MAX5033CUSA+ Maxim Integrated Products, MAX5033CUSA+ Datasheet

IC DC-DC CONV HI EFF 8-SOIC

MAX5033CUSA+

Manufacturer Part Number
MAX5033CUSA+
Description
IC DC-DC CONV HI EFF 8-SOIC
Manufacturer
Maxim Integrated Products
Type
Step-Down (Buck)r
Datasheet
1.MAX5033AUSA.pdf (17 pages)

Specifications of MAX5033CUSA+

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
12V
Current - Output
500mA
Frequency - Switching
125kHz
Voltage - Input
7.5 ~ 76 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Power - Output
471mW
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX5033 easy-to-use, high-efficiency, high-voltage,
step-down DC-DC converter operates from an input volt-
age up to 76V and consumes only 270µA quiescent cur-
rent at no load. This pulse-width modulated (PWM)
converter operates at a fixed 125kHz switching frequen-
cy at heavy loads, and automatically switches to pulse-
skipping mode to provide low quiescent current and
high efficiency at light loads. The MAX5033 includes
internal frequency compensation simplifying circuit
implementation. The device uses an internal low-on-
resistance, high-voltage, DMOS transistor to obtain high
efficiency and reduce overall system cost. This device
includes undervoltage lockout, cycle-by-cycle current
limit, hiccup-mode output short-circuit protection, and
thermal shutdown.
The MAX5033 delivers up to 500mA output current.
The output current may be limited by the maximum
power dissipation capability of the package. External
shutdown is included, featuring 10µA (typ) shutdown
current. The MAX5033A/B/C versions have fixed output
voltages of 3.3V, 5V, and 12V, respectively, while the
MAX5033D features an adjustable output voltage, from
1.25V to 13.2V.
The MAX5033 is available in space-saving 8-pin SO
and 8-pin plastic DIP packages and operates over the
automotive (-40°C to +125°C) temperature range.
19-2979; Rev 4; 4/10
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.
7.5V TO 76V
OFF
V
47µF
Automotive
Consumer Electronics
Industrial
Distributed Power
IN
ON
R1
R2
Typical Operating Circuit
ON/OFF
________________________________________________________________ Maxim Integrated Products
V
SGND
IN
500mA, 76V, High-Efficiency, MAXPower
MAX5033
General Description
GND
BST
VD
LX
FB
0.1µF
0.1µF
D1
50SQ100
Applications
220µH
Step-Down DC-DC Converter
33µF
V
5V, 0.5A
OUT
o Wide 7.5V to 76V Input Voltage Range
o Fixed (3.3V, 5V, 12V) and Adjustable (1.25V to
o 500mA Output Current
o Efficiency Up to 94%
o Internal 0.4Ω High-Side DMOS FET
o 270µA Quiescent Current at No Load, 10µA
o Internal Frequency Compensation
o Fixed 125kHz Switching Frequency
o Thermal Shutdown and Short-Circuit Current Limit
o 8-Pin SO and PDIP Packages
This product is available in both leaded(Pb) and lead(Pb)-free
packages. To order the lead(Pb)-free package, add a + after
the part number.
MAX5033AUSA
MAX5033AUPA
MAX5033AASA
MAX5033BUSA
MAX5033BUPA
MAX5033BASA
MAX5033CUSA
MAX5033CUPA
MAX5033CASA
MAX5033DUSA
MAX5033DUPA
MAX5033DASA
13.2V) Voltage Versions
Shutdown Current
PART
SGND
BST
VD
FB
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
TEMP RANGE
0°C to +85°C
0°C to +85°C
0°C to +85°C
0°C to +85°C
0°C to +85°C
0°C to +85°C
0°C to +85°C
0°C to +85°C
1
2
3
4
Ordering Information
MAX5033
SO/PDIP
Pin Configuration
PIN-
PACKAGE
8 SO
8 PDIP
8 SO
8 SO
8 PDIP
8 SO
8 SO
8 PDIP
8 SO
8 SO
8 PDIP
8 SO
8
7
6
5
LX
V
GND
ON/OFF
IN
Features
VOLTAGE
OUTPUT
ADJ
3.3
5.0
(V)
12
1

Related parts for MAX5033CUSA+

Image
Part Number
Description
Manufacturer
Datasheet
Request R
MAX5033
Part Number:
MAX5033
Description:
500mA, 76V, High-Efficiency, MAXPower Step-Down DC-DC Converter
Manufacturer:
MAXIM [Maxim Integrated Products]
Datasheet:
MAX5033.pdf (17 pages)
max5033ausat
Part Number:
max5033ausat
Description:
Max5033 500ma, 76v, High-efficiency, Maxpower Step-down Dc-dc Converter
Manufacturer:
Maxim Integrated Products, Inc.
Datasheet:
MAX5033AUSAT.pdf (17 pages)
MAX7528KCWP
Part Number:
MAX7528KCWP
Description:
MAX7528KCWPMaxim Integrated Products [CMOS Dual 8-Bit Buffered Multiplying DACs]
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX7528KCWP.pdf (12 pages)
MAX3261CCJ
Part Number:
MAX3261CCJ
Description:
Single +5V, fully integrated, 1.25Gbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3261CCJ.pdf (12 pages)
MAX3263CAG
Part Number:
MAX3263CAG
Description:
Single +5V, fully integrated, 155Mbps laser diode driver.
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX3263CAG.pdf (12 pages)
MAX8809AETL+
Part Number:
MAX8809AETL+
Description:
VRD11/VRD10, K8 Rev F 2/3/4-Phase PWM Controllers with Integrated Dual MOSFET Drivers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX8809AETL.pdf (50 pages)
MAX1535CETJ+T
Part Number:
MAX1535CETJ+T
Description:
Highly Integrated Level 2 SMBus Battery Chargers
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX1535CETJT.pdf (39 pages)
DS2741N+
Part Number:
DS2741N+
Description:
Current Monitor and Accumulator with Integrated Sense Resistor; ; Temperature Range: -40°C to +85°C
Manufacturer:
Maxim Integrated Products
MAX13450EAUD+T
Part Number:
MAX13450EAUD+T
Description:
TSSOP 14/A/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX13451EAUD+T
Part Number:
MAX13451EAUD+T
Description:
TSSOP 14/A/RS-485 Transceivers with Integrated 100O/120O Termination Resis
Manufacturer:
Maxim Integrated Products
MAX17497BATE+
Part Number:
MAX17497BATE+
Description:
QFN 16/A/AC-DC and DC-DC Peak-Current-Mode Converters with Integrated Step
Manufacturer:
Maxim Integrated Products
MAX17502FATB+T
Part Number:
MAX17502FATB+T
Description:
TDFN/A/65V, 1A, 600KHZ, SYNCHRONOUS STEP-DOWN REGULATOR WITH INTEGRATED SWI
Manufacturer:
Maxim Integrated Products
MAX1978EVKIT
Part Number:
MAX1978EVKIT
Description:
Integrated Temperature Controller f
Manufacturer:
Maxim Integrated Products
MAX2606EUT+
Part Number:
MAX2606EUT+
Description:
SOT23-6/I/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products
MAX2608EUT+
Part Number:
MAX2608EUT+
Description:
SOT23-6/I/45MHz to 650MHz, Integrated IF VCOs with Differential Output
Manufacturer:
Maxim Integrated Products

MAX5033CUSA+ Summary of contents

Page 1

... R2 VD OFF SGND GND 0.1µF ________________________________________________________________ Maxim Integrated Products 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. Step-Down DC-DC Converter o Wide 7.5V to 76V Input Voltage Range o Fixed (3.3V, 5V, 12V) and Adjustable (1.25V to 13 ...

Page 2

High-Efficiency, MAXPower Step-Down DC-DC Converter ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND, unless otherwise specified.) V .........................................................................-0.3V to +80V IN SGND ....................................................................-0.3V to +0.3V LX.................................................................-0. BST ...............................................................-0. BST (transient < 100ns) ................................-0. ...

Page 3

High-Efficiency, MAXPower ELECTRICAL CHARACTERISTICS (MAX5033_U_ _) (continued +12V +12V ON/OFF OUT Typical Operating Circuit .) PARAMETER SYMBOL Switch On-Resistance R PFM Threshold FB Input Bias Current ON/OFF CONTROL INPUT ...

Page 4

High-Efficiency, MAXPower Step-Down DC-DC Converter ELECTRICAL CHARACTERISTICS (MAX5033_A_ _) (continued +12V +12V OFF IN ON OUT the Typical Operating Circuit .) (Note 2) PARAMETER SYMBOL Feedback Voltage Efficiency Quiescent ...

Page 5

High-Efficiency, MAXPower (V = 12V 12V -40°C to +125°C, unless otherwise noted. Typical values are ON/OFF A Operating Circuit , if applicable.) V vs. TEMPERATURE OUT (MAX5033CASA 12V) OUT ...

Page 6

High-Efficiency, MAXPower Step-Down DC-DC Converter (V = 12V 12V -40°C to +125°C, unless otherwise noted. Typical values are ON/OFF A Operating Circuit , if applicable.) OUTPUT CURRENT LIMIT vs. INPUT VOLTAGE ...

Page 7

High-Efficiency, MAXPower (V = 12V 12V -40°C to +125°C, unless otherwise noted. Typical values are ON/OFF A Operating Circuit , if applicable.) MAX5033BASA LX WAVEFORMS MAX5033 toc19 4µs/div ...

Page 8

High-Efficiency, MAXPower Step-Down DC-DC Converter PIN NAME 1 BST Boost Capacitor Connection. Connect a 0.1µF ceramic capacitor from BST to LX Internal Regulator Output. Bypass VD to GND with a 0.1µF ceramic capacitor. 3 SGND Internal ...

Page 9

High-Efficiency, MAXPower Detailed Description The MAX5033 step-down DC-DC converter operates from a 7.5V to 76V input voltage range. A unique volt- age-mode control scheme with voltage feed-forward and an internal switching DMOS FET provides high effi- ciency over ...

Page 10

High-Efficiency, MAXPower Step-Down DC-DC Converter The MAX5033 features internal compensation for opti- mum closed-loop bandwidth and phase margin. With the preset compensation strongly advised to sense the output immediately after the primary LC. Inductor Selection The ...

Page 11

High-Efficiency, MAXPower Ensure that the ripple specification of the input capaci- tor exceeds the worst-case capacitor RMS ripple cur- rent. Use the following equations to calculate the input capacitor RMS current − CRMS ...

Page 12

High-Efficiency, MAXPower Step-Down DC-DC Converter Figure 2. Fixed Output Voltages Table 2. Typical External Components Selection (Circuit of Figure 2) V ( OUT OUT 7 3.3 0.5 7.5 ...

Page 13

High-Efficiency, MAXPower Table 2. Typical External Components Selection (Circuit of Figure 2) (continued) V ( OUT OUT 3.3 0 0.5 3.3 0 0.5 12 0.5 ______________________________________________________________________________________ ...

Page 14

High-Efficiency, MAXPower Step-Down DC-DC Converter Table 3. Component Suppliers SUPPLIER AVX Coilcraft Diodes Incorporated Nichicon Panasonic SANYO TDK Vishay V IN 12V C IN 47µF *LOCATE PTC AS CLOSE TO HEAT-DISSIPATING COMPONENTS AS POSSIBLE. Figure 3. Load Temperature ...

Page 15

High-Efficiency, MAXPower V IN 7.5V TO 36V C 47µF C' 68µF Figure 4. Dual-Sequenced DC-DC Converters (Startup Delay Determined by R1/R1’, Ct/Ct’ and Rt/Rt’) ______________________________________________________________________________________ Step-Down DC-DC Converter MAX5033B FB R1 BST ON/OFF ...

Page 16

High-Efficiency, MAXPower Step-Down DC-DC Converter For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different ...

Page 17

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2010 Maxim Integrated Products ...

Related keywords