Rainbow Electronics MAX15032 - Manual

General Description
The MAX15032 constant-frequency, pulse-width-modu-
lating (PWM), low-noise boost converter is intended for
low-voltage systems that need a locally generated high
voltage. This device is capable of generating low-noise,
high output voltages, with an output power capability
up to 600mW with a 2.9V input voltage. This device can
be used for a wide variety of applications, such as PIN
or varactor diode biasing and LCD displays. The
MAX15032 operates from +2.7V to +11V.
The constant-frequency (500kHz), current-mode PWM
architecture provides low-noise output voltage that is
easy to filter. A high-voltage internal lateral DMOS
power switch allows this device to boost output volt-
ages up to 36V. The MAX15032 features a shutdown
mode to save power.
The MAX15032 is available in a small thermally
enhanced 3mm x 3mm 8-pin TDFN package and is
specified for operation over the -40°C to +125°C auto-
motive temperature range.
Applications
Avalanche Photodiode Biasing
PIN Diode Bias Supplies
Low-Noise Varactor Diode Bias Supplies
STB Audio IC Supplies
LCD Displays
Features
♦ Input Voltage Range
+2.7V to +5.5V (Using Internal Charge Pump)
+5.5V to +11V
♦ Wide Adjustable Output Voltage Range: (V
IN + 1V)
to 36V
♦ Output Power: ≥ 600mW for V
IN
≥ 2.9V
♦ Internal 0.5Ω (typ), 40V Switch
♦ Constant PWM Frequency Provides Easy Filtering
in Low-Noise Applications
♦ 500kHz (typ) Switching Frequency
♦ 0.5µA (max) Shutdown Current
♦ Internal Soft-Start
♦ Small Thermally Enhanced 3mm x 3mm 8-Pin
TDFN Package
MAX15032
500kHz, 36V Output, 600mW PWM
Step-Up DC-DC Converter
________________________________________________________________ Maxim Integrated Products 1
1
+
3 4
8 6 5
PGND CN IN
MAX15032
2
7
CP
LX FB SHDN GND
TDFN
TOP VIEW
Pin Configuration
Ordering Information
MAX15032
IN V IN = 2.7V TO 5.5V
V OUT
36V
SHDN
PGND
LX
FB
CP
CN
GND
R1
D1
L1
R2
C
IN
C
OUT
C CP
Typical Operating Circuit
19-4232; Rev 0; 8/08
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.
PART TEMP RANGE
PIN-
PACKAGE TOP
MARK
MAX15032ATA+T -40°C to +125°C 8 TDFN-EP* +BKP
+ Denotes a lead-free/RoHS-compliant package.
T = Tape and reel.
* EP = Exposed pad.