MIC2168 datasheet(3/14 Pages) MICREL

3 / 14 page

April 2005

M9999-040805

MIC2168

Micrel, Inc.

Absolute Maximum Ratings(1)

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

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

Junction Temperature (TJ)...................–40°C ≤ TJ ≤+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

θJA 10-lead MSOP.............................................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

Minimum On-Time(4)

Input and VDD Supply

PWM Mode Supply Current

VCS = VIN –0.25V; VFB = 0.7V (output switching but excluding

1.6

external MOSFET gate current.)

Shutdown Quiescent Current

VCOMP/EN = 0V

150

VCOMP Shutdown Threshold

0.1

0.25

0.4

VCOMP Shutdown Blanking

CCOMP = 100nF

Period

Digital Supply Voltage (VDD)

VIN ≥ 6V

4.7

5.3

Notes:

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

die 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.

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