December 1999

3

MIC2537

MIC2537

Micrel

Electrical Characteristics

V

Parameter

Condition

Min

Typ

Max

Units

Supply Current

Note 4, switch off, OUTA–D = open

0.75

5

µA

Note 4, all switches on, OUTA–D = open

70

100

µA

Enable Input Threshold

low-to-high transition

1.8

2.4

V

high-to-low transition, Note 4

0.8

1.6

V

Enable Input Current

V

0.01

1

µA

V

0.01

1

µA

Enable Input Capacitance

1pF

Switch Resistance

single switch, 100mA load

425

700

m

Ω

Output Turn-On Delay

R

0.51

ms

Output Turn-On Rise Time

R

0.2

0.5

ms

Output Turnoff Delay

R

150

300

µs

Output Turnoff Fall Time

R

148

300

µs

Output Leakage Current

each output (switch off)

1

10

µA

Current Limit Threshold

ramped load applied to enable output, Note 6

300

500

mA

Continuous Load Current

each output, FLG not active

100

mA

Short Circuit Current Limit

each output (enabled into load), V

150

250

400

mA

Overtemperature Shutdown

T

135

°C

Threshold

T

125

°C

Error Flag Output Resistance

V

10

Ω

V

12

Ω

Error Flag Off Current

V

0.01

1

µA

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

Ω in series with 100pF.

Note 4.

Off is

≤ 0.8V and on is ≥ 2.4V for the MIC2537-1. Off is ≥ 2.4V and on is ≤ 0.8V for the MIC2537-2. The enable input has approximately

200mV of hysteresis. See control threshold charts.

Note 5.

See “Timing Diagrams.”

Note 6.

See “Functional Characteristics: Current-Limit Response” graph.

Supply Voltage (V

Fault Flag Voltage (V

Fault Flag Current (I

Output Voltage (V

Output Current (I

Control Input (V

Storage Temperature (T

Lead Temperature (Soldering 5 sec.) ....................... 260

°C

ESD Rating, Note 3 ....................................................... 2kV

Supply Voltage (V

Ambient Operating Temperature (T

Thermal Resistance

SOP (

θ