MIC2800-ADJSLASH1.2SLASH3.3YML datasheet(4/20 Pages) MICREL

4 / 20 page

Micrel, Inc.

MIC2800

September 2007

M9999-090507-C

Absolute Maximum Ratings

(1)

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

Enable Input Voltage (VEN)................................... 0V to +6V

LOWQ Mode (VLOWQ). .......................................... 0V to +6V

Power Dissipation, Internally Limited

(3)

Lead Temperature (soldering, 10 sec.)...................... 260°C

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

EDS Rating

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

Operating Ratings

(2)

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

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

LOWQ Mode (VLOWQ). ............................................ 0V to VIN

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

Junction Thermal Resistance

MLF-16 (θJA)......................................................45°C/W

Electrical Characteristics

(5)

VIN = EN1 = EN2 = LOWQ = VOUT

(6) + 1V; COUTDC/DC = 2.2µF, COUT1 = COUT2 = 2.2µF; IOUTDC/DC = 100mA;

IOUTLDO1 = IOUTLDO2 = 100µA; TJ = 25°C, bold values indicate –40°C < TJ < +125°C; unless noted.

Parameter

Conditions

Min

Typ

Max

Units

UVLO Threshold

Rising input voltage during turn-on

2.45

2.55

2.65

UVLO Hysteresis

100

Ground Pin Current

VFB = GND (not switching);

LDO2 Only (EN1 = LOW)

800

1100

µA

Ground Pin Current in

Shutdown

All EN = 0V

0.2

µA

Ground Pin Current

(LOWQ mode)

IDC/DC < ILDO1 < ILDO2 < 10mA

DC/DC and LDO1 OFF; ILDO2 < 10mA

µA

Over-temperature Shutdown

160

°C

Over-temperature Shutdown

Hysteresis

°C

Enable Inputs (EN1; EN2;

/LOWQ )

Logic Low

0.2

Enable Input Voltage

Logic High

1.0

VIL < 0.2V

0.1

µA

Enable Input Current

VIH > 1.0V

0.1

µA

Turn-on Time (See Timing Diagram)

Turn-on Time

(LDO1 and LDO2)

EN2=VIN

EN1=VIN

240

120

500

350

µs

Turn-on Time (DC/DC)

EN2=VIN; ILOAD = 300mA; CBYP = 0.1µF

350

µs

POR Output

Low Threshold, % of nominal (VDC/DC or VLDO1 or VLDO2)

(Flag ON)

VTH

High Threshold, % of nominal (VDC/DC AND VLDO1 AND

VLDO2) (Flag OFF)

VOL

POR Output Logic Low Voltage; IL = 250µA

100

IPOR

Flag Leakage Current, Flag OFF

0.01

µA

SET INPUT

SET Pin Current Source

VSET = 0V

0.75

1.25

1.75

µA

SET Pin Threshold Voltage

POR = High

1.25

MIC2800-ADJ/1.2/3.3YML Datasheet(PDF) 4 Page - Micrel Semiconductor

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