LTC1844-1.5 LINER [Linear Technology], LTC1844-1.5 Datasheet - Page 10

• Manufacturer Part Number: LTC1844-1.5
• Description: 150mA, Micropower, Low Noise, VLDO Linear Regulator
• Manufacturer: LINER [Linear Technology]

LTC1844 Series
APPLICATIONS
When V
will follow the curves shown in Figure 7. With V
below V
trying to pull V
and V
and I
I
rent protection circuitry activates and reduces I
than 10 A.
10
OUT
temporarily increases to 30 A until the reverse cur-
OUT
IN
, I
IN
OUT(NOM)
will be 1 A to 2 A. As V
Figure 7. Reverse Current vs Output Voltage
IN
is held constant and V
50
45
40
35
30
25
20
15
10
will be at the normal quiescent current level
5
0
0
OUT
LIMIT BELOW
IN CURRENT
, the LTC1844 will be in current limit
1
up. With V
2.8V
U
OUTPUT VOLTAGE (V)
2
I
INFORMATION
OUT
U
3
OUT
4
I
LTC1844-2.8
T
V
CURRENT FLOWS
INTO PINS
IN
held between V
J
IN
OUT
OUT
= 25 C
= 3.3V
5
W
varied, current flow
is pulled above V
6
1844 F07
7
OUT
U
OUT(NOM)
OUT
to less
held
IN
,
Alternatively, when V
current flow will follow Figure 8’s curves. I
than 10 A at all times except for a brief spike just below
2.7V before the reverse current protection circuitry acti-
vates.
100
Figure 8. Reverse Current vs Input Voltage
90
80
70
60
50
40
30
20
10
0
0
LTC1844-2.8
T
V
CURRENT FLOW
INTO PINS
J
OUT
= 25 C
0.5
= 2.7V
OUT
INPUT VOLTAGE (V)
1.0
I
IN
is held constant and V
1.5
LIMIT ABOVE
IN CURRENT
2.0
I
2.7V
OUT
2.5
1844 F08
OUT
3.0
will be less
IN
varied,
1844ia