lp2985-28d NXP Semiconductors, lp2985-28d Datasheet - Page 7

• Manufacturer Part Number: lp2985-28d
• Description: Lp2985-xx Micropower 150 Ma Low Noise, Low Dropout Linear Regulator
• Manufacturer: NXP Semiconductors

Philips Semiconductors
TYPICAL PERFORMANCE CURVES (continued)
2.8 V product. Except where noted otherwise, T
2003 Oct 31
Micropower 150 mA low noise,
low dropout linear regulator
(I
CH1=10mV
CH1=2v
CH1=2V
O
DC 1 : 1
DC 1 : 1
DC 10 : 1
= 0
Figure 19. Turn-on transient response
Figure 15. Load transient response
Figure 17. Line transient response
V
in
(C
(V
100 mA); (C
= V
i
IN
CH2=50mV
CH2=20mV
= 0; C
CH2=2V
AC 10 : 1
AC 10 : 1
DC 10 : 1
= 3.8
cont
o
= 0
= 1 F; C
V
4.8 V; I
i
IN
= C
= V
C
3.8 V; I
i
C
=0, C
o
cont
i
= C
= 1 F; C
O
n
= 0
= 30 mA);
o
= 0.01 F).
o
O
= 1 F, C
= 1 F, C
V
= 30 mA)
IN
I
V
3.8 V; I
O
, Cont: 2 V/div
o
V
: 50 mA/div
: 50 mV/div
o
V
: 20 mV/div
amb
n
10 s/div
V
100 s/div
IN
n
n
10 s/div
o
= 0.01 F).
= 0.01 F
: 2 V/div
: 2 V/div
= 0.01 F
O
= 30 mA
= 25 C; V
100 mA
GND
4 V
GND
4 V
GND
4 V
GND
SL02142
SL02144
SL02146
IN
= V
o
+ 1 V; V
7
cont
= 2 V; C
(I
O
CH1=10mV
CH1=2V
CH1=2V
DC 1 : 1
DC 1 : 1
DC 10 : 1
= 0
V
Figure 20. Turn-on transient response
in
i
Figure 16. Load transient response
= 1 F; C
Figure 18. Line transient response
(C
= 3.8 V; V
100 mA); (C
(V
i
= 0; C
IN
CH2=50mV
CH2=20mV
CH2=2V
AC 10 : 1
AC 10 : 1
DC 10 : 1
= 3.8
o
V
o
cont
= 1 F; C
IN
= 0.47 F; C
= 3.8 V; V
i
= C
= 0
4.8 V; I
C
i
C
=0, C
o
i
n
= C
cont
= 0.47 F; C
3.8 V; I
= 0.01 F.
O
o
o
= 0
= 0.47 F, C
= 0.47 F, C
n
= 30 mA);
= 0.01 F).
V
3.8 V; I
I
O
O
o
LP2985-XX
V
: 50 mA/div
: 50 mV/div
Cont: 2 V/div
o
= 30 mA)
V
: 20 mV/div
10 s/div
V
100 s/div
IN
n
o
n
10 s/div
n
: 2 V/div
O
: 2 V/div
= 0.01 F
= 0.01 F
= 0.01 F).
= 30 mA
Product data
100 mA
GND
4 V
GND
4 V
GND
4 V
GND
SL02143
SL02145
SL02147