SG3842G2ADZ データシートの表示（PDF） - Unspecified
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SG3842G2ADZ Datasheet PDF : 19 Pages
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BiCMOS Green-Mode PWM Controllers
Product Specification
SG3842G/ SG3843G
MARKING INFORMATION
8
SG384ZGTP
AXXXXXXXYYWWV
1
Z: 2, 3
T: D = DIP, S = SOP
P : Z = Lead Free
Null=Regular Package
XXXXXXX: Wafer Lot
YY: Year; WW: Week
V: Assembly Location
PIN CONFIGURATION
COMP 1
VFB
2
SENSE 3
RT/CT 4
8 VREF
7 VCC
6 OUTPUT
5 GND
ORDERING INFORMATION
Part Number
SG3842GAD
SG3842GAS
SG3842G2AD
SG3842G2AS
SG3843GAD
SG3843GAS
SG3842GADZ
SG3842GASZ
SG3842G2ADZ
SG3842G2ASZ
SG3843GADZ
SG3843GASZ
UVLO
Start threshold Stop threshold
16V±1V
10V±1V
8.9V±0.5V
8.1V±0.5V
16V±1V
10V±1V
8.9V±0.5V
8.1V±0.5V
AV
Package
8-Pin DIP
5.0
8-Pin SOP
8-Pin DIP
3.0
8-Pin SOP
8-Pin DIP
3.0
8-Pin SOP
8-Pin DIP(Lead Free)
5.0
8-Pin SOP( Lead Free)
8-Pin DIP(Lead Free)
3.0
8-Pin SOP( Lead Free)
8-Pin DIP( Lead Free)
3.0
8-Pin SOP( Lead Free)
PIN DESCRIPTIONS
Pin No. Symbol Function
Description
1
COMP Compensation
Output of the Error Amplifier and input to the PWM comparator. It is used for feedback
loop compensation.
2
VFB
Feedback
Inverting input of the Error Amplifier. It is normally connected to the switching power
supply output through a resistor divider.
3
SENSE Current sense
Current sense comparator input. It is internally set to 1V maximum. A voltage proportional
to the inductor current is connected to this input.
Oscillator RC timing connection. Connecting a resistor RT from this pin to Vref, and a
4
RT/CT Oscillator control capacitor CT from this pin to ground, programs the oscillator frequency and the maximum
output duty cycle.
5
GND
Ground
This pin is the combined control circuit ground and power ground.
6
OUTPUT Output
High-power, totem-pole driver output. This output drives the gate of a power MOSFET.
7
VCC
Power supply
Supply voltage input.
8
VREF
Reference voltage 5V-reference voltage output.
© System General Corp.
-2-
Version 1.4 ( IRO33.0007.B3)
www.sg.com.tw
Jun.28,2004
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