800mA, Low-Noise, Step-Up DC-DC Converter

with 500mA Linear Regulator

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

ONA, ONB, ONL, TRACK, OUT, INL to GND..............-0.3V, +6V

PGND to GND.....................................................................±0.3V

LX to GND ...............................................-0.3V to (POUT + 0.3V)

OUTL to GND ..............................................-0.3V to (INL + 0.3V)

CLK/SEL, REF, FB, FBL, ISET, POUT

to GND...................................................-0.3V to (OUT + 0.3V)

OUTL Short Circuit .....................................................Continuous

16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW

16-Pin TSSOP-EP (derate 19mW/°C above +70°C) ....1500mW

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

Junction Temperature ......................................................+150°C

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

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DC-DC CONVERTER

Input Voltage Range

(Note 1)

0.7

5.5

V

INL Voltage Range

(Note 1)

2.3

5.5

V

Minimum Startup Voltage

°C, Figure 2

0.9

1.1

V

Temperature Coefficient of

Startup Voltage

-2

mV/

°C

FB Regulation Voltage

1.215

1.250

1.275

V

FB Input Leakage Current

0.01

100

nA

Output Voltage Adjust Range

2.5

5.5

V

Load Regulation

-1

%

OUT Voltage in Track Mode

+ 0.4

+ 0.5

+ 0.6

V

Frequency in Startup Mode

125

1000

kHz

Startup to Normal Mode

Transition Voltage

Rising edge only (Note 2)

2.00

2.15

2.30

V

ISET Input Leakage Current

0.01

50

nA

Supply Current in Normal Mode

(Note 3)

CLK/SEL = ONL = GND, no load

100

200

µA

130

200

µA

Supply Current in Low-Noise

PWM Mode (Note 3)

CLK/SEL = OUT,

no load

FB = GND (LX switching)

2.5

mA

Supply Current in Shutdown

ONA = ONL = GND, ONB = OUT

1

10

µA