MC33466H-30JT1 ONSEMI [ON Semiconductor], MC33466H-30JT1 Datasheet - Page 3

• Manufacturer Part Number: MC33466H-30JT1
• Description: FIXED FREQUENCY PWM MICROPOWER DC-to-DC CONVERTER
• Manufacturer: ONSEMI [ON Semiconductor]

ELECTRICAL CHARACTERISTICS
OSCILLATOR
LX OUTPUT (JT1 SUFFIX)
EXT OUTPUT (LT1 SUFFIX)
TOTAL DEVICE
NOTES: 1. When the Lx switch is turned on, I Lx current carried through the R DS(on) of the Lx switch results in V Lx . When V Lx reaches V LxLim , the Lx switch is
MOTOROLA ANALOG IC DEVICE DATA
Frequency
Oscillator Minimum Startup Voltage (I O = 0 mA)
Oscillator Minimum Supply Voltage (I O = 0 mA)
ON State Sink Current (V Lx = 0.4 V)
V Lx Voltage Limit (Note 1)
OFF State Leakage Current (V Lx = 6.0 V)
ON State Source Current (V EXT = V O – 0.4 V)
OFF State Sink Current (V EXT = 0.4 V)
Maximum Duty Ratio Each Cycle
Output Voltage
Soft–Start Time (Note 2)
Quiescent Bias Current (V in = 2.0 V, I O = 0 mA)
Quiescent Bias Current (V in = V O + 0.5 V, I O = 0 mA)
Quiescent Bias Current (V in = 2.0 V, I O = 0 mA)
Quiescent Bias Current (V in = V O + 0.5 V, I O = 0 mA)
LX output
EXT output
30KT1 Suffix
33KT1 Suffix
50KT1 Suffix
30LT1 Suffix
33LT1 Suffix
50LT1 Suffix
30LT1 Suffix
33LT1 Suffix
50LT1 Suffix
30KT1 or 30LT1 Suffix
33KT1 or 33LT1 Suffix
50KT1 or 50LT1 Suffix
30JT1 Suffix
33JT1 Suffix
50JT1 Suffix
30JT1 Suffix
33JT1 Suffix
50JT1 Suffix
30LT1 Suffix
33LT1 Suffix
50LT1 Suffix
30LT1 Suffix
33LT1 Suffix
50LT1 Suffix
2. The soft–start circuit turn–on sequence is as follows:
turned off by the Lx switch protection circuit.
a) V in is applied.
b) The internal IC V ref is held at zero for 200 s. During this time, the error amplifier output voltage ramps up to the positive voltage rail.
c) The internal reference steps up to 0.7 V after 200 s delay has timed out.
d) The error amplifier output voltage integrates down to its steady state value. As the error amplifier output integrates down, the output Lx pin of EXT
pin pulse width gradually widens to its steady operating value.
Characteristic
(V CC = 2.0 V, I O = 10 mA and T A = 25 C, unless otherwise noted.)
MC33466
Symbol
V LxLim
I source
V start
I LKG
V CC
I sink
f osc
V O
T ss
I Lx
I Q
I Q
D
1.575
1.575
2.925
3.218
4.875
0.65
Min
0.7
1.5
2.0
1.5
2.0
0.5
40
80
60
63
80
70
–
–
–
–
–
–
–
–
–
–
–
–
–
–
34.5
Typ
100
0.8
0.8
3.0
3.3
5.0
2.0
1.2
1.2
2.0
1.2
1.2
2.0
50
80
15
17
30
30
60
–
–
–
–
–
–
–
–
–
–
–
3.075
3.383
5.125
Max
120
0.9
1.0
0.5
5.0
5.0
5.0
5.0
5.0
5.0
60
90
25
27
45
50
56
90
–
–
–
–
–
–
–
–
–
–
–
Unit
kHz
mA
mA
mA
ms
%
V
V
V
V
A
A
A
3