- 您现在的位置：买卖IC网 > PDF目录150839 > TPS5633PWP (TEXAS INSTRUMENTS INC) 2 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 PDF资料下载
参数资料
| 型号： | TPS5633PWP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 2 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | GREEN, PLASTIC, HTSSOP-28 |
| 文件页数： | 25/28页 |
| 文件大小： | 568K |
| 代理商： | TPS5633PWP |
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页当前第25页第26页第27页第28页
TPS5615, TPS5618, TPS5625, TPS5633
SYNCHRONOUS-BUCK HYSTERETIC REGULATOR CONTROLLER
SLVS177B SEPTEMBER 1998 REVISED JULY 2000
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
R2
+ 2.1
R1
V
TRIP
–2.1
Where
VTRIP=desired VSUPPLY trip voltage
R2
INHIBIT
TPS56xx
R1
To Power Stage
SHUTDOWN
VCC
Figure 4. Input Undervoltage Lockout Circuit Using INHIBIT
VCC undervoltage lockout (UVLO)
The undervoltage lockout circuit disables the controller while the VCC supply is below the 10-V start threshold
during power up. While the controller is disabled, the output drivers will be low and the slowstart capacitor will
be shorted. When VCC exceeds the start threshold, the short across the slowstart capacitor is released and
normal converter operation begins. There is a 2-V hysteresis in the undervoltage lockout circuit for noise
immunity.
slowstart
The slowstart circuit controls the rate at which VO powers up. A capacitor is connected between SLOWSST and
ANAGND and is charged by an internal current source. The slowstart charging current is determined by the
following equation:
I
SLOWSTART +
I(VREFB)
5
where I(VREFB) is the current flowing out of VREFB. It is recommended that no additional loads be connected
to VREFB, other than the resistor divider for setting the hysteresis voltage. The maximum current that can be
sourced by the VREFB circuit is 500
μA. The slowstart time is set by:
t
SLOWSTART +
5
C
SLOWST
R
VREFB
where RVREFB is the total external resistance from VREFB to ANAGND.
power good
The power good circuit monitors for an undervoltage condition on VO. If VO is 7% below VREF, then PWRGD
is pulled low. PWRGD is an open-drain output.
overvoltage protection
The overvoltage protection (OVP) circuit monitors VO for an overvoltage condition. If VO is 15% above VREF,
then a fault latch is set and both output drivers are turned off. The latch will remain set until VCC goes below the
undervoltage lockout value. A 3-
μs deglitch timer is included for noise immunity. Refer to the LODRV section
for information on how to protect the load against overvoltages due to a shorted fault across the high-side power
FET.
相关PDF资料 |
PDF描述 |
|---|---|
| TC74A0-3.3VAT | SPECIALTY ANALOG CIRCUIT, PSFM5 |
| TC74A7-3.3VAT | SPECIALTY ANALOG CIRCUIT, PSFM5 |
| TS3431CIZ-AP | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PBCY3 |
| TX10005JASLPLDH | 1-OUTPUT 1000 W AC-DC PWR FACTOR CORR MODULE |
| TB6526AF | STEPPER MOTOR CONTROLLER, 0.12 A, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS5633PWPG4 | 功能描述:DC/DC 开关控制器 High Crnt Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS5633PWPR | 功能描述:DC/DC 开关控制器 High Crnt Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS5633PWPRG4 | 功能描述:DC/DC 开关控制器 High Crnt Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS563900DAPR | 功能描述:Buck Switching Regulator IC Positive Adjustable (Programmable) 0.68V 2 Output 3.5A 32-TSSOP (0.240", 6.10mm Width) Exposed Pad 制造商:texas instruments 系列:- 包装:剪切带（CT） 零件状态:有效 功能:降压 输出配置:正 拓扑:降压 输出类型:可调节（可编程） 输出数:2 电压 - 输入（最小值）:4.5V 电压 - 输入（最大值）:18V 电压 - 输出（最小值/固定）:0.68V 电压 - 输出（最大值）:1.95V 电流 - 输出:3.5A 频率 - 开关:200kHz ~ 1.6MHz 同步整流器:是 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:32-TSSOP（0.240"，6.10mm 宽）裸焊盘 供应商器件封装:32-HTSSOP 标准包装:1 |
| TPS564201DDCR | 功能描述:IC REG BUCK ADJ 4A SYNC 6SOT 制造商:texas instruments 系列:D-CAP2?? 包装:剪切带（CT） 零件状态:在售 功能:降压 输出配置:正 拓扑:降压 输出类型:可调式 输出数:1 电压 - 输入（最小值）:4.5V 电压 - 输入（最大值）:17V 电压 - 输出（最小值/固定）:0.76V 电压 - 输出（最大值）:7V 电流 - 输出:4A 频率 - 开关:560kHz 同步整流器:是 工作温度:-40°C ~ 125°C （TJ） 安装类型:表面贴装 封装/外壳:SOT-23-6 细型，TSOT-23-6 供应商器件封装:SOT-23-6 标准包装:1 |
发布紧急采购，3分钟左右您将得到回复。