1- to 3-Cell, High-Current, Low-Noise,

Step-Up DC-DC Converters with Linear Regulator

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5

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

LBN, LBP Common-Mode

Input Range

0.5

1.5

V

CONDITIONS

LBN = 0.5V and 1.5V (at least one input must

be within this range)

LBO High Leakage

1

µA

LBO = OUT = 5V

Input Low Level

V

Internal Oscillator Frequency

260

340

kHz

CLK/SEL = OUT

External Oscillator

Synchronization Range

200

400

kHz

Note 1: Once the output is in regulation, the MAX1705/MAX1706 operate down to a 0.7V input voltage.

Note 4: Specifications to -40°C to are guaranteed by design, not production tested.

Input High Level

V

LBN, LBP Offset

-5

5

mV

LBP falling

FBLDO Regulation Voltage

1.233

1.268

V

Short-Circuit Current Limit

220

600

mA

FBLDO = LDO = GND

FBLDO Input Current

0.01

50

nA

Dropout Resistance

1.2

Ω

LINEAR REGULATOR

CONTROL INPUTS

LOW-BATTERY COMPARATOR