LP2985-N_15 Datasheet, PDF (6/41 Pages) Texas Instruments – LP2985-N Micropower 150-mA Low-Noise Ultra-Low-Dropout Regulator in SOT-23 and DSBGA Packages Designed for Use with Very Low ESR Output Capacitors

LP2985-N
SNVS018X – MARCH 2000 – REVISED MAY 2015
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7.4 Thermal Information
THERMAL METRIC⁽¹⁾
SOT-23
LP2985-N
DSBGA (YZR) DSBGA (YPB)
UNIT
5 PINS
R_θJA
R_θJC(top)
R_θJB
ψ_JT
ψ_JB
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
175.7
78
30.8
2.8
30.3
180
1
109.3
7.1
109.3
178.8
2.1
146.3
1.9
146.3
°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
7.5 Electrical Characteristics
Unless otherwise specified: V_IN = V_O(NOM) + 1 V, I_L = 1 mA, C_IN = 1 µF, C_OUT = 4.7 µF, V_ON/OFF = 2 V, T_J = 25°C.⁽¹⁾
PARAMETER
TEST CONDITIONS
TYP
LP2985AI-X.X ⁽²⁾
MIN
MAX
LP2985I-X.X ⁽²⁾
MIN MAX
ΔV_O
ΔV_O/ΔV_IN
V_IN–V_O
I_L = 1 mA
1 mA ≤ I_L ≤ 50 mA
1 mA ≤ I_L ≤ 50 mA, –40°C ≤ T_J
Output voltage tolerance ≤ 125°C
Output voltage
Line regulation
Dropout voltage⁽³⁾
1 mA ≤ I_L ≤ 150 mA
1 mA ≤ I_L ≤ 150 mA, –40°C ≤
T_J ≤ 125°C
V_O(NOM)+1 V ≤ V_IN ≤ 16 V
V_O(NOM)+1 V ≤ V_IN ≤ 16 V,
–40°C ≤ T_J ≤ 125°C
I_L = 0
I_L = 0, –40°C ≤ T_J ≤ 125°C
I_L = 1 mA
I_L = 1 mA, –40°C ≤ T_J ≤ 125°C
I_L = 10 mA
I_L = 10 mA, –40°C ≤ T_J ≤
125°C
0.007
1
7
40
−1
1
−1.5
1.5
−2.5
2.5
−2.5
2.5
−3.5
3.5
0.014
0.032
3
5
10
15
60
90
–1.5
1.5
–2.5
2.5
–3.5
3.5
–3
3
–4
4
0.014
0.032
3
5
10
15
60
90
I_L = 50 mA
120
I_L = 50 mA, –40°C ≤ T_J ≤
125°C
150
150
225
225
I_L = 150 mA
280
I_L = 150 mA, –40°C ≤ T_J ≤
125°C
350
350
575
575
UNIT
%V_NOM
%/V
mV
(1) Exposing the DSBGA device to direct sunlight will cause misoperation. See DSBGA Light Sensitivity for additional information.
(2) Limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation using Statistical
Quality Control (SQC) methods. The limits are used to calculate TI's Average Outgoing Quality Level (AOQL).
(3) 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.
6
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