MIC5315 datasheet(3/13 Pages) MICREL

3 / 13 page

Micrel, Inc.

MIC5315

July 2008

M9999-070208-A

Absolute Maximum Ratings

(1)

Main Input Voltage (VIN1, VIN2)..........................0V to VBIAS

Bias Supply Voltage (VBIAS)...............................0V to +6V

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

Voltage Select Input Voltage (V/VSC2) ...............0V to VBIAS

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

(3)

Lead Temperature (soldering, 3sec.)......................260°C

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

ESD Rating

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

Operating Ratings

(2)

Supply voltage (VIN1, VIN2)...........................+1.7V to VBIAS

Bias Supply Voltage (VBIAS) ........................ 2.5V to +5.5V

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

Voltage Select Input Voltage (V/VSC2)............... 0V to VBIAS

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

Junction Thermal Resistance

2mm x 2mm Thin MLF-10 (

θJA).............................80°C/W

Electrical Characteristics

(4)

VBIAS = 3.6V; VIN1= VIN2 = VOUT (Highest of two regulators) + 1V; CBIAS=COUT= 1.0µF, CBYP=0.01µF, IOUT = 100µA;

TJ = 25ºC, bold values indicate –40ºC to + 125ºC; unless noted.

Parameter

Condition

Min

Typ

Max

Units

Variation from nominal VOUT1 & VOUT2

–1.0

+1.0

Output Voltage Accuracy

Variation from nominal VOUT1 & VOUT2

–2.0

+2.0

VOUT2, V/VSC2 = Logic Low

-3.0

+3.0

Select Mode Output Voltage

Accuracy

VOUT2, V/VSC2 = Logic Low

-4.0

+4.0

VIN Line Regulation

VIN = VOUT +1V to 5.5V, VBIAS = 5.5V

0.02

0.3

%/V

VBIAS Line Regulation

VBIAS = 3.6V to 5.5V, VIN = VOUT +1V

0.02

0.3

%/V

Load Regulation

IOUT = 100µA to 300mA

0.4

1.0

Dropout Voltage

IOUT = 150mA

IOUT = 300mA

100

200

Ground Pin Current VIN1,VIN2

VEN1 = High; VEN2 = Low; IOUT1 = 100µA to 300mA

VEN1 = Low; VEN2 = High; IOUT2 = 100µA to 300mA

µA

Ground Pin Current VBIAS

IOUT1 = IOUT2 = 100µA to 300mA

µA

Ground Pin Current in

Shutdown

VEN ≤ 0.2V

0.01

1.0

µA

VIN Ripple Rejection

f = 1kHz; COUT = 1.0µF; CBYP = 0.01µF

f = 20kHz; COUT = 1.0µF; CBYP = 0.01µF

Current Limit

VOUT = 0V

350

550

Output Voltage Noise

COUT=1µF, CBYP=0.01µF, 10Hz to 100kHz

µVRMS

Enable

Logic Low

0.2

Enable Input Voltage

Logic High

1.2

VIL ≤ 0.2V

0.02

µA

Enable Input Current

VIH ≥ 1.2V

0.2

µA

Turn-on Time

COUT = 1µF; CBYP = 0.01µF

150

300

µs

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