LTC1258CS8-4.1 データシートの表示（PDF） - Linear Technology
部品番号
コンポーネント説明
メーカー
LTC1258CS8-4.1 Datasheet PDF : 8 Pages
| |||
TYPICAL PERFORMANCE CHARACTERISTICS
LTC1258 Series
LTC1258-2.5 Output Voltage vs
Input Voltage
2.5010
TA = 25°C
2.5005
LTC1258-2.5 Input Current vs
Input Voltage
7
TA = 25°C
6
2.5000
5
2.4995
2
46
8 10 12 14
INPUT VOLTAGE (V)
1258 G07
LTC1258-2.5 0.1Hz to 10Hz Noise
VIN = 2.7V
5μV/DIV
1SEC/DIV
1258 G10
4
2
4
6
8 10 12 14
INPUT VOLTAGE (V)
1258 G08
LTC1258-5 Input Current vs Input
Voltage in Dropout
1400
1200
1000
TA = –55°C
TA = 25°C
TA = 125°C
800
600
400
200
0
0 1 2 3 4 5 6 7 8 9 10
INPUT VOLTAGE (V)
1258 G11
LTC1258-2.5 PSRR vs Frequency
60
VIN = 2.7V
50
40
30
20
10
0
10
100
1k
10k
FREQUENCY (Hz)
1258 G09
LTC1258-2.5 Input Current vs
Input Voltage in Dropout
250
200
TA = 125°C
150
TA = 25°C
100
TA = –55°C
50
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
INPUT VOLTAGE (V)
1258 G12
PIN FUNCTIONS
OUT (Pin 1): Reference Output. The output can source
up to 10mA and sink up to 2mA. It is stable with output
bypass capacitor ranging from 0μF to 1μF.
IN (Pin 2): Positive Supply. Bypassing with a 0.1μF ca-
pacitor is recommended if the output loading changes.
(VOUT + 0.2V) ≤ VIN ≤ 12.6V.
DNC (Pin 3): (LTC1258-2.5/LTC1258-3/LTC1258-4.1/
LTC1258-5) Do Not Connect. Connected internally for post
package trim. This pin must be left unconnected.
FB (Pin 3): (LT1258) Resistor Divider Feedback Pin. Con-
nect a resistor divider from OUT to GND and the center
tap to FB. This pin sets the output potential.
VOUT
=
2.385V
⎛
⎝⎜
R1+ R2⎞
R2 ⎠⎟
; R1
is connected from
OUT
to
FB and R2 from FB to GND.
GND (Pin 4): Negative Supply or Ground Connection.
DNC (Pins 5, 6, 7, 8): Do Not Connect. Connected in-
ternally for post package trim. These pins must be left
unconnected.
1258sfb
5
Share Link: 