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LM43600PWPT Datasheet(PDF) 1 Page - Texas Instruments

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Part # LM43600PWPT
Description  SIMPLE SWITCHER 3.5 V to 36 V 0.5 A Synchronous Step-Down Voltage Converter
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM43600PWPT Datasheet(HTML) 1 Page - Texas Instruments

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EN 55022 Class B Limit
Frequency (MHz)
dBuV
80
70
60
50
40
30
20
10
30
Evaluation Board Emissions
1000
100
Vertical Polarization
Horizontal Polarization
SW
VIN
PGND
CBOOT
VCC
BIAS
SYNC
RT
ENABLE
SS/TRK
AGND
FB
LM43600
VIN
COUT
CBOOT
CIN
CVCC
VOUT
CBIAS
RFBT
RFBB
CFF
L
PGOOD
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
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Community
LM43600
SNVSA43A – AUGUST 2014 – REVISED AUGUST 2014
LM43600 SIMPLE SWITCHER® 3.5 V to 36 V 0.5 A Synchronous Step-Down Voltage
Converter
1 Features
3 Description
The LM43600 SIMPLE SWITCHER® regulator is an
1
33 µA Quiescent Current in Regulation
easy
to
use
synchronous
step-down
DC-DC
High Efficiency at Light Load (DCM and PFM)
converter capable of driving up to 0.5 A of load
Meets EN55022/CISPR 22 EMI standards
current from an input voltage ranging from 3.5 V to 36
V
(42
V
transient).
The
LM43600
provides
Integrated Synchronous Rectification
exceptional efficiency, output accuracy and drop-out
Adjustable Frequency Range: 200 kHz to 2.2 MHz
voltage in a very small solution size. An extended
(500 kHz default)
family is available in 1 A, 2 A and 3 A load current
Frequency Synchronization to External Clock
options in pin-to-pin compatible packages. Peak
current mode control is employed to achieve simple
Internal Compensation
control loop compensation and cycle-by-cycle current
Stable with Almost Any Combination of Ceramic,
limiting. Optional features such as programmable
Polymer, Tantalum, and Aluminum Capacitors
switching frequency, synchronization, power-good
Power-Good Flag
flag, precision enable, internal soft-start, extendable
soft-start, and tracking provide a flexible and easy to
Soft-Start into Pre-Biased Load
use platform for a wide range of applications.
Internal Soft-Start: 4.1 ms
Discontinuous conduction and automatic frequency
Extendable Soft-Start Time by External Capacitor
modulation at light loads improve light load efficiency.
Output Voltage Tracking Capability
The family requires few external components and pin
arrangement allows simple, optimum PCB layout.
Precision Enable to Program System UVLO
Protection features include thermal shutdown, VCC
Output Short Circuit Protection with Hiccup Mode
under-voltage lockout, cycle-by-cycle current limit,
Over Temperature Thermal Shutdown Protection
and output short circuit protection. The LM43601
device is available in the HTSSOP / PWP 16 leaded
2 Applications
package (5.1 mm x 6.6 mm x 1.2 mm) with 0.65 mm
lead pitch. Pin to pin compatible with LM46000,
Industrial Power Supplies
LM46001, LM46002, LM43601, LM43602, LM43603.
Telecommunications Systems
Device Information(1)
Sub-AM Band Automotive
PART NUMBER
PACKAGE
BODY SIZE (NOM)
General Purpose Wide VIN Regulation
LM43600
HTSSOP (16)
5.10 mm x 6.60 mm
High Efficiency Point-Of-Load Regulation
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
Radiated Emission Graph
with VIN = 12 V, VOUT = 3.3 V, FS= 500 kHz, IOUT =
0.5 A
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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