MIC2027/2077

Micrel

MIC2027/2077

4

June 2000

Electrical Characteristics

V

Symbol

Parameter

Condition

Min

Typ

Max

Units

I

DD

Supply Current

MIC20x7-1, V

1.5

10

µA

(switch off), OUT = open

MIC20x7-2, V

1.5

10

µA

(switch off), OUT = open

MIC20x7-1, V

200

320

µA

(switch on), OUT = open

MIC20x7-2, V

200

320

µA

(switch on), OUT = open

V

EN

Enable Input Threshold

low-to-high transition

1.7

2.4

V

high-to-low transition

0.8

1.45

V

Enable Input Hysteresis

250

mV

I

EN

Enable Input Current

V

–1

0.01

1

µA

Enable Input Capacitance

1

pF

R

DS(on)

Switch Resistance

V

100

150

m

Ω

V

110

170

m

Ω

Output Leakage Current

MIC20x7-1, V

10

µA

MIC20x7-2, V

Output Current in

MIC2077 (per Latch Output)

50

µA

Latched Thermal Shutdown

(during thermal shutdown state)

t

ON

Output Turn-On Delay

R

1.3

5

ms

t

R

Output Turn-On Rise Time

R

1.15

4.9

ms

t

OFF

Output Turnoff Delay

R

35

100

µs

t

F

Output Turnoff Fall Time

R

32

100

µs

I

LIMIT

Short-Circuit Output Current

V

0.5

0.9

1.25

A

Current-Limit Threshold

ramped load applied to output

1.0

1.25

A

Short-Circuit Response Time

V

20

µs

(short applied to output)

t

D

Overcurrent Flag Response

V

1.5

3

7

ms

Delay

V

3

ms

Undervoltage Lockout

V

2.2

2.4

2.7

V

Threshold

V

2.0

2.15

2.5

V

Error Flag Output

I

10

25

Ω

Resistance

I

15

40

Ω

Error Flag Off Current

V

10

µA

Overtemperature Threshold

T

140

°C

Note 4

T

120

°C

T

160

°C

T

150

°C

Note 1.

Exceeding the absolute maximum rating may damage the device.

Note 2.

The device is not guaranteed to function outside its operating rating.

Note 3.

Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.

Note 4.

If there is an output current limit fault on one channel, that channel will shut down when the die reaches approximately 140

°C. If the die

reaches approximately 160

°C, the other channel driven by the same input will shut down, even if neither channel is in current limit.