Rainbow-electronics MAX1760 Bedienungsanleitung PDF herunterladen (Seite 3)

MAX1760

0.8A, Low-Noise, 1MHz,

Step-Up DC-DC Converter

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ELECTRICAL CHARACTERISTICS

(CLK/SEL = ON = FB = PGND = GND, ISET = REF, OUT = POUT, V

OUT

= 3.6V, T

= -40°C to +85°C, unless otherwise noted.) (Note 7)

ELECTRICAL CHARACTERISTICS (continued)

(CLK/SEL = ON = FB = PGND = GND, ISET = REF, OUT = POUT, V

OUT

= 3.6V, T

= 0°C to +85°C. Typical values are at T

= +25°C

unless otherwise noted.)

PARAMETER CONDITIONS MIN TYP MAX UNITS

REFERENCES

Reference Output Voltage I

REF

= 0 1.230 1.250 1.270 V

Reference Load Regulation -1µA < IREF < 50µA 5 15 mV

Reference Supply Rejection 2.5V < V

OUT

< 5V 0.2 5 mV

LOGIC INPUTS

CLK/SEL Input Low Level 2.5V ≤ V

OUT

≤ 5.5V (0.2)V

OUT

CLK/SEL Input High Level 2.5V ≤ V

OUT

≤ 5.5V (0.8)V

OUT

1.1V ≤ V

OUT

≤ 1.8V 0.2

ON Input Low Level (Note 6)

1.8V ≤ V

OUT

≤ 5.5V 0.4

1.1V ≤ V

OUT

≤ 1.8V V

OUT

- 0.2

ON Input High Level (Note 6)

1.8V ≤ V

OUT

≤ 5.5V 1.6

Input Leakage Current CLK/SEL, ON 0.01 1 µA

Minimum CLK/SEL Pulse Width 200 ns

Maximum CLK/SEL Rise/Fall Time 100 ns

PARAMETER CONDITIONS MIN MAX UNITS

DC-DC CONVERTER

Output Voltage

< 0.1V, CLK/SEL = OUT, includes load

regulation for 0 < I

< 0.55A

3.17 3.38 V

FB Regulation Voltage

Adjustable output, CLK/SEL = OUT, includes

load regulation for 0 < I

< 0.55A

1.215 1.270 V

Internal Oscillator Frequency CLK/SEL = OUT 0.75 1.2 MHz

Oscillator Maximum Duty Cycle (Note 3) 80 90 %

Output Voltage Lockout Threshold (Note 4) Rising edge 2.00 2.30 V

Supply Current in Shutdown V

= 3.6V 5 µA

No-Load Supply Current (Note 5) CLK/SEL = GND 185 µA

DC-DC SWITCHES

N-channel 0.28

Switch On-Resistance

P-channel 0.45

Ω

N-Channel Current Limit 1.0 1.6 A

REFERENCE

Reference Output Voltage I

REF

= 0 1.230 1.270 V

1 2 3 4 5 6 7 8 ... 11 12

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