- 您现在的位置：买卖IC网 > PDF目录63393 > 5962-8670402V2A (TEXAS INSTRUMENTS INC) 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CQCC20 PDF资料下载
参数资料
| 型号： | 5962-8670402V2A |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 1/8页 |
| 文件大小： | 576K |
| 代理商： | 5962-8670402V2A |
UC1842/3/4/5
UC2842/3/4/5
UC3842/3/4/5
Current Mode PWM Controller
FEATURES
Optimized For Off-line And DC
To DC Converters
Low Start Up Current (<1mA)
Automatic Feed Forward
Compensation
Pulse-by-pulse Current Limiting
Enhanced Load Response
Characteristics
Under-voltage Lockout With
Hysteresis
Double Pulse Suppression
High Current Totem Pole
Output
Internally Trimmed Bandgap
Reference
500khz Operation
Low RO Error Amp
DESCRIPTION
The UC1842/3/4/5 family of control ICs provides the necessary features to
implement off-line or DC to DC fixed frequency current mode control schemes
with a minimal external parts count. Internally implemented circuits include
under-voltage lockout featuring start up current less than 1mA, a precision
reference trimmed for accuracy at the error amp input, logic to insure latched
operation, a PWM comparator which also provides current limit control, and a
totem pole output stage designed to source or sink high peak current. The
output stage, suitable for driving N Channel MOSFETs, is low in the off state.
Differences between members of this family are the under-voltage lockout
thresholds and maximum duty cycle ranges. The UC1842 and UC1844 have
UVLO thresholds of 16V (on) and 10V (off), ideally suited to off-line
applications. The corresponding thresholds for the UC1843 and UC1845 are
8.4V and 7.6V. The UC1842 and UC1843 can operate to duty cycles
approaching 100%. A range of zero to 50% is obtained by the UC1844 and
UC1845 by the addition of an internal toggle flip flop which blanks the output
off every other clock cycle.
BLOCK DIAGRAM
A/B
Note 1:
A = DIL-8 Pin Number. B = SO-14 and CFP-14 Pin Number.
Note 2:
Toggle flip flop used only in 1844 and 1845.
SLUS223A - APRIL 1997 - REVISED MAY 2002
application
INFO
available
相关PDF资料 |
PDF描述 |
|---|---|
| 5962-8670401V2A | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CQCC20 |
| 5962-8670404PX | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP8 |
| 5962-8670402PA | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP8 |
| 5962-8670403PX | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP8 |
| 5962-8670401PX | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 5962-8670402VPA | 制造商:Texas Instruments 功能描述:Current Mode PWM Controller 1A 8-Pin CDIP |
| 5962-8670402XA | 制造商:Texas Instruments 功能描述:5962-8670402XA, CUR MODE PWM CONT - Rail/Tube |
| 596286704032A | 制造商:LINF 功能描述:_ |
| 5962-86704032A | 制造商:LINF 功能描述:_ |
| 5962-8670403DA | 制造商:Texas Instruments 功能描述:CURRENT MODE PWM CNTRLR 1A 14CFPAK - Rail/Tube |
发布紧急采购，3分钟左右您将得到回复。