MAX1896 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – 1.4MHz SOT23 Current-Mode Step-Up DC-DC Converter

19-2221; Rev 1; 3/04
1.4MHz SOT23 Current-Mode
Step-Up DC-DC Converter
General Description
The MAX1896 step-up DC-DC converter incorporates
high-performance current-mode, fixed-frequency,
pulse-width modulation (PWM) circuitry and an internal
0.7Ω N-channel MOSFET to provide a highly efficient
regulator with fast response.
High switching frequency (1.4MHz) allows fast loop
response and easy filtering with small components. The
MAX1896 can produce an output voltage as high as
13V from an input as low as 2.6V. Soft-start is program-
mable with an external capacitor, which sets the input
current ramp rate. In shutdown mode, current con-
sumption is reduced to 0.01µA.
The MAX1896 is available in a space-saving 6-pin
SOT23 package. The ultra-small package and high
switching frequency allow cost and space-efficient
implementations.
Features
♦ >90% Efficiency
♦ Adjustable Output Up to 13V
♦ Guaranteed 12V/120mA Output from 5V Input
♦ 2.6V to 5.5V Input Range
♦ LT1613 Pin Compatible
♦ 0.01µA Shutdown Current
♦ Programmable Soft-Start
♦ Space-Saving 6-Pin SOT23 Package
Notebook Computers
LCD Displays
PCMCIA Cards
Portable Applications
Hand-Held Devices
Applications
PART
MAX1896EUT-T
Ordering Information
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
6 SOT23-6
Typical Operating Circuit
INPUT
2.6V TO 5.5V
ON
OFF
IN
LX
MAX1896
SHDN
SS
FB
GND
R1
R2
OUTPUT
UP TO 13V
UP TO 600mA
Pin Configuration
TOP VIEW
LX 1
6 IN
MAX1896
GND 2
5 SS
FB 3
4 SHDN
SOT23
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