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| 型号： | LTC3527EUD-1#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/22页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ DL 16QFN |
| 标准包装： | 121 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 1.6 V ~ 5.25 V |
| 输入电压： | 0.5 V ~ 5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1.2MHz，2.2MHz |
| 电流 - 输出： | 400mA，800mA |
| 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： | 16-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-QFN（3x3） |
LTC3527/LTC3527-1
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, –40 ° C to 85 ° C. V IN = V IN1 = V IN2 = 1.2V, V OUT1 = V OUT2 = 3.3V, T A = 25°C, unless otherwise noted.
PARAMETER
PMOS Switch Leakage Current (LTC3527)
CONDITIONS
V SW1,2 = 5V, V OUT1,2 = 0V, SHDN1,2 = 0V
MIN
TYP
0.1
MAX
10
UNITS
μA
NMOS and PMOS Combined Switch Leakage Current V SW1,2 = 5V, V OUT1,2 = 0V, SHDN1,2 = 0V (Note 6)
0.2
20
μA
(LTC3527-1)
NMOS Switch On-Resistance, SW1
NMOS Switch On-Resistance, SW2
PMOS Switch On-Resistance, SW1
PMOS Switch On-Resistance, SW2
0.30
0.50
0.40
0.60
Ω
Ω
Ω
Ω
NMOS Current Limit, SW1
NMOS Current Limit, SW2
Current Limit Delay to Output Time
(Note 4)
l
l
800
400
60
mA
mA
ns
Maximum Duty Cycle
Minimum Duty Cycle
V FB1,2 = 1V
V FB1,2 = 1.3V
l
l
85
90
0
%
%
Switching Frequency
Switching Frequency
V FSEL = 0V
V FSEL = 3.3V
l
l
0.9
1.8
1.2
2.2
1.5
2.8
MHz
MHz
SHDN1,2 Input High Voltage
SHDN1,2 Input Low Voltage
0.88
0.35
V
V
SHDN1,2 Input Current
V SHDN1,2 = 3.3V
1
2
μA
PGOOD1, PGOOD2 Threshold
PGOOD1, PGOOD2 Low Voltage
PGOOD1, PGOOD2 Leakage Current
Referenced to the Feedback Voltage
I PGOOD1,2 = 1mA
V PGOOD1,2 = 5.25V
–6
–9
0.1
0.01
–14
0.2
1
%
V
μA
MODE Input High Voltage
MODE Input Low Voltage
1
0.35
V
V
MODE Input Current
V MODE = 3.3V
1
2
μA
FSEL Input High Voltage
FSEL Input Low Voltage
0.88
0.35
V
V
FSEL Input Current
Soft-Start Time
V FSEL = 3.3V
1
0.5
2
μA
ms
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 LTC3527E/LTC3527E-1 are guaranteed to meet performance
speci?cations 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.
Note 3: Current is measured into the V OUT pin since the supply current is
bootstrapped to the output. The current will re?ect to the input supply by:
Note 4: Speci?cation is guaranteed by design and not 100% tested in
production.
Note 5: The LTC3527/LTC3527-1 includes an overtemperature shutdown
that is intended to protect the device during momentary overload
conditions. Junction temperature will exceed 125°C when the over-
temperature shutdown is active. Continuous operation above the speci?ed
maximum junction temperature may impair device reliability.
Note 6: The NMOS and PMOS switch leakage currents are tested in parallel
for the LTC3527-1 because V OUT1,2 are actively pulled to ground when
SHDN1,2 = 0V
(V OUT /V IN ) ? (1/Ef?ciency). All switches are off.
35271fc
3
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相关代理商/技术参数 |
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|---|---|
| LTC3527EUD-1-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters |
| LTC3527EUD-1-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters |
| LTC3527EUD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters |
| LTC3527EUD-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters |
| LTC3527EUD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters |
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