ISL8107 Datasheet, PDF (1/16 Pages) Intersil Corporation – Single-Phase Pulse-Width Modulation PWM Controller with Integrated High-Side Gate Drivers

®
Data Sheet
October 29, 2008
ISL8107
FN6605.0
Single-Phase Pulse-Width Modulation
(PWM) Controller with Integrated
High-Side Gate Drivers
The ISL8107 is a single phase, non-synchronous buck
controller with an integrated high-side MOSFET driver. The
controller operates from 9V to 75V input voltage range. The
internal 1.192V reference voltage has a tolerance of ±1%
over the industrial temperature range.
The ISL8107 employs voltage-mode control with
feedforward compensation to provide optimal transient
response and a constant loop gain over a wide input voltage
range. The switching frequency can be programmed from
100kHz to 600kHz by external resistor and capacitor. The
switching frequency can be synchronized to an external
clock signal through the SYNC pin.
The ISL8107 features programmable soft-start, hiccup mode
for short circuit protection, and over-temperature protection.
The overcurrent protection is implemented using MOSFET’s
r_DS(ON) sensing. This approach simplifies the implementation
without deteriorating the converter efficiency.
Pinout
ISL8107
(16 LD 5X5 QFN)
TOP VIEW
16 15 14 13
VFF 1
OCSET 2
VCC 3
SYNC 4
12 EN/SS
11 PGND
10 PGOOD
9 VBG
5678
Features
• Operates from +9V to +75V Bias Supply Voltage
• +1.192V Internal Voltage Reference
- ±1% tolerance Over the Industrial Temperature Range
• Programmable Switching Frequency 100kHz to 600kHz
• Simple Single-Loop Voltage Mode Control
• Voltage Feedforward Compensation
• Switching Frequency Synchronization
• Lossless, Programmable Overcurrent Protection
- Uses MOSFET’s r_DS(ON)
- Hiccup Mode
• Integrated N-Channel MOSFET Gate Drivers
• Programmable Soft-Start
• Over-Temperature Protection
• QFN (5x5) Package
- QFN Compliant to JEDEC PUB95 MO-220 QFN - Quad
Flat No Leads - Product Outline
- QFN Near Chip Scale Package Footprint; Improves
PCB Efficiency, Thinner in Profile
• Pb-Free (RoHS Compliant)
Applications
• Test and Measurement Instruments
• Routers and Switchers
• Point of Load Modules
• Distributed DC/DC Power Architecture
• Industrial Applications
• Telecom/Datacom Applications
Ordering Information
PART
NUMBER
(Note)
PART
TEMP.
PACKAGE
MARKING RANGE (°C) (Pb-Free)
PKG.
DWG. #
ISL8107IRZ ISL8107 IRZ -40 to +85 16 Ld 5x5 QFN L16.5x5B
ISL8107IRZ-T* ISL8107 IRZ -40 to +85 16 Ld 5x5 QFN L16.5x5B
Tape and Reel
*Please refer to TB347 for details on reel specifications.
NOTE: 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.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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