MIC2203 datasheet(3/13 Pages) MICREL

3 / 13 page

Micrel, Inc.

MIC2203

Absolute Maximum Ratings(1)

Supply Voltage (VIN) .............................................. 6V

Output Switch Voltage (VSW) ................................. 6V

Logic Input Voltage (VEN, VSYNC_IN) .............VIN to –3V

Power Dissipation ............................................Note 5

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

ESD Rating

(3) ........................................................2kV

Operating Ratings(2)

Supply Voltage (VIN)................................2.3V to 5.5V

Junction Temperature Range ......... –40°C to +125°C

Package Thermal Resistance

MSOP-10L (

θJA)..................................... 115°C/W

3mmX3mm MLF-10L (

θJA)....................... 60°C/W

Electrical Characteristics(4)

TA = 25°C with VIN = VEN = 3.5V, unless otherwise specified. Bold values indicate –40ºC < TJ < +125ºC

Parameter

Condition

Min

Typ

Max

Units

Supply Voltage Range

2.3

5.5

VFB = 0.6V (not switching)

320

450

µA

Quiescent Current

EN = 0V (shutdown)

0.01

µA

No Load Supply Current

(switching)

870

µA

MIC2203 [Adjustable]

Feedback Voltage

0.4875

0.5

0.5125

Output Voltage Line

Regulation

VOUT < 2V; VIN = 2.3V to 5.5V, ILOAD= 50mA

0.13

0.5

Output Voltage Load

Regulation

0mA < ILOAD < 300mA

0.2

0.5

Bias Regulator Output

Voltage

2.2

2.32

2.6

Maximum Duty Cycle

VFB ≤ 0.4V

100

Current Limit

VFB = 0.4V

0.375

0.6

1.5

Switch ON-Resistance

ISW = 300mA VFB = 0.4V

ISW = -300mA VFB = 0.6V

1.5

2.2

1.6

Ω

Enable Input Current

0.01

µA

Sync Frequency Range

0.8

1.25

MHz

SYNC_IN Threshold

0.7

1.7

Sync Minimum Pulse

Width

SYNC_IN Input Current

µA

Oscillator Frequency

0.8

1.2

MHz

Enable Threshold

0.5

0.7

1.3

Enable Hysteresis

Over Temperature

Shutdown

Hysteresis

160

°C

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.

5. Absolute maximum power dissipation is limited by maximum junction temperature where PD(MAX) = (TJ(MAX) – TA) ÷

θJA.

December 2004

M9999-120604

(408) 955-1690

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