MIC2807 datasheet(3/17 Pages) MICREL

3 / 17 page

Micrel, Inc.

MIC2807

January 2007

M9999-013007-A

Absolute Maximum Ratings

(1)

Supply Voltage (PVIN, AVIN, VIN) ............................ 0V to 6V

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

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

Logic Input Voltage (VEN, VEN1, VEN2) ..................... 0V to VIN

Power Dissipation

(3)...................................Internally Limited

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

ESD Rating

(4)................................................................ ±2kV

Operating Ratings

(2)

Supply Voltage (PVIN, AVIN, VIN) ...................... 2.7V to 5.5V

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

Enable Voltage (VEN, VEN1, VEN2)............................ 0V to VIN

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

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

Thermal Resistance

2.5x2.8mm MLF-17 (θJA) ...................................70°C/W

Electrical Characteristics

(5)

DC/DC Converter

VIN = PVIN = AVIN = VEN = 3.6V; VDAC = 0.6V; VEN1 = VEN2 = 0V; L = 4.7µH; COUT = 1µF; TA = 25°C, bold values indicate

–40°C< TJ < +125°C, unless noted.

LDO1/LDO2

VIN = VEN1 = VEN2 = 3.6V; COUTLDO1 = 2.2µF; VEN = 0V; COUTLDO2 = 1µF; IOUT = 100µA; TA = 25°C, bold values indicate

–40°C< TJ < +125°C, unless noted.

Parameter

Condition

Min

Typ

Max

Units

MIC2807

Supply Voltage Range

2.7

5.5

Total Quiescent Current

VEN = VEN1 = VEN2 = 3.6V

VDAC = 0.6V (DC/DC: not switching)

480

µA

Logic Low

0.4

Enable Pin Threshold

Logic High

1.3

Enable Pin Hysteresis

Enable Pin Input Current

0.01

µA

Under-Voltage

Lockout Threshold

(turn-on)

2.6

2.7

UVLO Hysteresis

Shutdown Temperature

160

ºC

Shutdown Temperature

Hysteresis

ºC

Total Shutdown Current

VEN = VEN1 = VEN2 = 0V

µA

DC/DC Converter [VEN1 = VEN2 = 0V]

Maximum Duty Cycle

100

Bypass Quiescent

Current

VDAC = 1.3V

490

650

µA

Quiescent Current

VDAC = 0.6V (regulator on, not switching)

360

450

µA

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 < 400mA

0.2

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

Frequency

1.8

2.2

MHz

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