MAX17067 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – Low-Noise Step-Up DC-DC Converter

19-3106; Rev 0; 1/08
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Low-Noise Step-Up DC-DC Converter
General Description
The MAX17067 boost converter incorporates high-
performance (at 1.2MHz), current-mode, fixed-frequency,
pulse-width modulation (PWM) circuitry with a built-in
0.15Ω n-channel MOSFET to provide a highly efficient
regulator with fast response.
High switching frequency (640kHz or 1.2MHz selectable)
allows for easy filtering and faster loop performance. An
external compensation pin provides the user flexibility in
determining loop dynamics, allowing the use of small,
low equivalent-series-resistance (ESR) ceramic output
capacitors. The device can produce an output voltage
as high as 18V.
Soft-start is programmed with an external capacitor, which
sets the input-current ramp rate. The MAX17067 is avail-
able in a space-saving 8-pin μMAX^® package. The ultra-
small package and high switching frequency allow the
total solution to be less than 1.1mm high.
Features
o 90% Efficiency
o Adjustable Output from V_IN to 18V
o 2.4A, 0.15Ω, 22V Power MOSFET
o +2.6V to +4.0V Input Range
o Pin-Selectable 640kHz or 1.2MHz Switching
Frequency
o Programmable Soft-Start
o Small 8-Pin µMAX Package
o Integrated Input Voltage Clamp Circuit
LCD Displays
Application
Typical Operating Circuit
VIN
2.6V TO 4V
Ordering Information
PART
TEMP RANGE ^PIN-
PACKAGE
MAX17067EUA+ -40°C to +85°C 8 μMAX
+ Denotes a lead-free package.
PKG
CODE
U8+1
Pin Configuration
ON/OFF
IN
SHDN
LX
MAX17067
FREQ
GND
SS
FB
COMP
TOP VIEW
VOUT
COMP 1
8 SS
FB 2
SHDN 3
MAX17067
7 FREQ
6 IN
GND 4
5 LX
μMAX
μMAX is a registered trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.