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参数资料
| 型号： | LTC1877IMS8#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.5 A SWITCHING REGULATOR, 605 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件页数： | 9/16页 |
| 文件大小： | 234K |
| 代理商： | LTC1877IMS8#TRPBF |
LTC1877
2
1877fa
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (VIN)..........................–0.3V to 11V
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 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
(Note 1)
1
2
3
4
RUN
ITH
VFB
GND
8
7
6
5
PLL LPF
SYNC/MODE
VIN
SW
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 150°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC1877EMS8#PBF
LTC1877EMS8#TRPBF
LTLU
8-Lead Plastic MSOP
–40°C to 85°C
LTC1877IMS8#PBF
LTC1877IMS8#TRPBF
LTLU
8-Lead Plastic MSOP
–40°C to 85°C
Consult LTC Marketing for parts specied with wider operating temperature ranges. *The temperature grade is identied by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IVFB
Feedback Current
(Note 4)
l
430
nA
VFB
Regulated Output Voltage
(Note 4) 0°C ≤ TA ≤ 85°C
(Note 4) –40°C ≤ TA ≤ 85°C
l
0.784
0.74
0.8
0.816
0.84
V
ΔVOVL
Output Overvoltage Lockout
ΔVOVL = VOVL – VFB
l
20
50
110
mV
ΔVFB
Reference Voltage Line Regulation
VIN = 2.65V to 10V (Note 4)
0.05
0.15
%/V
VLOADREG
Output Voltage Load Regulation
Measured in Servo Loop; VITH = 0.9V to 1.2V
Measured in Servo Loop; VITH = 1.6V to 1.2V
l
0.1
–0.1
0.5
–0.5
%
VIN
Input Voltage Range
l
2.65
10
V
IQ
Input DC Bias Current
Pulse-Skipping Mode
Burst Mode Operation
Shutdown
(Note 5)
2.65V < VIN < 10V, VSYNC/MODE = 0V, IOUT = 0A
VSYNC/MODE = VIN, IOUT = 0A
VRUN = 0V, VIN = 10V
230
10
0
350
15
1
μA
fOSC
Oscillator Frequency
VFB = 0.8V
VFB = 0V
495
550
80
605
kHz
fSYNC
SYNC Capture Range
400
700
kHz
The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = 5V unless otherwise specied.
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