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| LP38691DTX-5.0 Datasheet, PDF (4/27 Pages) Texas Instruments – LP38693 500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors | |||
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LP38691, LP38693
SNVS321K â JANUARY 2005 â REVISED APRIL 2013
www.ti.com
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 = VOUT + 1V, CIN = COUT = 10 µF, ILOAD = 10mA. Min/Max limits are specified through testing,
statistical correlation, or design.
Symbol
Parameter
Conditions
Min
Typ (1)
Max
Units
-2.0
2.0
VO
ÎVO/ÎVIN
ÎVO/ÎIL
Output Voltage Tolerance
Output Voltage Line Regulation(2)
Output Voltage Load Regulation(3)
100 µA < IL < 0.5A
VO + 1V ⤠VIN ⤠10V
VO + 0.5V ⤠VIN ⤠10V
IL = 25mA
1 mA < IL < 0.5A
VIN = VO + 1V
-4.0
4.0
%VOUT
0.03
0.1
%/V
1.8
5
%/A
(VO = 2.5V)
IL = 0.1A
IL = 0.5A
80
145
430
725
VIN - VOUT
Dropout Voltage(4)
(VO = 3.3V)
IL = 0.1A
IL = 0.5A
65
330
110
550
mV
(VO = 5V)
IL = 0.1A
IL = 0.5A
45
100
250
450
IQ
Quiescent Current
VIN ⤠10V, IL =100 µA - 0.5A
55
100
VEN ⤠0.4V, (LP38693 Only)
0.001
1
µA
IL(MIN)
Minimum Load Current
VIN - VO ⤠4V
100
IFB
Foldback Current Limit
VIN - VO > 5V
VIN - VO < 4V
350
mA
850
PSRR
Ripple Rejection
VIN = VO + 2V(DC), with 1V(p-p) /
120Hz Ripple
55
dB
TSD
TSD (HYST)
Thermal Shutdown Activation
(Junction Temp)
Thermal Shutdown Hysteresis
(Junction Temp)
160
°C
10
en
VO (LEAK)
VEN
IEN
Output Noise
Output Leakage Current
Enable Voltage (LP38693 Only)
Enable Pin Leakage (LP38693
Only)
BW = 10Hz to 10kHz
VO = 3.3V
VO = VO(NOM) + 1V @ 10VIN
Output = OFF
Output = ON, VIN = 4V
Output = ON, VIN = 6V
Output = ON, VIN = 10V
VEN = 0V or 10V, VIN = 10V
0.7
µV/âHz
0.5
12
µA
0.4
1.8
V
3.0
4.0
-1
0.001
1
µA
(1) Typical numbers represent the most likely parametric norm for 25°C operation.
(2) Output voltage line regulation is defined as the change in output voltage from nominal value resulting from a change in input voltage.
(3) Output voltage load regulation is defined as the change in output voltage from nominal value as the load current increases from 1mA to
full load.
(4) Dropout voltage is defined as the minimum input to output differential required to maintain the output within 100mV of nominal value.
4
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Copyright © 2005â2013, Texas Instruments Incorporated
Product Folder Links: LP38691 LP38693
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