Rainbow Electronics MAX17067 - Manual

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
0.15
Ω 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.
Application
LCD Displays
Features
♦ 90% Efficiency
♦ Adjustable Output from V
IN to 18V
♦ 2.4A, 0.15Ω, 22V Power MOSFET
♦ +2.6V to +4.0V Input Range
♦ Pin-Selectable 640kHz or 1.2MHz Switching
Frequency
♦ Programmable Soft-Start
♦ Small 8-Pin µMAX Package
♦ Integrated Input Voltage Clamp Circuit
MAX17067
Low-Noise Step-Up DC-DC Converter
________________________________________________________________ Maxim Integrated Products 1
IN
LX GND
1
2
3
4
8
7
6
5
SS
FREQ FB
COMP
μMAX
TOP VIEW
MAX17067
SHDN
LX
IN
V IN
2.6V TO 4V
GND FREQ
V OUT
COMP
SHDN
FB
MAX17067
ON/OFF
SS
Typical Operating Circuit
19-3106; Rev 0; 1/08
Pin Configuration
Ordering Information
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.
EVALUATION KIT
AVAILABLE
PART TEMP RANGE
PIN-
PACKAGE PKG
CODE
MAX17067EUA+ -40°C to +85°C 8 μMAX U8+1
μMAX is a registered trademark of Maxim Integrated Products, Inc.
+ Denotes a lead-free package.