LP2989_15 Datasheet, PDF (5/34 Pages) Texas Instruments – LP2989 Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output Capacitors

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6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
Operating junction temperature
Operating input supply voltage
LP2989
SNVS083O – FEBRUARY 2005 – REVISED MARCH 2015
MIN
MAX
UNIT
–40
125
°C
2.1
16
V
6.4 Thermal Information
THERMAL METRIC⁽¹⁾
WSON (NGN)
LP2989
SOIC (D)
VSSOP (DGK) UNIT
8 PINS
8 PINS
8 PINS
R_θJA
R_θJC(top)
R_θJB
ψ_JT
ψ_JB
R_θJC(bot)
Junction-to-ambient thermal resistance, High-K
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
34.8
114.5
156.5
28.4
61.1
51.0
12.0
55.6
76.5
°C/W
0.2
9.7
4.9
12.2
54.9
75.2
1.3
n/a
n/a
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
6.5 Electrical Characteristics
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
−0.75
0.75 −1.25
1.25
1 mA < I_OUT < 500 mA,
V_OUT(NOM) + 1 V ≤ V_IN ≤ 16
−1.5
1.5 −2.5
2.5
V
V_OUT
Output voltage tolerance
ΔV_OUT/ΔV_IN
Output voltage line
regulation
ΔV_OUT/ΔI_OUT Load regulation
1 mA < I_OUT < 500 mA,
V_OUT(NOM) + 1 V ≤ V_IN ≤ 16
V, –40°C ≤ T_J ≤ 125°C
1 mA < I_OUT < 500 mA,
V_OUT(NOM) + 1 V ≤ V_IN ≤ 16
V, −25°C ≤ T_J ≤ 125°C
V_OUT(NOM) + 1 V ≤ V_IN ≤ 16
V
V_OUT(NOM) + 1 V ≤ V_IN ≤ 16
V, –40°C ≤ T_J ≤ 125°C
1 mA < I_OUT < 500 mA
I_OUT = 100 µA
I_OUT = 100 µA, –40°C ≤ T_J ≤
125°C
−4
2.5
−5
3.5 ^%VNOM
−3.5
2.5 −4.5
3.5
0.005 0.014
0.005
0.4
1
1
0.032
3
4
0.005
0.005
0.4
1
1
0.014
%/V
0.032
%V_NOM
3
mV
4
V_IN – V_OUT Dropout voltage⁽²⁾
I_OUT = 200 mA
I_OUT = 200 mA, –40°C ≤ T_J
≤ 125°C
150
200
150
300
150
200
mV
150
300
I_OUT = 500 mA
I_OUT = 500 mA, –40°C ≤ T_J
≤ 125°C
310
425
310
650
310
425
mV
310
650
(1) Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using
Statistical Quality Control (SQC) methods. The limits are used to calculate TI’s Average Outgoing Quality Level (AOQL).
(2) Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a
1-V differential.
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