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MIC2141BM5

Micropower Boost Converter

Micrel 

Micrel, Inc.

MIC2141

Absolute Maximum Ratings(1)

Supply Voltage (VIN) .......................................................18V

Switch Voltage (VSW)......................................................24V

Feedback Voltage (VFB) .................................................24V

Control Input Voltage (VC)(3) ............ VIN – 200mV ≤ VC ≤ 4V

ESD Rating(4).................................................................. 2kV

Operating Ratings(2)

Supply Voltage (VIN).......................................... 2.5V to 14V

Switch Voltage (VSW)............................................ 3V to 22V

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

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

Package Thermal Impedance

SOT23-5 (θJA) ..................................................220°C/W

Electrical Characteristics

VIN = 3.6V; VOUT = 5V; IOUT = 1mA; TJ = 25°C, bold values indicate –40°C< TA < +85°C, unless noted.

Parameter

Condition

Min

Typ

Input Voltage

2.5

Quiescent Current

Switch off, VIN = 3.6V

70

Comparator Hysteresis

10

Control Voltage Gain (VOUT/VC)

Controlled Output Voltage,

Note 3

2.5V ≤ VIN ≤ 12V, VOUT = 15V

VC = 0.8V; 2.5V ≤ VIN ≤ 4.2V

VC = 2.5V; 2.7V ≤ VIN ≤ 12V

VC = 3.4V; 3.6V ≤ VIN ≤ 12V

6

4.85

5

14.55

15

19.4

20

Load Regulation

Line Regulation

100µA ≤ IOUT ≤ 1mA, VOUT = 15V

2.5V ≤ VIN ≤ 12V; IOUT ≤ 1mA

0.25

0.05

Switch on Resistance

ISW = 100mA, VIN = 3.6V

4

ISW = 100mA, VIN = 12V

2.5

Oscillator Frequency

300

330

Oscillator Duty Cycle

15

18

Notes:

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

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

3. VC = 4V sets VOUT to 24V (absolute maximum level on VSW); VC must be ≤ VIN – 200mV.

4. Devices are ESD sensitive. Handling precautions recommended.

Max Units

14

V

100

µA

mV

5.15

V

15.45

V

20.6

V

1

%

0.2

%/V

Ω

Ω

360

kHz

%

December 2006

3

M9999-122006

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