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参数资料
| 型号： | LTC3406BES5#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.25 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封装： | PLASTIC, MO-193, TSOT-23, 5 PIN |
| 文件页数： | 4/16页 |
| 文件大小： | 231K |
| 代理商： | LTC3406BES5#PBF |
12
LTC3406B
3406bfa
APPLICATIO S I FOR ATIO
WU
UU
Design Example
As a design example, assume the LTC3406B is used in a
single lithium-ion battery-powered cellular phone
application. The VIN will be operating from a maximum of
4.2V down to about 2.7V. The load current requirement
is a maximum of 0.6A but most of the time it will be in
standby mode, requiring only 2mA. Efficiency at both low
and high load currents is important. Output voltage is
2.5V. With this information we can calculate L using
equation (1),
L
fI
V
L
OUT
IN
= () ()
1
(3)
Figure 5a. LTC3406B Layout Diagram
Figure 6a. LTC3406B Suggested Layout
Substituting VOUT = 2.5V, VIN = 4.2V, IL = 240mA and
f = 1.5MHz in equation (3) gives:
L
V
MHz
mA
V
H
=
=
25
1 5
240
1
25
42
281
.
.(
)
.
A 2.2H inductor works well for this application. For best
efficiency choose a 720mA or greater inductor with less
than 0.2 series resistance.
CIN will require an RMS current rating of at least 0.3A
ILOAD(MAX)/2 at temperature and COUT will require an ESR
of less than 0.25. In most cases, a ceramic capacitor will
satisfy this requirement.
RUN
LTC3406B
GND
SW
L1
R2
R1
CFWD
BOLD LINES INDICATE HIGH CURRENT PATHS
VIN
VOUT
3406B F05a
4
5
1
3
+
–
2
VFB
VIN
CIN
+
–
COUT
RUN
LTC3406B-1.8
GND
SW
L1
BOLD LINES INDICATE HIGH CURRENT PATHS
VIN
VOUT
3406B F05b
4
5
1
3
+
–
2
VOUT
VIN
CIN
COUT
Figure 5b. LTC3406B-1.8 Layout Diagram
LTC3406B
GND
3406B F06a
PIN 1
VOUT
VIN
VIA TO VOUT
SW
VIA TO VIN
VIA TO GND
COUT
CIN
L1
R2
CFWD
R1
LTC3406B-1.8
GND
3406B F06b
PIN 1
VOUT
VIN
SW
VIA TO VIN
VIA TO VOUT
COUT
CIN
L1
Figure 6b. LTC3406B-1.8 Suggested Layout
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3406BES5-1.8#PBF | 1.25 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO5 |
| LTC3407IMSE-2#TR | 1.6 A DUAL SWITCHING CONTROLLER, 2700 kHz SWITCHING FREQ-MAX, PDSO10 |
| LTC3528BEDDB#TRM | SWITCHING REGULATOR, 1300 kHz SWITCHING FREQ-MAX, PDSO8 |
| LTC3528EDDB#TRM | SWITCHING REGULATOR, 1300 kHz SWITCHING FREQ-MAX, PDSO8 |
| LTC3542EDC-1#PBF | SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3406BES5TRMPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Down 5.5V TSOT23-5 |
| LTC3406ES5 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 2.5V to 5.5V 5-Pin TSOT-23 |
| LTC3406ES5#PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 2.5V to 5.5V 5-Pin TSOT-23 制造商:Linear Technology 功能描述:IC DC-DC CONV 1.5 MHz 5-SOT-23 制造商:Linear Technology 功能描述:BUCK 5.5VIN 1.5MHZ 0.6A 5TSOT23 制造商:Linear Technology 功能描述:BUCK, 5.5VIN, 1.5MHZ, 0.6A, 5TSOT23 制造商:Linear Technology 功能描述:IC, DC-DC CONV, 1.5 MHz, 5-SOT-23; Primary Input Voltage:5.5V; No. of Outputs:1; Output Voltage:600mV; Output Current:600mA; No. of Pins:5; Operating Temperature Min:-40C; Operating Temperature Max:85C; Package / Case:5-SOT-23 ;RoHS Compliant: Yes |
| LTC3406ES5#TR | 功能描述:IC REG BUCK SYNC ADJ TSOT23-5 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 |
| LTC3406ES5#TRM | 功能描述:IC REG BUCK SYNC ADJ TSOT23-5 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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