisonic Technologies Co., Ltd
1 of 15
QW-R102-024.L
1 page  
LD2985
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
FOR VOUT=1.8V
PARAMETER
Operating Input Voltage
Output Voltage
Short Circuit Current
Line Regulation
Dropout Voltage
Quiescent Current
Supply Voltage Rejection
Control Input Logic Low
Control Input Logic High
Control Input Current
Output Noise Voltage
SYMBOL
VI(OPR)
VOUT
ISC
△VOUT
VD
IQ
SVR
VIL
VIH
IiNH
eN
TEST CONDITIONS
VIN=2.8V
IOUT=1 ~ 150mA
RL=0
VIN=VOUT+1V ~ 16V, IOUT=1mA
IOUT=0
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=150mA
IOUT=0
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=150mA
OFF MODE VINH<0.18V
CBYP=0.01μF, Co=10μF, f=1KHz
TJ=-20 ~ 125°C
TJ=-20 ~ 125°C
TJ=-20 ~ 125°C, VSHDN=VIN
TJ=-20 ~ 125°C, VSHDN=0V
B=300Hz ~ 50KHz
CBYP=0.01μF, Co=10μF
FOR VOUT=2.5V
PARAMETER
Operating Input Voltage
Output Voltage
Short Circuit Current
Line Regulation
Dropout Voltage
Quiescent Current
Supply Voltage Rejection
Control Input Logic Low
Control Input Logic High
Control Input Current
Output Noise Voltage
SYMBOL
VI(OPR)
VOUT
ISC
△VOUT
VD
IQ
SVR
VIL
VIH
IINH
eN
TEST CONDITIONS
VIN=3.5V
IOUT=1 ~ 150mA
RL=0
VIN=VOUT+1V ~ 16V, IOUT=1mA
IOUT=0
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=150mA
IOUT=0
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=150mA
OFF MODE VINH<0.18V
CBYP=0.01μF, Co=10μF, f=1KHz
TJ=-20 ~ 125°C
TJ=-20 ~ 125°C
TJ=-20 ~ 125°C, VSHDN=VIN
TJ=-20 ~ 125°C, VSHDN=0V
B=300Hz ~ 50KHz
CBYP=0.01μF, Co=10μF
MIN
1.764
1.746
2
TYP
1.8
600
1
7
40
120
280
80
100
280
1050
2900
1.5
45
5
0
30
MAX
16
1.836
1.854
30
3
10
60
150
350
100
150
330
1300
3300
0.15
15
-1
UNIT
V
V
V
mA
mV
mV
mV
mV
mV
mV
μA
μA
μA
μA
μA
μA
dB
V
V
μA
μA
μV
MIN
2.450
2.425
2
TYP
2.5
600
1
7
40
120
280
80
100
280
1050
2900
1.5
45
5
0
MAX
16
2.550
2.575
30
3
10
60
150
350
100
150
330
1300
3300
0.15
15
-1
UNIT
V
V
V
mA
mV
mV
mV
mV
mV
mV
μA
μA
μA
μA
μA
μA
dB
V
V
μA
μA
30 μV
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 15
QW-R102-024.L
5 Page 
LD2985
ELECTRICAL CHARACTERISTICS(Cont.)
LINEAR INTEGRATED CIRCUIT
FOR VOUT=4.7V
PARAMETER
Operating Input Voltage
Output Voltage
Short Circuit Current
Line Regulation
Dropout Voltage
Quiescent Current
Supply Voltage Rejection
Control Input Logic Low
Control Input Logic High
Control Input Current
Output Noise Voltage
FOR VOUT=5.0V
PARAMETER
Operating Input Voltage
Output Voltage
Short Circuit Current
Line Regulation
Dropout Voltage
Quiescent Current
Supply Voltage Rejection
Control Input Logic Low
Control Input Logic High
Control Input Current
Output Noise Voltage
SYMBOL
VI(OPR)
VOUT
ISC
△VOUT
VD
IQ
SVR
VIL
VIH
IINH
eN
TEST CONDITIONS
VIN=5.7V
IOUT=1 ~ 150mA
RL=0
VIN=VOUT+1V ~ 16V, IOUT=1mA
IOUT=0
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=150mA
IOUT=0
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=150mA
OFF MODE VINH<0.18V
CBYP=0.01μF, CO=10μF, f=1KHz
TJ=-20 ~ 125°C
TJ=-20 ~ 125°C
TJ=-20 ~ 125°C, VSHDN=VIN
TJ=-20 ~ 125°C, VSHDN=0V
B=300Hz ~ 50KHz
CBYP=0.01μF, CO=10μF
SYMBOL
VI(OPR)
VOUT
ISC
△VOUT
VD
IQ
SVR
VIL
VIH
IINH
eN
TEST CONDITIONS
VIN=6.0V
IOUT=1 ~ 150mA
RL=0
VIN=VOUT+1V ~ 16V, IOUT=1mA
IOUT=0
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=150mA
IOUT=0
IOUT=1mA
IOUT=10mA
IOUT=50mA
IOUT=150mA
OFF MODE VINH<0.18V
CBYP=0.01μF, CO=10μF, f=1KHz
TJ=-20 ~ 125°C
TJ=-20 ~ 125°C
TJ=-20 ~ 125°C, VSHDN=VIN
TJ=-20 ~ 125°C, VSHDN=0V
B=300Hz ~ 50KHz
CBYP=0.01μF, CO=10μF
MIN
4.606
4.559
2
TYP
4.7
600
1
7
40
120
280
80
100
280
1050
2900
1.5
45
5
0
30
MAX
16
4.794
4.841
30
3
10
60
150
350
100
150
330
1300
3300
0.15
15
-1
UNIT
V
V
V
mA
mV
mV
mV
mV
mV
mV
μA
μA
μA
μA
μA
μA
dB
V
V
μA
μA
μV
MIN
4.900
4.850
2
TYP
5
600
1
7
40
120
280
80
100
280
1050
2900
1.5
45
5
0
30
MAX
16
5.100
5.150
30
3
10
60
150
350
100
150
330
1300
3300
0.15
15
-1
UNIT
V
V
V
mA
mV
mV
mV
mV
mV
mV
μA
μA
μA
μA
μA
μA
dB
V
V
μA
μA
μV
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
11 of 15
QW-R102-024.L
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet LD2985.PDF ] | |
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