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| 型号： | LT1071CT |
| 厂商： | Linear Technology |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG MULTI CONFIG ADJ TO220-5 |
| 标准包装： | 50 |
| 类型： | 降压（降压），升压（升压），反相，Cuk，回扫，正向转换器 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 60 V |
| 输入电压： | 3 V ~ 60 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 40kHz |
| 电流 - 输出： | 2.5A |
| 同步整流器： | 无 |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-5 成形引线 |
| 包装： | 管件 |
| 供应商设备封装： | TO-220-5 |
LT1070/LT1071
5A and 2.5A High Efficiency
Switching Regulators
FEATURES
DESCRIPTIO
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Wide Input Voltage Range: 3V to 60V
Low Quiescent Current: 6mA
Internal 5A Switch (2.5A for LT1071)
Very Few External Parts Required
Self Protected Against Overloads
Operates in Nearly All Switching Topologies
Shutdown Mode Draws Only 50 μ A Supply Current
Flyback Regulated Mode Has Fully Floating Outputs
Comes in Standard 5-Pin TO-220 Package
Can be Externally Synchronized (Consult Factory)
The LT ? 1070/LT1071 are monolithic high power switch-
ing regulators. They can be operated in all standard switch-
ing configurations including buck, boost, flyback, for-
ward, inverting and “Cuk”. A high current, high efficiency
switch is included on the die along with all oscillator,
control and protection circuitry. Integration of all func-
tions allows the LT1070/LT1071 to be built in a standard
5-pin T0-220 power package. This makes it extremely
easy to use and provides “bust proof” operation similar to
that obtained with 3-pin linear regulators.
Logic Supply 5V at 10A
5V Logic to ± 15V Op Amp Supply
Off-Line Converter Up to 200W
Battery Upconverter
Power Inverter (+ to –) or (– to +)
Fully Floating Multiple Outputs
For Lower Current Applications, See the LT1072
APPLICATIO S
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USER NOTE:
This data sheet is only intended to provide specifications, graphs and a general functional
description of the LT1070/LT1071. Application circuits are included to show the capability of the
LT1070/LT1071. A complete design manual (AN19) should be obtained to assist in developing new
designs. This manual contains a comprehensive discussion of both the LT1070 and the external
components used with it, as well as complete formulas for calculating the values of these
components. The manual can also be used for the LT1071 by factoring in the lower switch current
rating. A second Application Note, AN25, which details off-line applications is available.
The LT1070/LT1071 operate with supply voltages from 3V
to 60V, and draw only 6mA quiescent current. They can
deliver load power up to 100W with no external power
devices. By utilizing current mode switching techniques,
they provide excellent AC and DC load and line regulation.
The LT1070/LT1071 have many unique features not found
even on the vastly more difficult to use low power control
chips presently available. They use adaptive antisat switch
drive to allow very wide ranging load currents with no loss
in efficiency. An externally activated shutdown mode
reduces total supply current to 50 μ A typical for standby
operation. Totally isolated and regulated outputs can be
generated by using the optional “flyback regulation mode”
built into the LT1070/LT1071, without the need for
optocouplers or extra transformer windings.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Boost Converter (5V to 12V)
L2
10 μ H
100
80
Maximum Output Power*
BOOST
5V
L1**
150 μ H
OUTPUT
FILTER
C3
100 μ F
60
BUCK/BOOST
V O = 30V
D1
FLYBACK
V SW
C3*
100 μ F
+
V IN
LT1070
FB
GND V C
R3
1k
C1
1 μ F
* REQUIRED IF INPUT LEADS ≥ 2"
+
C2
1000 μ F
R1
10.7k
1%
R2
1.24k
1%
1070/71 TA01
12V
1A
40
ISOLATED
20
BUCK/BOOST
V O = 5V
0
0 10 20 30 40 50
INPUT VOLTAGE (V)
1070/71 TA02
* ROUGH GUIDE ONLY. BUCK MODE P OUT = 5A ? V OUT .
SPECIAL TOPOLOGIES DELIVER MORE POWER
** PULSE ENGINEERING 92113
** DIVIDE VERTICAL POWER SCALE BY 2 FOR LT1071
10701fe
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相关代理商/技术参数 |
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| LT1071CT#06 | 制造商:Linear Technology 功能描述:5A and 2.5A High Efficiency Switching Regulator |
| LT1071CT#06PBF | 功能描述:IC REG MULTI CONFIG ADJ TO220-5 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:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 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:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT1071CT#06PBF | 制造商:Linear Technology 功能描述:IC DC-DC CONV 2.5A 65V TO- 制造商:Linear Technology 功能描述:IC, DC-DC CONV, 2.5A, 65V, TO-220-5 |
| LT1071CT#30PBF | 制造商:Linear Technology 功能描述:IC REG MULTI CONFIG ADJ TO220-5 |
| LT1071CT#PBF | 功能描述:IC REG MULTI CONFIG ADJ TO220-5 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:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 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:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
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