参数资料
型号: LT1316IS8#PBF
厂商: Linear Technology
文件页数: 1/16页
文件大小: 0K
描述: IC REG BST FLYBK ADJ 0.5A 8SOIC
标准包装: 100
类型: 升压,反激式
输出类型: 可调式
输出数: 1
输出电压: 1.23 V ~ 30 V
输入电压: 1.5 V ~ 12 V
电流 - 输出: 500mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
供应商设备封装: 8-SOIC
LT1316
Micropower
DC/DC Converter
with Programmable
Peak Current Limit
FEATURES
DESCRIPTIO N
s
s
s
s
s
s
Precise Control of Peak Switch Current
Quiescent Current:
33 μ A in Active Mode
3 μ A in Shutdown Mode
Low-Battery Detector Active in Shutdown
Low Switch V CESAT : 300mV at 500mA
8-Lead MSOP and SO Packages
Operates with V IN as Low as 1.5V
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.
Logic Level Shutdown Pin
Battery Backup
LCD Bias
s
APPLICATIO N S
s
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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.
s
Low Power – 48V to 5V/3.3V Converters
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO N
2-Cell to 5V Step-Up Converter
Efficiency vs Load Current
L1
47 μ H
D1
5V
90
2 CELLS
+
C1
47 μ F
NC
7
2
6
V IN
SHDN
LBI
LT1316
5
SW
FB
LBO
8
1
NC
R1
1M
1%
+
50mA
C2
47 μ F
80
3.3V IN
2.5V IN
1.8V IN
R SET
3
R5
GND
4
R2
324k
1%
70
10k
1%
D1: MOTOROLA MBR0520L
L1: SUMIDA CD43-470
1316 TA01
60
0.1
1
10
100
LOAD CURRENT (mA)
1316 TA02
1
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