Rainbow-electronics MAX1703 Bedienungsanleitung PDF herunterladen (Seite 3)

MAX1703

1-Cell to 3-Cell, High-Power (1.5A),

Low-Noise, Step-Up DC-DC Converter

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(CLK/SEL = AIN = ON = POKIN = FB = PGND = GND, OUT = POUT, LXP = LXN, V

OUT

= 5.3V (Note 1), T

= 0°C to +85°C, unless

otherwise noted. Typical values are at T

= +25°C.)

CLK/SEL = OUT, V

= 0.5V

CLK/SEL = OUT, V

= 0.5V

ON, CLK/SEL

CLK/SEL, V

OUT

= 5.5V

CLK/SEL, V

OUT

= 2.5V

ON, 1.2V < V

OUT

< 5.5V (Note 7)

AIN

= 1.5V, V

= 5.5V

AIN

= 0.5V, I

= 100µA

2.5V < V

OUT

< 5.5V

-1µA < I

REF

< 50µA

10µA < I

< 100µA

AIN

= 1.5V

REF

= 0µA

= 20µA

CONDITIONS

kHz200 400External Clock Frequency Range

%80 86 90Oscillator Maximum Duty Cycle

kHz260 300 340Internal Oscillator Frequency

µA-1 0.01 1Logic Input Current

0.8V

OUT

Input High Voltage

0.2V

OUT

Input Low Voltage

0.2V

OUT

mV0.2 5REF Supply Rejection

mV515REF Load Regulation

V1.237 1.250 1.263Reference Output Voltage

µA0.01 1AO Output High Leakage

V0.1 0.4AO Output Low Voltage

mmho51016Transconductance

nA-30 30AIN Input Current

V1.237 1.25 1.263AIN Reference Voltage

UNITSMIN TYP MAXPARAMETER

ns100Maximum CLK/SEL Rise/Fall Time

ns200Minimum CLK/SEL Pulse Width

ELECTRICAL CHARACTERISTICS

(CLK/SEL = AIN = ON = POKIN = FB = PGND = GND, OUT = POUT, LXP = LXN, V

OUT

= 5.3V (Note 1), T

= -40°C to +85°C, unless

otherwise noted. Typical values are at T

= +25°C.) (Note 8)

ON = OUT

(Note 5)

< 0.1V, CLK/SEL = OUT,

0 ≤ I

≤ 1.1A, V

BATT

= 3.7V

Adjustable output, CLK/SEL = OUT,

0 ≤ I

≤ 1.1A, V

OUT

= 3.3V, V

BATT

= 2.2V

CLK/SEL = OUT (Note 1)

CLK/SEL = GND (Note 1)

CONDITIONS

µA300Supply Current in Low-Noise Mode

µA120Supply Current in Low-Power Mode

µA20Supply Current in Shutdown

V2.0 2.3Output Voltage Lockout Threshold

V4.87 5.20Output Voltage (Note 4)

V1.20 1.27FB Regulation Voltage

UNITSMIN TYP MAXPARAMETER

DC-DC CONVERTER

ON, 1.2V < V

OUT

< 5.5V

0.8V

OUT

GAIN BLOCK

REFERENCE

LOGIC INPUTS

1 2 3 4 5 6 7 8 ... 15 16

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