参数资料
型号: LTC3221EDC#TRMPBF
厂商: Linear Technology
文件页数: 4/12页
文件大小: 0K
描述: IC REG SWITCHED CAP DBL ADJ 6DFN
标准包装: 500
类型: 切换式电容器(充电泵),倍增器
输出类型: 可调式
输出数: 1
输出电压: 可调
输入电压: 1.8 V ~ 5.5 V
PWM 型: Burst Mode?
频率 - 开关: 600kHz
电流 - 输出: 60mA
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: 6-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 6-DFN-EP(2x2)
LTC3221/
LTC3221-3.3/LTC3221-5
TYPICAL PERFOR A CE CHARACTERISTICS
Output Load Capability at 4%
(LTC3221-3.3 only)
Effective Open-Loop Output
Load Regulation
Below Regulation
Resistance vs Temperature
3.36
120
V OUT = 3.168V
15
V IN = 1.8V
3.34
3.32
V IN = 3.2V
110
100
T A = –45°C
14 V OUT = 3V
13
3.30
12
3.28
3.26
3.24
3.22
V IN = 1.8V
V IN = 2.5V
90
80
70
60
T A = 90°C
T A = 25°C
11
10
9
8
3.20
7
3.18
50
6
3.16
0
20
40
60
80
100
120
40
1.5
2.0 2.5
3.0
3.5
5
–50
–25
0 25
50
75
100
LOAD CURRENT (mA)
SUPPLY VOLTAGE (V)
3221 G08
TEMPERATURE ( ° C)
3221 G09
3221 G07
No-Load Input Current vs
Extra Input Current vs Load
Supply Voltage
Current (I IN -2 I LOAD )
Ef?ciency vs Supply Voltage
16
14
10
V IN = 2.5V
100
90
THEORETICAL MAX
80
12
10
8
T A = 90°C
T A = 25°C
1
0.1
70
60
50
I OUT = 30mA
I OUT = 1mA
6
4
2
T A = –45°C
0.01
40
30
20
10
0
1.5
2.0
2.5 3.0 3.5
4.0
4.5
0.001
0.01
0.1
1
10
100
0
1.8
2.0
2.2
2.4
2.6 2.8
3.0
3.2
70
SUPPLY VOLTAGE (V)
Output Ripple vs Load Current
3221 G10
LOAD CURRENT (mA)
Output Ripple
3221 G11
SUPPLY VOLTAGE (V)
Load Transient Response
3221 G12
60
50
C OUT = 2.2μF
V OUT
20mV/DIV
V OUT
20mV/DIV
(AC-COUPLED)
(AC-COUPLED)
40
30
20
C OUT = 4.7μF
60mA
I OUT
0mA
10
0
0
20
40
60
80
100
1 μ s/DIV
V IN = 2V
I LOAD = 60mA
C OUT = 4.7 μ F, 6.3V, SIZE 0603
3221 G14
5 μ s/DIV
V IN = 2V
I LOAD = 0mA TO 60mA STEP
C OUT = 4.7 μ F, 6.3V, SIZE 0603
3221 G15
LOAD CURRENT (mA)
3221 G13
3221f
4
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