参数资料
型号: LTC3112EFE#PBF
厂商: Linear Technology
文件页数: 4/32页
文件大小: 0K
描述: IC REG BUCK BOOST SYNC 20-TSSOP
标准包装: 74
类型: 降压(降压),升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 2.5 V ~ 14 V
输入电压: 2.7 V ~ 15 V
PWM 型: 电压模式,混合
频率 - 开关: 750kHz
电流 - 输出: 2.5A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)裸露焊盘
包装: 管件
供应商设备封装: 20-TSSOP-EP
LTC3112
ELECTRICAL CHARACTERISTICS
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 specified maximum operating junction
temperature may impair device reliability.
Note 4: Voltage transients on the switch pins beyond the DC limit specified
in the Absolute Maximum Ratings, are non disruptive to normal operation
when using good layout practices, as shown on the demo board or
described in the data sheet and application notes.
Note 5: I OUT current is tested in a non-switching DC state. In a switching
environment I OUT accuracy may exhibit variation with factors such as
switching frequency, load current, input/output voltage, and temperature.
See typical performance characteristic curves for predicted variation.
Note 6: The junction temperature (T J , in °C) is calculated from the ambient
temperature (T A , in °C) and power dissipation (P D , in Watts) according to
the formula:
T J = T A + (P D ? q JA ), where q JA (in °C/W) is the package thermal
impedance.
Note 7: SYNC frequency range is tested with a square wave. Operation
with 100ns minimum high or low times is assured by design.
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C, V IN = 5.0V, V OUT = 5.0V unless otherwise specified
Wide V IN to 5V OUT Efficiency
Wide V IN to 5V OUT Power Loss
Wide V IN to 3.3V OUT Efficiency
100
PWM
100
PWM
90
BURST
1
PWM
90
BURST
80
80
70
0.1
70
60
0.01
BURST
60
50
40
30
0.0001
0.001
0.01
0.1
1
2.7V IN
5.0V IN
12V IN
0.001
0.0001
0.0001
0.001
0.01
0.1
2.7V IN LOSS
5.0V IN LOSS
12V IN LOSS
1
50
40
30
0.0001
0.001
0.01
0.1
1
2.7V IN
5.0V IN
12V IN
LOAD CURRENT (A)
3112 G01a
LOAD CURRENT (A)
3112 G01b
LOAD CURRENT (A)
3112 G02a
Wide V IN to 3.3V OUT Power Loss
100
Wide V IN to 12V OUT Efficiency
PWM
Wide V IN to 12V OUT Power Loss
1
PWM
90
BURST
1
PWM
80
0.1
70
0.1
0.01
BURST
60
0.01
BURST
0.001
0.0001
0.0001
0.001
0.01
0.1
2.7V IN LOSS
5.0V IN LOSS
12V IN LOSS
1
50
40
30
0.0001
0.001
0.01
0.1
1
3.6V IN
5.0V IN
12V IN
0.001
0.0001
0.0001
0.001
0.01
0.1
3.6V IN LOSS
5.0V IN LOSS
12V IN LOSS
1
LOAD CURRENT (A)
3112 G02b
LOAD CURRENT (A)
3112 G03a
LOAD CURRENT (A)
3112 G03b
4
For more information www.linear.com/LTC3112
3112fb
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