MIC2602 datasheet(3/13 Pages) MICREL

3 / 13 page

Micrel, Inc.

MIC2601/2

September 2009

M9999-090909-A

Absolute Maximum Ratings

(1)

Supply Voltage (VIN).......................................................22V

Switch Voltage (VSW)....................................... –0.3V to 40V

Enable Voltage (VEN)......................................... –0.3V to VIN

FB Voltage (VFB)...............................................................6V

Ambient Storage Temperature (Ts)...........–65°C to +150°C

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

ESD Rating..................................................................... 2kV

Operating Ratings

(2)

Supply Voltage (VIN).......................................... 4.5V to 20V

Enable Voltage (VEN)............................................ 0V to 20V

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

Junction Thermal Resistance

2mm x 2mm MLF-8 (

θJA) ...................................90°C/W

2mm x 2mm MLF-8 (

θJC) ...................................45°C/W

Electrical Characteristics

(3)

TA = 25°C, VIN = VEN = 12V; unless otherwise noted. Bold values indicate –40°C ≤ TJ ≤ +125°C.

Symbol

Parameter

Condition

Min

Typ

Max

Units

VIN

Input Voltage Range

4.5

VDD

Internal Regulated Voltage

Note 4

6.0

VULVO

Under-voltage Lockout

For VDD

1.8

2.1

2.4

Quiescent Current

VFB = 2V (not switching)

4.2

ISD

Shutdown Current

VEN = 0V, Note 5

0.08

µA

(±2%)

1.235

1.26

1.285

VFB

Feedback Voltage

(±3%) (over temperature)

1.222

1.298

IFB

Feedback Input Current

VFB = 1.25V

–550

Line Regulation

8V ≤ VIN ≤ 14V, VOUT = 18V

0.04

Load Regulation

5mA ≤ IOUT ≤ 400mA, VOUT = 18V, Note 6

0.1

SSR

Internal Soft Start Resistor

kΩ

DMAX

Maximum Duty Cycle

MIC2601

MIC2602

ISW

Switch Current Limit

Note 6

1.2

1.7

VSW

Switch Saturation Voltage

ISW = 1.2A

500

ISW

Switch Leakage Current

VEN = 0V, VSW = 18V

0.01

µA

VEN

Enable Threshold

Turn ON

Turn OFF

1.5

0.3

IEN

Enable Pin Current

VEN = 12V

18.5

µA

Oscillator Frequency (MIC2601)

1.02

1.12

1.38

MHz

fSW

Oscillator Frequency (MIC2602)

1.7

1.92

2.3

MHz

VOVP

Output Over-voltage Protection

15% Over programmed VOUT (rising)

150

°C

Over-temperature Threshold

Shutdown

Hysteresis

°C

Notes:

1. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating

the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(Max), the

junction-to-ambient thermal resistance, θ JA, and the ambient temperature, TA. The maximum allowable power dissipation will result in excessive die

temperature, and the regulator will go into thermal shutdown.

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

3. Specification for packaged product only.

4. Connect VDD pin to VIN pin when VIN ≤ 7V.

5. ISD = IVIN.

6. Guaranteed by design.

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