LP3853ET-33 Datasheet, PDF (9/25 Pages) Texas Instruments – LP3853/LP3856 3A Fast Response Ultra Low Dropout Linear Regulators

LP3853, LP3856
www.ti.com
SNVS173G – FEBRUARY 2003 – REVISED APRIL 2013
Typical Performance Characteristics (continued)
Unless otherwise specified: T_J = 25°C, C_OUT = 10µF, C_IN = 10µF, S/D pin is tied to V_IN, V_OUT = 2.5V,
V_IN
=
V_O(NOM)
+
1V,
I_L
= 10
Load
mA.
Transient
Response
C_IN = C_OUT = 100µF, TANTALUM
Load Transient Response
C_IN = 4 x 10µF CERAMIC, C_OUT = 3 x 10µF CERAMIC
VOUT
100mV/DIV
V_OUT
100 mV/DIV
1
T
V_OUT = 2.5V
ILOAD
3A/DIV
TIME (50Ps/DIV)
Figure 23.
Load Transient Response
C_IN = 4 x 10µF CERAMIC, C_OUT = 3 x 10µF CERAMIC
V_OUT
100 mV/DIV
T
1
V_OUT = 2.5V
I_OUT
1A/DIV
T
2
TIME (5 Ps/DIV)
Figure 24.
Load Transient Response
C_IN = 2 x 10µF CERAMIC, C_OUT = 2 x 10µF CERAMIC
V_OUT
100 mV/DIV
1
T
V_OUT = 2.5V
I_OUT
1A/DIV
2
I_OUT
T
1A/DIV
T
2
TIME (1 Ps/DIV)
Figure 25.
TIME (2 Ps/DIV)
Figure 26.
Load Transient Response
C_IN = 2 x 10µF CERAMIC, C_OUT = 2 x 10µF CERAMIC
1
T
V_OUT
@ 2.5V
I_OUT
@ 1A
T
2
I_OUT
@ 1A
TIME (1 Ps/DIV)
Figure 27.
Copyright © 2003–2013, Texas Instruments Incorporated
Product Folder Links: LP3853 LP3856
Submit Documentation Feedback
9