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PDF ISL97656 Data sheet ( Hoja de datos )
| Número de pieza | ISL97656 | |
| Descripción | Step-Up Regulator | |
| Fabricantes | Intersil | |
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Step-Up Regulator with 4A Integrated Switch
ISL97656
The ISL97656 is a high frequency, high efficiency current
mode control non-synchronous step-up voltage regulator
operated at constant PMW switching frequency. It has an
internal 4.0A, 120mΩ Low side MOSFET and can deliver high
output current and efficiency over 90%. The selectable 640kHz
and 1.22MHz switching frequency allows use of smaller
inductor and faster transient response. An external
compensation pin gives the user flexibility in setting frequency
compensation allowing the use of low ESR ceramic output
capacitors.
When in shut down mode, ISL97656 draws current <1µA and
can operate at as low as 2.2V input. These features along with
higher switching frequency allows use of tiny external
components and makes it an ideal device for portable
equipment and TFT-LCD displays.
The ISL97656 is available in a 10 Ld TDFN package with a
maximum height of 1.1mm. The device is specified for
operation over the full -40°C to +85°C temperature range.
Ordering Information
PART
NUMBER
(Notes 1, 2, 3)
PART
MARKING
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL97656IRTZ
656Z
10 Ld TDFN L10.3x3B
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details
on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special
Pb-free material sets, molding compounds/die attach materials,
and 100% matte tin plate plus anneal (e3 termination finish, which
is RoHS compliant and compatible with both SnPb and Pb-free
soldering operations). Intersil Pb-free products are MSL classified
at Pb-free peak reflow temperatures that meet or exceed the
Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information
page for ISL97656. For more information on MSL please see
techbrief TB363.
Features
• 4.0A, Low rDS(ON) Integrated Low Side MOSFET
• +2.2V to +6.0V Operating Input Voltage Range
• +1.1*VIN to +24V Output Voltage Range
• 640kHz or 1.22MHz Switching Frequency
• Higher Efficiency and Better Thermal Performance
• Adjustable Soft-Start
• Internal Thermal Protection
• 0.8mm Maximum Height 10 Ld TDFN Package
• Pb-Free (RoHS Compliant)
• Halogen Free
Applications
• Portable Equipment, Digital Cameras
• TFT-LCD Displays, DSL Modems
• PCMCIA Cards, GSM/CDMA Phones
Pin Configuration
ISL97656
(10 LD TDFN)
TOP VIEW
COMP 1
FB 2
EN 3
GND 4
GND 5
10 SS
9 FREQ
8 VIN
7 LX
6 LX
R3
3.9kΩ
C5
4.7nF
R1 86.6kΩ
R2
10kΩ
1 COMP
SS 10
2 FB
FREQ 9
C3
27nF
3 EN
VIN 8
4 GND
5 GND
LX 7
LX 6
C4
0.1µF
C3 10µH
22µF
D1
C2
22µF
FIGURE 1. TYPICAL APPLICATION CIRCUIT
INPUT
2.2V TO 6V
OUTPUT
12V
July 19, 2012
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
FN6439.6
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2007-2010, 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.
1 page  
ISL97656
Performance Curves (Continued)
0.45
VIN 5, VO = 12V, fSW = 1.22MHz
0.40
VIN 5, VO = 9V, fSW = 1.22MHz
0.35
0.30
0.25
VIN 5, VO = 9V, fSW = 640kHz
0.20
0.15
0.10
VIN 5, VO = 12V, fSW = 640kHz
0.05
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
LOAD (A)
FIGURE 8. VIN = 5V, LOAD REGULATION
0.30
VIN 3.3V, VO = 5V, fSW = 1.22MHz
0.25
VIN 3.3V, VO = 9V, fSW = 1.22MHz
0.20
VIN 3.3V, VO = 12V
0.15 fSW = 1.22MHz
VIN 3.3V, VO = 5V
fSW = 640kHz
0.10
0.05
0
0
VIN 3.3V, VO = 9V, fSW = 640kHz
VIN 3.3V, VO = 12V, fSW = 640kHz
0.1 0.2 0.3 0.4 0.5 0.6 0.7
LOAD (A)
FIGURE 9. VIN = 3.3V, LOAD REGULATION
0.8
VO = 12V
0.7 fSW = 1.22MHz
0.6
0.5
VO = 9V
fSW = 1.22MHz
0.4
VO = 5V
0.3 fSW = 1.22MHz
0.2
VO = 12V
fSW = 640kHz
0.1 VO = 9V, fSW = 640kHz
0 VO = 5V, fSW = 640kHz
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0
VIN (V)
FIGURE 10. LINE REGULATION
IO = 50mA TO 300mA
FIGURE 11. VIN = 3.3V, VO = 12V, fSW = 640kHz, TRANSIENT RESPONSE
IO = 50mA TO 300mA
FIGURE 12. VIN = 3.3V, VO = 12V, fSW = 1.22MHz, TRANSIENT RESPONSE
5
FN6439.6
July 19, 2012
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet ISL97656.PDF ] | |
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