参数资料
型号: LTC3542IS6#TRPBF
厂商: Linear Technology
文件页数: 4/16页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ TSOT23-6
标准包装: 2,500
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.6 V ~ 5.5 V
输入电压: 2.5 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 2.25MHz
电流 - 输出: 500mA
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: SOT-23-6 细型,TSOT-23-6
包装: 带卷 (TR)
供应商设备封装: TSOT-23-6
LTC3542
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C unless otherwise speci?ed.
RUN
2V/DIV
V OUT
1V/DIV
I L
500mA/DIV
Start-Up from Shutdown
V OUT
100mV/DIV
AC COUPLED
I L
500mA/DIV
I LOAD
500mA/DIV
Load Step
V OUT
100mV/DIV
AC COUPLED
I L
500mA/DIV
I LOAD
500mA/DIV
Load Step
V IN = 3.6V 400 μ s/DIV
V OUT = 1.8V
I LOAD = 500mA
FIGURE 3a CIRCUIT
3542 G04
V IN = 3.6V 20 μ s/DIV
V OUT = 1.8V
I LOAD = 30mA TO 500mA
FIGURE 3a CIRCUIT
3542 G05
V IN = 3.6V 20 μ s/DIV
V OUT = 1.8V
I LOAD = 0mA TO 500mA
FIGURE 3a CIRCUIT
3542 G06
0.6150
0.6125
0.6100
0.6075
0.6050
0.6025
0.6000
0.5975
0.5950
0.5925
0.5900
0.5875
0.5850
Reference Voltage
vs Temperature
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
Oscillator Frequency
vs Temperature
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
Oscillator Frequency
vs Supply Voltage
0.5825
–50
–25
0
25
50
75
100
125
1.8
–50 –30 –10 10 30 50 70
90 110
1.8
2
3
4
5
6
TEMPERATURE ( ° C)
3542 G07
Output Voltage vs Supply Voltage
TEMPERATURE ( ° C)
3542 G08
Output Voltage vs Load Current
SUPPLY VOLTAGE (V)
R DS(ON) vs Input Voltage
3542 G09
0.5
0.4
V OUT = 1.8V
I OUT = 100mA
2.0
1.5
V IN = 3.6V
V OUT = 1.8V
0.9
0.8
0.3
0.2
0.1
1.0
0.5
Burst Mode
OPERATION
0.7
0.6
0.5
MAIN SWITCH
0
0
–0.1
–0.2
–0.3
–0.4
–0.5
–1.0
–1.5
PULSE SKIP
MODE
0.4
0.3
0.2
0.1
SYNCHRONOUS
SWITCH
–0.5
2
2.5
3
3.5
4
4.5
5
5.5
6
–2.0
1
10 100
1000
0
1
2
3
4
5
6
7
INPUT VOLTAGE (V)
3542 G10
LOAD CURRENT (mA)
3542 G11
V IN (V)
3542 G12
3542fa
4
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