参数资料
型号: LT1317IS8#TRPBF
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG BOOST ADJ 0.5A 8SOIC
标准包装: 2,500
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 1.24 V ~ 30 V
输入电压: 1.5 V ~ 12 V
PWM 型: 电流模式,混合
频率 - 开关: 600kHz
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: 带卷 (TR)
供应商设备封装: 8-SOIC
LT1317/LT1317B
ELECTRICAL C HARA C TERISTICS
Commercial Grade
V IN = 2V, V SHDN = 2V, T A = 25 ° C unless otherwise noted.
SYMBOL
PARAMETER
Shutdown Pin Current
CONDITIONS
V SHDN = V IN
V SHDN = 0V
q
q
MIN
TYP
0.015
– 2.3
MAX
0.06
–6
UNITS
μ A
μ A
LBI Threshold Voltage
q
190
180
200
200
210
220
mV
mV
LBO Output Low
LBO Leakage Current
LBI Input Bias Current (Note 4)
Low-Battery Detector Gain
Switch Leakage Current
Switch V CE Sat
I SINK = 10 μ A
V LBI = 250mV, V LBO = 5V
V LBI = 150mV
1M ? Load
V SW = 5V
I SW = 500mA
q
q
q
q
0.15
0.02
5
2000
0.01
300
0.25
0.1
40
3
350
V
μ A
nA
V/V
μ A
mV
q
400
mV
Reference Line Regulation
SHDN Input Voltage High
SHDN Input Voltage Low
1.8V ≤ V IN ≤ 12V
q
q
q
1.4
0.08
0.15
6
0.4
%/V
V
V
Industrial Grade
V IN = 2V, V SHDN = 2V, – 40 ° C ≤ T A ≤ 85 ° C unless otherwise noted.
SYMBOL
I Q
PARAMETER
Quiescent Current
CONDITIONS
Not Switching, V SHDN = 2V (LT1317)
V SHDN = 0V (LT1317/LT1317B)
q
q
MIN
TYP
MAX
160
40
UNITS
μ A
μ A
V SHDN = 2V, Switching (LT1317B)
q
7.5
mA
V FB
I B
Feedback Voltage
FB Pin Bias Current (Note 2)
Input Voltage Range
q
q
q
1.20
1.7
1.26
80
12
V
nA
V
g m
Error Amp Transconductance
? I = 5 μ A
q
70
140
240
μ mhos
Maximum Duty Cycle
q
80
%
Switch Current Limit (Note 3)
V IN = 2.5V, Duty Cycle = 30%
q
550
1350
mA
f OSC
Switching Frequency
Shutdown Pin Current
LBI Threshold Voltage
LBO Output Low
LBO Leakage Current
LBI Input Bias Current (Note 4)
Switch Leakage Current
Switch V CE Sat
Reference Line Regulation
SHDN Input Voltage High
SHDN Input Voltage Low
V SHDN = V IN
V SHDN = 0V
I SINK = 10 μ A
V LBI = 250mV, V LBO = 5V
V LBI = 150mV
V SW = 5V
I SW = 500mA
1.8V ≤ V IN ≤ 12V
q
q
q
q
q
q
q
q
q
q
q
q
500
180
1.4
750
0.1
–7
220
0.25
0.1
60
3
400
0.15
6
0.4
kHz
μ A
μ A
mV
V
μ A
nA
μ A
mV
%/V
V
V
The q denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Bias current flows into FB pin.
Note 3: Switch current limit guaranteed by design and/or correlation to
static tests. Duty cycle affects current limit due to ramp generator.
Note 4: Bias current flows out of LBI pin.
3
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