LTC1878 Просмотр технического описания (PDF) - Linear Technology
Номер в каталоге
Компоненты Описание
производитель
LTC1878 Datasheet PDF : 16 Pages
| |||
LTC1878
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (VIN)...........................– 0.3V to 7V
ITH, PLL LPF Voltage ................................– 0.3V to 2.7V
RUN, VFB Voltages ...................................... – 0.3V to VIN
SYNC/MODE Voltage .................................. – 0.3V to VIN
SW Voltage ................................... – 0.3V to (VIN + 0.3V)
P-Channel MOSFET Source Current (DC) ........... 800mA
N-Channel MOSFET Sink Current (DC) ............... 800mA
Peak SW Sink and Source Current ........................ 1.5A
Operating Ambient Temperature Range
(Note 2) .................................................. – 40°C to 85°C
Junction Temperature (Note 3) ............................ 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
RUN 1
ITH 2
VFB 3
GND 4
8 PLL LPF
7 SYNC/MODE
6 VIN
5 SW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 150°C/ W
ORDER PART
NUMBER
LTC1878EMS8
MS8 PART MARKING
LTNX
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
VIN = 3.6V unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
IVFB
VFB
∆VOVL
∆VFB
VLOADREG
VIN
IQ
fOSC
fSYNC
IPLL LPF
RPFET
RNFET
Feedback Current
Regulated Output Voltage
Output Overvoltage Lockout
Reference Voltage Line Regulation
Output Voltage Load Regulation
Input Voltage Range
Input DC Bias Current
Pulse Skipping Mode
Burst Mode Operation
Shutdown
Oscillator Frequency
SYNC Capture Range
Phase Detector Output Current
Sinking Capability
Sourcing Capability
RDS(ON) of P-Channel MOSFET
RDS(ON) of N-Channel MOSFET
(Note 4)
(Note 4) 0°C ≤ TA ≤ 85°C
(Note 4) – 40°C ≤ TA ≤ 85°C
∆VOVL = VOVL – VFB
VIN = 2.65V to 6V (Note 4)
Measured in Servo Loop; VITH = 0.9V to 1.2V
Measured in Servo Loop; VITH = 1.6V to 1.2V
(Note 5)
2.65V < VIN < 6V, VSYNC/MODE = 0V, IOUT = 0A
VSYNC/MODE = VIN, IOUT = 0A
VRUN = 0V, VIN = 6V
VFB = 0.8V
VFB = 0V
fPLLIN < fOSC
fPLLIN > fOSC
ISW = 100mA
ISW = –100mA
q
4
30
0.784 0.8 0.816
q 0.74
0.8
0.84
q
20
50
110
0.05
0.2
q
0.1
0.5
q
– 0.1 – 0.5
q 2.65
6
230 350
10
15
0
1
495 550 605
80
400
700
q
3
q –3
10
20
–10 –20
0.5
0.7
0.6
0.8
UNITS
nA
V
V
mV
%/V
%
%
V
µA
µA
µA
kHz
kHz
kHz
µA
µA
Ω
Ω
2
Share Link: 