データシートサーチシステム
  Japanese  ▼
ALLDATASHEET.JP

X  

LM27961 データシート(PDF) 1 Page - Texas Instruments

部品番号 LM27961
部品情報  Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

LM27961 データシート(HTML) 1 Page - Texas Instruments

  LM27961 Datasheet HTML 1Page - Texas Instruments LM27961 Datasheet HTML 2Page - Texas Instruments LM27961 Datasheet HTML 3Page - Texas Instruments LM27961 Datasheet HTML 4Page - Texas Instruments LM27961 Datasheet HTML 5Page - Texas Instruments LM27961 Datasheet HTML 6Page - Texas Instruments LM27961 Datasheet HTML 7Page - Texas Instruments LM27961 Datasheet HTML 8Page - Texas Instruments LM27961 Datasheet HTML 9Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 16 page
background image
CIN
1 PF
3/2x Charge Pump
(1x when VIN > 4.7V)
C1
1 PF
C2
1 PF
CPOUT
1 PF
ENA
ENB
C1+
C1-
C2+
C2-
POUT
D1B
D2B
D3B
ISETB
VIN
VIN
2.7V to 5.5V
RSETB
GND
LM27961
Capacitors:
TDK C1608X5R1A105K,
or equivalent
D1A
D2A
D3A
D4A
ISETA
RSETA
LM27961
www.ti.com
SNVS326 – NOVEMBER 2004
LM27961 Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
Check for Samples: LM27961
1
FEATURES
2
Drives 4 Individual Common-Anode LEDs with
PWM Brightness Control: 100Hz - 1kHz
up to 20mA each for a Main Display Backlight
18-bump Thin Micro SMD Package: (2.1mm x
Drives 3 Individual Common-Cathode LEDs
2.4mm x 0.6mm)
with up to 20mA each for a Sub-Display
Backlight
APPLICATIONS
Independent Resistor-Programmable Current
Mobile Phone Display Lighting
Setting
Mobile Phone Keypad Lighting
Excellent Current and Brightness Matching
PDAs
High-Efficiency 3/2x Charge Pump
General LED Lighting
Extended Li-Ion Input: 2.7V to 5.5V
DESCRIPTION
The LM27961 is a charge-pump-based white-LED driver that is ideal for mobile phone display backlighting. It is
intended to drive 4 LEDs for a main phone display backlight and 3 LEDs for a sub-display backlight. Regulated
internal current sources deliver excellent current and brightness matching in all LEDs.
The LED driver current sources are split into two independently controlled groups. The primary group (Group A)
can be used to backlight a main phone display with up to 4 LEDs. The low-side current drivers of Group A
accommodate common-anode-type LEDs. The second group (Group B) can backlight a secondary display with
up to 3 LEDs. The high-side current drivers of Group B accommodate common-cathode-type LEDs. Both Group
A and Group B can also drive standard two-terminal LEDs, and provide other general lighting functions (keypad
lighting, fun lighting, etc). The brightness of the two LED groups can be adjusted independently with external
resistors.
The LM27961 works off an extended Li-Ion input voltage range (2.7V to 5.5V). Voltage boost is achieved with a
high-efficiency 3/2×-gain charge pump.
The LM27961 is available in National’s chip-scale 18-bump micro SMD package.
Typical Application Circuit
1
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.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2004, 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.


同様の部品番号 - LM27961

メーカー部品番号データシート部品情報
logo
National Semiconductor ...
LM27961 NSC-LM27961 Datasheet
711Kb / 13P
   Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
LM27961TL NSC-LM27961TL Datasheet
711Kb / 13P
   Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
LM27961TLX NSC-LM27961TLX Datasheet
711Kb / 13P
   Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
More results

同様の説明 - LM27961

メーカー部品番号データシート部品情報
logo
Eutech Microelectronics...
EUP2796 EUTECH-EUP2796 Datasheet
263Kb / 9P
   Dual-Display White LED Driver with 3/2X Switched Capacitor Boost
logo
National Semiconductor ...
LM2796 NSC-LM2796 Datasheet
172Kb / 8P
   Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
logo
Texas Instruments
LM2796 TI1-LM2796 Datasheet
777Kb / 14P
[Old version datasheet]   Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
logo
National Semiconductor ...
LM27961 NSC-LM27961 Datasheet
711Kb / 13P
   Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
logo
Texas Instruments
LM2796 TI1-LM2796_16 Datasheet
782Kb / 16P
[Old version datasheet]   LM2796 Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
logo
National Semiconductor ...
LM27953 NSC-LM27953 Datasheet
681Kb / 11P
   White LED Driver with Four LED Current Sinks and 3/2x Switched Capacitor Boost
LM2751 NSC-LM2751 Datasheet
8Kb / 11P
   Regulated 2X, 1.5X Switched Capacitor White LED Driver
logo
Texas Instruments
LM2751SD-B TI-LM2751SD-B Datasheet
1Mb / 19P
[Old version datasheet]   LM2751 Regulated 2X, 1.5X Switched Capacitor White LED Driver
LM2751 TI1-LM2751 Datasheet
1Mb / 19P
[Old version datasheet]   LM2751 Regulated 2X, 1.5X Switched Capacitor White LED Driver
LM27951 TI1-LM27951_16 Datasheet
873Kb / 20P
[Old version datasheet]   White LED Adaptive 1.5/1 Switched-Capacitor Current Driver
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


データシート ダウンロード

Go To PDF Page


リンク URL




プライバシーポリシー
ALLDATASHEET.JP
ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   リンク交換   |   メーカーリスト
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