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参数资料
| 型号： | TS3405 |
| 厂商： | Taiwan Semiconductor Co., Ltd. |
| 英文描述： | Single Synchronous Buck PWM Controller |
| 中文描述： | 单同步降压PWM控制器 |
| 文件页数： | 1/10页 |
| 文件大小： | 409K |
| 代理商： | TS3405 |
TS3404
Single Synchronous Buck PWM Controller
8. Phase
Oscillator Frequency up to 300KHz
0.8V Internal Reference
Drives N-Channel MOSFETs
General Description
The TS3405 makes simple work out of implementing a complete control and protection scheme for a DC-DC step-down
converter. Designed to drive N-channel MOSFETs in a synchronous buck topology, the TS3405 integrates the control,
output a adjustment, monitoring and protection functions.
The TS3405 provides simple, single feedback loop, voltage mode control with fast transient response. The output voltage
can be precisely regulated to as low as 0.8V, with a maximum tolerance of ±1.5% over temperature and line voltage
variations. A fixed frequency oscillator reduces design complexity, while balancing typical application cost and efficiency.
The error amplifier features a 15MHz gain-bandwidth product and 8V/uS slew rate, which enables high converter
bandwidth for fast transient performance. The resulting PWM duty cycles range from 0% to 100%. The protection from
over current conditions is provided by monitoring the Rds(on) of the lower MOSFET to inhibit PWM operation
appropriately. This approach simplifies the implementation and improves efficiency by eliminating the need for a current
sense resistor.
Applications
Power supplies for microprocessors
Subsystem power supplies
Cable modems, set-top box, DSL modems
DSP and core communications processor supplies
Memory supplies
Personal computer peripherals
Industrial power supplies
Low-voltage distributed power supplies
Features
Buck converter Vin operate from 3.3V ~ 14V
Vcc operate from 3.75V ~ 6V
Buck converter Vin can be greater than Vcc
0.8V to Vin output voltage
±1.5% over line voltage and temperature
Simple single –loop control design
Voltage-mode PWM control
Loss less, programmable over current protection
uses lower MOSFET’s Rds(on)
Internal soft start
Converter can source and sink current
Fixed oscillator frequency 300KHz
Ordering Information
Part No.
TS3405CS
Operating Temp.
-40 ~ +85
o
C
Package
SOP-8
Absolute Maximum Rating
Supply Voltage
V
CC
6
V
Operating Supply Voltage
V
CC
4.5 ~ 5.5
V
Absolute Boot Voltage
V
BOOT
20
V
Upper Driver Supply Voltage
V
BOOT
V
PHASE
20
V
Input, Output or I/O Voltage
Gnd-0.3V to Vcc+0.3V
V
Operating Junction Temperature Range
T
J
-40 ~ +125
o
C
Ambient Temperature Range
T
J
-40 ~ +85
o
C
Storage Temperature Range
T
STG
-65 ~ +150
o
C
Lead Temperature 1.6mm(1/16”) from case for 10Sec.
T
LEAD
260
o
C
Pin assignment
1. Boot
2. Ugate 7. COMP
3. Gnd
4. Lgate
6. FB
5. Vcc
TS3405
1-10
2003/12 rev. A
相关PDF资料 |
PDF描述 |
|---|---|
| TS3405CS | Single Synchronous Buck PWM Controller |
| TS34063A | Dc to Dc Converter Controller |
| TS34063ACD | Dc to Dc Converter Controller |
| TS34063ACS | Dc to Dc Converter Controller |
| TS34063 | Dc to Dc Converter Controller |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TS3405CS | 制造商:TSC 制造商全称:Taiwan Semiconductor Company, Ltd 功能描述:Single Synchronous Buck PWM Controller |
| TS3406 | 制造商:TSC 制造商全称:Taiwan Semiconductor Company, Ltd 功能描述:600mA / 1.5MHz Synchronous Buck Converter |
| TS3406_08 | 制造商:TSC 制造商全称:Taiwan Semiconductor Company, Ltd 功能描述:600mA / 1.5MHz Synchronous Buck Converter |
| TS3406_13 | 制造商:TSC 制造商全称:Taiwan Semiconductor Company, Ltd 功能描述:600mA / 1.5MHz Synchronous Buck Converter |
| TS34063 | 制造商:TSC 制造商全称:Taiwan Semiconductor Company, Ltd 功能描述:Dc to Dc Converter Controller |
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