- 您现在的位置：买卖IC网 > PDF目录14084 > LT3437EDD#TRPBF (Linear Technology)IC REG BUCK ADJ 0.5A 10DFN PDF资料下载
参数资料
| 型号： | LT3437EDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 0.5A 10DFN |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 54 V |
| 输入电压： | 3.3 V ~ 60 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 200kHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-DFN（3x3） |
当前第1页第2页第3页第4页第5页第6页第7页第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
LT3437
High Voltage 500mA, 200kHz
Step-Down Switching Regulator
with 100 μ A Quiescent Current
FEATURES
DESCRIPTIO
■
■
■
■
■
■
■
■
■
■
■
■
■
Wide Input Range: 3.3V to 60V
Load Dump (Input Transient) Protection to 80V
500mA Peak Switch Current
Burst Mode ? Operation: 100 μ A Quiescent Current**
Low Shutdown Current: I Q < 1 μ A
Defeatable Burst Mode Operation
200kHz Switching Frequency
Saturating Switch Design: 0.8 ? On-Resistance
Peak Switch Current Maintained Over
Full Duty Cycle Range*
1.25V Feedback Reference Voltage
Easily Synchronizable
Soft-Start Capability
Small 10-Pin Thermally Enhanced DFN Package
The LT ? 3437 is a 200kHz monolithic buck switching
regulator that accepts input voltages up to 80V. A high
efficiency 500mA, 0.8 ? switch is included on the die along
with all the necessary oscillator, control and logic cir-
cuitry. Current mode topology is used for fast transient
response and good loop stability.
Innovative design techniques along with a new high volt-
age process achieve high efficiency over a wide input
range. Efficiency is maintained over a wide output current
range by employing Burst Mode operation at low currents,
utilizing the output to bias the internal circuitry, and by
using a supply boost capacitor to fully saturate the power
switch. Burst Mode operation can be defeated by a logic
high signal on the SYNC pin which results in lower light
APPLICATIO S
load ripple at the expense of light load efficiency. Patented
circuitry maintains peak switch current over the full duty
■
■
■
■
■
High Voltage Power Conversion
14V and 42V Automotive Systems
Industrial Power Systems
Distributed Power Systems
Battery-Powered Systems
cycle range.* Shutdown reduces input supply current to
less than 1 μ A. External synchronization can be imple-
mented by driving the SYNC pin with logic-level inputs. A
single capacitor from the C SS pin to the output provides a
controlled output voltage ramp (soft-start).
■ Powered Ethernet
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Burst Mode
is a registered trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. *Protected by U.S. Patents, including 6498466.
**See Burst Mode Operation section for conditions.
The LT3437 is available in a low profile (0.75mm) 3mm ×
3mm 10-pin DFN package or a 16-Pin TSSOP Package,
both with exposed pad leadframes for low thermal
resistance.
TYPICAL APPLICATIO
Input Voltage
14V to 3.3V Step-Down Converter with
100 μ A No Load Quiescent Current
Supply Current vs Input Voltage
200
Transient Response
SHDN
V IN
4.5V TO 80V*
2.2 μ F
100V
CER
V IN BOOST
LT3437
SW
0.1 μ F
0.1 μ F
100 μ H BAS21
10MQ100N
V OUT
3.3V
400mA
180
160
140
120
V IN
20V/DIV
1500pF
25k
330pF
V C
SYNC
GND
C SS
V BIAS
FB
27pF
165k
100k
100 μ F
6.3V
TANT
100
80
60
40
20
V IN
0V
V OUT
20mV/DIV
AC COUPLED
I OUT 250mA
LOAD DUMP
3437 TA03
50ms/DIV
COLD CRANK
*FOR INPUT VOLTAGES ABOVE 60V RESTRICTIONS APPLY
3437 TA01
0
0
10
20
30 40
50
60
70
80
INPUT VOLTAGE (V)
3437 TA02
3437fc
1
相关PDF资料 |
PDF描述 |
|---|---|
| 35112C | INDUCTOR 1.1UH 8A SMD FLAT |
| HMM08DSAN | CONN EDGECARD 16POS R/A .156 SLD |
| HSM08DSAH | CONN EDGECARD 16POS R/A .156 SLD |
| HMM08DSAH | CONN EDGECARD 16POS R/A .156 SLD |
| HCM18DRTI | CONN EDGECARD 36POS DIP .156 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3437EFE | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 3.3V to 60V 16-Pin TSSOP EP |
| LT3437EFE#PBF | 功能描述:IC REG BUCK ADJ 0.5A 16TSSOP 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 |
| LT3437EFE#TR | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 3.3V to 60V 16-Pin TSSOP EP T/R |
| LT3437EFE#TRPBF | 功能描述:IC REG BUCK ADJ 0.5A 16TSSOP 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: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 |
| LT3437EFEPBF | 制造商:Linear Technology 功能描述:Sw. Regulator 500mA 200kHz 60V TSSOP16EP |
发布紧急采购，3分钟左右您将得到回复。