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LP3981ILD-2.5/NOPB Datasheet(PDF) 5 Page - Texas Instruments

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Part No. LP3981ILD-2.5/NOPB
Description  Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LP3981ILD-2.5/NOPB Datasheet(HTML) 5 Page - Texas Instruments

 
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LP3981
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SNVS159H – OCTOBER 2001 – REVISED JULY 2015
6.5 Electrical Characteristics
Unless otherwise specified: VEN = 1.2 V, VIN = VOUT + 0.5 V, CIN = 2.2 µF, CBP = 0.033 µF, IOUT = 1 mA, COUT = 2.2 µF. All
values are for TJ = 25°C, unless otherwise specified.
(1) (2)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
−2
2
% of
Output voltage tolerance
VOUT(nom)
TJ = –40°C to +125°C
–3
3
VIN = VOUT + 0.5 V to 6 V, TA < 85°C
−0.1
0.005
0.1
Line regulation error
%/V
ΔVOUT
VIN = VOUT + 0.5 V to 6 V, TJ ≤125°C
–0.2
0.2
IOUT = 1 mA to 300 mA
0.0003
Load regulation error(3)
%/mA
IOUT = 1 mA to 300 mA
0.005
TJ = –40°C to +125°C
VIN = VOUT(nom) + 1 V,
50
ƒ = 1 kHz,
IOUT = 50 mA (Figure 16)
PSRR
Power supply rejection ratio(4)
dB
VIN = VOUT(nom) + 1 V,
55
ƒ = 10 kHz,
IOUT = 50 mA (Figure 16)
VEN = 1.2 V, IOUT = 1 mA
70
VEN = 1.2 V, IOUT = 1 mA
120
TJ = –40°C to +125°C
VEN = 1.2 V, IOUT = 1 mA to 300 mA,
170
VOUT = 2.5 V
(5)
IQ
Quiescent current
µA
VEN = 1.2 V, IOUT = 1 mA to 300 mA,
210
VOUT = 2.5 V
TJ = –40°C to +125°C
(5)
VEN = 0.4 V
0.003
VEN = 0.4 V, TJ = –40°C to +125°C
1.5
IOUT = 1 mA
0.5
IOUT = 1 mA, TJ = –40°C to +125°C
5
IOUT = 200 mA
88
Dropout voltage (6)
mV
IOUT = 200 mA, TJ = –40°C to +125°C
133
IOUT = 300 mA
132
IOUT = 300 mA, TJ = –40°C to +125°C
200
ISC
Short-circuit current limit
Output grounded (steady state)
600
mA
BW = 10 Hz to 100 kHz,
en
Output noise voltage
35
µVRMS
CBP = 0.033 µF
Thermal shutdown temperature
160
TSD
°C
Thermal shutdown hysteresis
20
IOUT(PK) Peak output current
VOUT ≥ VOUT (nom) – 5%
300
455
mA
IEN
Maximum input current at VEN
VEN = 0 and VIN
0.001
µA
VIL
Logic low input threshold
VIN = 2.7 V to 6 V, TJ = –40°C to +125°C
0.4
VIH
Logic high input threshold
VIN = 2.7 V to 6 V, TJ = –40°C to +125°C
1.4
(1)
Minimum (MIN) and maximum (MAX) limits are ensured by design, test, or statistical analysis. Typical (TYP) numbers are not verified,
but do represent the most likely norm.
(2)
The target output voltage, which is labeled VOUT(nom), is the desired voltage option.
(3)
An increase in the load current results in a slight decrease in the output voltage and vice versa.
(4)
Specified by design. Not production tested.
(5)
For VOUT > 2.5 V, increase IQ(MAX) by 2.5 µA for every 0.1 V increase in VOUT(nom); that is,
IQ(MAX) = 210 µA + ((VOUT(NOM) – 2.5) × 25) µA .
(6)
Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. This
specification does not apply for input voltages below 2.5 V.
Copyright © 2001–2015, Texas Instruments Incorporated
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