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| 型号： | LT1611CS5#TR |
| 厂商： | Linear Technology |
| 文件页数： | 11/12页 |
| 文件大小： | 0K |
| 描述： | IC REG INV ADJ 0.3A SOT23-5 |
| 标准包装： | 2,500 |
| 类型： | 反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | -0.9 V ~ -10 V |
| 输入电压： | 0.9 V ~ 10 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.4MHz |
| 电流 - 输出： | 300mA |
| 同步整流器： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | SOT-23-5 |
LT1611
OPERATIO
Capacitors
As described previously, ceramic capacitors can be used
with the LT1611 provided loop stability is considered. For
lower cost applications, small tantalum units can be used.
A value of 22 μ F is acceptable, although larger capacitance
values can be used. ESR is the most important parameter
in selecting an output capacitor. The “flying” capacitor (C2
in the schematic figures) should be a 1 μ F ceramic type. An
X5R or X7R dielectric should be used to avoid capacitance
decreasing severely with applied voltage. The input by-
pass capacitor is less critical, and either tantalum or
Table 1. Inductor Vendors
ceramic can be used with little trade-off in circuit perfor-
mance. Some capacitor types appropriate for use with the
LT1611 are listed in Table 2.
Diodes
A Schottky diode is recommended for use with the LT1611.
The Motorola MBR0520 is a very good choice. Where the
input to output voltage differential exceeds 20V, use the
MBR0530 ( a 30V diode). If cost is more important than
efficiency, a 1N4148 can be used, but only at low current
loads.
VENDOR
Sumida
Murata
Coiltronics
PHONE
(847) 956-0666
(404) 436-1300
(407) 241-7876
URL
www.sumida.com
www.murata.com
www.coiltronics.com
PART
CLS62-22022
CD43-470
LQH3C-220
CTX20-1
COMMENT
22 μ H Coupled
47 μ H
22 μ H, 2mm Height
20 μ H Coupled, Low DCR
Table 2. Capacitor Vendors
VENDOR
Taiyo Yuden
AVX
PHONE
(408) 573-4150
(803) 448-9411
URL
www.t-yuden.com
www.avxcorp.com
PART
Ceramic Caps
Ceramic Caps
COMMENT
X5R Dielectric
Tantalum Caps
Murata
(404) 436-1300
www.murata.com
Ceramic Caps
TYPICAL APPLICATIO S
“Charge Pump” Inverting DC/DC Converter
3.3V
L1
10 μ H
C2
1 μ F
D1
D2
V IN
SHDN
SW
–5V
70mA
C1
1 μ F
LT1611
GND
NFB
29.4k
C3
22 μ F
10k
C1, C2: TAIYO YUDEN LMK212BJ105MG
C3: TAIYO YUDEN JMK325BJ226MM
D1, D2: MBR0520
L1: MURATA LQH3C-100
1611 TA02
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
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相关代理商/技术参数 |
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|---|---|
| LT1611CS5TRMPBF | 制造商:Linear Technology 功能描述:1.4MHz Inverting Sw Reg. LT1611CS5M |
| LT1612 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Synchronous, Step-Down 800kHz PWM DC/DC Converter |
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| LT1612EMS8 | 功能描述:IC REG BUCK SYNC ADJ 0.5A 8MSOP 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 |
| LT1612EMS8#PBF | 功能描述:IC REG BUCK SYNC ADJ 0.5A 8MSOP RoHS:是 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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