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UCC2809P-1.A中文资料德州仪器数据手册PDF规格书
UCC2809P-1.A规格书详情
FEATURES
• User Programmable Soft Start With
Active Low Shutdown
• User Programmable Maximum Duty
Cycle
• Accessible 5V Reference
• Undervoltage Lockout
• Operation to 1MHz
• 0.4A Source/0.8A Sink FET Driver
• Low 100μA Startup Current
DESCRIPTION
The UCC3809 family of BCDMOS economy low power integrated circuits
contains all the control and drive circuitry required for off-line and isolated
DC-to-DC fixed frequency current mode switching power supplies with
minimal external parts count. Internally implemented circuits include
undervoltage lockout featuring startup current less than 100μA, a user accessible
voltage reference, logic to ensure latched operation, a PWM comparator,
and a totem pole output stage to sink or source peak current. The
output stage, suitable for driving N-Channel MOSFETs, is low in the off
state.
Oscillator frequency and maximum duty cycle are programmed with two
resistors and a capacitor. The UCC3809 family also features full cycle soft
start.
The family has UVLO thresholds and hysteresis levels for off-line and
DC-to-DC systems as shown in the table to the left.
The UCC3809 and the UCC2809 are offered in the 8 pin SOIC (D), PDIP
(N), TSSOP (PW), and MSOP (P) packages. The small TSSOP and
MSOP packages make the device ideal for applications where board
space and height are at a premium.
| 供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
|---|---|---|---|---|---|---|---|
TI/德州仪器 |
24+ |
NA/ |
4200 |
原厂直销,现货供应,账期支持! |
询价 | ||
TI |
24+ |
MSOP8 |
80000 |
只做自己库存 全新原装进口正品假一赔百 可开13%增 |
询价 | ||
TI |
20+ |
SOP8 |
2960 |
诚信交易大量库存现货 |
询价 | ||
量大可定TEXAS |
20+ |
MSOP8 |
49000 |
原装优势主营型号-可开原型号增税票 |
询价 | ||
Unitro |
25+ |
25000 |
原厂原包 深圳现货 主打品牌 假一赔百 可开票! |
询价 | |||
TI |
24+ |
原厂原封 |
6523 |
进口原装公司百分百现货可出样品 |
询价 | ||
TI |
25+ |
VSSOP (DGK) |
6000 |
原厂原装,价格优势 |
询价 | ||
TI/BB |
19+ |
面谈 |
6000 |
MSOP8 |
询价 | ||
TI/TEXAS |
NEW |
原厂封装 |
8931 |
代理全系列销售,全新原装正品,价格优势,长期供应,量大可订 |
询价 | ||
TexasInstruments |
18+ |
ICREGCTRLBSTFLYBKISO8VSS |
6580 |
公司原装现货/欢迎来电咨询! |
询价 |


