LTC3260 Просмотр технического описания (PDF) - Linear Technology
Номер в каталоге
Компоненты Описание
Список матч
LTC3260 Datasheet PDF : 18 Pages
| |||
LTC3260
Typical Performance Characteristics
(TA = 25°C, CFLY = 1µF, CIN = COUT = CLDO+ = CLDO– = 10µF unless otherwise noted)
ADJ– Pin Voltage vs Temperature
LDO– Dropout Voltage
vs Temperature
–1.176
400
350
IVLODUOT–
=
=
–12V
50mA
–1.188
300
250
–1.200
200
150
–1.212
100
50
–1.224
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3260 G16
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3260 G17
LDO– Power Supply Rejection
60
50
40
30
20
10
IVVLOLDDUOOT––===–––655.05VmV A
0
VCRLDIPOP–LE=
= 50mVRMS
10µF
0.1
1
10
100
FREQUENCY (kHz)
1000
3260 G18
LDO– Load Regulation
–1.1994
–1.1996
VOUT = –12V
UNITY GAIN
–1.1998
–1.2000
–1.2002
–1.2004
–1.2006
0.1
1
10
ILDO– (mA)
LDO– Load Transient
LDO Rejection of VOUT Ripple
LDO+ Load Transient
VLDO+
10mV/DIV
AC-COUPLED
VLDO–
10mV/DIV
AC-COUPLED
VOUT
10mV/DIV
AC-COUPLED
VLDO+
10mV/DIV
AC-COUPLED
ILDO+
20mA
2mA
100
3260 G19
VVVILLNDDOO=+–1==5V1–21V2V
fOSC = 500kHz
IILLDDOO+–
= 50mA
–50mA
1µs/DIV
3260 G20
VVILNDO=+1=2V5V
40µs/DIV
VOUT Transient (Burst Mode
Operation, MODE = H)
VOUT Transient
(MODE = Low to High)
3260 G21
VLDO–
10mV/DIV
AC-COUPLED
VOUT
500mV/DIV
AC-COUPLED
VOUT
500mV/DIV
AC-COUPLED
ILDO–––220mmAA
VVILNDO=–1=2V–5V
40µs/DIV
REFER TO FIGURE 3
IOUT–––550mmAA
3260 G22
VIN = 12V
fOSC = 500kHz
2ms/DIV
MODE
3260 G23
VIN = 12V
fOSC = 500kHz
IOUT = –5mA
2ms/DIV
3260 G24
3260fa
6
Share Link: 