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LP3883ES-1.5 Datasheet(PDF) 3 Page - Texas Instruments

Part No. LP3883ES-1.5
Description  3A Fast-Response Ultra Low Dropout Linear Regulators
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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LP3883ES-1.5 Datasheet(HTML) 3 Page - Texas Instruments

 
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LP3883
www.ti.com
SNVS223F – NOVEMBER 2002 – REVISED APRIL 2013
ELECTRICAL CHARACTERISTICS
Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: VIN = VO(NOM) + 1V, VBIAS = 4.5V, IL = 10 mA, CIN = COUT = 4.7 µF, VS/D = VBIAS.
Symbol
Parameter
Conditions
Typical(1)
MIN(2)
MAX(2)
Units
VO
Output Voltage Tolerance
10 mA < IL < 3A
1.198
1.234
VO(NOM) + 1V ≤ VIN ≤ 5.5V
1.216
4.5V
≤ VBIAS ≤ 6V
1.186
1.246
1.478
1.522
1.5
V
1.455
1.545
1.773
1.827
1.8
1.746
1.854
ΔVO/ΔVIN
Output Voltage Line Regulation(3)
VO(NOM) + 1V ≤ VIN ≤ 5.5V
0.01
%/V
ΔVO/ΔIL
Output Voltage Load Regulation(4)
10 mA < IL < 3A
0.04
%/A
0.06
VDO
Dropout Voltage(5)
IL = 3A
270
210
mV
420
IQ(VIN)
Quiescent Current Drawn from VIN
10 mA < IL < 3A
7
3
mA
Supply
8
VS/D ≤ 0.3V
1
0.03
µA
30
IQ(VBIAS)
Quiescent Current Drawn from
10 mA < IL < 3A
2
1
mA
VBIAS Supply
3
VS/D ≤ 0.3V
1
0.03
µA
30
ISC
Short-Circuit Current
VOUT = 0V
6
A
Shutdown Input
VSDT
Output Turn-off Threshold
Output = ON
0.7
1.3
V
Output = OFF
0.7
0.3
Td (OFF)
Turn-OFF Delay
RLOAD X COUT << Td (OFF)
20
µs
Td (ON)
Turn-ON Delay
RLOAD X COUT << Td (ON)
15
IS/D
S/D Input Current
VS/D =1.3V
1
µA
VS/D ≤ 0.3V
−1
AC Parameters
PSRR (VIN)
Ripple Rejection for VIN Input
VIN = VOUT +1V, f = 120 Hz
80
Voltage
VIN = VOUT + 1V, f = 1 kHz
65
dB
PSRR (VBIAS)
Ripple Rejection for VBIAS Voltage
VBIAS = VOUT + 3V, f = 120 Hz
70
VBIAS = VOUT + 3V, f = 1 kHz
65
Output Noise Density
f = 120 Hz
µV/root
−H
1
z
en
Output Noise Voltage
BW = 10 Hz
− 100 kHz
150
µV (rms)
VOUT = 1.8V
BW = 300 Hz
− 300 kHz
90
(1)
Typical numbers represent the most likely parametric norm for 25°C operation.
(2)
Limits are ensured through testing, statistical correlation, or design.
(3)
Output voltage line regulation is defined as the change in output voltage from nominal value resulting from a change in input voltage.
(4)
Output voltage load regulation is defined as the change in output voltage from nominal value as the load current increases from no load
to full load.
(5)
Dropout voltage is defined as the minimum input to output differential required to maintain the output with 2% of nominal value.
Copyright © 2002–2013, Texas Instruments Incorporated
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Product Folder Links: LP3883


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