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参数资料
| 型号： | LTC3429ES6#TRM |
| 厂商： | Linear Technology |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BST SYNC ADJ .6A TSOT23-6 |
| 标准包装： | 500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.5 V ~ 4.3 V |
| 输入电压： | 0.5 V ~ 4.4 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 500kHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°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 |
| 其它名称： | LTC3429ES6 LTC3429ES6-ND |
LTC3429/LTC3429B
TYPICAL APPLICATIO S
Applications Where V OUT > 4.3V
When the output voltage is programmed above 4.3V, it is
necessary to add a Schottky diode either from SW to V OUT ,
or to add a snubber network in order to maintain an
acceptable peak voltage on the SW pin. The Schottky diode
improvement but will negate the output disconnect fea-
ture. If output disconnect is required, an active snubber
network is suggested as shown below. Examples of Schot-
tky diodes are: MBR0520L, PMEG2010EA, 1N5817 or
equivalent.
between SW and V OUT will provide a peak efficiency
Application Circuit for V OUT > 4.3V Where Inrush Current Limiting and Output Disconnect are Required
V IN
L1
4.7 μ H
D1*
100
Li-Ion to 5V Efficiency
100
2.7V TO 4.2V
+
Li-Ion
C1
4.7 μ F
OFF ON
6
4
1
SW
V IN V OUT
LTC3429
SHDN FB
GND
2
5
3
R1
1.82M
R2
604k
MP1
C2
10 μ F
V OUT
5V
250mA
C3*
0.22 μ F
90
80
70
EFFICIENCY
V IN = 4.2V
V IN = 3.6V
V IN = 3.6V
10
1
0.1
*LOCATE COMPONENTS CLOSE TO THE PIN
C1: TAIYO YUDEN X5R JMK212BJ475MM
C2: TAIYO YUDEN X5R JMK212BJ106MM
3429 TA04
60
50
V IN = 4.2V
POWER LOSS
0.01
0.001
D1: MOTOROLA MBR0520L
L1: COILCRAFT D0160C-472
40
0.0001
MP1: ZETEX ZXM61P02F
0.1
1
10 100
1000
OUTPUT CURRENT (mA)
3429 TA04b
Application Circuit for V OUT > 4.3V Where Inrush Current Limiting and Output Disconnect are Not Required
V IN
+
2 AA
C1
L1
4.7 μ H
1
D1*
100
2-Cell to 5V Efficiency
100
CELL
4.7 μ F
OFF ON
6
4
SW
V IN V OUT
LTC3429
SHDN FB
GND
5
3
R1
1.82M
R2
V OUT
5V
150mA
C2
10 μ F
90
80
70
EFFICIENCY
V IN = 3V
V IN = 2.4V
V IN = 2.4V
10
1
0.1
2
604k
V IN = 3V
*LOCATE COMPONENTS CLOSE TO THE PIN
C1: TAIYO YUDEN X5R JMK212BJ475MM
C2: TAIYO YUDEN X5R JMK212BJ106MM
D1: MOTOROLA MBR0520L
L1: COILCRAFT D0160C-472
3429 TA05
60
50
40
POWER LOSS
0.01
0.001
0.0001
0.1
1
10 100
1000
OUTPUT CURRENT (mA)
3429 TA05b
3429fa
10
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