MIC2207 datasheet(3/21 Pages) MICREL

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Micrel

MIC2207

Absolute Maximum Ratings

(1)

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

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

Output Switch Current (ISW) ................................. 11A

Logic Input Voltage (VEN)......................... -0.3V to VIN

Storage Temperature (Ts)................ -60°C to +150°C

ESD Rating

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

Operating Ratings

(2)

Supply Voltage (VIN)............................+2.7V to +5.5V

Logic Input Voltage (VEN) ............................. 0V to VIN

Junction Temperature (TJ) .............. –40°C to +125°C

Junction Thermal Resistance

3x3 MLF-12L (

θJA) ................................... 60°C/W

Electrical Characteristics

(4)

VIN = VEN = 3.6V; L = 1µH; COUT = 4.7µF; TA = 25°C, unless noted. Bold values indicate –40°C< TJ < +125°C

Parameter

Condition

Min

Typ

Max

Units

Supply Voltage Range

2.7

5.5

Under-Voltage Lockout

Threshold

(turn-on)

2.45

2.55

2.65

UVLO Hysteresis

100

Quiescent Current

VFB = 0.9 * VNOM (not switching)

570

900

µA

Shutdown Current

VEN = 0V

µA

[Adjustable] Feedback

Voltage

± 1% ILOAD = 100mA

± 2% (over temperature) ILOAD = 100mA

0.99

0.98

1.01

1.02

FB pin input current

Current Limit in PWM Mode

VFB = 0.9 * VNOM

3.5

Output Voltage Line

Regulation

VOUT > 2V; VIN = VOUT+500mV to 5.5V; ILOAD= 100mA

VOUT < 2V; VIN = 2.7V to 5.5V; ILOAD= 100mA

0.07

Output Voltage Load

Regulation

20mA < ILOAD < 3A

0.2

0.5

Maximum Duty Cycle

VFB ≤ 0.4V

100

PWM Switch ON-

Resistance

ISW = 50mA VFB = 0.7VFB_NOM (High Side Switch)

200

300

Ω

Oscillator Frequency

1.8

2.2

MHz

Enable Threshold

0.5

0.85

1.3

Enable Hysteresis

Enable Input Current

0.1

µA

Power Good Range

±7

±10

Power Good Resistance

IPGOOD = 500µA

145

200

Ω

Over-Temperature

Shutdown

160

°C

Over-Temperature

Hysteresis

°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

Ω in series with 100pF.

4. Specification for packaged product only.

5. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value that is initially

measured at a 1V differential. For outputs below 2.7V, the dropout voltage is the input-to-output voltage differential with a minimum

input voltage of 2.7V.

April 2005

M9999-040705

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