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ISL97693 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 ISL97693
部品説明 (ISL97692 - ISL97694A) Single Cell Li-ion Battery Powered 4-Channel and 6-Channel LED Drivers
メーカ Intersil
ロゴ Intersil ロゴ 



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ISL97693 Datasheet, ISL97693 PDF,ピン配置, 機能
Single Cell Li-ion Battery Powered 4-Channel and
6-Channel LED Drivers
ISL97692, ISL97693, ISL97694A
The ISL97692, ISL97693, ISL97694A are Intersil’s highly
integrated 4- and 6-channel LED drivers for single cell Li-ion
battery operated display backlighting. These parts maximize
battery life by featuring only 1mA quiescent current, and by
operating down to 2.4V input voltage, with no need for higher
voltage supplies.
The ISL97692 has 4 channels and provides 8-bit PWM
dimming with adjustable dimming frequency up to 30kHz. The
ISL97693 has 6 channels with Direct PWM dimming control.
The ISL97694A has 6 channels and provides 8-, 10-, or 12-bit
PWM dimming with adjustable dimming frequency up to
30kHz, 7.5kHz, or 1.875kHz, respectively, controlled with I2C
or PWM input.
ISL97692 and ISL97694A feature phase shifting that may be
enabled optionally, with a phase delay between channels
optimized for the number of active channels. In ISL97694A,
phase shifting can multiply the effective dimming frequency by
6 allowing above-audio PWM dimming with 10-bit dimming
resolution.
The ISL97692/3/4A employ adaptive boost architecture,
which keeps the headroom voltage as low as possible to
maximize battery life while allowing ultra low dimming duty
cycle as low as 0.005% at 100Hz dimming frequency in Direct
PWM mode.
The ISL97692/3/4A incorporate extensive protection
functions including string open and short circuit detections,
OVP, and OTP.
The ISL97692/3 are offered in the 16 Ld 3mmx3mm TQFN
package and ISL97694A is offered in the 20 Ld 3mmx4mm
TQFN package. All parts operate in ambient temperature
range of -40°C to +85°C.
Features
• Operating Input Voltage 2.4V to 5.5V - No Need for
Additional Supplies
• 4 Channels, up to 40mA Each (ISL97692) or 6 Channels, up
to 30mA Each (ISL97693/4A)
• 88% Efficient at 6P6S, 3.7V and 20mA (ISL97693/4A)
• Low 1mA Quiescent Current
• PWM Dimming Control with Internally Generated Clock
- 8-bit Resolution with Adjustable Dimming Frequency up to
30kHz (ISL97692/4A)
- 12-bit Resolution with Adjustable Dimming Frequency up
to 1.875kHz (ISL97694A)
- Optional Automatic Channel Phase Shift (ISL97692/4A)
- Linear Dimming from 0.025%~100% up to 5kHz or
0.4%~100% up to 30kHz (ISL97692/4A)
• Direct PWM Dimming with 0.005% Minimum Duty Cycle at
100Hz
• ±2.5% Output Current Matching
• Adjustable Switching Frequency from 400kHz to 1.5MHz
Applicationswww.DataSheet.co.kr
• Tablet, Notebook PC and Smart Phone Displays LED
Backlighting
Related Literature (Coming Soon)
AN1733 “ISL97694A Evaluation Board User Guide”
AN1734 “ISL97693 Evaluation Board User Guide”
AN1735 “ISL97692 Evaluation Board User Guide”
VIN: 2.4V~5.5V
10
1µF
15nF
12k
53k
4.7µF
L1
10µH
D1 VOUT: 24.5V, 6 x 20mA
4.7µF 4.7µF
VIN
COMP
LX
OVP
ISL97694A
ISET
AGND
PGND
100pF 470k
2.2nF 23.7k
291k
143k
SDA/PWMI
SCL
EN
FPWM
FSW
CH1
CH2
CH3
CH4
CH5
CH6
FIGURE 1. ISL97694A TYPICAL APPLICATION DIAGRAM
10
1
0.1
0.01
0.001
fPWM: 200Hz
fPWM: 100Hz
0.0001
0.001
0.01
0.1
1
INPUT DIMMING DUTY CYCLE (%)
FIGURE 2. ULTRA LOW PWM DIMMING LINEARITY
10
April 16, 2012
FN7839.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2012. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
Datasheet pdf - http://www.DataSheet4U.net/

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