MIC68401 datasheet(4/13 Pages) MICREL

Part #	MIC68401

Description	4A Sequencing LDO with Tracking and Ramp Control?

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Manufacturer	MICREL [Micrel Semiconductor]

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Micrel, Inc.

MIC68401

November 7, 2013

4

Revision 1.0

Absolute Maximum Ratings

(1)

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

Enable Input Voltage (VEN)....................−0.3V to VIN + 0.3V

POR (VPOR)........................................................−0.3V to 6V

RC ....................................................................... VIN + 0.3V

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

(3)

Junction Temperature .........................–

40°C ≤ T

J

≤ +125°C

Storage Temperature (TS)...................–

65°C ≤ T

J

≤ +150°C

ESD Rating

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

Operating Ratings

(2)

Supply voltage (VIN) ....................................... 1.65V to 5.5V

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

POR (VPOR)....................................................... 0V to + 5.5V

Ramp Control (VRC)............................................. 0V to 5.5V

Junction Temperature Range ............–

40°C ≤ T

J

≤ +125°C

Package Thermal Resistance

4mm × 4mm QFN-16 (

θ

JA) ................................ 30°C/W

Electrical Characteristics

(5)

TA = 25°C with VIN = VOUT + 1V; VEN = VIN; IOUT = 10mA; bold values indicate –

40°C ≤ TJ ≤ +125°C, unless noted.

Parameter

Conditions

Min.

Typ.

Max.

Units

Output Voltage Accuracy

10mA < IOUT < IL(MAX), VOUT

+ 1V ≤ VIN ≤ 5.5V

−2

+2

%

Feedback Voltage

Adjustable version only

0.49

0.50

0.51

V

Feedback Current

Adjustable version only

20

nA

Output Voltage Line Regulation

VIN = VOUT + 1V to 5.0V

0.06

0.5

%

Output Voltage Load Regulation

IL = 10mA to 3A

0.5

1

%

VIN – VO; Dropout Voltage

IL = 1.5A

IL = 3.0A

IL = 4.0A

300

360

400

500

800

mV

Ground Pin (GND) Current

IL = 10mA

IL = 1.5A

IL = 3.0A

IL = 4.0A

1.2

20

55

90

130

mA

Ground Pin (GND) Current in

Shutdown

VEN = <0.2V; VOUT = 0V

0.01

10

µA

Current Limit

VOUT = 0V; VIN = 3.0V

4.0

6.0

A

Start-Up Time

VEN = VIN; CRC = Open

35

150

µs

Enable Input

Enable Input Threshold

Regulator enable

Regulator shutdown

1

0.2

V

Enable Hysteresis

20

120

200

mV

Enable Input Current

VIL

≤ 0.2V (Regulator shutdown)

VIH

≥ 1V (Regulator enable)

0.02

3

µA

Notes:

1.

Exceeding the absolute maximum rating may damage the device.

2. The device is not guaranteed to function outside its operating rating.

3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = TJ(max) – TA

) / θJA. Exceeding the maximum

allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.

4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.

5. Specification for packaged product only.

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