MIC2267YML datasheet(4/19 Pages) MICREL

4 / 19 page

Micrel Inc.

MIC2267

January 2011

M9999-011711-A

Electrical Characteristics (4)

VIN = VEN = 5.0V, VOUT = 3.3V, ILOAD = 10mA, CIN = 10µF, L = 4.7µH, COUT = 47µF, RFREQ = 100kΩ; RSLOPEC = 100kΩ, RLIM = 100kΩ,

RCOMP = 11.5kΩ, CCOMP = 15nF, TA = 25°C; bold values indicate –40°C ≤ TJ ≤ 125°C; unless noted.

Parameter

Conditions

Min.

Typ.

Max.

Units

Soft Start

Adaptive

Internal FETs

Top MOSFET RDS(ON)

ISW = 500mA, VFB = 0.9V

136

225

mΩ

Bottom MOSFET RDS(ON)

ISW = 500mA, VFB = 1.1V

100

225

mΩ

Oscillator/PWM

RFREQ = 250kΩ

0.32

0.4

0.48

RFREQ = 100kΩ

0.8

1.2

Oscillator Frequency

RFREQ = 60kΩ

1.2

1.5

1.8

MHz

Maximum Duty Cycle

VFB < 0.5V

100

Thermal Protection

Over Temperature Shutdown

160

°C

Over Temperature Shutdown

Hysteresis

°C

Power Good

Power Good Threshold

VOUT Rising (VOUT % below nominal)

6.5

12.5

Power Good Output Low

Voltage

VFB = 0.9V, IPGOOD = 5mA

130

200

Power Good Leakage Current

VFB = 1.0V, VPGOOD = 5.5V

µA

Note:

4. Specification for packaged product only.

MIC2267YML Datasheet(PDF) 4 Page - Micrel Semiconductor

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