LP38502-ADJ Datasheet, PDF (5/27 Pages) Texas Instruments – LP3850x-ADJ, LP3850xA-ADJ 1.5-A Flexcap Low-Dropout Linear Regulatorfor 2.7-V to 5.5-V Inputs

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LP38500-ADJ, LP38502-ADJ
SNVS539G – NOVEMBER 2007 – REVISED JUNE 2015
6.5 Electrical Characteristics
Unless otherwise specified V_IN = 3.3 V, I_OUT = 10 mA, C_IN = 10 μF, C_OUT = 10 μF, V_EN = V_IN, V_OUT = 1.8 V. Minimum and
maximum limits apply over the junction temperature (T_J) range of –40°C to +125°C and are specified through test, design, or
statistical correlation. Typical values represent the most likely parametric norm at T_J = 25°C, and are provided for reference
purposes only.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
V_ADJ
Adjust pin voltage⁽¹⁾
V_ADJ
Adjust pin voltage (A grade)⁽¹⁾
I_ADJ
ADJUST pin bias current
V_DO
Dropout voltage⁽²⁾
ΔV_OUT /
ΔV_IN
Output voltage line regulation⁽¹⁾⁽³⁾
ΔV_OUT /
ΔI_OUT
Output voltage load regulation⁽¹⁾
(4)
I_GND
Ground pin current in normal
operation mode
I_DISABLED Ground pin current
I_OUT(PK)GN
D
I_SC
Peak output current
Short-circuit current
ENABLE INPUT (LP38502 Only)
2.7 V ≤ V_IN ≤ 5.5 V
10 mA ≤ I_OUT ≤ 1.5 A
T_J = 25°C
2.7 V ≤ V_IN ≤ 5.5 V
10 mA ≤ I_OUT ≤ 1.5 A
2.7 V ≤ V_IN ≤ 5.5 V
10 mA ≤ I_OUT ≤ 1.5 A
T_J = 25°C
2.7 V ≤ V_IN ≤ 5.5 V
10 mA ≤ I_OUT ≤ 1.5 A
2.7 V ≤ V_IN ≤ 5.5 V
T_J = 25°C
2.7 V ≤ V_IN ≤ 5.5 V
I_OUT = 1.5 A
T_J = 25°C
I_OUT = 1.5 A
2.7 V ≤ V_IN ≤ 5.5 V
T_J = 25°C
2.7 V ≤ V_IN ≤ 5.5 V
10 mA < I_OUT < 1.5 A
T_J = 25°C
10 mA < I_OUT < 1.5 A
10 mA < I_OUT < 1.5 A
T_J = 25°C
10 mA < I_OUT < 1.5 A
V_EN < V_IL(EN), T_J = 25°C
V_EN < V_IL(EN)
V_OUT ≥ V_OUT(NOM) – 5%
V_OUT = 0 V, T_J = 25°C
V_OUT = 0 V
0.584
0.575
0.596
0.587
2
0.605
0.605
50
220
0.04
0.05
0.18
0.33
2
0.025
3.6
3.7
0.626
V
0.635
0.614
V
0.623
nA
750
nA
275
mV
375
mV
%/V
%/V
%/A
%/A
3.5
mA
4.5
0.125
µA
15
A
A
V_IH(EN)
V_IL(EN)
t_d(off)
t_d(on)
I_IH(EN)
I_IL(EN)
Enable logic high
Enable logic low
Turnoff delay
Turnon delay
Enable pin high current
Enable pin low current
V_OUT = ON
V_OUT = OFF
Time from V_EN < V_IL(EN) to V_OUT =
OFF
I_LOAD = 1.5 A
Time from V_EN >V_IH(EN) to V_OUT = ON
I_LOAD = 1.5A
V_EN = V_IN
V_EN = 0 V
1.4
V
0.65
25
µs
25
µs
1
nA
0.1
(1) The line and load regulation specification contains only the typical number. However, the limits for line and load regulation are included
in the adjust voltage tolerance specification.
(2) Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. For
any output voltage less than 2.5V, the minimum VIN operating voltage is the limiting factor.
(3) Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage.
(4) Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in the load current.
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