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AIC3843CSTB

Description
Current-Mode PWM Controller
CategoryPower/power management    The power supply circuit   
File Size190KB,11 Pages
ManufacturerAIC [Analog Intergrations Corporation]
Download Datasheet Parametric Compare View All

AIC3843CSTB Overview

Current-Mode PWM Controller

AIC3843CSTB Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerAIC [Analog Intergrations Corporation]
package instructionSOP, SOP8,.25
Reach Compliance Codecompli
control modeCURRENT-MODE
JESD-30 codeR-PDSO-G8
JESD-609 codee0
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current0.02 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Certification statusNot Qualified
surface mountYES
Maximum switching frequency500 kHz
technologyBIPOLAR
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
AIC3843
Current-Mode PWM Controller
n
FEATURES
l
Low Start-Up Current (300µA Typical)
l
Internal Precision Reference.
l
500KHz Current-Mode Operation.
l
Pulse-by-Pulse Current Limiting.
l
Automatic Feed-Forward Compensation.
l
Optimized for Off-line and DC/DC Converters.
l
Under-voltage Lockout with Hysteresis.
l
Double Pulse Suppression.
l
High Current Totem Pole Output.
n
DESCRIPTION
The AIC3843 control IC provides the features
that are necessary to implement off-line or
DC/DC Converter fixed-frequency current-mode
schemes with a minimum number of external
components. This integrated circuits features
an under-voltage lockout (UVLO) with approxi-
mately 300µA start-up current, a precision
reference trimmed for accuracy at the error
amplifier input, high gain error amplifier, current
sensing comparator, logic to insure latched
operation, and a totem-pole output stage
designed to source or sink high peak current.
The output stage, suitable for driving the N-
channel MOSFETs, is low in the off state.
n
APPLICATIONS
l
AC/DC Off-line Converter.
l
DC/DC Off-line Converter.
n
TYPICAL APPLICATION CIRCUIT
2
C2
R3
51K
FEEDBACK
SIGNAL
300pF
C3
1000P
6
OUTPUT
GND
5
VFB
7
VCC
+
R1
10
R2
20K
R5
C6
300P
390
C7
1nF
RS
0.33
C1
47
µ
F
VCC
INDUCTOR
M1
1
8
COMP
VREF
R4
7.5K
C5
0.1
µ
F
4
RT/CT
ISENSE
3
AIC3843
C4
2.2nF
Current Mode PWM Control Circuit
Analog Integrations Corporation
4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
DS-3843-00 012102
1

AIC3843CSTB Related Products

AIC3843CSTB AIC3843 AIC3843CNTR AIC3843CNTB AIC3843CSTR
Description Current-Mode PWM Controller Current-Mode PWM Controller Current-Mode PWM Controller Current-Mode PWM Controller Current-Mode PWM Controller
Is it Rohs certified? incompatible - - incompatible incompatible
Maker AIC [Analog Intergrations Corporation] - - AIC [Analog Intergrations Corporation] AIC [Analog Intergrations Corporation]
package instruction SOP, SOP8,.25 - - DIP, DIP8,.3 SOP, SOP8,.25
Reach Compliance Code compli - - compli compli
control mode CURRENT-MODE - - CURRENT-MODE CURRENT-MODE
JESD-30 code R-PDSO-G8 - - R-PDIP-T8 R-PDSO-G8
JESD-609 code e0 - - e0 e0
Number of terminals 8 - - 8 8
Maximum operating temperature 85 °C - - 85 °C 85 °C
Minimum operating temperature -40 °C - - -40 °C -40 °C
Maximum output current 0.02 A - - 0.02 A 0.02 A
Package body material PLASTIC/EPOXY - - PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP - - DIP SOP
Encapsulate equivalent code SOP8,.25 - - DIP8,.3 SOP8,.25
Package shape RECTANGULAR - - RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE - - IN-LINE SMALL OUTLINE
Certification status Not Qualified - - Not Qualified Not Qualified
surface mount YES - - NO YES
Maximum switching frequency 500 kHz - - 500 kHz 500 kHz
technology BIPOLAR - - BIPOLAR BIPOLAR
Temperature level INDUSTRIAL - - INDUSTRIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn/Pb) - - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING - - THROUGH-HOLE GULL WING
Terminal pitch 1.27 mm - - 2.54 mm 1.27 mm
Terminal location DUAL - - DUAL DUAL
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