MAX1705C データシートの表示（PDF） - Maxim Integrated

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MAX1705C

1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator

Maxim Integrated 

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

Step-Up DC-DC Converters with Linear Regulator

ELECTRICAL CHARACTERISTICS (continued)

(VOUT = VPOUT = VLBP = 3.6V, CLK/SEL = FB = LBN = LBO = ONA = ONB = TRACK = GND, REF = open (bypassed with 0.22µF),

LX = open, TA = -40°C to +85°C, unless otherwise noted, Note 4.)

PARAMETER

SYMBOL

LINEAR REGULATOR

FBLDO Regulation Voltage

FBLDO Input Current

Short-Circuit Current Limit

Dropout Resistance

LOW-BATTERY COMPARATOR

LBN, LBP Offset

LBN, LBP Common-Mode

Input Range

LBO High Leakage

CONTROL INPUTS

Input Low Level

Input High Level

Internal Oscillator Frequency

External Oscillator

Synchronization Range

CONDITIONS

FBLDO = LDO, ILOAD = 1mA

VFBLDO = 1.5V

FBLDO = LDO = GND

VFBLDO = 1V, ILDO = 200mA

LBP falling

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

be within this range)

LBO = OUT = 5V

1.2V < VOUT < 5.5V, ONA, ONB (Note 2)

VOUT = 2.5V, CLK/SEL, TRACK

1.2V < VOUT < 5.5V, ONA, ONB (Note 2)

VOUT = 5.5V, CLK/SEL, TRACK

CLK/SEL = OUT

MIN TYP MAX

1.233

220

0.01

1.268

50

600

1.2

-5

+5

0.5

1.5

1

0.85VOUT

0.85VOUT

260

200

0.15VOUT

0.15VOUT

340

400

UNITS

V

nA

mA

Ω

mV

V

µA

V

V

kHz

kHz

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

Note 2: The device is in startup mode when VOUT is below this value (see Low-Voltage Startup Oscillator section).

Note 3: ONA and ONB inputs have a hysteresis of approximately 0.15VOUT.

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

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