SP6649 datasheet(2/9 Pages) SIPEX

2 / 9 page

Rev:001 Date:11/20/03

SP6649 Ultra-low Quiescent Current, High Efficiency Boost DC-DC Regulator

PARAMETER

MIN

TYP

MAX

UNITS

CONDITIONS

Input Voltage Operating Range, VBATT

0.7

4.5

After Startup

Under Voltage Lock-out/UVLO

0.62

Start-up Input Voltage, VBATT

0.85

0.9

RLOAD = 3k

Output Voltage, VO

3.16

3.30

3.44

3.3V VO preset

Quiescent Current into VO, IQO

µA

VOUT = 3.3V, VFB = 1.5V, Toggle SHDN

Quiescent Current into VBATT, IQB

500

VOUT = 3.3V, VFB = 1.5V

Shutdown Current into VO, ISDO

500

VSHDN = 0V

Shutdown Current into VBATT, ISDB

200

500

VSHDN = 0V, VBATT = 2.6V

Efficiency, RLIM = 4.0K

VBATT = 1.3V, IOUT = 50mA

VBATT = 2.6V, IOUT = 100mA

Efficiency, RLIM = 1.87K

VBATT = 1.3V, IOUT = 100mA

VBATT = 2.6V, IOUT = 200mA

Inductor Current Limit, IPK

1.0

1.2

1.4

RLIM = 1.17k , I PK = 1400/RLIM

250

VBATT = 1.3V, RLIM = 1.17k

Output Current

700

VBATT = 2.6V, RLIM = 1.17k

150

VBATT = 1.3V, RLIM = 1.87k

400

VBATT = 2.6V, RLIM = 1.87k

Minimum Off-Time Constant KOFF

1.1

V*µs

tOFF K OFF / (VOUT- VBATT)

Maximum On-Time Constant KON

3.3

V*µs

tON K ON / VBATT

NMOS Switch Resistance

0.30

0.6

INMOS = 100mA

PMOS Switch Resistance

0.30

0.6

IPMOS = 100mA

FB Set Voltage, VFB

1.20

1.25

1.30

External feedback

FB Input Current

100

VFB =1.3V

LBI Falling Trip Voltage

0.594

0.625

0.656

LBI Hysteresis

Low Output Voltage for LBON, VOL

0.4

VBATT = 1.3V, Isink = 1mA

Leakage current for LBON

500

VBATT = 1.3V, VLBON = 3.3V

SHDN Input Voltage

VIL

0.25

VBATT = 1.3V

VIH

1.0

VBATT = 1.3V

VIL

0.5

VBATT = 2.6V

VIH

2.0

VBATT = 2.6V

SHDN Input Current

100

SPECIFICATIONS

VBATT=VSHDN = 1.3V, VFB=0V, ILOAD = 0mA, TAMB= -40°C to +85°C, VOUT = +3.3V, typical values at 27°C unless otherwise

noted.

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.

LX, Vo, V

BATT , LBON, FB to GND pin ................................. -0.3 to 6.0V

SHDN, LBI ............................................................ -0.3V to V

BATT +0.5V

Vo, GND, LX Current .................................................................... 1.3A

Reverse V

BATT Current ............................................................... 220mA

Forward V

BATT Current ............................................................... 500mA

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

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

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

ESD Rating ........................................................................... 2kV HBM

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