参数资料
型号: LTC3546EUFD#TRPBF
厂商: Linear Technology
文件页数: 6/30页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 1A/2A 28QFN
标准包装: 2,500
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 0.6 V ~ 5 V
输入电压: 2.25 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 2.25MHz,750kHz ~ 4MHz
电流 - 输出: 1A,2A
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: 28-WFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 28-QFN(4x5)
LTC3546
TYPICAL PERFORMANCE CHARACTERISTICS
V OUT
20mV/DIV
I LOAD
500mA/DIV
OUT2 Burst Mode Operation
V OUT
20mV/DIV
I LOAD
250mA/DIV
OUT2 Pulse-Skipping Mode
Operation
V OUT
20mV/DIV
I LOAD
250mA/DIV
OUT2 Forced Continuous Mode
Operation
1μs/DIV
3546 G11
1μs/DIV
3546 G12
1μs/DIV
3546 G13
90 V
90 V
95
85
80
75
SW1D CONNECTED TO SW1
V IN = 3.6V
V OUT = 2.5V
I LOAD = 300mA
OUT1 Efficiency vs Load Current
SW1D CONNECTED TO SW1
V IN = 3.6V
OUT = 1.8V
95
85
80
75
SW1D CONNECTED TO SW1
V IN = 3.6V
V OUT = 1.8V
I LOAD = 200mA
OUT1 Efficiency vs Load Current
SW1D CONNECTED TO SW2
V IN = 3.6V
OUT = 1.8V
SW1D CONNECTED TO SW1
V IN = 3.6V
V OUT = 1.8V
I LOAD = 100mA
OUT2 Efficiency vs Load Current
100
SW1D CONNECTED TO SW2
95 V IN = 3.6V
V OUT = 2.5V
90
85
80
75
70
65
60
0.001
0.01
0.1
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
1 10
70
65
60
0.001
0.01
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
0.1
1
70
65
60
0.001
0.01
0.1
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
1 10
I LOAD (A)
3546 G14
I LOAD (A)
3546 G15
I LOAD (A)
3546 G16
OUT2 Efficiency vs Load Current
100
SW1D CONNECTED TO SW1
95 V IN = 3.6V
V OUT = 2.5V
90
OUT1 Efficiency vs V IN
100
SW1D CONNECTED TO SW1
98 V OUT = 1.8V
96
94
OUT1 Efficiency vs V IN
100
SW1D CONNECTED TO SW2
98 V OUT = 1.8V
96
94
85
92
400mA
92
80
75
90
88
90
88
200mA
70
65
60
0.001
0.01
0.1
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
1 10
86
84
82
80
2.25
2.75
3.25
3.75
4.25
2A
4.75
5.25
86
84
82
80
2.25
2.75
3.25
1A
3.75
4.25
4.75
5.25
I LOAD (A)
3546 G17
V IN (V)
3546 G18
V IN (V)
3546 G19
6
For more information www.linear.com/3546
3546fc
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