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MC33066DW View Datasheet(PDF) - ON Semiconductor

Part Name
Description
Manufacturer
MC33066DW Datasheet PDF : 11 Pages
1 2 3 4 5 6 7 8 9 10
MC34066, MC33066
High Performance
Resonant Mode Controllers
The MC34066/MC33066 are high performance resonant mode
controllers designed for offline and dctodc converter applications
that utilize frequency modulated constant ontime or constant
offtime control. These integrated circuits feature a variable
frequency oscillator with programmable deadtime, precision
retriggerable oneshot timer, temperature compensated reference,
high gain widebandwidth error amplifier with a precision output
clamp, steering flipflop, and dual high current totem pole outputs
ideally suited for driving power MOSFETs.
Also included are protective features consisting of a high speed fault
comparator and latch, programmable softstart circuitry, input
undervoltage lockout with selectable thresholds, and reference
undervoltage lockout.
These devices are available in dualinline and surface mount
packages.
Variable Frequency Oscillator with a Control Range Exceeding
1000:1
Programmable Oscillator Deadtime Allows Constant OffTime
Operation
Precision Retriggerable OneShot Timer
Internally Trimmed Bandgap Reference
5.0 MHz Error Amplifier with Precision Output Clamp
Dual High Current Totem Pole Outputs
Selectable Undervoltage Lockout Thresholds with Hysteresis
Enable Input
Programmable SoftStart Circuitry
Low Startup Current for OffLine Operation
VCC
15
Enable/
UVLO Adjust 9
VCC UVLO
Reference
Regulator
Osc
Deadtime 1
Osc RC
Osc Control 2
Current 3
One−Shot RC
16
Variable
Frequency
Oscillator
One−Shot
Vref UVLO
Aout
Steering
Flip−Flop
Bout
Error Amp
Clamp
Error Amp
Out 6 Error
Amplifier
Error Amp +
8
Error Amp −
7
CSoft−Start
11
Soft−Start
Fault−Detector/
Latch
5 Vref
Gnd
4
Drive
14 Output A
Drive
12 Output B
Drive Gnd
13
Fault Input
10
16
1
16
http://onsemi.com
MARKING
DIAGRAMS
16
PDIP16
P SUFFIX
CASE 648
MC3x066P
AWLYYWW
1
16
SO16W
DW SUFFIX
CASE 751G
MC33066DW
AWLYYWW
1
1
x = 3 or 4
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
PIN CONNECTIONS
Osc Deadtime 1
Osc RC 2
Osc Control 3
Current
Gnd 4
Vref 5
Error Amp Out 6
Error Amp 7
Inverting Input
Error Amp 8
Noninverting Input
(Top View)
16 One−Shot RC
15 VCC
14 Drive Output A
13 Drive Gnd
12 Drive Output B
11 CSoft−Start
10 Fault Input
9
Enable/UVLO
Adjust
ORDERING INFORMATION
Device
Package
Shipping
MC34066P
PDIP16
25 Units/Rail
MC33066DW
SO16W
47 Units/Rail
MC33066P
PDIP16
25 Units/Rail
Figure 1. Simplified Block Diagram
© Semiconductor Components Industries, LLC, 2006
1
July, 2006 Rev. 3
Publication Order Number:
MC34066/D
 

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