Position: Home  > All Categories> Integrated Circuits (ICs) > ADM8845

ADM8845

Features: ADM8845 drives 6 LEDs from a 2.6 V to 5.5 V (li-ion) inputsupply1x/1.5x/2x Fractional Charge Pump to maximise powerefficiency1% Max LED Current MatchingUp to 88% Power Efficiency over Li-ion RangePowers Main and Sub Display LEDs with individualshutdownPackage footprint only 9mm2 (3mm x 3...

product image

ADM8845 Picture
See larger image
SeekIC No. : 004276109 Detail

ADM8845: Features: ADM8845 drives 6 LEDs from a 2.6 V to 5.5 V (li-ion) inputsupply1x/1.5x/2x Fractional Charge Pump to maximise powerefficiency1% Max LED Current MatchingUp to 88% Power Efficiency over Li-i...

ADM8845 Data Sheet

floor Price/Ceiling Price

Get Latest Price
Part Number:
ADM8845
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

SeekIC Buyer Protection PLUS - newly updated for 2013!

  • Escrow Protection.
  • Guaranteed refunds.
  • Secure payments.
  • Learn more >>

Month Sales

268 Transactions

Rating

evaluate  (4.8 stars)

Upload time: 2025/3/10

add to my favourite

Payment Methods

All payment methods are secure and covered by SeekIC Buyer Protection PLUS.

Notice: When you place an order, your payment is made to SeekIC and not to your seller. SeekIC only pays the seller after confirming you have received your order. We will also never share your payment details with your seller.
Product Details

Description



Features:

ADM8845 drives 6 LEDs from a 2.6 V to 5.5 V (li-ion) input
supply
1x/1.5x/2x Fractional Charge Pump to maximise power
efficiency
1% Max LED Current Matching
Up to 88% Power Efficiency over Li-ion Range
Powers Main and Sub Display LEDs with individual
shutdown
Package footprint only 9mm2 (3mm x 3mm)
Package height only 0.9mm
Low power shutdown mode
Shutdown Function
Soft-start limiting inrush current




Application

Mobile phones with Main and Sub Displays
White LED Backlighting
Camera Flash/Strobes and Movie Light Applications
Micro TFT color displays
DSC
PDA's




Pinout

ADM8845 Diagram

Connection Diagram




Specifications

Product Description Charge Pump Driver for 6 White LED LCD Backlights
Input Voltage Range (Vcc) 2.6 to 5.5V
Base Drive (mA) n/a
Efficency (%) 88%
LED # 6
Frequency Range 0.1 to 200 kHZ
Package 16-LFCSP


Parameter Rating
Supply Voltage VCC
ISET
CTRL1, CTRL2
VOUT shorted (Note 3)
Feedback pins FB1 to FB6
Operating Temperature Range
VOUT (Note 4)
Storage Temperature Range
Power Dissipation
ESD Class		 0.3 V to +6.0 V
0.3 V to +2.0 V
0.3 V to +6.0 V
Indefinite
0.3 V to +6.0 V
40 to +85
180mA
65 to +125
2mW
1





Description

The ADM8845 provides the power required to drive up to six LEDs, using charge pump technology. The LEDs are used for backlighting a color LCD display, with up to four LEDs in the main display and up to two LEDs in the sub display, with regulated constant current for uniform brightness intensity. Two digital input control pins o, CTRL1 and CTRL2 control the shutdown operation and the brightness of the main and sub displays.

To maximize power efficiency, a charge pump that can operate in either of a 1x, 1.5x or 2x mode is used in ADM8845. The charge pump automatically switches between 1x/1.5x/2x modes based on the input voltage, to maintain sufficient drive for the LED anodes at the highest power efficiency.

Improved brightness matching of the LEDs is achieved by the use of a feedback pin to sense individual LED current with a maximum matching accuracy of 1% inADM8845.






Customers Who Bought This Item Also Bought

Margin,quality,low-cost products with low minimum orders. Secure your online payments with SeekIC Buyer Protection.
You may also be interested in :
Tools
TCP202
G084SN05 V.3
Cables, Wires
821-0814-a
415-0100-150
Tapes, Adhesives
803
AC452-2
Batteries, Chargers, Holders
ICR18650-28A
ICR18650-26F/h
Circuit Protection
A50QS75-4Y
F-17*77
Sensors, Transducers
GP2Y0D340K
PAN3509DH-TXWA
View more