1.5A, Low-Noise, 1MHz, Step-Up

DC-DC Converter

4

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ELECTRICAL CHARACTERISTICS

wise noted.) (Note 8)

PARAMETER

CONDITIONS

MIN

MAX

UNITS

DC-DC CONVERTER

Input Voltage Range (Note 1)

5.5

V

Minimum Startup Voltage (Note 2)

1.1

V

Frequency in Startup Mode

125

1000

kHz

Internal Oscillator Frequency

CLK/SEL = OUT

0.75

1.25

MHz

Oscillator Maximum Duty Cycle

(Note 3)

80

91

%

External Clock Frequency Range

0.6

1.2

MHz

Output Voltage

3.17

3.38

V

FB Regulation Voltage

Adjustable output, CLK/SEL = OUT, includes load

1.215

1.270

V

FB Input Current

100

nA

Output Voltage Adjust Range

2.5

5.5

V

Output Voltage Lockout

Threshold (Note 4)

Rising edge

2.00

2.30

V

ISET Input Leakage Current

50

nA

Supply Current in Shutdown

10

µA

No-Load Supply Current, Low-

Power Mode (Note 5)

CLK/SEL = GND, AIN = OUT

200

µA

Gain Block Supply Current

50

µA

DC-DC SWITCHES

POUT Leakage Current

10

µA

LX Leakage Current

10

µA

N-channel

0.13

Switch On-Resistance

P-channel

0.25

Ω

N-Channel Current Limit

2.0

3.4

A

P-Channel Turn-Off Current

CLK/SEL = GND

10

240

mA

REFERENCE

Reference Output Voltage

1.220

1.270

V

Reference Load Regulation

15

mV

Reference Supply Rejection

5

mV

GAIN BLOCK

AIN Reference Voltage

910

970

mV

AIN Input Current

±30

nA

Transconductance

5

16

mS

AO Output Low Voltage

0.4

V

AO Output High Leakage

1

µA