MAX5019ESA+ Maxim Integrated Products, MAX5019ESA+ Datasheet

IC CNTRLR PWM CRNT MD 8-SOIC

MAX5019ESA+

Manufacturer Part Number
MAX5019ESA+
Description
IC CNTRLR PWM CRNT MD 8-SOIC
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5020ESA.pdf (14 pages)

Specifications of MAX5019ESA+

Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
302kHz
Duty Cycle
85%
Voltage - Supply
13 V ~ 110 V
Buck
No
Boost
No
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Frequency-max
302kHz
Duty Cycle (max)
85 %
Output Current
1000 mA
Mounting Style
SMD/SMT
Switching Frequency
275 KHz
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Synchronous Pin
No
Topology
Flyback, Forward
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX5019/MAX5020 integrate all the building
blocks necessary for implementing DC-DC fixed-fre-
quency power supplies. Either primary- or secondary-
side regulation may be used to implement isolated or
nonisolated power supplies. These devices are current-
mode controllers with an integrated high-voltage start-
up circuit suitable for telecom/industrial voltage range
power supplies. Current-mode control with leading-
edge blanking simplifies control-loop design and inter-
nal ramp compensation circuitry stabilizes the current
loop when operating at duty cycles above 50%
(MAX5019). The MAX5019 allows 85% operating duty
cycle and can be used to implement flyback converters
whereas the MAX5020 limits the operating duty cycle to
less than 50% and can be used in single-ended for-
ward converters. A high-voltage startup circuit allows
these devices to draw power directly from the 18V to
110V input supply during startup. The switching fre-
quency is internally trimmed to 275kHz ±10%, thus
reducing magnetics and filter component costs.
The MAX5019/MAX5020 are available in 8-pin SO
packages.
Warning: The MAX5019/MAX5020 operate with high
voltages. Exercise caution.
19-2115; Rev 0; 7/01
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.
Current-Mode PWM Controllers with Integrated
TOP VIEW
Telecom Power Supplies
Industrial Power Supplies
Networking Power Supplies
Isolated Power Supplies
SS_SHDN
V
V+
DD
FB
________________________________________________________________ Maxim Integrated Products
1
2
4
3
General Description
MAX5019/
MAX5020
8-SO
Pin Configuration
Applications
6
8
7
5
V
NDRV
GND
CS
CC
o Wide Input Range: (18V to 110V) or (13V to 36V)
o Isolated (without optocoupler) or Nonisolated
o Current-Mode Control
o Leading-Edge Blanking
o Internally Trimmed 275kHz ±10% Oscillator
o Low External Component Count
o Soft-Start
o High-Voltage Startup Circuit
o Pulse-by-Pulse Current Limiting
o Thermal Shutdown
o SO-8 Package
*See Selector Guide at end of data sheet.
MAX5019CSA*
MAX5019ESA*
MAX5020CSA*
MAX5020ESA*
V
Power Supply
IN
PART
V
V
SS_SHDN
DD
CC
MAX5020
Typical Operating Circuit
Startup Circuit
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
Ordering Information
0°C to +70°C
0°C to +70°C
NDRV
GND
CS
FB
V+
PIN-PACKAGE
Features
8-SO
8-SO
8-SO
8-SO
V
OUT
1

Related parts for MAX5019ESA+

Image
Part Number
Description
Manufacturer
Datasheet
Request R
MAX501-MAX502
Part Number:
MAX501-MAX502
Description:
Voltage-Output, 12-Bit Multiplying DACs
Manufacturer:
MAXIM [Maxim Integrated Products]
Datasheet:
MAX501-MAX502.pdf (12 pages)
MAX501
Part Number:
MAX501
Description:
Voltage-Output, 12-Bit Multiplying DACs
Manufacturer:
Maxim Integrated Products
Datasheet:
MAX501.pdf (12 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

MAX5019ESA+ Summary of contents

Page 1

... MAX5019/ MAX5020 FB 3 SS_SHDN 4 8-SO ________________________________________________________________ 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. o Wide Input Range: (18V to 110V) or (13V to 36V) o Isolated (without optocoupler) or Nonisolated Power Supply o Current-Mode Control o Leading-Edge Blanking o Internally Trimmed 275kHz ± ...

Page 2

Current-Mode PWM Controllers with Integrated Startup Circuit ABSOLUTE MAXIMUM RATINGS V+ to GND ……………………………………...……-0.3V to +120V V to GND.………………………………….……….-0.3V to +40V GND.………………….……………………-0.3V to +12.5V CC FB, NDRV, SS_SHDN GND .……-0. and V ...

Page 3

Current-Mode PWM Controllers with Integrated ELECTRICAL CHARACTERISTICS (continued 13V, a 10µF capacitor connects open circuit 3V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL ...

Page 4

Current-Mode PWM Controllers with Integrated Startup Circuit (V+ = 48V 13V GND, NRDV is open circuit MAX5020 MAXIMUM DUTY CYCLE vs. TEMPERATURE 48.0 47 GND 47.6 47.4 47.2 47.0 46.8 -40 -20 ...

Page 5

Current-Mode PWM Controllers with Integrated (V+ = 48V 13V GND, NRDV is open circuit NDRV FREQUENCY vs 271.0 270.5 270.0 269.5 269.0 268 GND 268.0 267.5 267 ...

Page 6

Current-Mode PWM Controllers with Integrated Startup Circuit PIN NAME High-Voltage Startup Input. Connect directly to an input voltage between 18V to 110V. Connects 1 V+ internally to a high-voltage linear regulator that generates the Input of the ...

Page 7

Current-Mode PWM Controllers with Integrated HIGH- VOLTAGE GND REGULATOR EN MAX5019 ONLY SLOPE COMPENSATION 26mV/µs 26mV/µs 1MΩ 50kΩ FB ERROR AMP SS_SHDN 2.4V 0.25V Figure 1. Functional Diagram _______________________________________________________________________________________ IN BIAS WINDING REGULATOR EN OUT OUT ...

Page 8

Current-Mode PWM Controllers with Integrated Startup Circuit V IN (36V TO 72V 4.7µ 10µ 0.1µF Figure 2. Forward Converter vantage to this is that the MOSFET voltage rating must be higher and that slope ...

Page 9

Current-Mode PWM Controllers with Integrated V IN Figure 3. Nonisolated Flyback Converter Figure 4. Isolated Flyback Converter to 2.4V, the internal voltage reference. Pull V below 0.25V to disable the controller. Undervoltage lockout shuts ...

Page 10

Current-Mode PWM Controllers with Integrated Startup Circuit pass filter (Figures 2, 3). Select the current-sense resis- tor, R according to the following equation: SENSE = 0 465 SENSE LimPrimary where I is the maximum peak ...

Page 11

Current-Mode PWM Controllers with Integrated 1) 36V ≤ V ≤ 72V 5V OUT OUT 50mV 2) To set the output voltage calculate the values of resistors R1 and R2 according to the following equation:   ...

Page 12

Current-Mode PWM Controllers with Integrated Startup Circuit  14 ≥ ×  DSMAX  14 Choose MOSFETs with appropriate avalanche power ratings. 5) Choose the tertiary winding turns ratio (N that the minimum input ...

Page 13

Current-Mode PWM Controllers with Integrated Table 1. Component Manufacturers Power FETS Current-Sense Resistors Diodes Capacitors Magnetics Selector Guide MAXIMUM PART DUTY CYCLE MAX5019CSA 85% MAX5019ESA 85% MAX5020CSA 50% MAX5020ESA 50% ______________________________________________________________________________________ International Rectifier Fairchild Vishay-Siliconix Dale-Vishay IRC On Semi General ...

Page 14

... 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. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

Related keywords