- 您现在的位置：买卖IC网 > PDF目录377734 > LTC1159 (Linear Technology Corporation) RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS PDF资料下载
参数资料
| 型号： | LTC1159 |
| 厂商： | Linear Technology Corporation |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 抗辐射高效，5安培开关稳压器 |
| 文件页数： | 1/20页 |
| 文件大小： | 400K |
| 代理商： | LTC1159 |
1
LTC1159/LTC1159-3.3/LTC1159-5
High Efficiency Synchronous
Step-Down Switching Regulators
S
FEATURE
D
The LTC
1159 series is a family of synchronous step-down
switching regulator controllers featuring automatic Burst
Mode
TM
operation to maintain high efficiencies at low
output currents. These devices drive external complemen-
tary power MOSFETs at switching frequencies up to 250kHz
using a constant off-time current-mode architecture.
A separate pin and on-board switch allow the MOSFET
driver power to be derived from the regulated output
voltage providing significant efficiency improvement when
operating at high input voltages. The constant off-time
current-mode architecture maintains constant ripple cur-
rent in the inductor and provides excellent line and load
transient response. The output current level is user pro-
grammable via an external current sense resistor.
The LTC1159 automatically switches to power saving
Burst Mode operation when load current drops below
approximately 15% of maximum current. Standby current
is only 300
μ
A while still regulating the output and shut-
down current is a low 20
μ
A.
U
ESCRIPTIO
I
Operation from 4V to 40V Input Voltage
I
Ultra-High Efficiency: Up to 95%
I
20
μ
A Supply Current in Shutdown
I
High Efficiency Maintained Over Wide Current Range
I
Current Mode Operation for Excellent Line and Load
Transient Response
I
Very Low Dropout Operation: 100% Duty Cycle
I
Short-Circuit Protection
I
Synchronous FET Switching for High Efficiency
I
Adaptive Non-Overlap Gate Drives
I
Available in SSOP and SO Packages
I
Step-Down and Inverting Regulators
I
Notebook and Palmtop Computers
I
Portable Instruments
I
Battery-Operated Digital Devices
I
Industrial Power Distribution
I
Avionics Systems
I
Telecom Power Supplies
U
S
A
O
PPLICATI
Figure 1. High Efficiency Step-Down Regulator
LOAD CURRENT (A)
0.02
60
E
70
80
100
0.2
2
LTC1159 TA01
90
V
IN
= 10V
V
IN
= 20V
FIGURE 1 CIRCUIT
LTC1159-5 Efficiency
0.15
μ
F
V
IN
CAP
P-DRIVE
EXTV
CC
LTC1159-5
SHDN1
SHDN2
I
TH
C
T
S-GND
P-GATE
V
CC
V
CC
SENSE
–
SENSE
+
P-GND
N-GATE
0.01
μ
F
Si9410DY
0.1
μ
F
1N4148
V
IN
Si9435DY
D1
MBRS140T3
L*
33
μ
H
R
0.05
V
OUT
5V/2A
+
C
OUT
220
μ
F
+
C
100
μ
F
100V
+
3.3
μ
F
0V = NORMAL
>2V = SHUTDOWN
3300pF
C
300pF
1k
LTC1159 F01
*COILTRONICS CTX33-4-MP
U
A
O
PPLICATI
TYPICAL
Burst Mode is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
相关PDF资料 |
PDF描述 |
|---|---|
| LTC1164-5 | Low Power 8th Order Pin Selectable Butterworth or Bessel Lowpass Filter |
| LTC1164-5C | Low Power 8th Order Pin Selectable Butterworth or Bessel Lowpass Filter |
| LTC1164-5CJ | Octal Bus Transceivers With 3-State Outputs 20-PDIP 0 to 70 |
| LTC1164-5CN | Low Power 8th Order Pin Selectable Butterworth or Bessel Lowpass Filter |
| LTC1164-5CS | Low Power 8th Order Pin Selectable Butterworth or Bessel Lowpass Filter |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1159_01 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Synchronous Step-Down Switching Regulators |
| LTC1159-3.3 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Synchronous Step-Down Switching Regulators |
| LTC1159-5 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Synchronous Step-Down Switching Regulators |
| LTC1159CG | 功能描述:IC REG CTRLR BUCK PWM CM 20-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC1159CG#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 20-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
发布紧急采购，3分钟左右您将得到回复。