參數(shù)資料
型號(hào): LT1316IS8
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SPDT, 1/4 Amp Two Circuit Pushbutton
中文描述: 0.75 A SWITCHING REGULATOR, PDSO8
封裝: 0.150 INCH, PLASTIC, SOP-8
文件頁(yè)數(shù): 1/16頁(yè)
文件大小: 344K
代理商: LT1316IS8
1
LT1316
Micropower
DC/DC Converter
with Programmable
Peak Current Limit
I
Precise Control of Peak Switch Current
I
Quiescent Current:
33
μ
A in Active Mode
3
μ
A in Shutdown Mode
I
Low-Battery Detector Active in Shutdown
I
Low Switch V
CESAT
: 300mV at 500mA
I
8-Lead MSOP and SO Packages
I
Operates with V
IN
as Low as 1.5V
I
Logic Level Shutdown Pin
FEATURES
DESCRIPTIO
N
U
The LT
1316 is a micropower step-up DC/DC converter
that operates from an input voltage as low as 1.5V. A
programmable input current limiting function allows pre-
cise control of peak switch current. Peak switch current
can be set to any value between 30mA and 500mA by
adjusting one resistor. This is particularly useful for
DC/DC converters operating from high source impedance
inputs such as lithium coin cells or telephone lines.
The fixed off-time, variable on-time regulation scheme
results in quiescent current of only 33
μ
A in active mode.
Quiescent current decreases to 3
μ
A in shutdown with the
low-battery detector still active.
The LT1316 is available in 8-lead MSOP and SO packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
N
U
APPLICATIO
S
U
I
Battery Backup
I
LCD Bias
I
Low Power –48V to 5V/3.3V Converters
2-Cell to 5V Step-Up Converter
V
IN
SW
R
SET
GND
FB
SHDN
6
5
8
1
4
3
R5
10k
1%
2
7
LBO
LBI
LT1316
C2
47
μ
F
NC
NC
C1
47
μ
F
2 CELLS
L1
47
μ
H
D1
5V
50mA
D1: MOTOROLA MBR0520L
L1: SUMIDA CD43-470
1316 TA01
+
+
R1
1M
1%
R2
324k
1%
LOAD CURRENT (mA)
0.1
60
E70
90
1
10
100
1316 TA02
3.3V
IN
2.5V
IN
1.8V
IN
Efficiency vs Load Current
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