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Low Dropout Regulators
Quick Reference Guide
Low dropout linear regulators (LDOs) are a simple, effective way to regulate an output voltage powered from a higher
input voltage. The most critical LDO parameters are input voltage range, output voltage, output current, dropout
voltage, packaging size, power dissipation capability, and noise. In this quick reference guide you will find TI’s most
popular LDOs and linear voltage regulators for any kind of application, including industrial, personal electronics,
communications equipment and automotive.
To see the complete LDO portfolio:
www.ti.com/ldo
LDO
1 2 3 4 5 6 7 8 9
10
20
30
40 50 60 70 80 90
100
4+
3
1.5
1
0.8
2
LP38690
TPS743 – Vdo: 55mV
TPS748 – 3x3mm SON
TPS7A83 – Noise: 6µVRMS, V
DO
: 85mV
TPS7A85 – Noise: 4.4µV
RMS
, VDO: 150mV
TPS7A84 – Noise: 4.4µV
RMS
, V
DO
: 110mV
TPS7A35 – Noise: 3.8µV
RMS
LP3878 – Noise: 18µV
RMS
TPS7A33 – Noise: 16µV
RMS
TPS7A47 – Noise: 4µV
RMS
TPS7A81 – Noise: 23µV
RMS
TPS7A88 – Noise: 3.8µV
RMS
, Acc: 1%
TPS7A89 – Noise: 3.8µV
RMS
, Acc: 1%
LP38798 – Noise: 5µV
RMS
TLV1117 – Acc: 1.6% over temp
TPS7A45 – Noise: 35µV
RMS
TPS759 – Acc: 3% over temp
LMS1585A – Acc: 2% over temp
LM138/338 – Temp: -55 to 150°C (LM138)
TPS749 – V
DO
: 120mV
LP38853 – V
DO
: 240mV
TPS744 – V
DO
: 115mV
LM1084 – Acc: 2% over temp
LM1085 – Acc: 2% over temp
LM117HV/317HV – Temp: -55 to 150°C (LM117HV)
LM137/337 – Temp: -55 to 150°C (LM137)
TPS54122
TPS54120 – Noise: 17µV
RMS
LM2990
TPS7A37 – Vdo: 130mV, 1%
V
IN
(V)
I
OUT
(A)
• Low I
Q
(<15μA)
• Low Noise (
<
30μV
RMS
)
• Low Dropout
• Small Package
• Negative Rail
• Dual Channel
•
DC/DC + LDO
–
–
LDOs for Industrial, Personal Electronics, Communications Equipment and more
