MIC2341R datasheet(9/32 Pages) MICREL

9 / 32 page

Micrel, Inc.

MIC2341/2341R

October 2007

M9999-102507-A

(408) 944-0800

Absolute Maximum Ratings

(1)

12VIN[A/B], 12VSENSE[A/B], 12VGATE[A/B],

12VOUT[A/B] .................................................... 14V

3VIN[A/B], 3VSENSE[A/B], 3VGATE[A/B],

3VOUT[A/B], VSTBY[A/B], VAUX[A/B] ...................... 7V

Digital Inputs

ON[A/B], AUXEN[A/B], /CRSW[A/B],

/FORCE_ON[A/B] .................. –0.5V (min) to 3.6V (max)

CFILTER[A/B], RFILTER[A&B]................................... 7V

Output Current

/PWRGD[A/B], /DLY_PWRGD[A/B]

/FAULT_MAIN[A/B], SYSPWRGD, /INT,

/FAULT_AUX[A/B]

10mA

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

Lead Temperature (Soldering)

Lead-Free Package (-xYTQ)

IR Reflow, Peak .................................. 260°C +0°C/–5°C

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

ESD Rating

(3)

Human Body Model.............................................2kV

Machine Model................................................. 200V

Operating Ratings

(2)

Supply Voltages

12VIN[A/B] ........................................ 11.0V to 13.0V

3VIN[A/B] .............................................. 3.0V to 3.6V

VSTBY[A/B] .......................................... 3.0V to 3.6V

Ambient Temperature (TA) ........................0°C to + 70°C

Junction Temperature (TJ)..................................... 125°C

Package Thermal Resistance

TQFP

(θJA) .................................................76.8°C/W

DC Electrical Characteristics

(4)

12VIN[A/B] = 12V, 3VIN[A/B] = 3.3V, VSTBY[A/B] = 3.3V, TA = 25°C, unless otherwise noted. Bold values specifications applies

over the full operating temperature range from 0 °C < TA < +70 °C.

Symbol

Parameter

Condition

Min

Typ

Max

Units

Power Control and Logic Sections

ICC12

ICC3.3

ICCSTBY

Supply Current

/CRSW[A/B] = LOW

/FORCE_ON[A/B] = HIGH

AUX_EN[A/B], ON[A/B] = [L,H], [L,L]

1.8

0.6

2.8

2.5

VUVLO(12V)

VUVLO(3V)

VUVLO(STBY)

Undervoltage Lockout Thresholds

12VIN[A/B]

3VIN[A/B]

VSTBY[A/B]

12VIN[A/B] increasing

3VIN[A/B] increasing

VSTBY[A/B] increasing

2.2

2.8

2.5

2.9

2.75

3.0

VHYSSTBY

Undervoltage Lockout Hysteresis

VSTBY[A/B]

VHYSUV

Undervoltage Lockout Hysteresis

12VIN[A/B], 3VIN[A/B]

180

VUVTH(12V)

VUVTH(3V)

Power-Good Undervoltage

Thresholds

12VOUT[A/B]

3VOUT[A/B]

12VOUT[A/B] decreasing

3VOUT[A/B] decreasing

10.2

2.7

10.5

2.8

10.8

2.9

VUVTH(VAUX)

Power-Good Undervoltage

Threshold

VAUX[A/B]

VAUX[A/B] decreasing

IAUX = 600mA

2.7

2.8

2.9

VHYSPG

Power-Good Detect Hysteresis

VGATE(12V)

12VGATE[A/B] Voltage

1.5

IGATE(12VSINK)

12VGATE[A/B] Pull-down Current

Start Cycle

µA

IGATE(12VPULLUP)

12VGATE[A/B] Pull-up Current

(Fault Off)

Any fault condition

(VDD –VGATE) = 2.5V

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