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MC44605 Datasheet(PDF) 4 Page - ON Semiconductor

Part No. MC44605
Description  High Safety, Latched Mode, GreenLine TM PWM Controller for (Multi) Synchronized Applications
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC44605 Datasheet(HTML) 4 Page - ON Semiconductor

 
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MC44605
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ELECTRICAL CHARACTERISTICS (VCC and VC = 12 V, Rref = 10 kW, CT = 2.2 nF, for typical values TA = 25°C, for
min/max values TA = −25° to +85°C unless otherwise noted.) (Note 4)
Characteristic
Pin #
Symbol
Min
Typ
Max
Unit
ERROR AMPLIFIER SECTION
Voltage Feedback Input (VE/A out = 2.5 V)
14
VFB
2.4
2.5
2.6
V
Input Bias Current (VFB = 2.5 V)
14
IFB−ib
−2.0
−0.6
mA
Open Loop Voltage Gain (VE/A out = 2.0 V to 4.0 V)
AVOL
65
70
dB
Unity Gain Bandwidth
TJ = 25°C
TA = −25° to +85°C
BW
5.5
MHz
Voltage Feedback Input Line Regulation (VCC = 10 V to 15 V)
VFBline−reg
−10
10
mV
Output Current
Sink (VE/A out = 1.5 V, VFB = 2.7 V)
TA = −25° to +85°C
Source (VE/A out = 5.0 V, VFB = 2.3 V)
TA = −25° to +85°C
13
ISink
ISource
2.0
−2.0
12
−0.2
mA
Output Voltage Swing
High State (IE/A out (source) = 0.5 mA, VFB = 2.3 V)
Low State (IE/A out (sink) = 0.33 mA, VFB = 2.7 V)
13
VOH
VOL
5.5
6.5
1.0
7.5
1.1
V
CURRENT SENSE SECTION
Maximum Current Sense Input Threshold
(VFeedback (pin14) = 2.3 V and VSoft−Start (pin11) = 1.2 V)
7
Vcs−th
0.96
1.0
1.04
V
Input Bias Current
7
Ics−ib
−10
−2.0
mA
Propagation Delay (Current Sense Input to Output at VTH of MOS
transistor = 3.0 V)
tPLH(In/Out)
120
200
ns
OSCILLATOR AND SYNCHRONIZATION SECTION
Frequency (TA = −25° to +85°C)
FOSC
16
20
kHz
Frequency Change with Voltage (VCC = 10 V to 15 V)
DFOSC/DV
0.05
%/V
Frequency Change with Temperature (TA = −25° to +85°C)
DFOSC/DT
0.05
%/
°C
Ratio Charge Current/Reference Current (TA = −25° to +85°C)
Icharge/Iref
0.39
0.48
Free Mode Oscillator Ratio = Idischarge/(Idischarge + Icharge)
D
72
75
78
%
Synchronization Input Threshold Voltage
9
Vsyncth
−250
−200
−150
mV
Negative Clamp Level (Isyncth−in = 2.0 mA)
NEG−SYNC
−0.65
−0.5
−0.34
V
UNDERVOLTAGE LOCKOUT SECTION
Startup Threshold
1
Vstup−th
13.6
14.5
15.4
V
Disable Voltage After Threshold Turn−On (UVLO 1)
(TA = −25° to +85°C)
1
Vdisable1
8.3
9.6
V
Disable Voltage After Threshold Turn−On (UVLO 2)
(TA = −25° to +85°C)
1
Vdisable2
7.0
7.5
8.0
V
4. Adjust VCC above the startup threshold before setting to 12 V. Low duty cycle pulse techniques are used during test to maintain junction
temperature as close to ambient as possible.


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