LP2980-ADJ_15 Datasheet, PDF (3/18 Pages) Texas Instruments – LP2980-ADJ Micropower 50 mA Ultra Low-Dropout Adjustable Voltage Regulator in SOT-23

LP2980-ADJ
www.ti.com
SNVS001E – APRIL 2000 – REVISED APRIL 2013
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS⁽¹⁾⁽²⁾
Storage Temperature Range
Operating Junction Temperature Range
Lead Temp. (Soldering, 5 seconds)
ESD Rating ⁽³⁾
Power Dissipation ⁽⁴⁾
Input Supply Voltage (Survival)
Input Supply Voltage (Operating)
Shutdown Input Voltage (Survival)
Output Voltage (Survival) ⁽⁵⁾
I_OUT (Survival)
Input-Output Voltage (Survival) ⁽⁶⁾
−65 to +150°C
−40 to +125°C
260°C
2 kV
Internally Limited
−0.3V to +16V
2.5V to +16V
−0.3V to +16V
−0.3V to 16V
Short Circuit Protected
−0.3V to 16V
(1) Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply
when operating the device outside of its rated operating conditions.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) The ESD rating of pins 3 and 4 is 1 kV.
(4) The maximum allowable power dissipation is a function of the maximum junction temperature, T_J(MAX), the junction-to-ambient thermal
resistance, θ_J-A, and the ambient temperature, T_A. The maximum allowable power dissipation at any ambient temperature is calculated
using:
. The value of θ_J-A for the SOT-23 package is 300°C/W. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown.
(5) If used in a dual-supply system where the regulator load is returned to a negative supply, the LP2980-ADJ output must be diode-
clamped to ground.
(6) The output PNP structure contains a diode between the V_IN and V_OUT terminals that is normally reverse-biased. Reversing the polarity
from V_IN to V_OUT will turn on this diode (see APPLICATION HINTS).
ELECTRICAL CHARACTERISTICS
Limits in standard typeface are for T_J = 25°C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: V_IN = 4.3V, V_OUT = 3.3V, I_L = 1 mA, C_IN = 1 μF, C_OUT = 2.2 μF, V_ON/OFF = 2V.
Symbol
Parameter
Conditions
LP2980I-ADJ ⁽¹⁾
Typ
Units
Min
Max
V_REF
Reference Voltage
ΔV_REF/ΔV_IN
V_IN–V_O
Reference Voltage Line
Regulation
Dropout Voltage ⁽²⁾
1 mA < I_L < 50 mA
V_OUT + 1 ≤ V_IN ≤ 16V
2.5V ≤ V_IN ≤ 16V
I_L = 0
1.225
1.213
1.237
V
1.225
1.206
1.182
1.243
1.268
3
6.0
15.0
mV
1
3
5
I_L = 1 mA
I_L = 10 mA
7
10
15
mV
40
60
90
I_L = 50 mA
120
150
225
(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
1V differential.
Copyright © 2000–2013, Texas Instruments Incorporated
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