MIC2224YML datasheet(3/13 Pages) MICREL

3 / 13 page

Micrel, Inc.

MIC2224

September 2006

M9999-091106

Absolute Maximum Ratings(1)

Supply Voltage (VIN)............................................... 0V to 6V

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

DAC Input Voltage (VDAC)............................ 0V to VIN +0.3V

Output Switch Current (ISW)...........................................2.5A

Logic Input Voltage (VEN) ............................ 0V to VIN +0.3V

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

Operating Ratings(2)

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

Output Voltage (VOUT). ........................................ 0V to 5.5V

DAC Input Voltage (VDAC).................................... 0.1V to VIN

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

Thermal Resistance

MLF

®-10 (θ

JA) .................................................... 60°C/W

Electrical Characteristics(4)

VIN = VEN = 3.6V; VDAC = 0.6V; L = 4.7µH; COUT = 1µF; TA = 25°C, bold values indicate –40°C< TJ < +125°C, unless noted.

Parameter

Condition

Min

Typ

Max

Units

Supply Voltage Range

2.7

5.5

Total Quiescent Current

VDAC = 0.6V VOUT = 2.4V (regulator on, not switching)

360

450

µA

Shutdown Current

VEN = 0V (regulator off)

µA

Maximum Duty Cycle

100

Regulation

Output Voltage

VDAC = 0.6V, ILOAD =0mA

1.746

1.8

1.854

Output Voltage Line Regulation

3.0V ≤ VIN ≤ 4.5, ILOAD= 10mA

0.05

0.5

%/V

Output Voltage Load Regulation

0mA < IOUT < 500mA

0.2

Output

Switch On-Resistance

ISW = -100mA, High-Side Switch

ISW = 100mA , Low-Side Switch

0.55

0.6

0.75

0.85

Ω

Current limit (Peak SW Current)

0.65

0.85

1.6

Oscillator

Frequency

1.8

2.2

MHz

Enable / UVLO

Enable Pin Threshold

0.5

0.9

1.3

Enable Pin Hysteresis

Enable Pin Input Current

0.01

µA

EN high to 90% VOUT

µs

Under-Voltage Lockout Threshold

(turn-on)

2.6

2.7

UVLO Hysteresis

DAC Input

DAC Input Current

0.15

µA

Output Voltage/DAC Voltage

(internally set)

V/V

Bypass Switch

Bypass Switch Threshold

1.176

1.2

1.224

Bypass Switch Hysteresis

Bypass Transition Time

µs

Bypass Switch On-Resistance

mΩ

Bypass Switch Leakage

µA

Bypass Over-Current Limit

1.4

2.5

Current Limit Retry Time

µs

Current Limit Retry Duty Cycle

12.5

MIC2224YML Datasheet(PDF) 3 Page - Micrel Semiconductor

MIC2224YML Datasheet(HTML) 3 Page - Micrel Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13

Datasheet Download

Link URL