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MAX747ESD-

Description
Switching Controllers Integrated Circuits (ICs)
Categorysemiconductor    Power management   
File Size134KB,12 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX747ESD- Overview

Switching Controllers Integrated Circuits (ICs)

MAX747ESD- Parametric

Parameter NameAttribute value
Product CategorySwitching Controllers
ManufacturerMaxim
RoHSDetails
Number of Outputs1 Output
Input Voltage4 V to 15 V
Output Voltage5.08 V, 2 V to 14 V
Output Current2.5 A
Minimum Operating Temperature- 40 C
Maximum Operating Temperature+ 85 C
Mounting StyleSMD/SMT
Package / CaseSOIC-Narrow-14
Factory Pack Quantity50
TypePWM DC to DC Controller, Step Down
19-0171; Rev 1; 9/93
High-Efficiency PWM, Step-Down
P-Channel DC-DC Controller
_______________General Description
The MAX747 high-efficiency, high-current, step-down
controller drives external P-channel FETs. It provides
90% to 95% efficiency from a 6V supply with load
currents ranging from 50mA up to 2.5A. It uses a
pulse-width-modulating (PWM) current-mode control
scheme to provide precise output regulation and low
output noise. The MAX747’s 4V to 15V input voltage
range, a fixed 5V/adjustable (Dual-Mode™) output, and
a current limit set with an external resistor make this
device ideal for a wide range of applications.
High efficiency is maintained with light loads due to a
proprietary dual-control (Idle-Mode™) scheme that
minimizes switching losses by reducing the switching
frequency at light loads. The low 800µA quiescent
current and ultra-low 0.6µA shutdown current further
extend battery life.
External components are protected by the MAX747’s
cycle-by-cycle current limit. The MAX747 also features a
2V ±1.5% reference, a comparator for low-battery
detection or level translating, as well as soft-start and
shutdown capability.
The MAX746, discussed in a separate data sheet,
functions similarly to the MAX747, but it drives N-channel
logic level FETs on the high side.
____________________________Features
o
90% to 95% Efficiency for 50mA to 2.5A
Output Currents
o
4V to 15V Input Voltage Range
o
Low 800µA Supply Current
o
0.6µA Shutdown Current
o
Drives External P-Channel FETs
o
Cycle-by-Cycle Current Limiting
o
2V ±1.5% Accurate Reference Output
o
Adjustable Soft-Start
o
Precision Comparator for Power-Fail or
Low-Battery Warning
MAX747
______________Ordering Information
PART
MAX747CPD
MAX747CSD
MAX747C/D
MAX747EPD
MAX747ESD
MAX747MJD
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
14 Plastic DIP
14 Narrow SO
Dice*
14 Plastic DIP
14 Narrow SO
14 CERIDIP
* Contact factory for dice specifications.
________________________Applications
Notebook Power Supplies
Personal Digital Assistants
Battery-Operated Equipment
Cellular Phones
5V to 3.3V Green PC Applications
__________Typical Operating Circuit
INPUT
6V TO 15V
V+
AV+
5OmΩ
100µF
MAX747
CS
EXT
P
5OµH
OUTPUT
5V
2.3A
__________________Pin Configuration
TOP VIEW
ON/OFF
SHDN
430µF
LBI
SS
REF
SHDN
FB
CC
1
2
3
4
5
6
14
LBO
13
GND
OUT
LOW-BATTERY
DETECTOR
INPUT
LBI
0.1µF
MAX747
12
V+
11
EXT
10
AGND
9
8
CS
OUT
REF
SS
LBO
CC FB AGND GND
LOW-BATTERY
DETECTOR
OUTPUT
AV+
7
DIP/SO
™ Dual-Mode and Idle-Mode are trademarks of Maxim Integrated Products.
________________________________________________________________
Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.

MAX747ESD- Related Products

MAX747ESD- MAX747EPD MAX747ESD MAX747CSD-T MAX747CSD
Description Switching Controllers Integrated Circuits (ICs) Switching Controllers Switching Controllers Switching Controllers Switching Controllers
Is it Rohs certified? - incompatible incompatible incompatible incompatible
Parts packaging code - DIP SOIC SOIC SOIC
package instruction - PLASTIC, DIP-14 SOP, SOP14,.25 SOP, SOP14,.25 SOP, SOP14,.25
Contacts - 14 14 14 14
Reach Compliance Code - not_compliant not_compliant not_compliant not_compliant
ECCN code - EAR99 EAR99 EAR99 EAR99
Other features - ALSO OPERATES IN ADJUSTABLE MODE FROM 2 TO 14V ALSO OPERATES IN ADJUSTABLE MODE FROM 2 TO 14V ALSO OPERATES IN ADJUSTABLE MODE FROM 2 TO 14V ALSO OPERATES IN ADJUSTABLE MODE FROM 2 TO 14V
Analog Integrated Circuits - Other Types - SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode - CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology - PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage - 15 V 15 V 15 V 15 V
Minimum input voltage - 4 V 4 V 4 V 4 V
Nominal input voltage - 10 V 10 V 10 V 10 V
JESD-30 code - R-PDIP-T14 R-PDSO-G14 R-PDSO-G14 R-PDSO-G14
JESD-609 code - e0 e0 e0 e0
length - 19.05 mm 8.65 mm 8.65 mm 8.65 mm
Number of functions - 1 1 1 1
Number of terminals - 14 14 14 14
Maximum operating temperature - 85 °C 85 °C 70 °C 70 °C
Maximum output current - 3 A 3 A 3 A 3 A
Nominal output voltage - 5.08 V 5.08 V 5.08 V 5.08 V
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - DIP SOP SOP SOP
Encapsulate equivalent code - DIP14,.3 SOP14,.25 SOP14,.25 SOP14,.25
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form - IN-LINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) - 245 245 245 245
Certification status - Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height - 4.572 mm 1.75 mm 1.75 mm 1.75 mm
Maximum supply current (Isup) - 1.3 mA 1.3 mA 1.3 mA 1.3 mA
surface mount - NO YES YES YES
Switch configuration - SINGLE SINGLE SINGLE SINGLE
Maximum switching frequency - 120 kHz 120 kHz 115 kHz 115 kHz
technology - CMOS CMOS CMOS CMOS
Temperature level - INDUSTRIAL INDUSTRIAL COMMERCIAL COMMERCIAL
Terminal surface - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form - THROUGH-HOLE GULL WING GULL WING GULL WING
Terminal pitch - 2.54 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location - DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature - NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width - 7.62 mm 3.9 mm 3.9 mm 3.9 mm
Humidity sensitivity level - - 1 1 1
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