MAX1706 datasheet(4/20 Pages) MAXIM

Part #	MAX1706

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

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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

Step-Up DC-DC Converters with Linear Regulator

4

_______________________________________________________________________________________

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 = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

ELECTRICAL CHARACTERISTICS

(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

MIN

TYP

MAX

UNITS

Minimum CLK/SEL Pulse

Internal Oscillator Frequency

260

300

340

kHz

200

ns

Maximum CLK/SEL

Rise/Fall Time

100

ns

CONDITIONS

CLK/SEL = OUT

Supply Current in

Low-Power Mode

IOUT

190

µA

CLK/SEL = 0V, FB = FBLDO = 1.5V, no load

Supply Current in Shutdown

IOUT

20

µA

ONA = 0V, ONB = OUT, measure IOUT

OUT Voltage in Track Mode

VLDO +

0.2

0.4

V

TRACK = OUT, VLDO > 2.3V

250

570

MAX1706

CLK/SEL = OUT

CLK/SEL = 0V

MAX1705

CLK/SEL = OUT

CLK/SEL = 0V

0.28

MAX1705

Switch On-Resistance

0.45

Ω

N-channel, ILX = 100mA

550

950

N-Channel MOSFET

Current Limit

ILIM

1000

1700

mA

CLK/SEL = OUT

250

570

0.50

CLK/SEL = 0V

P-channel, ILX = 100mA

PARAMETER

SYMBOL

MIN

TYP

MAX

P-Channel Synchronous-

Rectifier Turn-Off Current

UNITS

CONDITIONS

20

120

mA

Start-Up to Normal Mode

Transition Voltage

2.0

2.3

V

FB Regulation Voltage

1.215

1.251

V

CLK/SEL = OUT

Reference Output Voltage

1.235

1.265

V

IREF = 0µA

Oscillator Maximum Duty Cycle

80

86

90

%

External Oscillator

Synchronization Range

200

400

kHz

Supply Current in

Low-Noise Mode

IOUT

360

µA

CLK/SEL = OUT, VFB = VFBLDO = 1.5V,

no load

DC-DC CONVERTER

REFERENCE

DC-DC CONVERTER

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