MIC2874YCS datasheet(3/22 Pages) MICREL

3 / 22 page

Micrel, Inc.

MIC2874

Absolute Maximum Ratings

(2)

Input Voltage (VIN) ........................................ −0.3V to +6.0V

General I/O Voltage (VFEN) ................................ −0.3V to VIN

VOUT and VLED Voltage.................................. −0.3V to +6.0V

Single-Wire I/O Voltage (VDC) ........................... −0.3V to VIN

VSW Voltage .................................................. −0.3V to +6.0V

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

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

Storage Temperature (Ts) ......................... −40°C to +150°C

ESD Rating

(5)

HBM ......................................................................... 2kV

MM .........................................................................200V

Operating Ratings

(3)

Input Voltage (VIN)........................................ +2.7V to +5.5V

Enable Input Voltage (VFEN) ................................... 0V to VIN

Single-Wire I/O Voltage (VDC) ................................ 0V to VIN

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

Operating Ambient Temperature (TA) ......... −40°C to +85°C

Package Thermal Resistance

1.30mm x 1.30mm WLCSP (

JA)

(4) ....................84°C/W

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

(4)

Electrical Characteristics

(6)

VIN = 3.6V; L = 0.47µH; COUT = 4.7µF, IOUT = 100mA, TA = 25°C, bold values indicate –40°C

≤ TJ ≤ +125°C, unless otherwise noted.

Symbol

Parameter

Condition

Min.

Typ.

Max.

Units

Power Supply

VIN

Supply Voltage Range

2.7

5.5

VUVLO

UVLO Threshold (rising)

2.41

2.53

2.68

UVLO Hysteresis

180

ISTB

Standby Current

VDC = 3.6V, VFEN = 0V, boost regulator and LED

current driver both OFF.

150

185

220

µA

ISD

Shutdown Current

VDC = 0V

µA

DMAX

Maximum Duty Cycle

DMIN

Minimum Duty Cycle

6.4

ISW

Switch Current Limit

VIN = VOUT = 2.7V

4.1

PMOS

Switch On-Resistance

ISW = 100mA

125

Ω

NMOS

ISW = 100mA

ISW_LK

Switch Leakage Current

VDC = 0V, VSW = 5.5V

0.01

µA

FSW

Oscillator Frequency

3.6

4.4

MHz

Notes:

Exceeding the absolute maximum rating may damage the device.

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

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.

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

Ω in series with 100pF.

Specification for packaged product only.

August 26, 2014

Revision 1.0

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