NCP1294EDBR2G ON Semiconductor, NCP1294EDBR2G Datasheet

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NCP1294EDBR2G

Manufacturer Part Number
NCP1294EDBR2G
Description
IC PWM CTLR FLYBACK 16TSSOP
Manufacturer
ON Semiconductor
Datasheet

Specifications of NCP1294EDBR2G

Output Isolation
Isolated
Frequency Range
260 ~ 320kHz
Voltage - Input
4.7 ~ 15 V
Operating Temperature
-40°C ~ 125°C
Package / Case
16-TSSOP
Duty Cycle (max)
90 %
Output Current
1 A
Mounting Style
SMD/SMT
Operating Supply Voltage
3.05 V
Supply Current
9.5 mA
Fall Time
25 ns
Rise Time
60 ns
Synchronous Pin
Yes
Topology
Boost, Flyback, Forward
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
NCP1294EDBR2G
Manufacturer:
ON Semiconductor
Quantity:
500
Part Number:
NCP1294EDBR2G
Manufacturer:
ON/安森美
Quantity:
20 000
NCP1294
Flyback, Boost, Forward
PWM Controller
controller contains all of the features necessary to be configured in a
Flyback, Boost or Forward topology. This PWM controller has been
optimized for high frequency primary side control operation. In
addition, this device includes such features as: Soft−Start, accurate
duty cycle limit control, less than 50mA startup current, over and
undervoltage protection, and bidirectional synchronization. The
NCP1294 is available in a 16 lead SOIC narrow surface mount
package.
Features
*For additional information on our Pb−Free strategy and soldering details, please
© Semiconductor Components Industries, LLC, 2009
July, 2009 − Rev. 0
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
The NCP1294 fixed frequency feed forward voltage mode PWM
Compliant
1.0 MHz Frequency Capability
Fixed Frequency Voltage Mode Operation, with Feed Forward
Thermal Shutdown
Undervoltage Lock−Out
Accurate Programmable Max Duty Cycle Limit
1.0 A Sink/Source Gate Drive
Programmable Pulse−By−Pulse Overcurrent Protection
Leading Edge Current Sense Blanking
75 ns Shutdown Propagation Delay
Programmable Soft−Start
Undervoltage Protection
Overvoltage Protection with Programmable Hysteresis
Bidirectional Synchronization
25 ns GATE Rise and Fall Time (1.0 nF Load)
3.3 V 3% Reference Voltage Output
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
1
NCP1294EDR2G
NCP1294EDBR2G TSSOP−16
†For information on tape and reel specifications,
16
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
16
Device
1
ORDERING INFORMATION
NCP1294= Specific Device Code
A
WL, L
YY, Y
WW, W = Work Week
G or G
PIN CONNECTIONS AND
I
SYNC
SENSE
GATE
R
MARKING DIAGRAM
1
I
T
SET
OV
http://onsemi.com
UV
FF
C
T
16
1
= Assembly Location
= Wafer Lot
= Year
= Pb−Free Package
1
(Pb−Free)
(Pb−Free)
Package
SOIC−16
ALYW
1294
NCP
G
Publication Order Number:
CASE 751B
D SUFFIX
DB SUFFIX
CASE 948F
SOIC−16
TSSOP−16
16
V
PGND
V
V
LGND
SS
COMP
V
2500 Tape & Reel
2500 Tape & Reel
C
CC
REF
FB
Shipping
NCP1294/D

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NCP1294EDBR2G Summary of contents

Page 1

... WW Work Week Pb−Free Package ORDERING INFORMATION Device Package NCP1294EDR2G SOIC−16 (Pb−Free) NCP1294EDBR2G TSSOP−16 (Pb−Free) †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. 1 SOIC−16 D SUFFIX CASE 751B TSSOP− ...

Page 2

NCP1294 Figure 1. Application Diagram, 36 V− 5.0 V/5.0 A Converter http://onsemi.com 2 ...

Page 3

MAXIMUM RATINGS Operating Junction Temperature Lead Temperature Soldering: Storage Temperature Range ESD (Human Body Model) Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions ...

Page 4

ELECTRICAL CHARACTERISTICS (−40°C < 390 pF; unless otherwise specified Characteristic Reference Voltage Total Accuracy Line Regulation Load Regulation Noise Voltage Op Life Shift Fault Voltage V Voltage REF(OK) V Hysteresis REF(OK) ...

Page 5

ELECTRICAL CHARACTERISTICS (−40°C < 390 pF; unless otherwise specified Characteristic Gate Driver High Saturation Voltage Low Saturation Voltage High Voltage Clamp Output Current Output UVL Leakage Rise Time Fall Time Max ...

Page 6

PACKAGE PIN DESCRIPTION Package Pin Pin # Symbol 1 GATE External power switch driver with 1.0 A peak capability. Rail to rail output occurs when the capacitive load is between 470 pF and 10 nF Current sense comparator ...

Page 7

UVL − ENABLE + − UV Lockout Start/Stop SYNC 2 1.0 V Trip Points V 3 (1.263 V) − EAMP − COMP Soft−Start Clamp FF ...

Page 8

THEORY OF OPERATION Feed Forward Voltage Mode Control In conventional voltage mode control, the ramp signal has fixed rising and falling slope. The feedback signal is derived solely from the output voltage. Consequently, voltage mode control has inferior line regulation ...

Page 9

Soft−Start can be programmed through a capacitance connected to the SS pin. The constant charging current to the SS pin (typ). The V (ok) comparator monitors the 3 REF output and latches a ...

Page 10

Figure 8. The SYNC Pin Generates a Sync Pulse at the Beginning of Each Switching Cycle. CH2: GATE Pin, CH3 CH4: SYNC Pin T T Figure 9. Operation with External Sync. CH2: SYNC Pin, CH3: GATE Pin, ...

Page 11

500 400 300 200 100 0.0001 0.001 C (mF) T Figure 10. Typical Performance Characteristics, Oscillator Frequency vs. C that during ...

Page 12

G K −T− SEATING PLANE 0.25 (0.010 PACKAGE THERMAL DATA Parameter R qJC R qJA PACKAGE DIMENSIONS SOIC−16 D SUFFIX CASE 751B−05 ISSUE K −B− 0.25 ...

Page 13

... Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303− ...

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