MC33470 데이터 시트보기 (PDF) - Motorola => Freescale

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MC33470

Synchronous Rectification DC/DC Converter Programmable Integrated Controller

Motorola => Freescale 

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

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