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| 型号： | LT3435EFE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 3A 16TSSOP |
| 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： | 500kHz |
| 电流 - 输出： | 3A |
| 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： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-TSSOP-EP |
LT3435
High Voltage 3A, 500kHz
Step-Down Switching Regulator
with 100 μ A Quiescent Current
FEATURES
DESCRIPTIO
■
■
■
■
■
■
Wide Input Range: 3.3V to 60V
3A Peak Switch Current
Burst Mode ? Operation: 100 μ A Quiescent Current**
Low Shutdown Current: I Q < 1 μ A
Power Good Flag with Programmable Threshold
Load Dump Protection to 60V
The LT ? 3435 is a 500kHz monolithic buck switching
regulator that accepts input voltages up to 60V. A high
efficiency 3A, 0.1 ? switch is included on the die along with
all the necessary oscillator, control and logic circuitry.
Current mode topology is used for fast transient response
and good loop stability.
■ 500kHz Switching Frequency
■ Saturating Switch Design: 0.1? On-Resistance
■ Peak Switch Current Maintained Over
Full Duty Cycle Range*
■ 1.25V Feedback Reference Voltage
■ Easily Synchronizable
■ Soft-Start Capability
■ Small 16-Pin Thermally Enhanced TSSOP Package
APPLICATIO S
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. Patented circuitry maintains peak switch current
over the full duty cycle range.* Shutdown reduces input
supply current to less than 1 μ A. External synchronization
can be implemented by driving the SYNC pin with logic-level
■
■
■
■
■
■
High Voltage Power Conversion
14V and 42V Automotive Systems
Industrial Power Systems
Distributed Power Systems
Battery-Powered Systems
USB Powered Systems
inputs. A single capacitor from the C SS pin to the output
provides a controlled output voltage ramp (soft-start). The
device also has a power good flag with a programmable
threshold and time-out and thermal shutdown protection.
The LT3435 is available in a 16-pin TSSOP package with an
exposed pad leadframe for low thermal resistance.
, LTC and LT 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.
TYPICAL APPLICATIO
Efficiency and Power Loss
100V
SW
0.1 μ F
V IN
14V to 3.3V Step-Down Converter with
100 μ A No Load Quiescent Current
V IN BOOST
4.7 μ F 0.33 μ F 15 μ H 4148
SHDN
CER LT3435
B360A
V OUT
3.3V
2A
Supply Current vs Input Voltage
150
V OUT = 3.3V
T A = 25 ° C
125
100
100
90
80
70
60
vs Load Current
V IN = 12V
V OUT = 5V
EFFICIENCY
10
1
4700pF
10k
1 μ F
470pF
V C
C T
SYNC
C SS
V BIAS
FB
PGFB
27pF
165k
1%
100k
+
100 μ F
10V
TANT
75
50
25
50
40
30
20
V OUT = 3.3V
TYPICAL
POWER LOSS
0.1
0.01
GND
PG
1%
0
10
0
0.001
3435 TA01
0
10
20
30 40
50
60
0.0001
0.001
0.01
0.1
1
10
INPUT VOLTAGE (V)
3435 TA03
LOAD CURRENT (A)
3435 TA02
3435fa
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3435IFE | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage 3A, 500kHz Step-Down Switching Regulator with 100? Quiescent Current |
| LT3435IFE#PBF | 功能描述:IC REG BUCK ADJ 3A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT3435IFE#TRPBF | 功能描述:IC REG BUCK ADJ 3A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT3436 | 制造商:LINER 制造商全称:Linear Technology 功能描述:3A, 800kHz Step-Up Switching Regulator |
| LT3436EFE | 功能描述:IC REG BOOST ADJ 3A 16TSSOP 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 |
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