LP2989 Datasheet, PDF (6/34 Pages) National Semiconductor (TI) – Micropower/Low Noise, 500 mA Ultra Low-Dropout Regulator For Use with Ceramic Output Capacitors

LP2989
SNVS083O – FEBRUARY 2005 – REVISED MARCH 2015
www.ti.com
Electrical Characteristics (continued)
Unless otherwise specified: T_J = 25°C, V_IN = V_OUT(NOM) + 1 V, I_OUT = 1 mA, C_OUT = 4.7 µF, C_IN = 2.2 µF, V_SD = 2 V.
PARAMETER
TEST CONDITIONS
LP2989AI-X.X ⁽¹⁾
MIN TYP MAX
LP2989I-X.X ⁽¹⁾
MIN TYP MAX
UNIT
I_OUT = 100 µA
I_OUT = 100 µA, –40°C ≤ T_J ≤
125°C
110
175
110
200
110
175
µA
110
200
I_GND
Ground pin current
I_OUT= 200 mA
I_OUT = 200 mA, –40°C ≤ T_J
≤ 125°C
I_OUT = 500 mA
I_OUT = 500 mA, –40°C ≤ T_J
≤ 125°C
1
2
1
3.5
3
6
3
9
1
2
mA
1
3.5
3
6
mA
3
9
I_OUT(PK)
I_OUT(MAX)
e_n
Peak output current
Short circuit current
Output noise voltage
(RMS)
ΔV_OUT/ΔV_IN
ΔV_OUT/ΔT_D
Ripple Rejection
Output voltage
temperature coefficient
V_SD < 0.18 V, –40°C ≤ T_J ≤
125°C
V_SD < 0.4 V
V_OUT ≥ V_OUT(NOM) − 5%
R_L = 0 (Steady State)⁽³⁾
BW = 100 Hz to 100 kHz,
C_OUT = 10 µF, C_BYPASS =
.01 µF, V_OUT = 2.5 V
f = 1 kHz, C_OUT = 10 µF
See⁽⁴⁾, –40°C ≤ T_J ≤ 125°C
0.5
0.05
600
800
1000
18
60
20
2
0.5
0.8
0.05
600
800
1000
18
60
20
2
µA
0.8
mA
mA
µV_(RMS)
dB
ppm/°C
SHUTDOWN INPUT
V_H = Output ON
1.4
1.4
V_H = Output ON, –40°C ≤ T_J
≤ 125°C
1.6
V_SD
SD Input voltage
V_L = Output OFF
0.5
1.6
V
0.5
V_L = Output OFF, I_IN ≤ 2 µA,
–40°C ≤ T_J ≤ 125°C
0.18
0.18
V_SD = 0
0.001
0.001
V_SD = 0, –40°C ≤ T_J ≤
125°C
I_SD
SD Input current
V_SD = 5 V
−1
5
−1
µA
5
V_SD = 5 V, –40°C ≤ T_J ≤
125°C
15
15
ERROR COMPARATOR
V_OH = 16 V
I_OH
Output “HIGH” leakage _{VOH = 16 V, –40°C ≤ TJ ≤}
125°C
0.001
1
0.001
2
0.001
0.001
1
µA
2
V_OL
V_THR(MAX)
V_THR(MIN)
HYST
Output “LOW” voltage
Upper threshold voltage
Lower threshold voltage
Hysteresis
V_IN = V_OUT(NOM) − 0.5 V,
I_OUT(COMP) = 150 µA
V_IN = V_OUT(NOM) − 0.5 V,
I_OUT(COMP) = 150 µA, –40°C
≤ T_J ≤ 125°C
–40°C ≤ T_J ≤ 125°C
–40°C ≤ T_J ≤ 125°C
−6
−8.3
−8.9
−13
150
150
−4.8
−4.8
−6.6
−6.6
2
220
350
−3.5
−2.5
−4.9
−3
−6
−8.3
−8.9
−13
150
150
−4.8
−4.8
−6.6
−6.6
220
mV
350
−3.5
−2.5 ^%VOUT
−4.9
−3 %V_OUT
(3) See the Typical Characteristics section.
(4) Temperature coefficient is defined as the maximum (worst-case) change divided by the total temperature range.
6
Submit Documentation Feedback
Product Folder Links: LP2989
Copyright © 2005–2015, Texas Instruments Incorporated