LP2981 Datasheet, PDF (4/17 Pages) National Semiconductor (TI) – Micropower 100 mA Ultra Low-Dropout Regulator

LP2981
SLVS521F – JULY 2004 – REVISED AUGUST 2008 ......................................................................................................................................................... www.ti.com
Absolute Maximum Ratings⁽¹⁾
over virtual junction temperature range (unless otherwise noted)
V_IN
V_ON/OFF
V_OUT
I_OUT
θ_JA
T_J
T_stg
ESD
Continuous input voltage range⁽²⁾
ON/OFF input voltage range
Output voltage range⁽³⁾
Output current⁽⁴⁾
Package thermal impedance⁽⁴⁾⁽⁵⁾
Operating virtual junction temperature
Storage temperature range
Electrostatic discharge protection
Human-Body Model (HBM)
Machine Model (MM)
MIN
MAX
–0.3
16
–0.3
16
–0.3
9
Internally limited
(short-circuit protected)
206
150
–65
150
2000
200
UNIT
V
V
V
°C/W
°C
°C
V
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The PNP pass transistor has a parasitic diode connected between the input and output. This diode normally is reverse biased
(V_IN > V_OUT), but will be forward biased if the output voltage exceeds the input voltage by a diode drop (see Application Information for
more details).
(3) If load is returned to a negative power supply, the output must be diode clamped to GND.
(4) Maximum power dissipation is a function of T_J(max), θ_JA, and T_A. The maximum allowable power dissipation at any allowable ambient
temperature is P_D = (T_J(max) – T_A)/θ_JA. Operating at the absolute maximum T_J of 150°C can affect reliability.
(5) The package thermal impedance is calculated in accordance with JESD 51-7.
Recommended Operating Conditions
V_IN
V_ON/OFF
V_IN – V_OUT
I_OUT
T_J
Supply input voltage
ON/OFF input voltage
Input-output differential
Output current
Virtual junction temperature
(1) Minimum V_IN of 2.2 V is needed for proper biasing of LDO control circuitry.
MIN
2.2 ⁽¹⁾
0
0.7
–40
MAX
16
V_IN
11
100
125
UNIT
V
V
V
mA
°C
4
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