MC33470 Datasheet, PDF (4/16 Pages) ON Semiconductor – SYNCHRONOUS RECTIFICATION DC/DC CONVERTER PROGRAMMABLE INTEGRATED CONTROLLER

MC33470
ELECTRICAL CHARACTERISTICS (continued) (VCC = 5.0 V, PVCCCC, = 12 V for typical values TA = Low to High [Notes 1, 2, 3], for
min/max values TA is the operating ambient temperature range that applies, unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
FAULT OUTPUT
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Threshold For Logic “0” to “1” Transition}
VthF
1.12
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Vsense Response Time Switches from 2.8 V to VCC}
trF
50
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Sink Current (VOL = 0.5 V)}
IOLF
–
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{OVERTEMPERATURE OUTPUT}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Threshold For Logic “1” to “0” Transition (OUTEN Voltage Decreasing)
VthOUTEN
1.85
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Delay Time
tDOT
25
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Sink Current (VOL = 0.5 V)
IOLF
–
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ LOGIC INPUTS (VID0, VID1, VID2, VID3, VID4)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Input Low State
VIL
–
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Input High State
VIH
3.5
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Input Impedance
Rin
–
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ OUTPUT ENABLE CONTROL (OUTEN)
Over–Temperature Driver Disable and Reset
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{(OUTEN Voltage Decreasing) (Note 7)}
VOTDD
1.55
1.14
100
10
2.0
50
10
–
–
10
1.70
1.2
Vref
150
µs
–
mA
2.2
V
100
µs
–
mA
0.8
V
–
V
–
kΩ
1.85
V
OUTPUT SECTIONS (G1, G2)
Source Resistance (Vsense = 2.0 V, VG = PPVVCCCC– 1.0 V)
Sink Resistance (Vsense = 0 V, VG = 1.0 V)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Output Voltage with OUTEN Reset (Isink = 1.0 mA)}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Output Voltage Rise Time (CL = 10 nF, TJ = 25°C)}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Output Voltage Fall Time (CL = 10 nF, TJ = 25°C)}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{G1, G2 Non–Overlap Time (CL = 10 nF, TJ = 25°C)}
ROH
ROL
VOL
tr
tf
tNOL
–
0.5
–
Ω
–
0.5
–
–
0.1
0.5
V
–
70
140
ns
–
70
140
ns
30
150
210
ns
TOTAL DEVICE
Minimum Operating Voltage After Turn–On (PVCCCC Decreasing)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ^{Minimum Operating Voltage After Turn–On (VCC Decreasing)}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VCC Current (Note 8) (OUTEN and PPVVCCCCopen,
PVCC _min
10.8
–
–
V
VCC _min
3.0
ICC
–
–
4.25
V
3.7
8.0
mA
VID0, 1, 2, 3, 4 Floating)
PVCCCC Current (OUTEN = 5.0 V, VID0, 1, 2, 3, 4 Open, PPVVCCCC = 12 V)
PICC
–
15
–
mA
NOTES: 1. Maximum package power dissipation limits must be observed.
2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
3. VID1, VID3, VID4 = logic 0, and VID0, VID2 = logic 1.
4. Vsense is provided from a low impedance voltage source or shorted to the output voltage.
5. Under a typical soft current limit, the net soft–start discharge current will be 90 µA (ISSIL) – 10 µA (Ichg) = 80 µA. The softstart
sink to source current ratio is designed to be 9:1.
6 Sense (Pin 6) = 5.0 V, Comp (Pin 10) open, VID4, VID2, VID1, VID0 = 1.0, VID3 = 0.
7. OUTEN is internally pulled low if VID0, 1, 2, 3, and 4 are floating.
8. Due to internal pull–up resistors, there will be an additional 0.5 mA per pin if any of the VID0, 1, 2, 3, or 4 pins are pulled low.
4
MOTOROLA ANALOG IC DEVICE DATA