MIC2168AYMM datasheet(3/18 Pages) MICREL

3 / 18 page

Micrel, Inc.

MIC2168A

Absolute Maximum Ratings

(1)

Supply Voltage (VIN) ..................................................+15.5V

Bootstrapped Voltage (VBST). ................................... VIN +5V

Junction Temperature (TJ) ..................–

40°C ≤ T

≤ +125°C

Storage Temperature (TS).........................–65°C to +150°C

Operating Ratings

(2)

Supply Voltage (VIN)...................................... +3V to +14.5V

Output Voltage Range............................. 0.8V to VIN × DMAX

Package Thermal Resistance

10-Pin MSOP (

JA)........................................... 180°C/W

Electrical Characteristics

(3)

TJ = 25°C, VIN = 5V, unless otherwise specified. Bold values indicate –40°C < TJ < +125°C.

Parameter

Condition

Min.

Typ.

Max.

Units

Feedback Voltage Reference

(± 1%)

0.792

0.8

0.808

Feedback Voltage Reference

(± 2% over temp)

0.784

0.8

0.816

Feedback Bias Current

100

Output Voltage Line Regulation

0.03

%/V

Output Voltage Load Regulation

0.5

Output Voltage Total Regulation

3V ≤ VIN ≤ 14.5V; 1A ≤ IOUT ≤ 10A; (VOUT = 2.5V)(4)

0.6

Oscillator Section

Oscillator Frequency

900

1000

1100

kHz

Maximum Duty Cycle (DMAX)

Minimum On-Time

(4)

Input and VDD Supply

PWM Mode Supply Current

VCS = VIN –0.25V; VFB = 0.7V

(output switching but excluding external MOSFET

gate current.)

1.6

Shutdown Quiescent Current

VCOMP/EN=0V

150

µA

VCOMP Shutdown Threshold

0.1

0.25

0.4

VCOMP Shutdown Blanking

Period

CCOMP = 100nF

Digital Supply Voltage (VDD)

VIN

≥ 6V

4.7

5.3

Error Amplifier

DC Gain

Transconductance

Soft Start

Soft-Start Current

After timeout of internal timer.

(See “Soft-Start” section.)

8.5

µA

Current Sense

CS Overcurrent Trip Point

VCS = VIN –0.25V

160

200

240

µA

Temperature Coefficient

+1800

ppm/°C

Notes:

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

the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max), the

junction-to-

ambient thermal resistance, θ

JA, and the ambient temperature, TA. The maximum allowable power dissipation will result in excessive die

temperature, and the regulator will go into thermal shutdown.

Devices are ESD sensitive, handling precautions required.

Specification for packaged product only.

Guaranteed by design.

April 22, 2015

Revision 3.0

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