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MAX1846-MAX1847

Description
SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
Categorysemiconductor    Analog mixed-signal IC   
File Size369KB,20 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Parametric Compare View All

MAX1846-MAX1847 Overview

SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16

MAX1846-MAX1847 Parametric

Parameter NameAttribute value
Rated input voltage12 V
Number of functions1
Number of terminals16
Minimum operating temperature-40 Cel
Maximum operating temperature85 Cel
Rated output voltage4.25 V
Processing package descriptionQSOP-16
each_compliYes
stateActive
Analog IC other typesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Minimum input voltage3 V
Maximum input voltage16.5 V
jesd_30_codeR-PDSO-G16
jesd_609_codee0
moisture_sensitivity_level1
Packaging MaterialsPLASTIC/EPOXY
ckage_codeSSOP
ckage_equivalence_codeSSOP16,.25
packaging shapeRECTANGULAR
Package SizeSMALL OUTLINE, SHRINK PITCH
eak_reflow_temperature__cel_240
qualification_statusCOMMERCIAL
seated_height_max1.75 mm
sub_categorySwitching Regulator or Controllers
surface mountYES
Switch configurationSINGLE
Maximum switching frequency500 kHz
CraftsmanshipBICMOS
Temperature levelINDUSTRIAL
terminal coatingTIN LEAD
Terminal formGULL WING
Terminal spacing0.6350 mm
Terminal locationDUAL
ime_peak_reflow_temperature_max__s_20
length4.89 mm
width3.9 mm
19-2091; Rev 0; 8/01
High-Efficiency, Current-Mode,
Inverting PWM Controller
General Description
MAX1846/MAX1847 high-efficiency PWM inverting con-
trollers allow designers to implement compact, low-
noise, negative-output DC-DC converters for telecom
and networking applications. Both devices operate
from +3V to +16.5V input and generate -2V to -200V
output. To minimize switching noise, both devices fea-
ture a current-mode, constant-frequency PWM control
scheme. The operating frequency can be set from
100kHz to 500kHz through a resistor.
The MAX1846 is available in an ultra-compact 10-pin
µMAX package. Operation at high frequency, compati-
bility with ceramic capacitors, and inverting topology
without transformers allow for a compact design.
Compatibility with electrolytic capacitors and flexibility
to operate down to 100kHz allow users to minimize the
cost of external components. The high-current output
drivers are designed to drive a P-channel MOSFET and
allow the converter to deliver up to 30W.
The MAX1847 features clock synchronization and shut-
down functions. The MAX1847 can also be configured
to operate as an inverting flyback controller with an N-
channel MOSFET and a transformer to deliver up to
70W. The MAX1847 is available in a 16-pin QSOP
package.
Current-mode control simplifies compensation and pro-
vides good transient response. Accurate current-mode
control and over current protection are achieved
through low-side current sensing.
o
90% Efficiency
o
+3.0V to +16.5V Input Range
o
-2V to -200V Output
o
Drives High-Side P-Channel MOSFET
o
100kHz to 500kHz Switching Frequency
o
Current-Mode, PWM Control
o
Internal Soft-Start
o
Electrolytic or Ceramic Output Capacitor
o
The MAX1847 also offers:
Synchronization to External Clock
Shutdown
N-Channel Inverting Flyback Option
Features
MAX1846/MAX1847
Ordering Information
PART
MAX1846EUB
MAX1847EEE
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
10 µMAX
16 QSOP
Typical Operating Circuit
POSITIVE
V
IN
Applications
Cellular Base Stations
Networking Equipment
Optical Networking Equipment
SLIC Supplies
CO DSL Line Driver Supplies
Industrial Power Supplies
Automotive Electronic Power Supplies
Servers
FREQ
PGND
VL
IN
EXT
P
NEGATIVE
V
OUT
MAX1846
MAX1847
COMP
CS
REF
GND
FB
Pin Configurations appear at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

MAX1846-MAX1847 Related Products

MAX1846-MAX1847 MAX1847 MAX1846
Description SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16 SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
Rated input voltage 12 V 12 V 12 V
Number of functions 1 1 1
Number of terminals 16 16 16
Minimum operating temperature -40 Cel -40 Cel -40 Cel
Maximum operating temperature 85 Cel 85 Cel 85 Cel
Rated output voltage 4.25 V 4.25 V 4.25 V
Processing package description QSOP-16 QSOP-16 QSOP-16
each_compli Yes Yes Yes
state Active Active Active
Analog IC other types SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Minimum input voltage 3 V 3 V 3 V
Maximum input voltage 16.5 V 16.5 V 16.5 V
jesd_30_code R-PDSO-G16 R-PDSO-G16 R-PDSO-G16
jesd_609_code e0 e0 e0
moisture_sensitivity_level 1 1 1
Packaging Materials PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
ckage_code SSOP SSOP SSOP
ckage_equivalence_code SSOP16,.25 SSOP16,.25 SSOP16,.25
packaging shape RECTANGULAR RECTANGULAR RECTANGULAR
Package Size SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH
eak_reflow_temperature__cel_ 240 240 240
qualification_status COMMERCIAL COMMERCIAL COMMERCIAL
seated_height_max 1.75 mm 1.75 mm 1.75 mm
sub_category Switching Regulator or Controllers Switching Regulator or Controllers Switching Regulator or Controllers
surface mount YES YES YES
Switch configuration SINGLE SINGLE SINGLE
Maximum switching frequency 500 kHz 500 kHz 500 kHz
Craftsmanship BICMOS BICMOS BICMOS
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL
terminal coating TIN LEAD TIN LEAD TIN LEAD
Terminal form GULL WING GULL WING GULL WING
Terminal spacing 0.6350 mm 0.6350 mm 0.6350 mm
Terminal location DUAL DUAL DUAL
ime_peak_reflow_temperature_max__s_ 20 20 20
length 4.89 mm 4.89 mm 4.89 mm
width 3.9 mm 3.9 mm 3.9 mm
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