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AX3842P / AX3842S
High Performance Current Mode Pwm Controlers
Description
The AX3842 Series is high performance fixed frequency current mode controllers.
That is specifically designed for Off-Line and DC To DC converter applications
offering the designer a costeffective 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
compara-tor, and a high current totem pole output ideally suited for driving a
power MOSFET. Also included are protective features consisting of input and
reference undervoltage lockouts each with hysteresis, cycle-by-cycle current
limiting, programmable output deadtime, and a latch for single pulse metering.
8-Lead Plastic
DIP-8
Package Code: P
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8-Lead Plastic
SO-8
Package Code: S
Features
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Trimmed Oscillator for Precise Frequency Control
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Oscillator Frequency Guaranteed at 250 kHz
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Current Mode Operation to 500 kHz
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Automatic Feed Forward Compensation
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Latching PWM for Cycle-By-Cycle Current Limiting
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Internally Trimmed Reference with Undervoltage Lockout
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High Current Totem Pole Output
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Undervoltage Lockout with Hysteresis
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Low Startup and Operating Current
Absolute Maximum Ratings
Symbol
V
i
V
i
I
O
E
O
Parameter
Supply Voltage (low impedance source)
Supply Voltage (I
i
<30mA)
Output Current
Output Energy (capacitive load)
Analog Inputs (pin 2, 3)
Error Amplifier Output Sink Current
P
tot
T
stg
T
J
T
L
Power Dissipation at T
amb
鈮?5
o
C
Storage Temperature Range
Junction Operating Temperature
Lead Temperature (soldering 10s)
Value
30
Self Limiting
鹵1
5
-0.3 to 5.5
10
800
-65 to 150
-40 to 150
300
A
uJ
V
mA
mW
o
o
o
Unit
V
C
C
C
Thermal Data
Symbol
Rth j-amb
Description
Thermal Resistance Junction-ambient
DIP-8
100
SO-8
150
Units
o
C/W
AVANTICS - AX3842 Series
Specification No.: 050308-FE0008
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AX3842相關(guān)型號(hào)PDF文件下載
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英文版
High Performance Current Mode Pwm Controlers
ETC
-
英文版
High Performance Current Mode Pwm Controlers
ETC [ETC]
-
英文版
High Performance Current Mode Pwm Controlers
ETC
-
英文版
High Performance Current Mode Pwm Controlers
ETC [ETC]
-
英文版
High Performance Current Mode Pwm Controlers
ETC
-
英文版
High Performance Current Mode Pwm Controlers
ETC [ETC]