参数资料
型号: LTC3221EDC#TRMPBF
厂商: Linear Technology
文件页数: 5/12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%
(LTC3221-5 only)
Effective Open-Loop Output
Load Regulation
Below Regulation
Resistance vs Temperature
5.10
5.05
5.00
4.95
V IN = 4.2V
V IN = 3.6V
120
110
100
90
80
V OUT = 4.8V
T A = 90°C
T A = –45°C
T A = 25°C
15
V IN = 2.7V
14 V OUT = 4.5V
13
12
11
10
4.90
4.85
V IN = 2.7V
70
60
50
9
8
7
6
4.80
0
20
40
60
80
100
120
40
2.7
3.0
3.3
3.6
3.9
4.2
5
–50
–25
0 25
50
75
100
LOAD CURRENT (mA)
SUPPLY VOLTAGE (V)
3221 G17
TEMPERATURE ( ° C)
3221 G18
3221 G16
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 = 3V
100
90
12
1
80
70
THEORETICAL MAX
10
8
6
4
T A = 25°C
T A = 90°C
T A = –45°C
0.1
0.01
60
50
40
30
20
I OUT = 1mA
I OUT = 30mA
2
10
0
2.7
3.0
3.3 3.6 3.9
4.2
4.5
0.001
0.01
0.1
1
10
100
0
2.7
3.0
3.3 3.6 3.9
4.2
4.5
SUPPLY VOLTAGE (V)
Output Ripple vs Load Current
3221 G19
LOAD CURRENT (mA)
Output Ripple
3221 G20
SUPPLY VOLTAGE (V)
Load Transient Response
3221 G21
90
80
70
60
50
40
30
20
V IN = 3V
C OUT = 2.2μF
C OUT = 4.7μF
V OUT
50mV/DIV
(AC-COUPLED)
V OUT
50mV/DIV
(AC-COUPLED)
60mA
I OUT
0mA
10
0
0
20
40
60
80
100
1 μ s/DIV
V IN = 3V
I LOAD = 60mA
C OUT = 4.7 μ F, 6.3V, SIZE 0603
3221 G23
5 μ s/DIV
V IN = 3V
I LOAD = 0mA TO 60mA STEP
C OUT = 4.7 μ F, 6.3V, SIZE 0603
3221 G24
LOAD CURRENT (mA)
3221 G13
3221f
5
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