NCV3843BVD1R2G ON Semiconductor, NCV3843BVD1R2G Datasheet

no-image

NCV3843BVD1R2G

Manufacturer Part Number
NCV3843BVD1R2G
Description
IC CTRLR CURRENT MODE HP 8-SOIC
Manufacturer
ON Semiconductor
Datasheet

Specifications of NCV3843BVD1R2G

Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
275kHz
Duty Cycle
96%
Voltage - Supply
8.2 V ~ 25 V
Buck
No
Boost
Yes
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
-40°C ~ 105°C
Package / Case
8-SOIC (3.9mm Width)
Frequency-max
275kHz
Duty Cycle (max)
96 %
Output Current
1000 mA
Mounting Style
SMD/SMT
Switching Frequency
500 KHz
Maximum Operating Temperature
+ 125 C
Fall Time
50 ns
Minimum Operating Temperature
- 40 C
Rise Time
50 ns
Synchronous Pin
No
Topology
Boost, Flyback
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NCV3843BVD1R2G
Quantity:
4 500
NCV3843BV
High Performance
Current Mode Controllers
mode controller. They are specifically designed for Off−Line and
DC−DC converter applications offering the designer a cost−effective
solution with minimal external components. These integrated circuits
feature a trimmed oscillator for precise duty cycle control, a
temperature compensated reference, high gain error amplifier, current
sensing comparator, and a high current totem pole output ideally
suited for driving a power MOSFET.
reference undervoltage lockouts each with hysteresis, cycle−by−cycle
current limiting, programmable output deadtime, and a latch for single
pulse metering.
package as well as the 14−pin plastic surface mount (SOIC−14). The
SOIC−14 package has separate power and ground pins for the totem
pole output stage.
UVLO thresholds of 8.5 V (on) and 7.6 V (off).
Features
Compensation
© Semiconductor Components Industries, LLC, 2010
August, 2010 − Rev. 1
The NCV3843BV is a high performance fixed frequency current
Also included are protective features consisting of input and
These devices are available in a surface mount (SOIC−8) plastic
The NCV3843BV is tailored for lower voltage applications having
Trimmed Oscillator for Precise Frequency Control
Oscillator Frequency Guaranteed at 250 kHz
Current Mode Operation to 500 kHz
Automatic Feed Forward Compensation
Latching PWM for Cycle−By−Cycle Current Limiting
Internally Trimmed Reference with Undervoltage Lockout
High Current Totem Pole Output
Undervoltage Lockout with Hysteresis
Low Startup and Operating Current
These are Pb−Free Devices
Feedback
Voltage
Output
Input
R
Pin numbers in parenthesis are for the D suffix SOIC−14 package.
T
V
8(14)
/C
4(7)
2(3)
1(1)
ref
T
Amplifier
+
-
Figure 1. Simplified Block Diagram
Error
R
R
Oscillator
GND
Undervoltage
Lockout
V
ref
5(9)
Reference
5.0V
Latching
PWM
V
Undervoltage
CC
Lockout
V
CC
7(12)
1
7(11)
6(10)
5(8)
3(5)
Output
V
C
Power
Ground
Current
Sense
Input
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
See general marking information in the device marking
section on page 15 of this data sheet.
DEVICE MARKING INFORMATION
Voltage Feedback
Voltage Feedback
Compensation
Current Sense
Compensation
Current Sense
ORDERING INFORMATION
14
8
http://onsemi.com
PIN CONNECTIONS
R
R
1
T
T
1
/C
NC
NC
NC
/C
T
T
1
2
3
4
1
2
3
4
5
6
7
(Top View)
(Top View)
Publication Order Number:
CASE 751A
D1 SUFFIX
CASE 751
D SUFFIX
SOIC−14
SOIC−8
14
13
12
11
10
8
7
6
5
9
8
V
V
Output
GND
V
NC
V
V
Output
GND
Power Ground
ref
ref
CC
C
CC
NCV3843BV/D

Related parts for NCV3843BVD1R2G

NCV3843BVD1R2G Summary of contents

Page 1

NCV3843BV High Performance Current Mode Controllers The NCV3843BV is a high performance fixed frequency current mode controller. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits ...

Page 2

MAXIMUM RATINGS Rating Bias and Driver Voltages (Zero Series Impedance, see also Total Device spec) Total Power Supply and Zener Current Output Current, Source or Sink Output Energy (Capacitive Load per Cycle) Current Sense and Voltage Feedback Inputs Error Amp ...

Page 3

ELECTRICAL CHARACTERISTICS T is the operating ambient temperature range that applies [Note 4], unless otherwise noted.) A Characteristics REFERENCE SECTION Reference Output Voltage (I = 1.0 mA Line Regulation ( Load ...

Page 4

ELECTRICAL CHARACTERISTICS T is the operating ambient temperature range that applies [Note 8], unless otherwise noted.) A Characteristics OUTPUT SECTION Output Voltage Low State ( mA) Sink (I = 200 mA) Sink High State ( mA) ...

Page 5

2 25° 100 k 200 OSCILLATOR FREQUENCY (kHz) OSC 1 Freq + Vosc Vosc ...

Page 6

Gain 100 1 100 k f, FREQUENCY (Hz) Figure 8. Error Amp Open Loop Gain and Phase versus Frequency 0 - 4.0 - 8.0 -12 Ä Ä Ä ...

Page 7

Source Saturation V Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä Ä CC (Load to Ground) -1 25°C A Ä Ä Ä Ä - 2.0 Ä Ä Ä Ä ...

Page 8

The NCV3843BV is a high performance, fixed frequency, current mode controller. They are specifically designed for Off−Line and DC−to−DC converter applications offering the designer a cost−effective solution with minimal external components. A representative block diagram is shown in Figure 18. ...

Page 9

V ref 8(14 Voltage Feedback Input 2(3) Error Amplifier Output/ Compensation 1(1) Pin numbers adjacent to terminals are for the 8-pin package. Pin numbers in parenthesis are for the D suffix SOIC-14 ...

Page 10

Undervoltage Lockout Two undervoltage lockout comparators have been incorporated to guarantee that the IC is fully functional before the output stage is enabled. The positive power supply terminal (V ) and the reference output (V CC each monitored by separate ...

Page 11

DI Control Voltage Inductor Current Oscillator Period (B) Control Voltage ...

Page 12

R Bias Osc 4(7) + 1.0mA 2( 1.0V EA 1.0M 1(1) C 5(9) ≈ 3600C Soft-Start Figure 24. Soft−Start Circuit V CC (12) 5.0V Ref + - D (11 ...

Page 13

Ref + - Comp/Latch Series gate resistor R will damp any high frequency parasitic oscillations g caused by the MOSFET input capacitance and any series wiring inductance in the gate-source circuit. Figure 28. MOSFET Parasitic ...

Page 14

From Error Amp compensation circuit for stabilizing any current mode topology except for boost and flyback converters operating with continuous inductor current. From Error Amp compensation ...

Page 15

... ORDERING INFORMATION Device NCV3843BVD1R2G NCV3843BVDR2 NCV3843BVDR2G †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. Operating Temperature Range T = −40° to +125°C A MARKING DIAGRAMS SOIC−14 SOIC−8 ...

Page 16

... G C SEATING PLANE −Z− 0.25 (0.010 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. PACKAGE DIMENSIONS SOIC−8 D1 SUFFIX CASE 751−07 ISSUE 0.10 (0.004 SOLDERING FOOTPRINT* 1 ...

Page 17

... 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− ...

Related keywords