MIC22700 datasheet(3/21 Pages) MICREL

3 / 21 page

Micrel, Inc.

MIC22700

July 2009

M9999-072209-B

Absolute Maximum Ratings

(1)

Supply Voltage (VIN).......................................... –0.3V to 6V

Output Switch Voltage (VSW) ............................. –0.3V to 6V

Output Switch Current (ISW).......................Internally Limited

Logic Input Voltage (VEN VFLG) .......................... –0.3V to VIN

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

ESD Rating

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

Lead Temperature (Soldering 10sec) ........................ 260°C

Operating Ratings

(2)

Supply Voltage (VIN)......................................... 2.6V to 5.5V

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

Thermal Resistance

4x4 MLF-24 (

θJC) ...............................................14°C/W

4x4 MLF-24 (

θJA) ...............................................40°C/W

Electrical Characteristics

(4)

TA = 25°C with VIN = VEN = 3.3V; VOUT = 1.8V, unless otherwise specified. Bold values indicate –40°C< TJ < +125°C.

Parameter

Condition

Min

Typ

Max

Units

Supply Voltage Range

2.6

5.5

Under-Voltage Lockout Threshold

(turn-on)

2.4

2.5

2.6

UVLO Hysteresis

280

Quiescent Current, PWM Mode

VEN =>1.34V; VFB = 0.9V (not switching)

850

1300

µA

Shutdown Current

VEN = 0V

µA

[Adjustable] Feedback Voltage

± 2% (over temperature)

0.686

0.7

0.714

FB Pin Input Current

Current Limit

VFB = 0.5

10.5

Output Voltage Line Regulation

VOUT 1.8V; VIN = 2.6 to 5.5V, ILOAD= 100mA

0.2

Output Voltage Load Regulation

100mA < ILOAD < 7A, VIN = 3.3V

0.2

Maximum Duty Cycle

VFB ≤ 0.5V

100

Switch ON-Resistance PFET

Switch ON-Resistance NFET

ISW = 1000mA; VFB=0.5V

ISW = 1000mA; VFB=0.9V

0.03

0.025

Ω

Oscillator Frequency

0.8

1.2

MHz

EN/DLY Threshold Voltage

1.14

1.24

1.34

EN/DLY Source Current

VIN = 2.6 to VIN = 5.5V

0.7

1.3

µA

RC Pin IRAMP

Ramp Control Current

0.7

1.3

µA

Power On Reset IPG(LEAK)

VPORH = 5.5V; POR = High

µA

Power On Reset VPG(LO)

Output Logic-Low Voltage (undervoltage condition),

IPOR = 5mA

130

Threshold, % of VOUT below nominal

7.5

12.5

Power On Reset VPG

Hysteresis

Over-Temperature Shutdown

160

°C

Over-Temperature Shutdown

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.

4. Specification for packaged product only.

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