LP2986 Datasheet, PDF (6/33 Pages) National Semiconductor (TI) – Micropower, 200 mA Ultra Low-Dropout Fixed or Adjustable Voltage Regulator

LP2986
SNVS137I – MARCH 1999 – REVISED SEPTEMBER 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
LP2986AI-X.X ⁽¹⁾
MIN TYP MAX
LP2986I-X.X ⁽¹⁾
MIN TYP MAX
UNIT
I_GND
Ground pin current
I_OUT(PK)
I_OUT(MAX)
e_n
Peak output current
Short-circuit current
Output noise voltage
(RMS)
ΔV_OUT/ΔV_IN Ripple rejection
ΔV_OUT/ΔT_D
Output voltage
temperature coefficient
I_OUT = 100 µA
I_OUT = 100 µA
–40°C ≤ T_J ≤ 125°C
I_OUT = 75 mA
I_OUT = 75 mA
–40°C ≤ T_J ≤ 125°C
I_OUT = 200 mA
I_OUT = 200 mA
–40°C ≤ T_J ≤ 125°C
V_SD < 0.3 V
V_SD < 0.3 V
–40°C ≤ T_J ≤ 125°C
V_OUT ≥ V_OUT(NOM) − 5%
R_L = 0 (steady state)⁽³⁾
BW = 300 Hz to 50 kHz,
C_OUT = 10 µF
ƒ = 1 kHz, C_OUT = 10 µF
See ⁽⁴⁾
100
120
150
500
800
1400
1
2.1
3.7
0.05
1.5
250
400
400
160
65
20
100
120
110
150
µA
500
800
1400
1
2.1
mA
3.7
0.05
µA
1.5
250
400
mA
400
mA
160
µV_RMS
65
dB
20
ppm/°C
FEEDBACK PIN
1.21 1.23 1.25
1.2 1.23 1.26
V_FB
FEEDBACK pin voltage –40°C ≤ T_J ≤ 125°C
See ⁽⁵⁾
1.2
1.19
1.26 1.19
1.28 1.18
1.27 V
1.29
ΔV_FB/ΔT
FEEDBACK pin voltage
temperature coefficient
See ⁽⁶⁾
20
20
ppm/°C
I_FB
ΔI_FB/ΔT
FEEDBACK pin bias
current
FEEDBACK pin bias
current temperature
coefficient
I_OUT = 200 mA
I_OUT = 200 mA
–40°C ≤ T_J ≤ 125°C
See ⁽⁶⁾
150
330
760
0.1
150
330
nA
760
0.1
nA/°C
SHUTDOWN INPUT
V_H = Output ON
V_H = Output ON
V_SD
SD Input voltage⁽⁷⁾
–40°C ≤ T_J ≤ 125°C
V_L = Output OFF
V_L = Output OFF
–40°C ≤ T_J ≤ 125°C
V_SD = 0 V
I_SD
SD Input current
V_SD = 0 V, –40°C ≤ T_J ≤
125°C
V_SD = 5 V
V_SD = 5 V, –40°C ≤ T_J ≤
125°C
1.4
1.6
0.55
0.18
0
–1
5
15
1.4
V
1.6
0.55
µA
0.18
0
V
–1
5
µA
15
(3) See the Typical Characteristics section.
(4) Temperature coefficient is defined as the maximum (worst-case) change divided by the total temperature range.
(5) V_FB ≤ V_OUT ≤ (V_IN − 1), 2.5 V ≤ V_IN ≤ 16 V, 100 μA ≤ I_L ≤ 200 mA, T_J ≤ 125°C.
(6) Temperature coefficient is defined as the maximum (worst-case) change divided by the total temperature range.
(7) To prevent mis-operation, the SHUTDOWN pin must be driven by a signal that swings above V_H and below V_L with a slew rate not less
than 40 mV/μs (see Application and Implementation).
6
Submit Documentation Feedback
Product Folder Links: LP2986
Copyright © 1999–2015, Texas Instruments Incorporated