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| 型号： | LT1610IS8#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.6A 8SOIC |
| 标准包装： | 100 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.23 V ~ 30 V |
| 输入电压： | 0.9 V ~ 8 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1.7MHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 8-SOIC |
| 产品目录页面： | 1328 (CN2011-ZH PDF) |
LT1610
APPLICATIO N S I N FOR M ATIO N
L1
22 μ H
?
C3
1 μ F
CERAMIC
D1
V OUT
5V
120mA
4 CELLS
+
C1
22 μ F
6.3V
C4
1 μ F
CERAMIC
1
8
6
V IN
V C
COMP
LT1610
5
SW
FB
SHDN
2
3
1M
324k
?
L2
22 μ H
+
C2
22 μ F
6.3V
C5
1 μ F
CERAMIC
GND
7
PGND
4
C1, C2: ALUMINUM ELECTROLYTIC
C3 TO C5: CERAMIC X7R OR X5R
D1: MBR0520
SHUTDOWN
1610 F06
L1, L2: MURATA LQH3C220 OR SUMIDA CLS62-220
Figure 6. 4-Cell Alkaline to 5V/120mA SEPIC DC/DC Converter
V OUT
200mV/DIV
I DIODE
500mA/DIV
SWITCH
VOLTAGE
10V/DIV
sation network is modified to achieve stable operation.
Linear Technology’s Application Note 19 contains a de-
tailed description of the method. A good starting point for
the LT1610 is C C ~ 220pF and R C ~ 220k.
All Ceramic, Low Profile Design
Large value ceramic capacitors that are suitable for use as
100ns/DIV
1610 F07
the main output capacitor of an LT1610 regulator are now
Figure 7. Switching Waveforms Without Ceramic Capacitor C5
V OUT
50mV/DIV
I DIODE
500mA/DIV
SWITCH
VOLTAGE
10V/DIV
available. These capacitors have very low ESR and there-
fore offer very low output ripple in a small package.
However, you should approach their use with some
caution.
Ceramic capacitors are manufactured using a number of
dielectrics, each with different behavior across tempera-
ture and applied voltage. Y5V is a common dielectric used
for high value capacitors, but it can lose more than 80% of
V IN = 4.1V
100ns/DIV
1610 F08
the original capacitance with applied voltage and extreme
LOAD = 100mA
Figure 8. Switching Waveforms with Ceramic Capacitor C5.
Note the 50mV/DIV Scale for V OUT
It is best to choose the compensation components empiri-
cally. Once the power components have been chosen
(based on size, efficiency, cost and space requirements),
a working circuit is built using conservative (or merely
guessed) values of R C and C C . Then the response of the
circuit is observed under a transient load, and the compen-
temperatures. The transient behavior and loop stability of
the switching regulator depend on the value of the output
capacitor, so you may not be able to afford this loss. Other
dielectrics (X7R and X5R) result in more stable character-
istics and are suitable for use as the output capacitor. The
X7R type has better stability across temperature, whereas
the X5R is less expensive and is available in higher values.
The second concern in using ceramic capacitors is that
many switching regulators benefit from the ESR of the
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1611 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Low Dropout Regulators with Shutdown |
| LT-1611-401-012-XSP1 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT1611CS5 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Inv 0.9V to 10V 5-Pin TSOT-23 |
| LT1611CS5#PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Inv 0.9V to 10V 5-Pin TSOT-23 制造商:Linear Technology 功能描述:IC INVERTING REGULATOR 5-SOT-23 制造商:Linear Technology 功能描述:IC, INVERTING REGULATOR, 5-SOT-23 制造商:Linear Technology 功能描述:IC, INVERTING REGULATOR, 5-SOT-23; Primary Input Voltage:10V; No. of Outputs:1; Output Voltage:-5V; Output Current:150mA; No. of Pins:5; Operating Temperature Min:0C; Operating Temperature Max:70C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
| LT1611CS5#TR | 功能描述:IC REG INV ADJ 0.3A SOT23-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
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