MC33680

http://onsemi.com

5

Parameter

Symbol

Min

Max

Unit

Power Supply Voltage

−0.3

7.0

Vdc

Digital Pin Voltage

−0.3

7.0

Vdc

General Analog Pin Voltage

−0.3

7.0

Vdc

Pin VAUXSW to Pin VAUXEMR Voltage (Continuous)

−0.3

30

Vdc

Pin VMAINSW to Pin VMAIN Voltage (Continuous)

0.3

Vdc

Operating Junction Temperature

150

°C

Ambient Operating Temperature

0

70

°C

Storage Temperature

−50

150

°C

otherwise noted.)

Rating

Symbol

Min

Typ

Max

Unit

1.0

V

VMAIN output voltage

3.1

3.3

3.5

V

2.7

5.0

V

200

mA

100

kHz

VMAIN peak coil static current limit

0.85

1.0

1.15

A

VAUX output voltage range

VAUX_range

5.0

25

V

VAUX maximum switching frequency

120

kHz

VAUX peak coil static current limit

1.0

A

35

60

μA

Reference Voltage @ no load

1.16

1.22

1.28

V

0.8

0.85

0.9

V

Battery Low Detect upper hysteresis threshold

1.05

1.1

1.15

V

PDELAY Pin output charging current

0.8

1.0

1.2

μA

PDELAY Pin voltage threshold

1.16

1.22

1.28

V

NOTE: 1. Output current capability is reduced with supply voltage due to decreased energy transfer. The supply voltage must not be higher than

VMAIN+0.6V to ensure boost operation. Max Start−up loading is typically 1V at 400 μA, 1.8V at 4.4 mA, and 2.2V at 88 mA.

NOTE: 2. Output voltage can be adjusted by external resistor to the VMAINFB pin.

NOTE: 3. At VBAT = 1.8V, output current capability increases with VBAT.

NOTE: 4. Only when current limit is not reached.

NOTE: 5. This is average current consumed by the IC from VDD, which is low−pass filtered from VMAIN, when only VMAIN is enabled and at no loading.

NOTE: 6. This is the minimum of ”LOWBATB” threshold for battery voltage, the threshold can be increased by external resistor divider from ”VBAT” to

”LOWBATSEN”.