MIC2810-4LSYML datasheet(4/18 Pages) MICREL

4 / 18 page

Micrel, Inc.

MIC2810

February 2008

M9999-022008-C

Absolute Maximum Ratings(1)

Supply Voltage (VIN, VIN1, VIN2)............................... 0V to 6V

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

Power Dissipation .................................. Internally Limited

(3)

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

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

ESD Rating

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

Operating Ratings(2)

Supply Voltage (VIN, VIN2)................................. 2.7V to 5.5V

Supply Voltage (VIN1)...................................... 1.65V to 5.5V

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

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

Junction Thermal Resistance

MLF-16 (θJA) ......................................................56°C/W

Electrical Characteristics(5)

VIN = VIN1 = VIN2 = EN1 = EN2 = EN = /LOWQ = VOUT

(6) + 1V; C

OUTDC/DC = 2.2µF, CLDO1 = CLDO2 = 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);

LDO1 or LDO2 (EN = GND; EN1 or EN2 = GND)

800

1100

µA

Ground Pin Current in

Shutdown

EN = EN1 = EN2 = 0V

0.2

µA

Ground Pin Current

(LOWQ

® mode)

IDC/DC < ILDO1 < ILDO2 < 10mA (/LOWQ = GND)

LDO1 or LDO2 (EN = GND; EN1 or EN2 = GND);

IOUT < 10mA (/LOWQ = GND)

µA

Over-temperature Shutdown

160

°C

Over-temperature Shutdown

Hysteresis

°C

Enable Inputs (EN; 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

(LDO1 and LDO2)

240

500

µs

Turn-on Time (DC/DC)

(/LOWQ = VIN; ILOAD = 300mA); (/LOWQ = GND; ILOAD =

10mA)

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

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