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ADP3088ARMZ

Description
IC 1.4 A SWITCHING REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PDSO8, MSOP-8, Switching Regulator or Controller
CategoryPower/power management    The power supply circuit   
File Size774KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

ADP3088ARMZ Overview

IC 1.4 A SWITCHING REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PDSO8, MSOP-8, Switching Regulator or Controller

ADP3088ARMZ Parametric

Parameter NameAttribute value
Parts packaging codeMSOP
package instructionTSSOP,
Contacts8
Reach Compliance Codeunknown
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage11 V
Minimum input voltage2.5 V
Nominal input voltage3.3 V
JESD-30 codeS-PDSO-G8
length3 mm
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current1.4 A
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Package shapeSQUARE
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Certification statusNot Qualified
Maximum seat height1.1 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency1250 kHz
Temperature levelINDUSTRIAL
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
width3 mm
Base Number Matches1
a
FEATURES
1 MHz PWM Frequency
Automatic PWM to Power Saving Mode at Light Load
Fully Integrated 1 A Power Switch
3% Output Regulation Accuracy over Temperature,
Line, and Load
100% Duty Cycle Operation
Simple Compensation
Output Voltage: 1.25 V to 10.5 V
Small Inductor and MLC Capacitors
Low Quiescent Current while Pulse Skipping
Thermal Shutdown
Fully Integrated Soft Start
Cycle-by-Cycle Current Limit
APPLICATIONS
PDAs and Palmtop Computers
Notebook Computers
PCMCIA Cards
Bus Products
Portable Instruments
1 MHz, 750 mA Buck Regulator
ADP3088
FUNCTIONAL BLOCK DIAGRAM
IN
IN
CURRENT
SENSE
PWM
1MHz
AMP
COMPARATOR
S
Q
R
SW
DRV
TE
PROTECTION
LOGIC
(ILIM, OT)
ERROR
AMP
g
m
GND
GND
RUN/STOP
COMPARATORS
FB
COMP
GENERAL DESCRIPTION
LE
V
IN
3.3V
10 F
IN
0.1 F
IN
4.7pF
220pF
20k
ADP3088
+ REF
1.245V
SOFT START
TIMER
ADP3088
SW
DRV
GND
FB
3.3 H
V
OUT
1.8V
10.0k
1N5817
10 F
22.4k
SO
The ADP3088 is a high frequency, nonsynchronous PWM step-
down dc-to-dc regulator with an integrated 1 A power switch
in a space-saving MSOP-8 package. It provides high efficiency
and excellent dynamic response and is very simple to use.
GND
COMP
B
The ADP3088’s 1 MHz switching frequency allows for small,
inexpensive external components, and the current mode control
loop is simple to compensate and eases noise filtering. The device
operates in PWM current mode under heavy loads and saves
energy at lighter loads by switching automatically into power
saving mode. Soft start is integrated completely on-chip, as is
the cycle-by-cycle current limit.
Capable of operating from 2.5 V to 11 V input, the ADP3088 is
ideal for many applications, including portable, battery-powered
applications where local point-of-use power regulation is
required. Supporting output voltages down to 1.25 V, the
ADP3088 is ideal for generating low voltage rails, providing
the optimal solution in its class for delivering power efficiently,
responsively, and simply with a minimal printed circuit board area.
The device is specified over the industrial temperature range of
–40∞C to +85∞C.
Figure 1. Typical Application
REV. C
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
O
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© 2004 Analog Devices, Inc. All rights reserved.
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