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| 型号： | LTC3459ES6#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ SOT23-6 |
| 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： | 2.5 V ~ 10 V |
| 输入电压： | 1.5 V ~ 5.5 V |
| PWM 型： | Burst Mode? |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | TSOT-23-6 |
LTC3459
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 3.3V, V OUT = 5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V IN
Input Voltage Range
V IN Quiescent Current
V IN Shutdown Current
SHDN = V CC
SHDN = GND
l
1.5
10
0.1
5.5
20
1
V
μA
μA
V OUT
Programmable Voltage Range
V OUT Quiescent Supply Current
V OUT Shutdown Current
SHDN = V CC
SHDN = GND
l
2.5
2
0.1
10
4
1
V
μA
μA
Reference
Feedback Voltage
FB Input Leakage Current
V IN = 3.3V, V OUT = 7.5V
Measured on FB
l
1.19
1.22
10
1.25
50
V
nA
Converter Performance
Peak Switch Current (V IN = 3.3V)
t OFF Timer (V IN = 3.3V, V OUT = 5V)
L = 22μH
Varies by 1/(V OUT – V IN )
l
60
225
75
400
90
550
mA
ns
Zero Current Comparator Threshold
L = 22μH
0
mA
Main NMOS Switch
On-Resistance
V OUT = 5V
2.8
Ω
Leakage Current
V SWITCH = 10V, V OUT = 10V
0.01
1
μA
Main PMOS Switch
On-Resistance
V OUT = 5V
4.2
Ω
Leakage Current
V IN = 5V, V SWITCH = 5V, V OUT = 0V
0.02
2
μA
Logic Inputs
SHDN Threshold (Rising Edge)
SHDN Hysteresis
0.3
80
1
V
mV
SHDN Input Leakage Current
SHDN = 3.3V
0
50
nA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3459E is guaranteed to meet performance speci?cations
Note 3: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the speci?ed maximum operating junction
temperature may impair device reliability.
from 0°C to 85°C. Speci?cations over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
3459fc
3
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