MIC5167 datasheet(4/23 Pages) MICREL

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Micrel, Inc.

MIC5167

January 2012

M9999-012312-B

Absolute Maximum Ratings

(1,2)

PVIN to PGND.................................................... –0.3V to 6V

SVIN to PGND..................................................–0.3V to PVIN

VDDQ to PGND .................................................–0.3V to PVIN

VSW to PGND...................................................–0.3V to PVIN

VEN/DLY to PGND ..............................................–0.3V to PVIN

VPG to PGND ...................................................–0.3V to PVIN

PGND to SGND ............................................. –0.3V to 0.3V

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

Storage Temperature Range ....................–65°C to +150°C

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

Operating Ratings

(3)

Supply Voltage (PVIN,SVIN) .............................. 2.6V to 5.5V

Supply Voltage (VDDQ).......................................0.7V to PVIN

Power-Good (PG) Voltage (VPG)..........................0V to PVIN

Enable Input (VEN/DLY)...........................................0V to PVIN

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

Package Thermal Resistance

4mm x 4mm MLF

®-24 (θJC)................................14°C/W

4mm x 4mm MLF

®-24 (θJA)................................40°C/W

Electrical Characteristics

(4)

SVIN = PVIN = VEN/DLY = 3.3V, VFB = VTT = 0.6V, TA = 25°C, unless noted. Bold values indicate –40°C< TJ < +125°C.

Parameter

Condition

Min.

Typ.

Max.

Units

Power Input Supply

Input Voltage Range (PVIN)

2.6

5.5

Undervoltage Lockout (UVLO) Trip

Level

PVIN Rising

2.4

2.5

2.6

UVLO Hysteresis

280

Quiescent Supply Current

VFB = 0.9V (not switching)

0.85

1.3

Shutdown Current

VEN/DLY = 0V

µA

VTT Output

VTT Output Voltage

VDDQ =1.2V

0.588

0.6

0.612

Load Regulation

VFB =0.6V, IOUT = -6A to +6A

0.4

Line Regulation

VFB = 0.6V; VIN = 2.6 to 5.5V, ILOAD= 100mA

0.2

FB Pin Bias Current

VFB = 0.6V

Enable Control

EN/DLY Threshold Voltage

1.14

1.24

1.34

EN Hysteresis

EN/DLY Source Current

VEN/DLY = 0.5V; VIN = 2.9V and VIN = 5.5V

0.7

1.0

1.3

µA

Oscillator

Switching Frequency

IOUT = 0A

0.8

1.0

1.2

MHz

Maximum Duty Cycle

VFB ≤ 0.5V

100

Short-Current Protection

Sourcing Current Limit

VFB = 0.5V

6.5

Internal FETs

Top-MOSFET RDS(ON)

VFB = 0.5V, ISW = 1A

mΩ

Bottom-MOSFET RDS(ON)

VFB = 0.9V, ISW = -1A

mΩ

SW Leakage Current

PVIN = 5.5V, VSW = 5.5V, VEN = 0V

VIN Leakage Current

PVIN = 5.5V, VSW = 0V, VEN = 0V

µA

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