MIC45205 datasheet(4/31 Pages) MICREL

4 / 31 page

Micrel, Inc.

MIC45205

Absolute Maximum Ratings

(2)

VPVIN, VVIN to PGND ....................................... −0.3V to +30V

VPVDD, V5VDD, VANODE to PGND ........................ −0.3V to +6V

VSW, VFREQ, VILIM, VEN to PGND ............ −0.3V to (VIN +0.3V)

VBST to VSW ........................................................ −0.3V to 6V

VBST to PGND .................................................. −0.3V to 36V

VPG to PGND .................................. −0.3V to (5VDD + 0.3V)

VFB, VRIB to PGND .......................... −0.3V to (5VDD + 0.3V)

PGND to GND ..............................................

−0.3V to +0.3V

Junction Temperature .............................................. +150°C

Storage Temperature (TS)......................... −65°C to +150°C

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

Operating Ratings

(3)

Supply Voltage (VPVIN, VVIN) .............................. 4.5V to 26V

Output Current ................................................................. 6A

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

Power Good (VPG) ............................................. 0V to 5VDD

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

Junction Thermal Resistance

(4)

8mm × 8mm × 3mm QFN-52 (

JA) ................ 21.7°C/W

8mm × 8mm × 3mm QFN-52 (

JC) .................. 5.0°C/W

Electrical Characteristics

(5)

VIN = VEN = 12V, VOUT = 3.3V, VBST − VSW = 5V, TJ = +25ºC. Bold values indicate −40ºC < TJ < +125ºC, unless otherwise noted.

Parameter

Condition

Min.

Typ.

Max.

Units

Power Supply Input

Input Voltage Range (VPVIN, VIN)

4.5

Quiescent Supply Current

(MIC45205-1)

VFB = 1.5V

0.35

0.75

Quiescent Supply Current

(MIC45205-2)

VFB = 1.5V

2.1

Operating Current

VPVIN = VIN = 12V, VOUT = 1.8V, IOUT = 0A

fSW = 600kHz (MIC45205-2)

Shutdown Supply Current

SW = unconnected, VEN = 0V

0.1

µA

5VDD Output

5VDD Output Voltage

VIN = 7V to 26V, I5VDD = 10mA

4.8

5.1

5.4

5VDD UVLO Threshold

V5VDD rising

3.8

4.2

4.6

5VDD UVLO Hysteresis

V5VDD falling

400

LDO Load Regulation

I5VDD = 0 to 40mA

0.6

3.6

Reference

Feedback Reference Voltage

TJ = 25°C

0.792

0.8

0.808

−40°C

≤ TJ ≤ 125°C

0.784

0.8

0.816

FB Bias Current

VFB = 0.8V

500

Notes:

Exceeding the absolute maximum rating may damage the device.

The device is not guaranteed to function outside operating range.

JA and θJC were measured using the MIC45205 evaluation board.

Specification for packaged product only.

April 15, 2014

Revision 1.0

MIC45205 Datasheet(PDF) 4 Page - Micrel Semiconductor

MIC45205 Datasheet(HTML) 4 Page - Micrel Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Datasheet Download

Link URL