Datasheet

LP38691-ADJ, LP38693-ADJ
www.ti.com SNVS324I –JANUARY 2005–REVISED APRIL 2013
Absolute Maximum Ratings
(1)(2)
Storage Temperature Range −65°C to +150°C
Lead Temp. (Soldering, 5 seconds) 260°C
ESD Rating
(3)
2 kV
Power Dissipation
(4)
Internally Limited
V(max) All pins (with respect to GND) -0.3V to 12V
I
OUT
(5)
Internally Limited
Junction Temperature −40°C to +150°C
(1) Absolute maximum ratings indicate limits beyond which damage to the component may occur. Operating ratings indicate conditions for
which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications, see Electrical
Characteristics. 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 TI Office/ Distributors for availability and specifications.
(3) ESD is tested using the human body model which is a 100pF capacitor discharged through a 1.5k resistor into each pin.
(4) At elevated temperatures, device power dissipation must be derated based on package thermal resistance and heatsink values (if a
heatsink is used). The junction-to-ambient thermal resistance (θ
J-A
) for the SOT-223 is approximately 125 °C/W for a PC board mounting
with the device soldered down to minimum copper area (less than 0.1 square inch). If one square inch of copper is used as a heat
dissipator for the SOT-223, the θ
J-A
drops to approximately 70 °C/W. The θ
J-A
values for the WSON package are also dependent on
trace area, copper thickness, and the number of thermal vias used (refer to TI AN-1187 Application Report and the WSON MOUNTING
section in this datasheet). If power dissipation causes the junction temperature to exceed specified limits, the device will go into thermal
shutdown.
(5) If used in a dual-supply system where the regulator load is returned to a negative supply, the output pin must be diode clamped to
ground.
Operating Ratings
V
IN
Supply Voltage 2.7V to 10V
Operating Junction −40°C to +125°C
Temperature Range
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
= V
OUT
+ 1V, C
IN
= C
OUT
= 10 µF, I
LOAD
= 10mA. Min/Max limits are specified through testing,
statistical correlation, or design.
Symbol Parameter Conditions Min Typ
(1)
Max Units
V
IN
= 2.7V 1.225 1.25 1.275
V
ADJ
ADJ Pin Voltage V
3.2V ≤ V
IN
≤ 10V
1.200 1.25 1.300
100 µA < I
L
< 0.5A
ΔV
O
/ΔV
IN
Output Voltage Line Regulation
(2)
V
O
+ 0.5V ≤ V
IN
≤ 10V
0.03 0.1 %/V
I
L
= 25mA
ΔV
O
/ΔI
L
Output Voltage Load Regulation
(3)
1 mA < I
L
< 0.5A
1.8 5 %/A
V
IN
= V
O
+ 1V
(V
O
= 2.5V)
80 145
I
L
= 0.1A
430 725
I
L
= 0.5A
(V
O
= 3.3V)
65 110
V
IN
- V
O
Dropout Voltage
(4)
I
L
= 0.1A mV
330 550
I
L
= 0.5A
(V
O
= 5V)
45 100
I
L
= 0.1A
250 450
I
L
= 0.5A
I
Q
Quiescent Current V
IN
≤ 10V, I
L
= 100 µA - 0.5A 55 100
V
EN
≤ 0.4V,
0.001 1 µA
(LP38693-ADJ Only)
I
L
(MIN) Minimum Load Current V
IN
- V
O
≤ 4V 100
(1) Typical numbers represent the most likely parametric norm for 25°C operation.
(2) Output voltage line regulation is defined as the change in output voltage from nominal value resulting from a change in input voltage.
(3) Output voltage load regulation is defined as the change in output voltage from nominal value as the load current increases from 1mA to
full load.
(4) Dropout voltage is defined as the minimum input to output differential required to maintain the output within 100mV of nominal value.
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