Digital Camera Step-Down

Power Supply

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3

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

REFERENCE

Reference Output Voltage

µA

1.235

1.248

1.260

V

REF Load Regulation

10

5

9

mV

REF Line Rejection

1

5

mV

REF Undervoltage Lockout

Threshold

REF rising, 20mV hysteresis

0.9

1

1.1

V

OSCILLATOR

OSC Discharge Trip Level

OSC rising

1.225

1.250

1.275

V

OSC Input Bias Current

0.2

100

nA

OSC Discharge Resistance

30

100

Ω

OSC Discharge Pulse Width

100

ns

LOGIC INPUTS (ONM, ONC, ON1)

Input Low Level

0.4

V

ONM

1.8

Input High Level

ONC, ON1

1.6

V

Input Leakage Current

0.01

1

µA

MAIN DC-DC CONVERTER

Main Output Voltage Adjust

Range

2.7

5.5

V

Main Idle Mode™ Threshold

and LXM

8

20

32

mV

Main Current-Sense Amplifier

Voltage Gain

Measured between VDDM and LXM

8.4

9.3

10.2

V/V

Main N Channel Turn-Off

Threshold

Measured between LXM and PGNDM

-26

-17

-8

mV

Main Slope Compensation

Gain

0.16

0.20

0.24

V/V

MAIN ERROR AMPLIFIER

FBM Regulation Voltage

Unity gain configuration, FBM = COMPM

1.233

1.248

1.263

V

FBM to COMPM

Transconductance

Unity gain configuration, FBM = COMPM,

-5

70

100

160

µS

FBM Input Leakage Current

5

100

nA

COMPM Minimum Output

Voltage

0.3

V

COMPM Maximum Output

Voltage

2.00

2.14

2.27

V

Idle Mode is a trademark of Maxim Integrated Products.