800mA, Low-Noise, Step-Up DC-DC Converter

with 500mA Linear Regulator

4

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ELECTRICAL CHARACTERISTICS (continued)

TA =+25 °C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

CONTROL INPUTS

0.2

ONA, ONB, ONL

(Note 5)

0.4

CLK/SEL

0.2

×

Input Low Level

TRACK

0.2

×

V

- 0.2

ONA, ONB, ONL

(Note 5)

1.6

CLK/SEL

0.8

×

Input High Level

TRACK

0.8

×

V

Input Leakage Current

(CLK/SEL, ONA, ONB,

ONL, TRACK)

0.01

1

µA

Internal Oscillator Frequency

CLK/SEL = OUT

0.8

1

1.2

MHz

External Oscillator

Synchronization Range

0.5

1.2

MHz

Oscillator Maximum Duty Cycle

80

86

90

%

Minimum CLK/SEL Pulse

200

ns

Maximum CLK/SEL Rise/Fall Time

100

ns