- 您现在的位置：买卖IC网 > PDF目录224114 > LTC1436AEGN#PBF (LINEAR TECHNOLOGY CORP) RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS PDF资料下载
参数资料
| 型号： | LTC1436AEGN#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 2 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封装： | 0.150 INCH, PLASTIC, SSOP-24 |
| 文件页数： | 8/28页 |
| 文件大小： | 493K |
| 代理商： | LTC1436AEGN#PBF |
第1页第2页第3页第4页第5页第6页第7页当前第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
16
LTC1436A
LTC1436-PLL-A/LTC1437A
14367afb
APPLICATIONS INFORMATION
WU
U
Topside MOSFET Driver Supply (CB, DB)
An external bootstrap capacitor CB connected to the Boost
pin supplies the gate drive voltage for the topside
MOSFET(s). Capacitor CB in the functional diagram is
charged through diode DB from INTVCC when the SW pin
is low. When one of the topside MOSFET(s) is to be turned
on, the driver places the CB voltage across the gate source
of the desired MOSFET. This enhances the MOSFET and
turns on the topside switch. The switch node voltage SW
rises to VIN and the Boost pin rises to VIN + INTVCC. The
value of the boost capacitor CB needs to be 100 times
greater than the total input capacitance of the topside
MOSFET(s). In most applications 0.1
F is adequate. The
reverse breakdown on DB must be greater than VIN(MAX).
Output Voltage Programming
The output voltage is pin selectable for all members of the
LTC1436A/LTC1437A family. The output voltage is
selected by the VPROG pin as follows:
VPROG = 0V
VOUT = 3.3V
VPROG = INTVCC
VOUT = 5V
VPROG = Open (DC)
VOUT = Adjustable
The LTC1436A/LTC1437A family also has remote output
voltage sense capability. The top of an internal resistive
divider is connected to VOSENSE. For fixed 3.3V and 5V
output voltage applications the VOSENSE pin is connected
to the output voltage as shown in Figure 5a. When using
an external resistive divider, the VPROG pin is left open (DC)
and the VOSENSE pin is connected to the feedback resistors
as shown in Figure 5b.
Figure 4b. Capacitive Charge Pump for EXT VCC
Figure 5b. LTC1436A/LTC1437A Adjustable Applications
Figure 5a. LTC1436A/LTC1437A Fixed Output Applications
Power-On Reset Function (POR)
The power-on reset function monitors the output voltage
and turns on an open drain device when it is out of
regulation. An external pull-up resistor is required on the
POR pin.
When power is first applied or when coming out of
shutdown, the POR output is pulled to ground. When the
output voltage rises above a level which is 5% below the
final regulated output value, an internal counter starts.
After counting 216 (65536) clock cycles, the POR pull-
down device turns off.
The POR output will go low whenever the output voltage
drops below 7.5% of its regulated value for longer than
approximately 30
s, signaling an out-of-regulation condi-
tion. In shutdown, the POR output is pulled low even if the
regulator’s output is held up by an external source.
Run/Soft Start Function
The RUN/SS pin is a dual purpose pin that provides the
soft start function and a means to shut down the
LTC1436A/LTC1437A. Soft start reduces surge currents
from VIN by gradually increasing the internal current limit.
Power supply sequencing can also be accomplished
using this pin.
EXTVCC
VIN
TGL
TGS
SW
BG
PGND
LTC1436A
LTC1437A
N-CH
+
CIN
VIN
0.22
F
BAT85
COUT
BAT85
+
1
F
+
L1
RSENSE
VN2222LL
1436 F04b
VPROG
SGND
LTC1436A
LTC1437A
1436 F05a
COUT
VOUT
GND: VOUT = 3.3V
INTVCC: VOUT = 5V
+
VOSENSE
R1
R2
OPEN (DC)
1436 F05b
100pF
1.19V
≤ VOUT ≤ 9V
VPROG
SGND
LTC1436A
LTC1437A
VOSENSE
VOUT = 1.19V 1 +
R2
R1
()
相关PDF资料 |
PDF描述 |
|---|---|
| LTC2249CUH#TR | 14-Bit, 80Msps Low Power 3V ADC; Package: QFN; No of Pins: 32; Temperature Range: 0°C to +70°C |
| LTC2249IUH#TR | 14-Bit, 80Msps Low Power 3V ADC; Package: QFN; No of Pins: 32; Temperature Range: -40°C to +85°C |
| LTC2250CUH | 10-Bit, 105Msps Low Noise 3V ADCs; Package: QFN; No of Pins: 32; Temperature Range: 0°C to +70°C |
| LTC2250CUH#TR | 10-Bit, 105Msps Low Noise 3V ADCs; Package: QFN; No of Pins: 32; Temperature Range: 0°C to +70°C |
| LTC2250IUH | 10-Bit, 105Msps Low Noise 3V ADCs; Package: QFN; No of Pins: 32; Temperature Range: -40°C to +85°C |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1436AIGN | 功能描述:IC REG CTRLR BUCK PWM CM 24-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 |
| LTC1436AIGN#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 24-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 |
| LTC1436AIGN#TR | 功能描述:IC REG CTRLR BUCK PWM CM 24-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 |
| LTC1436AIGN#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 24-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 |
| LTC1436AIGN-PLL | 功能描述:IC REG CTRLR BUCK PWM CM 24-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 |
发布紧急采购，3分钟左右您将得到回复。