Micrel, Inc.

MIC2168A

Absolute Maximum Ratings

(1)

40°C ≤ T

J

≤ +125°C

Operating Ratings

(2)

Package Thermal Resistance

10-Pin MSOP (

θ

Electrical Characteristics

(3)

Parameter

Condition

Min.

Typ.

Max.

Units

Feedback Voltage Reference

(± 1%)

0.792

0.8

0.808

V

Feedback Voltage Reference

(± 2% over temp)

0.784

0.8

0.816

V

Feedback Bias Current

30

100

nA

Output Voltage Line Regulation

0.03

%/V

Output Voltage Load Regulation

0.5

%

Output Voltage Total Regulation

0.6

%

Oscillator Section

Oscillator Frequency

900

1000

1100

kHz

90

Minimum On-Time

(4)

30

60

ns

PWM Mode Supply Current

(output switching but excluding external MOSFET

gate current.)

1.6

3

mA

Shutdown Quiescent Current

50

150

µA

VCOMP Shutdown Threshold

0.1

0.25

0.4

V

VCOMP Shutdown Blanking

Period

4

ms

≥ 6V

4.7

5

5.3

V

Error Amplifier

DC Gain

70

dB

Transconductance

1

ms

Soft Start

Soft-Start Current

After timeout of internal timer.

(See “Soft-Start” section.)

8.5

µA

Current Sense

CS Overcurrent Trip Point

160

200

240

µA

Temperature Coefficient

+1800

ppm/°C

Notes:

1.

Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating

junction-to-

ambient thermal resistance, θ

temperature, and the regulator will go into thermal shutdown.

2.

Devices are ESD sensitive, handling precautions required.

3.

Specification for packaged product only.

4.

Guaranteed by design.

April 22, 2015

3

Revision 3.0