LTC1928-5 LINER [Linear Technology], LTC1928-5 Datasheet - Page 3

• Manufacturer Part Number: LTC1928-5
• Description: Doubler Charge Pump with Low Noise Linear Regulator in ThinSOT
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
Note 4: Operating conditions are limited by maximum junction
temperature. The regulated output specification will not apply for all
possible combinations of input voltage and output current. When
operating at maximum input voltage, the output current range may be
limited. When operating at maximum output current, the input voltage
range may be limited.
TYPICAL PERFOR A CE CHARACTERISTICS
35
30
25
20
15
10
5
2
0
5
4
3
2
1
0
2.5
CPO Output Resistance vs V
Shutdown to Enable Timing
(Figure 5)
T
C
I
OUT
A
FLY
= 25 C
= 10mA
= 0.47 F
3.0
200 s/DIV
V
IN
3.5
(V)
T
V
V
I
C
OUT
A
IN
OUT
OUT
= 25 C
= 3V
= 10mA
= 5V
= C
4.0
CPO
W
IN
= 4.7 F
19285 G01
19285 G04
U
4.5
9
8
7
6
5
4
3
2
0
5
4
3
2
1
0
2.5
(A) THE MAXIMUM GENERATED NO LOAD
(B) THE MINIMUM ALLOWABLE CPO VOLTAGE,
Min and Max V
Enable to Shutdown Timing
(Figure 5)
T
NO LOAD
T
V
V
C
A
A
IN
OUT
OUT
= 25 C
CPO VOLTAGE
AT FULL LOAD, TO ENSURE THAT THE LDO
IS NOT DISABLED
= 25 C
= 3V
= 5V
= 4.7 F
V
3.0
CPO
(A)
= 2(V
1ms/DIV
V
CPO
IN
IN
3.5
)
Note 5: CN/SHDN must be driven with a source impedance of at least
100 (R
and may be connected through a low switch impedance to V
be a large amount of current (V
occurs after which the charge pump switches at CN/SHDN become high
impedance and the current will fall to < 8 A.
(V)
vs V
(B)
V
CPO
IN
= 1.45(V
4.0
SOURCE
19285 G05
IN
19285 G02
) to prevent damage to the part. This pin is multiplexed
)
4.5
5.040
5.030
5.020
5.010
5.000
4.990
4.980
–10
–5
10
15
10
IN
5
0
5
0
–50
/R
V
0
V
OUT
SOURCE
OUT
T
V
V
C
V
I
A
OUT
IN
OUT
OUT
IN
–25
= 25 C
= 3V
= 3V
Voltage vs Temperature
50
= 10mA
Transient Response
= 5V
= 4.7 F
) until the shutdown state
0
TEMPERATURE ( C)
100
TIME ( s)
25
LTC1928-5
150
50
200
IN
75
. There may
250
100
19285 G06
19285 G03
3
125
300