參數(shù)資料
型號(hào): LT1305CS8
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: Micropower High Power DC/DC Converter with Low-Battery Detector
中文描述: 1.2 A SWITCHING REGULATOR, 155 kHz SWITCHING FREQ-MAX, PDSO8
封裝: 0.150 INCH, PLASTIC, SO-8
文件頁(yè)數(shù): 4/8頁(yè)
文件大小: 236K
代理商: LT1305CS8
4
LT1305
TYPICAL PERFOR
M
A
N
CE CHARACTERISTICS
TEMPERATURE (
°
C)
–50
1.200
L
1.210
1.215
1.220
1.225
1.230
1.235
–25
0
25
50
LT1305 G10
75
1.240
1.245
1.250
1.205
100
Low-Battery Detect Trip Point
TEMPERATURE (
°
C)
–50
0
S
50
100
150
200
300
–25
0
25
50
LT1305 G13
75
100
250
I
SW
= 1A
Switch Saturation Voltage
SWITCH CURRENT (A)
0
S
300
400
1.6
LT1305 F12
200
100
250
350
150
50
0
0.4
0.8
1.2
2.0
1.4
0.2
0.6
1.0
1.8
T
A
= 25
°
C
Switch Saturation Voltage
GND (Pin 1):
Signal Ground. Tie to PGND under the
package.
LBO (Pin 2):
Open-Collector Output of Comparator C3.
Can sink 100
μ
A. High impedance when device is in shut-
down.
SHDN (Pin 3):
Shutdown. Pull high to shut down the
LT1305. Ground for normal operation.
FB (Pin 4):
Feedback Input. Connects to main comparator
C1 input.
LBI (Pin 5):
Low-Battery Comparator Input. When voltage
on this pin is below 1.24V, LBO is low.
V
IN
(Pin 6):
Supply Pin. Must be bypassed with a large
value capacitor to gound. Keep bypass within 0.2" of the
device.
SW (Pin 7):
Switch Pin. Connect inductor and diode here.
Keep layout short and direct to minimize radio frequency
interference.
PGND (Pin 8):
Power Ground. Tie to signal ground (pin 1)
under the package. Bypass capacitor from V
IN
should be
tied directly to PGND within 0.2" of the device.
PI FU
U
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