Micrel, Inc.

MIC22200

December 2010

3

M9999-120310-C

Absolute Maximum Ratings

(1)

Output Switch (SW)..........................................................6V

Logic Voltage (EN/DLY, POR, DELAY) ............VIN to -0.3V

Control Voltage (CF, RC, COMP, FB) ..............VIN to -0.3V

Lead Temperature (soldering 10s)............................. 260°C

Storage Temperature Range (Ts).............

−65°C to +150°C

EDS Rating

Operating Ratings

(2)

Thermal Resistance

Electrical Characteristics

(4)

Parameter

Condition

Min.

Typ.

Max.

Units

Supply Voltage Range

2.6

5.5

V

Under-Voltage Lockout Threshold

(turn-on)

2.4

2.5

2.6

V

UVLO Hysteresis

280

mV

Quiescent Current, PWM mode

1.2

2

mA

Shutdown Current

3.7

10

µA

Feedback Voltage

± 2% (over temperature)

0.686

0.7

0.714

V

Oscillator Frequency

0.8

1

1.2

MHz

FB Pin Input Current

1

nA

Current Limit

2

5.5

8

A

Output Voltage Line Regulation

0.2

%

Output Voltage Load Regulation

0.2

%

Maximum Duty Cycle

VFB

≤ 0.5V

100

%

Switch ON-Resistance PFET

Switch ON-Resistance NFET

0.18

0.10

Ω

EN/DLY Threshold Voltage

1.14

1.24

1.34

V

EN/DLY Hysteresis

12

mV

DELAY Threshold Voltage

1.14

1.24

1.34

V

DELAY Hysteresis

6

mV

EN/DLY Source Current

0.7

1

1.3

µA

RC Source Current

Ramp Control Current

0.7

1

1.3

µA

POR IPG(LEAK)

1

2

µA

POR VPG(LO)

Output Logic-Low Voltage

135

mV

Notes:

1. Exceeding the absolute maximum rating may damage the device.

2. The device is not guaranteed to function outside its operating rating.

3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.

4. Specification for packaged product only.