SP6641AEK datasheet(2/13 Pages) SIPEX

2 / 13 page

Rev. 5/26/05,

*Patent Pending

SP6641A/6641B 500mA Alkaline DC/DC Boost Regulator in SOT-23

ABSOLUTE MAXIMUM RATINGS

These are stress ratings only and functional

operation of the device at these ratings or any other

above those indicated in the operation sections of

the specifications below is not implied. Exposure to

absolute maximum rating conditions for extended

periods of time may affect reliability.

ELECTRICAL SPECIFICATIONS

VBATT = VSHDN = 1.3V, ILOAD = 0mA, -40°C <TA < +85°C, VOUT = +3.3V or +5.0V preset, typical values at 27°C

unless otherwise noted.

LX, VOUT, SHDN, VBATT to GND pin ....... -0.3 to 6.0V

LX Current .......................................................... 1.5A

Reverse VBATT Current ................................... 220mA

Storage Temperature ........................ -65°C to 150°C

Operating Temperature ..................... -40°C to +85°C

Lead Temperature (Soldering, 10 sec) .......... 300 °C

PARAMETER

MIN

TYP

MAX

UNITS

CONDITIONS

Input Voltage Operating Range,

0.5

4.5

after startup

VBATT

Startup Voltage, VBATT

0.85

0.90

RLOAD=3kΩ, TA =27°C

1.00

RLOAD=3kΩ,-40°C <TA < +85°C

Output Voltage, VOUT

3.16

3.30

3.44

3.3V VOUT preset

4.80

5.00

5.20

5.0V VOUT preset

Quiescent Current into VOUT,10

µAVOUT=3.5V, 3.3V VOUT preset

IQ(OUT)

VOUT=5.5V, 5.0V VOUT preset

Quiescent Current into VBATT,

250

500

VOUT=3.5V, 3.3V VOUT preset

IQB

VOUT=5.5V, 5.0V VOUT preset

Shutdown Current into VOUT,1

500

VSHDN =0V

ISHDN

Shutdown Current into VBATT,20

100

VSHDN =0V

ISHDN

Inductor Current Limit

280

330

380

(SP6641A)

Inductor Current Limit

850

1000

1150

(SP6641B)

Output Current (SP6641AEK-3.3)

VBATT =1.3V

190

VBATT =2.6V

Output Current (SP6641BEK-3.3)

200

VBATT =1.3V

500

VBATT =2.6V

Output Current (SP6641AEK-5.0)

100

VBATT =2.0V

175

VBATT =3.3V

Output Current (SP6641BEK-5.0)

275

VBATT =2.0V

500

VBATT =3.3V

Minimum Off-Time Constant

1.50

V*µsTOFF ≥ KOFF / (VOUT – VIN)

KOFF

NMOS Switch Resistance

0.3

0.75

Ω

Inmos=100mA

SHDN Input Voltage

Vil

% of VBATT

Vih

% of VBATT

SHDN Input Current

100

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