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MAX774CSA

Description
Switching Controllers 5/12/15/AdjV- Inv DC/DC Controller
CategoryPower/power management    The power supply circuit   
File Size310KB,16 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX774CSA Overview

Switching Controllers 5/12/15/AdjV- Inv DC/DC Controller

MAX774CSA Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Reach Compliance Codenot_compliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE FREQUENCY MODULATION
Maximum input voltage16.5 V
Minimum input voltage3 V
Nominal input voltage5 V
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length4.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current1 A
Nominal output voltage-5 V
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)245
Certification statusNot Qualified
Maximum seat height1.75 mm
Maximum supply current (Isup)0.1 mA
surface mountYES
Switch configurationBUCK-BOOST
Maximum switching frequency300 kHz
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3.9 mm
19-0191; Rev 2; 12/02
TION KIT
EVALUA
LE
AVAILAB
-5V/-12V/-15V or Adjustable, High-Efficiency,
Low I
Q
Inverting DC-to-DC Controllers
General Description
Features
o
85% Efficiency for 5mA to 1A Load Currents
o
Up to 5W Output Power
o
100µA (max) Supply Current
o
5µA (max) Shutdown Current
o
3V to 16.5V Input Range
o
-5V (MAX774), -12V (MAX775), -15V (MAX776),
or Adjustable Output Voltage
o
Current-Limited PFM Control Scheme
o
300kHz Switching Frequency
MAX774/MAX775/MAX776
The MAX774/MAX775/MAX776 inverting switching
regulators deliver high efficiency over three decades of
load current. A unique current-limited, pulse-
frequency modulated (PFM) control scheme provides
the benefits of pulse-width modulation (high efficiency
with heavy loads), while using less than 100µA of supply
current (vs. 2mA to 10mA for PWM converters). The result
is high efficiency over a wide range of loads.
These ICs also use tiny external components; their high
switching frequency (up to 300kHz) allows for less than
5mm diameter surface-mount magnetics.
The MAX774/MAX775/MAX776 accept input voltages from
3V to 16.5V, and have preset output voltages of
-5V, -12V, and -15V, respectively. Or, the output voltage
can be user-adjusted with two resistors. Maximum
V
IN
- V
OUT
differential voltage is limited only by the break-
down voltage of the chosen external switch transistor.
These inverters use external P-channel MOSFET switches,
allowing them to power loads up to 5W. If less power is
required, use the MAX764/MAX765/MAX766 inverting
switching regulators with on-board MOSFETs.
Ordering Information
PART
MAX774CPA
MAX774CSA
MAX774C/D
MAX774EPA
MAX774ESA
MAX774MJA
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
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP
Applications
LCD-Bias Generators
High-Efficiency DC-to-DC Converters
Battery-Powered Applications
Data Communicators
*Contact
factory for dice specifications.
Ordering Information continued on last page.
Typical Operating Circuit
INPUT
3V TO 16V
V+
Pin Configuration
TOP VIEW
MAX774
ON/OFF
SHDN
CS
EXT
P
OUTPUT
-5V
OUT
FB
SHDN
REF
1
2
3
4
8
GND
EXT
CS
V+
FB
REF
GND
OUT
MAX774
MAX775
MAX776
7
6
5
DIP/SO
________________________________________________________________
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.
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