参数资料
型号: LT1376CS
厂商: Linear Technology
文件页数: 1/28页
文件大小: 0K
描述: IC REG BUCK ADJ 1.5A 16SOIC
标准包装: 50
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 2.42 V ~ 21.5 V
输入电压: 5 V ~ 25 V
PWM 型: 电流模式
频率 - 开关: 500kHz
电流 - 输出: 1.5A
同步整流器:
工作温度: 0°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
包装: 管件
供应商设备封装: 16-SOIC
LT1375/LT1376
1.5A, 500kHz Step-Down
Switching Regulators
FEATURES
Constant 500kHz Switching Frequency
Uses All Surface Mount Components
Inductor Size Reduced to 5 μ H
Easily Synchronizable
Saturating Switch Design: 0.4 ?
Effective Supply Current: 2.5mA
Shutdown Current: 20 μ A
Cycle-by-Cycle Current Limiting
is current mode for fast transient response and good loop
stability. Both fixed output voltage and adjustable parts are
available.
A special high speed bipolar process and new design
techniques achieve high efficiency at high switching fre-
quency. Efficiency is maintained over a wide output cur-
rent range by using the output to bias the circuitry and by
utilizing a supply boost capacitor to saturate the power
APPLICATIO S
switch. A shutdown signal will reduce supply current to
20 μ A on both parts. The LT1375 can be externally syn-
Portable Computers
Battery-Powered Systems
Battery Charger
Distributed Power
chronized from 580kHz to 900kHz with logic level inputs.
The LT1375/LT1376 fit into standard 8-pin PDIP and SO
packages, as well as a fused lead 16-pin SO with much
lower thermal resistance. Full cycle-by-cycle short-cir-
cuit protection and thermal shutdown are provided.
DESCRIPTIO
The LT ? 1375/LT1376 are 500kHz monolithic buck mode
switching regulators. A 1.5A switch is included on the die
along with all the necessary oscillator, control and logic
circuitry. High switching frequency allows a considerable
reduction in the size of external components. The topology
TYPICAL APPLICATIO
5V Buck Converter
Standard surface mount external parts are used, includ-
ing the inductor and capacitors.
For low input voltage applications with 3.3V output, see
LT1507. This is a functionally identical part that can
operate with input voltages between 4.5V and 12V.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Efficiency vs Load Current
D2
1N914
100
V OUT = 5V
INPUT
6V ? TO 25V
C3*
10 μ F TO
50 μ F
+
DEFAULT
= ON
SHDN FB
BOOST
V IN V SW
LT1376-5 BIAS
GND V C
C C
3.3nF
C2
0.1 μ F
L1**
5 μ H
D2
1N5818
+
OUTPUT**
5V, 1.25A
C1
100 μ F, 10V
SOLID
TANTALUM
90
80
70
60
V IN = 10V
L = 10 μ H
* RIPPLE CURRENT ≥ I OUT /2
** INCREASE L1 TO 10 μ H FOR LOAD CURRENTS ABOVE 0.6A AND TO 20 μ H ABOVE 1A
? FOR INPUT VOLTAGE BELOW 7.5V, SOME RESTRICTIONS MAY APPLY.
50
0
0.25
0.50 0.75
LOAD CURRENT (A)
1.00
1.25
SEE APPLICATIONS INFORMATION.
1375/76 TA01
1375/76 TA02
13756fd
1
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相关代理商/技术参数
参数描述
LT1376CS#PBF 功能描述:IC REG BUCK ADJ 1.5A 16SOIC 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:降压(降压) 输出类型:固定 输出数:1 输出电压:1.2V,1.5V,1.8V,2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP,10-MSOP(0.118",3.00mm 宽)裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘
LT1376CS#TR 功能描述:IC REG BUCK ADJ 1.5A 16SOIC 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:降压(降压) 输出类型:固定 输出数:1 输出电压:1.2V,1.5V,1.8V,2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP,10-MSOP(0.118",3.00mm 宽)裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘
LT1376CS#TRPBF 功能描述:IC REG BUCK ADJ 1.5A 16SOIC 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:降压(降压) 输出类型:固定 输出数:1 输出电压:1.2V,1.5V,1.8V,2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP,10-MSOP(0.118",3.00mm 宽)裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘
LT1376CS8 功能描述:IC REG BUCK ADJ 1.5A 8SOIC 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:降压(降压) 输出类型:固定 输出数:1 输出电压:1.2V,1.5V,1.8V,2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP,10-MSOP(0.118",3.00mm 宽)裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘
LT1376CS-8 制造商:Linear Technology 功能描述: