MIC5325 datasheet(3/11 Pages) MICREL

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Micrel, Inc.

MIC5325

March 2011

M9999-030811-C

Absolute Maximum Ratings

(1)

Supply Voltage (VIN)............................................ 0V to VBIAS

Bias Voltage (VBIAS)................................................ 0V to 6V

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

Power Dissipation (PD)........................... Internally Limited

(3)

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

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

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

ESD Rating

(4).................................................................. 2kV

Operating Ratings

(2)

Supply Voltage (VIN)......................................... 1.7V to VBIAS

Bias Voltage (VBIAS).......................................... 2.5V to 5.5V

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

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

Junction Thermal Resistance

2x2 Thin MLF-6 (

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

Electrical Characteristics

(5)

VBIAS = 3.6V or VIN (whichever is greater); VIN = VOUT + 1V; COUT = 1µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C,

unless noted.

Parameter

Condition

Min.

Typ.

Max.

Units

Output Voltage Accuracy

Variation from nominal VOUT

–2.0

+2.0

VBIAS Line Regulation

VBIAS = VIN to 5.5V; VIN = VOUT + 1V

0.03

0.6

VIN Line Regulation

VBIAS = 5.5V; VIN = VOUT + 1V to 5.5V

0.02

0.6

Load Regulation

IOUT = 100µA to 400mA

0.3

VIN Dropout Voltage

IOUT = 400mA

110

250

Ground Pin Current

IOUT = 100µA to 400mA; VIN = VEN; VBIAS = 5.5V

µA

Ground Pin Current in Shutdown

VEN ≤ 0.2V

0.01

µA

Ripple Rejection

f = up to 1kHz; COUT = 1µF; no CBYP

f = up to 1kHz; COUT = 1µF; CBYP = 10nF

f = 1kHz – 20kHz; COUT = 1µ F; CBYP = 10nF

Current Limit

VOUT = 0V

450

680

Output Voltage Noise

COUT = 1µF; CBYP = 10nF; 10Hz to 100kHz

µVRMS

Enable Inputs (EN)

Logic Low

0.2

Enable Input Voltage

Logic High

1.2

VIL ≤ 0.2V

0.01

µA

Enable Input Current

VIH ≥ 1V

0.02

µA

Turn-On Time

COUT = 1µF; CBYP = 10nF

150

500

µs

Notes:

1. Exceeding the absolute maximum rating may damage the device.

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

3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA. Exceeding the maximum allowable power

dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.

4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.

5. Specification for packaged product only.

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