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  ON Semiconductor Electronic Components Datasheet  

MC33066 Datasheet

(MC33066 / MC34066) High Performance High Performance

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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
Osc
Deadtime 1
Osc RC
Osc Control 2
Current 3
One−Shot RC
16
VCC UVLO
Reference
Regulator
Variable
Frequency
Oscillator
One−Shot
Vref UVLO
Steering
Flip−Flop
Aout
Bout
Error Amp
Clamp
Error Amp
Out 6 Error
Amplifier
Error Amp +
8
Error Amp −
7
CSoft−Start
11
Soft−Start
Fault−Detector/
Latch
Figure 1. Simplified Block Diagram
5 Vref
Gnd
4
Drive
14 Output A
Drive
12 Output B
Drive Gnd
13
Fault Input
10
16
1
16
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MARKING
DIAGRAMS
16
PDIP16
P SUFFIX
CASE 648
MC3x066P
AWLYYWW
1
16
SO16W
DW SUFFIX
CASE 751G
MC33066DW
AWLYYWW
11
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
© Semiconductor Components Industries, LLC, 2006
July, 2006 Rev. 3
1
Publication Order Number:
MC34066/D


  ON Semiconductor Electronic Components Datasheet  

MC33066 Datasheet

(MC33066 / MC34066) High Performance High Performance

No Preview Available !

MC34066, MC33066
MAXIMUM RATINGS
Rating
Power Input Supply Voltage
Drive Output Current, Source or Sink (Note 1)
Continuous
Pulsed (0.5 μs, 25% Duty Cycle)
Error Amplifier, Fault, OneShot, Oscillator, and
SoftStart Inputs
UVLO Adjust Input
SoftStart Discharge Current
Power Dissipation and Thermal Characteristics
DW Suffix Package, Case 751G
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, JunctiontoAir
P Suffix Package, Case 648
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, JunctiontoAir
Operating Junction Temperature
Operating Ambient Temperature
MC34066
MC33066
Storage Temperature Range
Symbol
VCC
IO
Vin
Vin(UVLO)
Idchg
PD
RθJA
PD
RθJA
TJ
TA
Tstg
Value
20
0.3
1.5
1.0 to +6.0
1.0 to VCC
20
862
145
1.25
100
+150
0 to +70
40 to +85
65 to +150
Unit
V
A
V
V
mA
mW
°C/W
W
°C/W
°C
°C
°C
ELECTRICAL CHARACTERISTICS (VCC = 12 V [Note 2], ROSC = 95.3 k, RDT = 0 Ω, RVFO = 5.62 k, COSC = 300 pF, RT = 14.3 k,
CT = 300 pF, CL = 1.0 nF, for typical values TA = 25°C, for min/max values TA is the operating ambient temperature range that applies
[Note 3], unless otherwise noted.)
Characteristics
Symbol
Min Typ Max Unit
REFERENCE SECTION
Reference Output Voltage (IO = 0 mA, TA = 25°C)
Line Regulation (VCC = 10 V to 18 V)
Load Regulation (IO = 0 mA to 10 mA)
Total Output Variation over Line, Load, and Temperature
Output Short Circuit Current
Reference Undervoltage Lockout Threshold
ERROR AMPLIFIER
Input Offset Voltage (VCM = 1.5 V)
Input Bias Current (VCM = 1.5 V)
Input Offset Current (VCM = 1.5 V)
Open Loop Voltage Gain (VCM = 1.5 V, VO = 2.0 V)
Gain Bandwidth Product (f = 100 kHz)
Vref
Regline
Regload
Vref
IO
Vth
VIO
IIB
IIO
AVOL
GBW
5.0 5.1 5.2
V
1.0 20 mV
1.0 20 mV
4.9 5.3 mV
25 100 190 mA
3.8 4.3 4.8
V
1.0 10 mV
0.2 1.0 μA
0 0.5 μA
70 100
dB
2.5 4.2
MHz
Input Common Mode Rejection Ratio (VCM = 1.5 V to 5.0 V)
CMRR
70 95
Power Supply Rejection Ratio (VCC = 10 V to 18 V, f = 120 Hz)
PSRR
80 100
Output Voltage Swing
High State with Respect to Pin 3 (ISource = 2.0 mA)
Low State with Respect to Ground (ISink = 1.0 mA)
VOH 2.3 2.7 3.1
VOL 0.4 0.6
1. Maximum package power dissipation limits must be observed.
2. Adjust VCC above the Startup threshold before setting to 12 V.
3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
Tlow = 0°C for MC34066
40°C for MC33066
Thigh = +70°C for MC34066
+85°C for MC33066
dB
dB
V
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Part Number MC33066
Description (MC33066 / MC34066) High Performance High Performance
Maker ON Semiconductor
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MC33066 Datasheet PDF






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