MIC2164_10 datasheet(4/39 Pages) MICREL

4 / 39 page

Micrel, Inc.

MIC2164/-2/-3/C

September 2010

M9999-091310-D

Absolute Maximum Ratings

(1)

IN, FB, EN to GND ..........................................

−0.3V to +6V

BST to LX .......................................................

−-0.3V to +6V

BST to GND ..................................................

−0.3V to +37V

DH to LX............................................

−0.3V to (VBST + 0.3V)

DL, COMP to GND..............................

−0.3V to (VIN + 0.3V)

HSD to GND....................................................

−0.3V to 31V

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

−0.3V to +0.3V

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

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

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

Operating Ratings

(2)

Input Voltage (VIN)............................................ 3.0V to 5.5V

Supply Voltage (VHSD) ....................................... 3.0V to 28V

Operating Temperature Range .................

−40°C to +125°C

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

Junction Thermal Resistance

MSOP (

θJA) ..................................................130.5°C/W

Continuous Power Dissipation (TA = 70°C)..............421mW

(derate 5.6mW/°C above 70°C)

Electrical Characteristics

(4)

VBST − VLX = 5V; TA = +25°C, unless noted. Bold values indicate −40°C ≤ TJ ≤ +125°C.

Parameter

Condition

Min.

Typ.

Max.

Units

General

Operating Input Voltage (VIN)

(5)

3.0

5.5

HSD Voltage Range (VHSD)

3.0

Quiescent Supply Current

(VFB = 1.5V, output switching but excluding

external MOSFET gate current)

1.4

3.0

Standby Supply Current

(6)

VIN = VBST = 5.5V, VHSD = 28, LX = unconnected,

EN = GND

0.8

Under-Voltage Lockout Trip Level

2.4

2.7

UVLO Hysteresis

DC-DC Controller

Output-Voltage Adjust Range

(VOUT)

0.8

5.5

Error Amplifier

0°C ≤ TJ ≤ 85°C

-1

−40°C ≤ TJ ≤ 125°C

-2

FB Regulation Voltage

TJ = 25°C (MIC2164C)

-3

FB Input Leakage Current

500

VFB = 0.8V

103

130

162

VFB = 0V

VFB = 0.8V (MIC2164C)

130

170

Current-Limit Threshold

VFB = 0V (MIC2164C)

Soft-Start

Soft-Start Period

Oscillator

Switching Frequency

(8)

MIC2164C

MIC2164

MIC2164-2

MIC2164-3

0.202

0.225

0.45

0.75

0.27

0.3

0.6

0.338

0.375

0.75

1.25

MHz

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