LTC1682-3.3 LINER [Linear Technology], LTC1682-3.3 Datasheet - Page 3

• Manufacturer Part Number: LTC1682-3.3
• Description: Doubler Charge Pumps with Low Noise Linear Regulator
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
range, otherwise specifications are T
PARAMETER
CPO (Charge Pump Output)
Output Resistance
V
V
V
V
V
V
SHDN Input Threshold
SHDN Input Current
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1682C is guaranteed to meet specified performance from
0 C to 70 C and is designed, characterized and expected to meet these
extended temperature limits, but is not tested at – 40 C and 85 C. The
LTC1682I is guaranteed to meet the extended temperature limits.
Note 3: Dropout voltage is the minimum input/output voltage required to
maintain regulation at the specified output current. In dropout the output
voltage will be equal to: V
OUT
OUT
OUT
OUT
OUT
OUT
Shutdown Resistance
Dropout Voltage (Note 3)
Enable Time
Output Noise Voltage
Line Regulation
Load Regulation
CPO
– V
DROPOUT
CONDITIONS
V
V
V
LTC1682, I
LTC1682/LTC1682-3.3, I
LTC1682/LTC1682-5, I
I
LTC1682
LTC1682-3.3
LTC1682-5
V
I
I
SHDN = 0V, Resistance Measured to Ground, V
SHDN = 0V, Resistance Measured to Ground, V
V
SHDN = V
SHDN = 0V
OUT
OUT
OUT
IN
IN
IN
IN
IN
(see Figure 4).
A
= 1.8V, I
= 3V, I
= 4.4V, I
= 3V to 4V, I
= 1.8V to 4.4V
= 10mA
= 1mA to 10mA
= 1mA to 50mA (Note 4)
= 25 C. SHDN = V
IN
OUT
OUT
OUT
OUT
= 10mA
= 10mA, V
= 10mA
= 10mA
OUT
I
I
I
I
I
I
OUT
OUT
OUT
OUT
OUT
OUT
= 0mA (Note 6)
OUT
= 10mA, 10Hz f 100kHz, V
= 10mA, 10Hz f 2.5MHz, V
= 10mA, 10Hz f 100kHz, C
= 10mA, 10Hz f 2.5MHz, C
= 10mA, 10Hz f 100kHz, C
= 10mA, 10Hz f 2.5MHz, C
OUT
OUT
IN
= 10mA, V
= 3V; C1 = 0.22 F; C2, C3, C4 = 4.7 F, unless otherwise noted.
The
= 10mA, V
= 2.57V (Note 5)
denotes specifications that apply over the full operating temperature
OUT
OUT
LTC1682/LTC1682-3.3/LTC1682-5
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.
Note 5: Limited by the LDO disable switch point of 1.45V
Note 6: The LTC1682 is set to 5V. The feedback current is 25 A.
= 5V
= 3.3V
IN
IN
= 1.8V
= 4.4V
OUT
FILT
FILT
OUT
FILT
FILT
= 5V
= 1nF
= 1nF
= 5V
= 1nF
= 1nF
MIN
0.4
– 1
– 1
TYP
100
800
500
600
150
18
13
11
75
50
88
58
64
10
50
2
5
3
1
MAX
160
120
350
150
IN
1.6
30
20
17
90
20
10
1
1
.
UNITS
V
V
V
3
V
V
V
RMS
RMS
RMS
mV
mV
mV
mV
mV
mV
ms
P-P
P-P
P-P
V
A
A