Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

TL3845BD Scheda tecnica(PDF) 1 Page - Texas Instruments

Click here to check the latest version.
Il numero della parte TL3845BD
Spiegazioni elettronici  HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
Download  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

TL3845BD Scheda tecnica(HTML) 1 Page - Texas Instruments

  TL3845BD Datasheet HTML 1Page - Texas Instruments TL3845BD Datasheet HTML 2Page - Texas Instruments TL3845BD Datasheet HTML 3Page - Texas Instruments TL3845BD Datasheet HTML 4Page - Texas Instruments TL3845BD Datasheet HTML 5Page - Texas Instruments TL3845BD Datasheet HTML 6Page - Texas Instruments TL3845BD Datasheet HTML 7Page - Texas Instruments TL3845BD Datasheet HTML 8Page - Texas Instruments TL3845BD Datasheet HTML 9Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 24 page
background image
www.ti.com
FEATURES
1
2
3
4
8
7
6
5
COMP
VFB
ISENSE
RT/CT
VREF
VCC
OUTPUT
GND
D (SOIC) OR P (PDIP) PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
COMP
NC
VFB
NC
ISENSE
NC
RT/CT
VREF
NC
VCC
VC
OUTPUT
GND
POWER GROUND
D (SOIC) PACKAGE
(TOP VIEW)
NC − No internal connection
DESCRIPTION/ORDERING INFORMATION
TL284xB, TL384xB
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
• Low Start-Up Current (<0.5 mA)
• Trimmed Oscillator Discharge Current
• Current Mode Operation to 500 kHz
• Automatic Feed-Forward Compensation
• Latching PWM for Cycle-by-Cycle Current
Limiting
• Internally Trimmed Reference With
Undervoltage Lockout
• High-Current Totem-Pole Output Undervoltage
Lockout With Hysteresis
• Double-Pulse Suppression
The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary to
implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of
external components. Internally implemented circuits include an undervoltage lockout (UVLO) and a precision
reference that is trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensure
latched operation, a pulse-width modulation (PWM) comparator that 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 when it is in the off state.
The TL284xB and TL384xB series are pin compatible with the standard TL284x and TL384x with the following
improvements. The start-up current is specified to be 0.5 mA (max), while the oscillator discharge current is
trimmed to 8.3 mA (typ). In addition, during undervoltage lockout conditions, the output has a maximum
saturation voltage of 1.2 V while sinking 10 mA (VCC = 5 V).
Major differences between members of these series are the UVLO thresholds and maximum duty-cycle ranges.
Typical UVLO thresholds of 16 V (on) and 10 V (off) on the TLx842B and TLx844B devices make them ideally
suited to off-line applications. The corresponding typical thresholds for the TLx843B and TLx845B devices are
8.4 V (on) and 7.6 V (off). The TLx842B and TLx843B devices can operate to duty cycles approaching 100%. A
duty-cycle range of 0% to 50% is obtained by the TLx844B and TLx845B by the addition of an internal toggle
flip-flop, which blanks the output off every other clock cycle.The TL284xB-series devices are characterized for
operation from –40
°C to 85°C. The TL384xB-series devices are characterized for operation from 0°C to 70°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006–2007, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


Codice articolo simile - TL3845BD

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Texas Instruments
TL3845BD TI-TL3845BD Datasheet
339Kb / 21P
[Old version datasheet]   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
TL3845BD TI-TL3845BD Datasheet
343Kb / 21P
[Old version datasheet]   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
TL3845BD-8 TI-TL3845BD-8 Datasheet
339Kb / 21P
[Old version datasheet]   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
TL3845BD-8 TI-TL3845BD-8 Datasheet
343Kb / 21P
[Old version datasheet]   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
TL3845BDG4 TI-TL3845BDG4 Datasheet
343Kb / 21P
[Old version datasheet]   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
More results

Descrizione simile - TL3845BD

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Cystech Electonics Corp...
PL384XBP8 CYSTEKEC-PL384XBP8 Datasheet
278Kb / 15P
   High Performance Current Mode PWM Controllers
logo
Unisonic Technologies
UC2844-45 UTC-UC2844-45 Datasheet
295Kb / 7P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
logo
Gamma Microelectronics ...
GM3842A GAMMA-GM3842A Datasheet
628Kb / 19P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
logo
Unisonic Technologies
UC2844 UTC-UC2844_16 Datasheet
228Kb / 6P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UC2844 UTC-UC2844_12 Datasheet
294Kb / 7P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UC2843B UTC-UC2843B_15 Datasheet
285Kb / 8P
   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
UC2845 UTC-UC2845_15 Datasheet
294Kb / 7P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UC3844 UTC-UC3844 Datasheet
298Kb / 7P
   HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
logo
Cystech Electonics Corp...
PL384XAQ8 CYSTEKEC-PL384XAQ8 Datasheet
281Kb / 15P
   High Performance Current Mode PWM Controllers
logo
Unisonic Technologies
UC2843B UTC-UC2843B_13 Datasheet
285Kb / 8P
   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
UC2843B UTC-UC2843B Datasheet
210Kb / 9P
   HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24


Scheda tecnica Scarica

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEETIT.COM
Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   scambio Link   |   Ricerca produttore
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com