MP1527 Datasheet, PDF (1/14 Pages) Monolithic Power Systems – 2A, 1.3MHz Step-Up Converter

Monolithic Power Systems
MP1527
2A, 1.3MHz
Step-Up Converter
General Description
The MP1527 is a 2A, fixed frequency step-up
converter in a tiny 16 lead QFN package. The
high 1.3MHz switching frequency allows for
smaller external components producing a
compact solution for medium-to-high current
step-up, flyback, and SEPIC applications.
The MP1527 regulates the output voltage up
to 25V at efficiency as high as 93%. Soft-start,
timer-latch fault circuitry, cycle-by-cycle current
limiting, and input undervoltage lockout
prevent overstressing or damage to external
circuitry at startup and output short-circuit
conditions. Fixed frequency operation eases
control of noise making the MP1527 optimal
for noise sensitive applications such as mobile
handsets and wireless LAN PC cards.
Current-mode regulation and external
compensation components allow the MP1527
control loop to be optimized over wide variety
of input voltage, output voltage and load
current conditions.
The MP1527 is offered in a tiny 4mm x 4mm
16 lead QFN and 14 lead TSSOP packages.
Figure 1: Typical Application Circuit
V_IN = 2.6V to 25V
Features
ƒ 2A Peak Current Limit
ƒ Internal 150mΩ Power Switch
ƒ V_IN Range of 2.6V to 25V
ƒ >93% Efficiency
ƒ Zero Current Shutdown Mode
ƒ Under Voltage Lockout Protection
ƒ Timer-Latch Fault Detection
ƒ Soft Start Operation
ƒ Thermal Shutdown
ƒ Tiny 4mm x 4mm 16 pin QFN Package
ƒ Evaluation Board Available
Applications
ƒ SOHO Routers, PCMCIA Cards, Mini PCI
ƒ Handheld Computers, PDAs
ƒ Cell Phones, Digital and Video Cameras
ƒ Small LCD Display
Ordering Information
Part Number Package
Temperature
MP1527DR
QFN16 (4x4) -40° to +85°C
MP1527DM
TSSOP14
-40° to +85°C
EV0034
MP1527DR Evaluation Board
∗ For Tape & Reel, add suffix –Z (e.g. MP1527DR–Z)
For Lead Free, add suffix –LF (e.g. MP1527DR–LF–Z)
FAULT
ON/OFF
IN
FAULT
SW
EN
SS
BP
FB
COMP
SGND PGND
V_OUT = 3.3V to 25V
MP1527 Rev 1.8_8/31/05
Monolithic Power Systems, Inc.
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