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PDF ISL97693 Data sheet ( Hoja de datos )
| Número de pieza | ISL97693 | |
| Descripción | (ISL97692 - ISL97694A) Single Cell Li-ion Battery Powered 4-Channel and 6-Channel LED Drivers | |
| Fabricantes | Intersil | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ISL97693 (archivo pdf) en la parte inferior de esta página. Total 27 Páginas | ||
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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/
1 page  
ISL97692, ISL97693, ISL97694A
Block Diagrams (Continued)
VIN: 2.4V~5.5V
OPTIONAL FUSE
VIN
10µH
LX
EN REG
INTERNAL BIAS
O/P SHORT
OVP
OVP
FSW
OSC &
RAMP
COMP
IMAX ILIMIT
PWM/
FET
PFM DRIVERS
LOGIC
PGND
COMP
ISET
GM
AMP
8-BIT
DAC
DYNAMIC
HEADROOM
CONTROL
HIGHEST
VF
STRING
DETECT
+ REF
- GEN
+
-
REF_OVP REF_VSC
OPEN CKT, SHORT CKT
DETECTION
1
2
3
4
5
CH1
CH2
CH3
CH4
CH5
CH6
PWMI
PWM
DIMMING
CONTROLLER
+6
-
www.DataSheet.co.kr
ISL97693
TEMP
SENSOR
FIGURE 7. ISL97693 BLOCK DIAGRAM
24V, 6x30mA
5 FN7839.0
April 16, 2012
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
ISL97692, ISL97693, ISL97694A
Electrical Specifications All of the following specifications are characterized at TA = -40°C to +85°C; VIN = EN = 3.3V, RISET = 26.7kΩ
(ISL97692) or RISET = 35.5kΩ (ISL97693/4A), unless otherwise noted. Boldface limits apply over the operating temperature range, -40°C to
+85°C. (Continued)
PARAMETER
DESCRIPTION
CONDITION
MIN MAX
(Note 8) TYP (Note 8)
UNIT
DMAX
DMIN
fSW
Boost Maximum Duty Cycle
Boost Minimum Duty Cycle
Boost Switching Frequency
ILX_leakage LX Leakage Current
FSW = 400kHz
FSW = 1.5MHz
FSW = 400kHz
FSW = 1.5MHz
RFSW = 216kΩ
RFSW = 72.1kΩ
RFSW = 57.7kΩ
LX = 26V
93.5
93
11
15
360 400 440
1.2
1.35 1.5 1.65
10
%
%
%
%
kHz
MHz
MHz
µA
REFERENCE
IMATCH
Channel-to-Channel DC Current Matching
IACC Current Accuracy
FAULT DETECTION
ILED = 20mA
ILED = 20mA
-2.5
+2.5
%
-3 +3 %
VSC Channel Short Circuit Threshold
Vtemp
Over-Temperature Threshold
VOVPlo
Overvoltage Limit on OVP Pin
OVPfault
OVP Short Detection Fault Level
CURRENT SOURCES
6.75
1.180
8
150
1.22
75
9.25
1.245
V
°C
V
mV
Vheadroom
ILED(max)
Dominant Channel Current Source
Headroom at CH Pin
Maximum LED Current per Channel
ILED = 20mA
TA = +25°C
2.7V < VIN < 5.5V, VOUT = 21Vwww.DataSheet.co.kr
(ISL97692)
300
40
mV
mA
2.7V < VIN < 5.5V, VOUT = 21V
(ISL97693 and ISL97694A)
30
mA
PWM GENERATOR
VIL Guaranteed Range for PWM Input Low
Voltage
0.5 V
VIH Guaranteed Range for PWM Input High
Voltage
1.5 V
FPWMI
DPWMACC
tDPWM_ON_MIN
PWMACC
PWMI Input Frequency Range
Direct PWM Dimming Output Resolution
Direct PWM Dimming Minimum On-Time
PWM Dimming with Adjustable Dimming
Frequency Output Resolution
(ISL97692, ISL97693 and ISL97694A)
(ISL97692, ISL97693 and ISL97694A)
(ISL97692, ISL97694A)
100
30,000
Hz
80 ns
350 ns
12 bit
FPWM
Generated PWM Dimming Frequency Range (ISL97692, ISL97694A)
SMBus/I2C INTERFACE (ISL97694A only)
100
30,000
Hz
VIL Guaranteed Range for Data, Clock Input Low
Voltage
0.5 V
VIH Guaranteed Range for Data, Clock Input High
Voltage
VOL SMBus/I2C Output Data Line Logic Low IPULLUP = 4mA
Voltage
1.5 VDD V
0.17 V
ILEAK
Input Leakage On SDA/SCL
Measured at 4.8V
-10 10 µA
11
FN7839.0
April 16, 2012
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet ISL97693.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
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| ISL97692 | (ISL97692 - ISL97694A) Single Cell Li-ion Battery Powered 4-Channel and 6-Channel LED Drivers | Intersil |
| ISL97693 | (ISL97692 - ISL97694A) Single Cell Li-ion Battery Powered 4-Channel and 6-Channel LED Drivers | Intersil |
| ISL97694A | (ISL97692 - ISL97694A) Single Cell Li-ion Battery Powered 4-Channel and 6-Channel LED Drivers | Intersil |
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