Micrel, Inc.

MIC5501/2/3/4

April 20, 2015

4

Revision 2.3

Absolute Maximum Ratings

(5)

Supply Voltage (VIN) .......................................... –0.3V to 6V

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

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

(7)

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

Junction Temperature (TJ) ........................–40°C to +150°C

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

ESD Rating

(8).................................................................. 3kV

Operating Ratings

(6)

Supply Voltage (VIN)......................................... 2.5V to 5.5V

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

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

Junction Thermal Resistance

1mm × 1mm Thin DFN-4 (

θ

JA) ......................... 250°C/W

5-pin SOT23 (

θ

JA) ............................................ 253°C/W

Electrical Characteristics

(9)

VIN = VEN = VOUT + 1V; CIN = 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

%

Variation from nominal VOUT; –40°C to +125°C

–3.0

+3.0

%

Line Regulation

VIN = VOUT +1V to 5.5V; IOUT = 100µA

0.02

0.3

%/V

Load Regulation

(10)

IOUT = 100µA to 300mA

8

40

mV

Dropout Voltage

(11)

IOUT = 150mA

IOUT = 300mA

80

160

190

380

mV

mV

Ground Pin Current

(12)

IOUT = 0mA

IOUT = 300mA

38

42

55

65

µA

Ground Pin Current in Shutdown

VEN = 0V

0.05

1

µA

Ripple Rejection

f = 1kHz; COUT = 1µF

60

dB

Current Limit

VOUT = 0V

400

630

900

mA

Output Voltage Noise

COUT = 1µF, 10Hz to 100kHz

175

µVRMS

Auto-Discharge NFET

Resistance

MIC5502, MIC5504 Only; VEN = 0V; VIN = 3.6V;

IOUT = –3mA

25

Ω

Enable Input

Enable Pull-Down Resistor

For MIC5503 and MIC5504 use only

4

M

Ω

Enable Input Voltage

Logic Low

0.2

V

Logic High

1.2

V

Enable Input Current

MIC5501, MIC5502

VEN = 0V

0.01

1

µA

VEN = 5.5V

0.01

1

µA

Enable Input Current

MIC5503, MIC5504

VEN = 0V

0.01

1

µA

VEN = 5.5V

1.4

2

µA

Turn-On Time

COUT = 1µF; IOUT = 150mA

50

125

µs

Notes:

5.

Exceeding the absolute maximum rating may damage the device.

6.

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

7.

The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) – TA) /

θ

JA. Exceeding the maximum allowable power

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

8.

Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5k

Ω in series with 100pF.

9.

Specification for packaged product only.

10. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects are

covered by the thermal regulation specification.

11. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V

differential. For outputs below 2.5V, dropout voltage is the input-to-output differential with the minimum input voltage 2.5V.

12. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin

current.